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558 results about "Dimethyl phthalate" patented technology
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Dimethyl phthalate is an organic compound with molecular formula (C₂H₃O₂)₂C₆H₄. The methyl ester of phthalic acid, it is a colorless liquid that is soluble in organic solvents. Dimethyl phthalate is used as an insect repellent for mosquitoes and flies. It is also an ectoparasiticide and has many other uses, including in solid rocket propellants, and plastics. Its LD50 is 8200 mg/kg (rats, oral).
Wax-for preventing rubber
A protecting wax for rubber is proportionally prepared through mixing the paraffin wax with 40-70 deg.C for smelting point with microcrystalline wax with 70-90 deg.C for smelting point, and adding polyethene wax and the antioxidizing agent chosen from N-isopropyl-N-phenylbenzodiamine, dimethyl phthalate and 2,6-di-tert-butyl p-cresol. It can prevent ageing and cracking of rubber.
Owner:PETROCHINA CO LTD +2
Vehicle high-methanol content gasoline
InactiveCN102161919AImprove starting performanceCold start problem solvedLiquid carbonaceous fuelsIsobutanolButanedioic acid
The invention discloses vehicle high-methanol content gasoline, relates to carbon-containing fuels and solves the problems of difficult low-temperature startup, serious metal corrosion, inadequate power and susceptibility to generating precipitates of the conventional methanol gasoline. The vehicle high-methanol content gasoline comprises the following components in part by volume: 70 to 86 partsof methanol, 14 to 30 parts of gasoline component oil, 0.5 to 1 part of cosolvent, 0.1 to 0.2 part of antiseptic and rubber swelling inhibitor, 0.2 to 0.3 part of detergent and 0.01 to 0.05 part of coloring agent. The cosolvent consists of isobutanol, isopropyl ether, 2-isobutanol and tetrahydrofuran, the antiseptic and rubber swelling inhibitor consists of propargyl alcohol, butanedioic acid, hexakis(dihydrogen phosphate), N-methyl morpholine, cyclohexane and dimethyl phthalate, the detergent consists of normal propyl alcohol, isopropanol, limonene and cyclohexane, and the coloring agent is Sudan IV solution. The vehicle high-methanol content gasoline has high startability, high dynamic performance, high environmental protection performance, obvious anticorrosion effect and high safety.
Owner:山西丰喜新能源开发有限公司
Special high-property coating for chemical equipment
InactiveCN104946082AIncrease viscosityIncrease crosslink densityFireproof paintsEpoxy resin coatingsPyrophylliteMelamine phosphate
The invention discloses a special high-property coating for chemical equipment. The special high-property coating comprises the following raw materials: novolac epoxy resin, phosphorus-containing acrylic resin, boric acid modified organic silicon resin, polytetrafluoroethylene resin, polyvinylidene fluoride, a carbon nano tube, ammonium polyphosphate, pentaerythritol, alumina powder, pyrophyllite powder, graphite, expanded perlite, modified attapulgite, cerium oxide, n-butyl alcohol, n-amyl alcohol, ethanediol, water, amine resin, melamine polyphosphate, N-phenyl-N'-cyclohexyl p-phenylene diamine, dodecanol, dipropylene glycol mono butyl ether, dimethyl phthalate, a coupling agent and an auxiliary agent. The special high-property coating for the chemical equipment, which is disclosed by the invention, has the advantages of good corrosion resistance and high-temperature resistance, high adhesive power and excellent flame-retardant property, can be used for the chemical equipment, is difficult to desquamate, good in protection effect and capable of prolonging the service life of the chemical equipment.
