227results about How to "Synthetic raw materials are readily available" patented technology

The invention discloses a halogen-free high-efficiency flame retardant composition and a preparation method thereof. The halogen-free high-efficiency flame retardant composition is prepared from the following components in percentage by mass: 10-80% of phenyl melamine carboxyethyl phenyl phosphinic acid condensation compound, 15-70% of melamine and/or derivative thereof and 5-20% of organic phosphate. The halogen-free flame retardant composition can be used for flame retarding of various polyolefin, nylon, polyurethane, polyester and other synthetic materials and textiles, and is particularly suitable for polyester and nylon engineering plastic; and by the addition of 12wt% of the flame retardant composition to polybutylene terephthalate (PBT) resin, the flame-retarding level can reach UL 94 V-0 (1.6 mm). The flame retardant composition has the characteristics of high flame retarding efficiency, good fluidity, no precipitation and the like, and can meet the use requirements of flame-retardant resin for electric appliance shells and supports, electronic and electric device connectors and the like.

The invention discloses several non-peripherial substituted phthalocyanine metal complexes and making method, which introduces functional group into position a (position 1(4), 8(11), 15(18) and 22(25)) of phthalocyanine complex.

The invention discloses amphiphilic block copolymer connected through molecular glue and a synthesis method and application of the copolymer, a hydrophilic compound and a hydrophobic compound for synthesizing the copolymer, and preparation methods of the compounds. The copolymer M has a structural formula shown in the specifications. The amphiphilic block copolymer M is prepared by mixing the hydrophilic compound, the hydrophobic compound and an oxidant in a halogenated hydrocarbon solvent. The copolymer M can be used as a medicine transport carrier, and a medicine is poorly soluble in water. Raw materials for synthesizing the compounds are simple and readily available, the synthesis process is the conventional reaction process, reaction conditions are mild, and the compounds can be massively prepared; and a micelle formed by self-assembling the block copolymer can be used for the medicine transport carrier.

The invention provides a non-hydrolytic sol-gel method for preparing high-dispersity nano alumina, which comprises the following steps of: preparing a precursor by mixing an aluminum salt with an alcoholic solvent, heat-treating the prepared precursor by using a low-temperature non-aqueous solvent, washing the product with ethanol, centrifuging and then drying to obtain the powder body of the nano alumina with high dispersity. The nano alumina has small particle sizes which are distributed evenly, and can be stably dispersed in water. In the whole producing process, the raw materials are easy to get, the operation is simple, no minute and complicated sample after-treatment processes exist, the reaction yield reaches up to 98%, the industrial amplification factor is small, and thus the industrial production of the high-dispersity nano alumina can be realized.

The invention discloses a method of producing medium and mid-high olefines, such as C8, C12, C16 and C20, etc. with ionic liquid as catalyst to catalyze butylene to carry out butylene oligomerization. The method adopts the butylene as raw material; cation of the ionic liquid catalyst comes from hydrohalide of amine with alkyl, and anion of the ionic liquid catalyst is produced by a metallic compound that has one or two metals. In the technique of the invention, volume ratio of catalyst to butylene is low; conversion efficiency of butylene is high; selectivity of oligomerized product is high; distribution of oligomerized product is improved, and the invention has good social and economic benefits.

The invention belongs to the technical field of drug preparation and specifically relates to a sitagliptin phosphate tablet and a preparation method thereof. The sitagliptin phosphate tablet comprises the following raw materials in parts by weight: 30 parts of sitagliptin phosphate, 55-70 parts of filler, 0-5 parts of adhesive, 1.5-3.0 parts of disintegrating agent and 1.5-5.0 parts of lubricating agent; the filler is selected from one or more of microcrystalline cellulose, sugar and inorganic salt; the adhesive is selected from one or more of hydroxypropyl methylcellulose, hydroxypropylcellulose, povidone K30 and starch; the disintegrating agent is selected from one or more of crosslinking sodium carboxymethylcellulose, sodium carboxymethyl starch and polyvinylpolypyrrolidone. Compared with the prior art, the sitagliptin phosphate tablet provided by the invention has the technical effects of easily acquired compound raw materials, high disintegration speed, high dissolution rate, high stability, simple steps of preparation method, easily controlled technological process, short production period, low production cost and suitability for industrialized application.