Owner:WUHU SHUANGBAO BUILDING MATERIAL
Multifunctional moist towelette
ActiveCN102551580ALess irritatingNo side effectsCosmetic preparationsToilet preparationsIrritationMENTHOL CRYSTALS
The invention discloses a multifunctional moist towelette which comprises a flexible platy fiber carrier, wherein the flexible play fiber carrier is rich in multifunctional liquid medicine, and the multifunctional liquid medicine contains the following components according to weight percentage: 8-10% of deodorized ethanol, 1.5-2.7 % of humectant, 0.1-0.3 % of solubilizer, 0.2-0.4 % of emulsifier, 0.3-0.4 % of preservative, 84.28-76.59 % of purified water, 5-8 % of dimethyl phthalate, 0.3-0.5 % of mosquito repelling plant extract, 0.02-0.03 % of menthol crystal, 0.2-0.5 % of vitamin E, and 0.1-0.5 % of aloe vera gel; the pH value of the multifunctional liquid medicine is 5.6-6.5; the mosquito repelling plant extract is an extract obtained in a way that one or multiple of citronella, folium artemisiae argyi and mozzie buster is subjected to supercritical carbon dioxide extraction or an essential oil extractor method or a physical soaking and extracting method. The multifunctional moist towelette has less irritation to skin, is suitable for sensitive skins, has lasting mosquito repelling effect and has various health-care functions to skin, such as diminishing inflammation, preserving moisture, resisting ageing, easing pain and relieving itching.
Owner:纳奇科化妆品有限公司
Extraction and rectification separation method for normal hexane and methyl cyclopentane
The extraction rectification separation method for normal hexane and methyl cyclopentane comprises: adding the industrial hexane and dimethyl phthalate into the tower with given ratio; after separation, there is high-purity normal hexane on tower top, solution and methyl cyclopentane on tower kettle; putting the material in kettle to solution for distillation with methyl cyclopentane on tower top for further refine; recycling the solution. Wherein, the ratio is 1:3~5. This invention has recycle ratio more than 90% with purity more than 98%, and has no pollution.
Owner:NANJING UNIV OF TECH
Extrudable black body decoy flare compositions and methods of use
InactiveUS6312625B1Reduce compositionEasy to processAmmunition projectilesFirework flares/torchesThermoplasticBlack-body radiation
In this process for producing a black body decoy flare, a composition which, when combusted, provides black body radiation is extruded. The compositions generally include from about 40% to about 70% metal such as magnesium or aluminum, from about 10% to about 40% polytetrafluoroethylene, and from about 8% to about 30% binder. Important to the operation of the invention is the production of carbon upon combustion of the composition. Accordingly, polyaromatic thermoplastics, such as polystyrene and dimethyl phthalate, serve as the binder.
Owner:NORTHROP GRUMMAN INNOVATION SYST INC
Method for detecting plasticizer content in solid sample by headspace solid phase microextraction gas chromatography-tandem mass spectrometry
InactiveCN102520091AImprove accuracyImprove efficiencyComponent separationSensitive analysisGas phase
The invention relates to a method for detecting the plasticizer content in a solid sample by headspace solid phase microextraction gas chromatography-tandem mass spectrometry, and the method combines an isotope internal standard and the headspace solid phase microextraction gas chromatography-tandem mass spectrometry (HS-SPME-GC-MS / MS) analysis for qualitative or quantitative analysis of a dimethyl phthalate plasticizer in a sample. The method mainly comprises the following steps of: a) mixing the solid sample with the isotope internal standard, and conducting extraction with headspace solid phase microextraction equipment; b) carrying out sample analysis; C) performing GC-MS / MS analysis; and d) implementing result treatment and quantitative analysis. The method of the invention is a fast, efficient, sensitive analysis method.
Owner:SHANGHAI INST OF ORGANIC CHEM CHINESE ACAD OF SCI
Extrudable black body decoy flare compositions
InactiveUS6432231B1Easy to processReduce compositionAmmunition projectilesFirework flares/torchesThermoplasticDecoy
An extrudable black body decoy flare composition which, when combusted, provided black body radiation is disclosed. The compositions generally include from about 40% to about 70% metal such as magnesium or aluminum, from about 10% to about 40% polytetrafluoroethylene, and from about 8% to about 30% binder. Important to the operation of the invention is the production of carbon upon combustion of the composition. Accordingly, polyaromatic thermoplastics, such as polystyrene and dimethyl phthalate, serve as the binder.