The invention relates to inorganic nano-material preparing, particularly to a preparation method for photosensitive and amphiphilic polyurethane-stabilized nano-zinc oxide, wherein a new photosensitive and amphiphilic polyurethane is adopted to carry out coating, an inverse emulsion technology is adopted to prepare the nano-zinc oxide, such that the photosensitive and amphiphilic polyurethane-stabilized nano-zinc oxide is formed. The novel nano-zinc oxide synthesized through the method provided by the present invention has a particle size of 20-800 nm, can be regulated through simply controlling reaction conditions (such as reactant concentrations, ultrasonic emulsification power and the like), and has good dispersity and good dispersion stability in an organic solvent system. The synthesis method for the photosensitive and amphiphilic polyurethane prepolymer has characteristics of simpleness, controllable process, easy availability of the raw materials, non toxicity and harm, and easy industrial production. The prepared nano-ZnO can be adopted as a functional nano-filler in various polymer systems, such that characteristics of anti-ultraviolet property, mechanical property and the like of the polymer can be improved.

The present invention uses racemic valine (DL-Val) as raw material, uses inorganic acid as solvent, uses dextral dibenzoyl tartaric acid (D-DBTA) and levo-dibenoyl tartaric acid (L-DBTA0 as resolution agent according to the ratio of 1:0.5-1.2 in dilute inorganic solution, stirring for 0.5-2.0 hr. at 60-100 deg.C, then progressively cooling to room temp., filtering out crystal salt, using alkali to neutralize said crystal salt and mother liquor respectively in water and ethyl alcohol so as to respectively obtain the invented dextral valine (D-Val) and levo-valine (L-Val).

The invention provides an easily-modified near-infrared region II organic small molecule dye and a synthetic method and application of the easily-modified near-infrared region II organic small molecule dye. The near-infrared region II fluorescent dye belongs to polymethenyl pyran or polymethenyl thiapyran salt organic small molecules, and is prepared by a condensation reaction of polymethenyl aniline salt with pyran or thiopyran salt. The synthetic raw materials are easy to obtain, the cost is low, the preparation process is simple, the yield is high, and large-amount synthesis can be achieved. The purpose of adjusting the fluorescence emission spectrum is achieved by changing an intramolecular polymethenyl chain and hetero atom species. The small molecule dye has the maximum emission wavelength range of 1000-1200 nm, and is high in fluorescence quantum yield, good in light stability and quite applicable to living imaging. The small molecule dye can be linked to groups with specific functions by click chemistry for a variety of bioimaging application. Near-infrared region II fluorescent living imaging achieves low background noise, strong fluorescence signal and high signal-to-noise ratio.

The invention belongs to the technical field of advanced nanocomposites, and particularly discloses a high-dispersity hollow anti-bell ringing type copper/silicon dioxide core-shell nanoparticle and a preparation method thereof. The preparation method comprises the following steps: synthesizing a copper nanoparticle with uniform morphology and size by adopting a high-temperature decomposition method; coating a layer of uniform silicon dioxide on the surface of the nanoparticle by using a cyclohexane/ammonia water reversed-phase micro-emulsion method so as to form a copper/silicon dioxide core-shell structure; and finally carrying out processing under an alkaline condition by utilizing a hydrothermal method so as to obtain the high-dispersity hollow anti-bell ringing type copper/silicon dioxide core-shell nanoparticle. The hollow anti-bell ringing type nanoparticle has the advantages of being high in copper metal dispersity, uniform in morphology and high in specific surface area, and has important application prospect in the fields of adsorptive separation and catalysis. According to a synthesis method provided by the invention, the control carried out on the specific surface area and copper dispersity of the hollow anti-bell ringing type core-shell nanoparticle can be realized. The synthesis raw materials are easy to get and the method is simple and rapid, so that large-batch synthesis can be realized.