Owner:NORTHROP GRUMMAN INNOVATION SYST INC
High-temperature-resistant vapour-resistant sheath material for nuclear power station cables and preparation method thereof
ActiveCN103509350AImprove high temperature resistanceExcellent water vapor resistanceRubber insulatorsInsulated cablesAntimony trioxidePetroleum
The invention discloses a high-temperature-resistant vapour-resistant sheath material for nuclear power station cables and a preparation method thereof. The sheath material is prepared from the following raw materials in parts by weight: 50-70 parts of methyl vinyl phenyl polysiloxane rubber, 20-30 parts of ethylene-propylene-diene monomer, 15-25 parts of poly(thiophenylene), 10-15 parts of C5 petroleum resin, 20-30 parts of acetylene black, 1-2 parts of zinc oxide, 2-3 parts of stearic acid, 3-5 parts of triallyl isocyanurate, 15-20 parts of magnesium hydroxide, 10-15 parts of antimony trioxide, 5-10 parts of zinc stannate, 1-2 parts of zine stearate, 1-2 parts of barium stearate, 1.5-2.5 parts of gamma-methacryloxy propyl trimethoxyl silane, 10-15 parts of dimethyl phthalate and the like. The cable material of the invention has excellent performances comprising high temperature resistance, vapour resistance, radiation resistance, corrosion resistance, aging resistance and the like, good flame retardant efficiency, does not spread flame and is automatically extinguished after on fire, has low smoke, no halogens, no toxicities and no corrosive gases, and is capable of satisfying special environmental requirements of special nuclear power stations.
Owner:安徽天民电气科技有限公司
Biodegradable polyester composition
The invention discloses a biodegradable copolyester compound which comprises the components with the weight percentage as follows: 45 percent to 90 percent of poly butylene succinate, 5 percent to 50 percent of poly lactic acid, 1 percent to 2 percent of plasticizer and 1 percent to 5 percent of filling, wherein, the plasticizer is at least one of dimethyl phthalate and diethyl phthalate; and the filling is at least one of talcum powder, bamboo powder, nanometer calcium carbonate and nanometer titanium-silicon complexing agent. The biodegradable copolyester compound integrates the advantages of various biodegradable materials to ensure that the biodegradable copolyester compound not only has good heat resistance, mechanical performance, processability and aging resistance but also reduces the production cost and develops the application field of the biodegradable material under the precondition of not changing the biodegradability.
Owner:马世金
Modified polyether amine epoxy curing agent and preparation method thereof
The invention discloses a modified polyether amine epoxy curing agent. The modified polyether amine epoxy curing agent comprises the following raw materials in parts by weight: 45-60 parts of amine-terminated polyether (D-230), 2-5 parts of N-aminoethylpiperazine (N-AEP), 4-10 parts of benzyl alcohol, 3-8 parts of an accelerant (DMP (Dimethyl Phthalate)-30), 20-30 parts of nonyl phenol or tert-butyl phenol and 6-10 parts of epoxy resin (E-51). The modified polyether amine epoxy curing agent is scientific and reasonable in raw material component ratio; the modified polyether amine epoxy curing agent is low in viscosity, high in hardness and good in glossiness; the adhesive force, the solvent property, the low-temperature resistance and high wet resistance can be remarkably improved; the temperature and time of reaction in the preparation process can be effectively controlled; the cost is lowered; therefore, the modified polyether amine epoxy curing agent has a broad market application prospect.
Owner:宋良俊
Water-based PVDF coated separator for lithium-ion batteries and preparation method thereof
ActiveCN107093694AImprove securityExtend your lifeCell component detailsSecondary cells servicing/maintenanceWater basedCellulose
Owner:HEBEI GELLEC NEW ENERGY MATERIAL SCI&TECHNOLOY CO LTD
Protective coating and preparation method thereof
InactiveCN102559008AExcellent physical and chemical propertiesExcellent dielectric propertiesEpoxy resin coatingsEpoxyMicrocrystalline wax
The invention relates to a protective coating. The protective coating comprises the following components in percentage by weight: 30 to 45 percent of epoxy resin, 1.5 to 3 percent of paraffin, 4.5 to 7 percent of microcrystalline wax, 3.5 to 5 percent of oxidized polyethlene wax, 0.5 to 1 percent of polytetrafluoroethylene micropowder, 25 to 30 percent of epoxy resin diluent, 0.1 to 1 percent of epoxy resin antioxidant, 0.2 to 2 percent of ultraviolet absorbent, 0.1 to 2 percent of accelerator dimethyl phthalate (DMP)-30 and 18 to 25 percent of curing agent. The protective coating which is easy to process and low in cost can prevent illegal advertisements and adhesive paper. The invention also provides a preparation method for the protective coating.
Owner:王伟
Biodegradable polyester composition
InactiveCN101508830AImprove heat resistanceImprove mechanical propertiesBiodegradable polyesterAdipate
The invention discloses a biodegradable copolyester compound which comprises the components with the weight percentage as follows: 45 percent to 90 percent of poly butylene succinate terpolymer, 5 percent to 50 percent of poly lactic acid, 1 percent to 2 percent of plasticizer and 1 percent to 5 percent of filling, wherein, the poly butylene succinate terpolymer is at least one of poly butylene succinate-adipate, poly butylene succinate-terephthalic acid and poly butylene succinate-lactic acid; the plasticizer is at least one of dimethyl phthalate and diethyl phthalate; and the filling is at least one of talcum powder, bamboo powder, nanometer calcium carbonate and nanometer titanium-silicon complexing agent. The biodegradable copolyester compound integrates the advantages of various biodegradable materials to ensure that the biodegradable copolyester compound not only has good heat resistance, mechanical performance, processability and aging resistance but also reduces the production cost and develops the application field of the biodegradable material under the precondition of not changing the biodegradability.
Owner:马世金
Method for treating diethyl (o-) phthalate waste water and recovering diethyl (o-) phthalate from it
InactiveCN1935776AEnable recyclingPromote regenerationOrganic compound preparationCarboxylic acid esters preparationHigh concentrationAbsorption column
The invention discloses a method of processing dimethyl phthalate- containing waste water and recovering dimethyl phthalate from the waste water, belonging to the field of processing organic pollutant waste water with macroporous resin, passing the waste water through absorption column equipped with resin and making the dimethyl phthalate absorbed on the resin so as to implement effective separation of organic matter; the effluent water after absorption separation can be directly discharged into municipal pipeline network; the resin is regenerated after eluted with methanol or alcohol; the obtained high-concentration dimethyl phthalate alcohol solution is rectified and the recovered methanol or alcohol acts as desorbing agent for the next desorbing operation, and the remaining dimethyl phthalate can be recovered as resources. And it unites waste water processing and resource recovery from waste.
Owner:NANJING UNIV
Bacillus strain capable of efficiently degrading DMP (dimethyl phthalate), culture method and application thereof to remediation of soil PAEs (phthalic acid esters) pollution
The invention discloses a bacillus strain capable of efficiently degrading DMP (dimethyl phthalate), a culture method and application thereof to remediation of soil PAEs (phthalic acid esters) pollution. A strain QD-9-10 which grows by mainly taking DMP as a carbon source is separated and identified from black soil covered with mulching films for a long term by adopting inorganic salt culture medium. According to morphological characteristic observation of a colony and 16SrDNA base sequence determination and homological analysis, the identification result of the bacterium is that QD-9-10 belongs to Bacillus subtilis. According to results of orthogonal experiments, the optimum culture method of the strain QD-9-10 is to perform culture by adopt inorganic salt culture medium under culture conditions that pH is 8.0, temperature is 35DEG C and shaking speed is 150rpm and DMP initial concentration is 100mg L<-1>, and biomass reaches the maximum at 32h. In addition, according to substrate utilization tests, the strain QD-9-10 can also utilize other common PAEs. Accordingly, the Bacillus subtilis QD-9-10 strain has a capability of degrading DMP and other common PAEs, and has a certain application prospect in aspects of degrading PAEs pollutants and remedying soil PAEs pollution.