The invention belongs to the field of preparation of ionic hydrogen bond organic framework materials, and particularly discloses an ionic hydrogen bond organic framework material with proton conduction performance, the chemical formula of the ionic hydrogen bond organic framework material is {TPE-SO3H. 2 (DBD). 2 (DMF). 4 (H2O)} n, n is a positive integer, TPE-SO3H is 1, 1, 2, 2-tetrasulfonic acidphenyl ethylene, DBD is (C5NH4NH2) 22+, and DMF is N, N '-dimethylformamide. The structural unit belongs to a triclinic system, the space group is P-1, the molecular formula is C52H62N10O18S4, the cell parameters are as follows: alpha = 102.789 degrees, beta = 99.968 degrees and gamma = 112.169 degrees, each repetitive unit comprises four water molecules and two DMF molecules, two DBD molecules and one TPE-SO3H molecule, and amino groups on the DBD molecules and sulfonate groups on the TPE-SO3H molecule form a one-dimensional hydrogen bond network with water molecules. The material has good thermal stability, and has good performance for proton transportation. The invention discloses the preparation method of the material, the synthetic raw materials are easy to obtain, and the preparation process is simple. The ionic hydrogen bond organic framework material disclosed by the invention can be used as a proton conducting material and has a very good application prospect.

The invention discloses a preparation method and application of blue-fluorescence carbon quantum dots, and belongs to the technical field of carbon quantum dots. Citric acid and hyaluronic acid are dissolved into water to obtain a mixed solution A; the mixed solution A is subjected to a hydrothermal reaction for 4-12 hours to obtain an HA-CDs solution; the HA-CDs solution is dialysed by using a dialysis membrane and then centrifuged, after standing, supernatant liquid is taken to obtain the blue-fluorescence carbon quantum dots. The hyaluronic acid and the citric acid are used as synthesizingraw materials, the novel carbon quantum dots high in fluorescence intensity is synthesized in one step, high-selectivity detection of folic acid can be achieved, and the carbon quantum dots which areeasily synthesized are applied in biological recognition.

The invention discloses a one-dimensional Bi-doped carbon nanowire composite material and a preparation method and application thereof. The one-dimensional Bi-doped carbon nanowire composite material is homogeneous in structure, regular and uniform in bismuth particle and completely embedded into carbon nanowires. The preparation method has the advantages of simple materials, availability to the materials, low price, simple synthesis method and environmental friendliness. The one-dimensional Bi-doped carbon nanowire composite material is high in cycling stability and specific capacity and capable of effectively inhibiting alloying volume expansion during cycling when used as lithium ion and sodion battery cathode materials, and is as high as 300 mAh g<-1> in capacity after 500 circles of cycling under the condition of 100 mA g<-1> and as high as 290 mAh g<-1> in capacity after 500 circles of cycling under the condition of 100 mA g<-1> when used as the lithium ion battery cathode material.

The invention discloses a phase change energy storage building material. The building material comprises the following components: ethylenediaminetetraacetic acid, toluene-2, 4-diisocyanate, a phase change material, cyclohexane, distilled water and an emulsifier; the invention further designs a preparation method of the phase change energy storage building material, and the preparation method comprises the flow of preparing an aqueous phase, emulsifying, polymerizing and separating product to obtain the phase change energy storage building material; the phase change energy storage building material can compound the phase change energy storage material with a proper building material to reinforce the storage capacity, and has good heat storage and temperature adjustment functions, the phase change energy storage building material is stable in chemical properties, free of toxic and irritating odor, low in cost and high in safety high, and the preparation method is simple and easy.