Owner:QIQIHAR UNIVERSITY +1
Method for methyl esterification recovery and recycle of PTA oxidation residue
InactiveCN105017022ARealize resource utilizationHigh purityOrganic compound preparationCarboxylic acid esters preparationDimethyl terephthalateMethyl benzoate
The invention discloses a method for methyl esterification recovery and recycle of PTA oxidation residue. The method comprises 1, primary oxidation treatment, 2, secondary methyl esterification treatment, and 3, tertiary rectification treatment, wherein methyl benzoate is recovered by primary reduced pressure rectification, methyl toluate is recovered by secondary reduced pressure rectification, mixed benzenedicarboxylic acid dimethyl ester is recovered by tertiary reduced pressure rectification, and dimethyl terephthalate, dimethyl isophthalate and dimethyl phthalate are respectively recovered by mixed benzenedicarboxylic acid dimethyl ester crystallization treatment. The method effectively recovers BA, IPA, TA, PT, 4-CBA, 4-HBA, OPA and TMA of the PTA oxidation residue, can produce high purity methyl benzoate, mixed benzenedicarboxylic acid dimethyl ester and trimethyl trimellitate products and realizes separation and recovery of DMT, DMI and DMO products from mixed benzenedicarboxylic acid dimethyl ester by crystallization.
Owner:ZHEJIANG UNIV
Wear-resistant paper-plastic composite bag and preparation method for same
ActiveCN104909034AImprove wear resistanceThe method is simpleSynthetic resin layered productsBagsEpoxySodium stearate
The invention discloses a wear-resistant paper-plastic composite bag and a preparation method for the same. The wear-resistant paper-plastic composite bag comprises a plastic layer and a paper layer, wherein the plastic layer is arranged on the surface of the paper layer, and comprises polypropylene, polyethylene, epoxy resin, ultrahigh molecular weight polyethylene, organic silicon, phenol formaldehyde resin, fiberglass, polytetrafluoroethylene, molybdenum dioxide, glycerin, dimethyl phthalate and sodium stearate. The wear-resistant paper-plastic composite bag has high wear resistance, and the preparation method is convenient, easy, mild in condition and suitable for large-scale production.
Owner:TONGLING FOUNDER PLASTICS TECH
Microcapsule containing dimethyl phthalate, mosquito repellent water and preparation method thereof
ActiveCN106137780AReduce stimulationAchieve slow releaseCosmetic preparationsToilet preparationsPolythylene glycolLotion
The invention provides a microcapsule containing dimethyl phthalate, mosquito repellent water and a preparation method thereof. The microcapsule disclosed by the invention comprises dimethyl phthalate, chitosan and gamma-polyglutamic acid. The dimethyl phthalate is coated by utilizing chitosan and polyglutamic acid and is separated from skin, so that irritation to skin is reduced, slow release of the mosquito repellent is realized, and then a mosquito repellent effect is lasting. The mosquito repellent water disclosed by the invention comprises the following main components: the microcapsule containing dimethyl phthalate, aloe extract, hyaluronic acid, polyethylene glycol, propylene glycol, rose hydrosol, water and the like, has the effects of moisturizing, resisting bacteria, diminishing inflammation, relieving itching and the like and is safe and non-toxic. The microcapsule is simple in preparation process, and the wall material has renewability and biodegradability and is non-irritating to skin. According to the mosquito repellent water disclosed by the invention, the dimethyl phthalate is separated from the skin by utilizing the microcapsule, so that bad reactions are reduced; and moreover, a slow release aim of the dimethyl phthalate is achieved, the concentration of the dimethyl phthalate in toning lotion can be reduced, and the effective mosquito repellent time is prolonged.
Owner:广州睿森生物科技有限公司
Method for preparing polyvinylidene fluoride micro-porous film with thermal induced phase separation method
InactiveCN102626594AStructure can be controlledCan control the sizeSemi-permeable membranesFiberDibutyl sebacate
The invention discloses a method for preparing a polyvinylidene fluoride micro-porous film with a thermal induced phase separation method, belonging to the technical field of preparation of a polyvinylidene fluoride micro-porous film. The method comprises the following steps of: mixing a polyvinylidene fluoride resin with a cosolvent consisting of weak and strong action potential solvents, wherein the weak action potential solvent is benzyl benzoate or dibutyl sebacate, and the strong action potential solvent is dimethyl phthalate, monoglyceride or benzophenone; heating for dissolving into a homogeneous mixture; and cooling and scraping into a flat plate film or spinning into a hollow fiber film. The method has the advantages that: by adjusting the mixture ratio of the strong and weak action potential solvents in the cosolvent, the compatibility with PVDF (Polyvinylidene Fluoride) can be adjusted, and the microcellular structure and size of the film can be further controlled. Moreover, a PVDF film prepared with the method has high strength, which can be up to 9.5MPa; and the water flux is high, and can be up to 705 L / (m<2>.bar.h).
Owner:TIANJIN UNIV
Esters of 5-hydroxymethylfurfural and methods for their preparation
Disclosed are compositions and methods for the production of mono-esters and di-esters from the reaction of HMF and a reactant selected from a diacid or a diacid derivative; typical reactants are PAN, phthaloyl dichloride, dimethyl phthalate, maleic acid, and maleic anhydride or mono-esters that can be prepared from HMF and MAN.
Owner:BATTELLE MEMORIAL INST
Method for recycling and preparing lithium titanate negative electrode material from waste lithium titanate battery
ActiveCN106981698AThe process is simple and easy to controlLow costCell electrodesWaste accumulators reclaimingMass ratioEngineering
The invention discloses a method for recycling and preparing a lithium titanate negative electrode material from a waste lithium titanate battery. The method comprises the steps of 1) performing discharging and shell disassembly on the waste lithium titanate battery to separate a pole plate, placing the waste lithium titanate battery in a separation pool, and performing heating and impregnation so that an electrode material and a current collector are separated, wherein a solvent in the separation pool is a mixed solvent formed from N-methyl pyrrolidone, dimethyl phthalate and acetone according to a mass ratio being (5-0.5):(5-0.1):(2-0.1); 2) performing solid-liquid separation on the lithium titanate battery material paste of which the current collector is separated; 3) sintering a mixture, and removing a conductive carbon material; 4) uniformly mixing the lithium titanate material, a conductive coating agent, a doping agent and a lithium salt material, and ball-milling the mixture to nanoscale by a wet method; 5) performing spray granulation on the nanometer lithium titanate mixed paste; 6) performing high-temperature calcination on a lithium titanate precursor; and 7) smashing the lithium titanate material, and performing inflation and package. The recycle method provided by the invention is controllable in process and low in cost, and industrialization can be achieved.
Owner:SHANGHAI ELECTRICGROUP CORP
Polyurethane resin used for high-density nubuck and preparation method thereof
InactiveCN106519179AAddress water resistanceSolve the peel strengthTextiles and paperPolyesterPolymer science
The invention discloses a polyurethane resin used for high-density nubuck and a preparation method thereof. The polyurethane resin used for high-density nubuck is prepared from, by weight, 5.0%-20.0% of diisocyanate, 10.0%-25.0% of polyester polyol, 1.0%-5.0% of chain extender, 60.0%-75.0% of solvent, 0.1%-0.3% of methyl alcohol and 2.0%-5.0% of accessory ingredient. The polyester polyol is a mixture of poly(1,6-hexanediol adipate) dihydric alcohol, poly dimethyl phthalate-propylene glycol ester dihydric alcohol, poly polycarbonatediol and dihydroxy-terminal polyether modified silicone oil. According to the polyurethane resin used for high-density nubuck and the preparation method thereof, the problems of hydrolysis resistance and peel strength and giving consideration to color contrast property and velvet feel property of high-density nubuck are solved. The prepared synthetic leather is good in hydrolysis resistance performance. The surface of the synthetic leather is not chalked, peel resistance strength attenuates less than 10% after the synthetic leather is soaked in 10% NaOH solution at 25 DEG C for 24 hours, color contrast property is good, and velvet feel is strong. The method has the advantages of being fast and even in solidification rate when used for preparing nubuck, easy for vertical finger-shaped bubble holes to form, good in moisture-penetrability, strong in surface velvet feel after buffed, good in color contrast property, high in hydrolysis resistance and peel strength and the like.
Owner:ZHEJIANG HUAFON SYNTHETIC RESIN
Mosquito repellent and preparation method thereof
InactiveCN101843566AReduce concentrationIncrease dosageCosmetic preparationsToilet preparationsSolventChemistry
The invention relates to a mosquito repellent and a preparation method thereof, belonging to the technical field of daily chemical engineering. The mosquito repellent is prepared from the following components: 25-40% of dimethyl phthalate, 0.5-1.2% of Carbomer 940, 10-15% of polyethylene glycol 400, 2-10% of propylene glycol, 2-10% of 95% ethanol, 5-10% of polyethylene glycol 6000, 0.5-2% of triethanolamine and balance of de-ionized water. The invention decreases the alcohol concentration, increases the dimethyl phthalate content, enables the skin to feel clean and cool in a similar way after smearing the gel type mosquito repellent under the condition of enhancing the effect by adjusting the solvent components, and achieves certain moisture retention and moistening effects on the skin after smearing the gel type mosquito repellent by the mutual cooperation of the propylene glycol and the polyethylene glycols 400 and 6000, thereby being applicable to personnel who perform long-term field operation.
Owner:北京日蒙生物科技有限公司
Process for selective hydrogenation of styrene-conjugated diene block polymer
This invention is selection hydrogenization method of phenylethene-conjugated diene block copolymer. In the hydrogenization, catalyst promoter could be added in the proportion of 1:1- 1:5 with compound like phenyl phthalate. catalyst promoter's structure is as followings: R1 means C1-C3 acroleic acid, R2,R3,R4,R5 represent H or C1-C3 acroleic acid respectively. This invention is advantageous in short hydrogenization time (60 minutes), high product efficiency (>=98%)and high white content.
Owner:CHINA PETROCHEMICAL CORP +1
Low temperature dyeing process for polyester fibers
ActiveCN107164974ALower dyeing temperatureIncrease the percentage of dyeingDyeing processDisperse dyePolymer science
The invention provides a low temperature dyeing process for polyester fibers. The low temperature dyeing process comprises: sequentially dissolving benzyl alcohol, dimethyl phthalate, sorbitan monooleate polyoxyethylene ether, a disperse dye and a dispersant in a buffer liquid with a pH Value of 4.5-6.5 to prepare a dyeing liquid, and heating the dyeing liquid to a temperature of 45-55 DEG C; pouring a polyester fabric into the dyeing liquid according to a bath ratio of 1:20-40, heating to a temperature of 90-95 DEG C at a rate of 1.5-2 DEG C / min, carrying out thermal insulation for 30-50 min, cooling to a temperature of 70-75 DEG C at a rate of 1.5-2 DEG C / min, and carrying out thermal insulation for 30-40 min; and taking out the polyester fabric, carrying out water washing 2-3 times, carrying out reduction washing, carrying out water washing 3-4 times, and drying the polyester fabric at a temperature of 70-75 DEG C. According to the present invention, with the low temperature dyeing process, the dyeing temperature of the polyester fiber can be effectively reduced, and the obtained polyester fiber has advantages of high dyeing percentage, high rubbing fastness, high soap color fastness, and excellent comprehensive performance.
Owner:马鞍山市永运家纺有限公司
Pour point depressant composition suitable for biodiesel and petroleum diesel blend oil, preparation method and application of pour point depressant composition
ActiveCN105713684AEfficient use ofImprove developmentLiquid carbonaceous fuelsFuel additivesBiodieselDepressant
The invention discloses a pour point depressant composition suitable for biodiesel and petroleum diesel blend oil, a preparation method and application of the pour point depressant composition. The pour point depressant composition is formed by mixing phthalic acid ester type organic solvent, acetate type organic solvent and diesel oil pour point depressant. Specifically, the pour point depressant composition is prepared from 0-15 wt% of dimethyl phthalate, 10-30 wt% of diethyl phthalate, 0-10 wt% of dibutyl phthalate, 0-25 wt% of butyl acetate and 20-60 wt% of pour point depressant. By evenly mixing and stirring all the components at normal temperature and normal pressure and conducting ultrasonic dispersion for 25-30 minutes, the pour point depressant composition is prepared. The pour point depressant composition is particularly suitable for improving low-temperature mobility of biodiesel and petroleum diesel blend oil formed by mixing soybean oil biodiesel and 0# biodiesel at normal temperature and normal pressure, the pour point effect is remarkable, the cold filter plugging point can be reduced by 7-11 DEG C, and the pour point can be reduced by 6-10 DEG C.
Owner:SHANGHAI INST OF TECH
Fabric durable water repellent finishing agent and preparation method thereof
InactiveCN102965945AGood waterproof and breathable effectFeel goodFibre treatmentEpoxySodium hydroxide
The invention discloses a fabric durable water repellent finishing agent and a preparation method thereof. The fabric durable water repellent finishing agent consists of the following components in parts by weight: 3-5 parts of methyl hydrogen silicone oil emulsion, 10-20 parts of epoxy resin, 20-30 parts of acetone, 1-3 parts of ammonium acetate, 10-20 parts of polyving akohol, 0.2-0.8 part of sodium hydroxide, 3-8 parts of urea, 1-3 parts of sodium chloride, 1-3 parts of dimethyl phthalate, and 120-200 parts of water. Compared with the prior art, the fabric durable water repellent finishing agent has the following beneficial effects that (1) the finishing agent is resistant to washing and dry cleaning, and can not reduce the water repellent effect of a fabric when encountering substances such as acid, alkali and hydrophilic surfactants; and (2) the fabric treated by the finishing agent is not only good in waterproof and breathable effects, but also very good in hand feel.
Owner:WUJIANG DEKELI TEXTILE PROD
Method for detecting phthalate plasticizer in inner packing material of medicine
InactiveCN105301139ASolve Quantitative AssaysMake up for non-specificityComponent separationPlasticizerPack material
The invention provides a method for detecting a phthalate plasticizer in an inner packing material of medicine. The method comprises the following steps: weighing the inner packing material of medicine in a measuring flask, adding methanol for dilution, filtering with a filter membrane, and taking a subsequent filtrate as liquid for testing; respectively weighing dimethyl phthalate, diethyl phthalate and dibutyl phthalate in a measuring flask, adding a methanol solvent to a scale for dilution, and taking a solution as a contrast liquid 1; weighing dioctyl phthalate in a measuring flask, adding a methanol solvent to a scale for dilution, and taking a solution as a contrast liquid 2; injecting the liquid for testing, the contrast liquid 1 and the contrast liquid 2 in order for detection by a HPLC, and finishing the detection of the phthalate plasticizer in the inner packing material of medicine. The method can be used for distinguishing whether a plasticizer component is added into the common packing materials of medicines, and an accurate quantitative analysis is carried out, so that product quality which is influenced by migration of plasticizer components of medicine coating powder and packing materials to medicine is controlled.
Owner:YICHANG HEC CHANGJIANG PHARMA CO LTD
Corrosion-resistant inflaming retarding heat-proof cable sheath material
InactiveCN104098899AImprove high temperature resistanceImprove corrosion resistancePlastic/resin/waxes insulatorsBoron fiberFluorinated ethylene propylene
The invention discloses a corrosion-resistant inflaming retarding heat-proof cable sheath material which comprises the following raw materials in parts by weight: 19-21 parts of fluorinated ethylene propylene copolymer (FEP), 4-6 parts of polytetrafluoroethylene, 20-23 parts of polyphenylene sulfide (PPS), 7-9 parts of boron fiber, 4-6 parts of nylon fiber, 10-13 parts of short glass fiber, 0.5-1.2 parts of dimethyl phthalate (DMP), 9-11 parts of kaolin, 4-6 parts of mica, 3-5 parts of quartz, 10-12 parts of nano-montmorillonite, 3-4 parts of ammonium phosphate, 1-2 parts of hydrated zinc borate, 0.5-1.5 parts of bis stearamide, 4-6 parts of silicone oil, 1-2 parts of a titanate coupling agent NDZ-101 and 2-3 parts of castor acid barium. The corrosion-resistant inflaming retarding heat-proof cable sheath material has excellent corrosion-resistant performance and inflaming retarding heatproof performance, and is good in processability and excellent in impact strength.
Owner:安徽宁国市高新管业有限公司
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