1752results about How to "Good miscibility" patented technology

The present invention provides matrixes doped with semiconductor nanocrystals. In certain embodiments, the semiconductor nanocrystals have a size and composition such that they absorb or emit light at particular wavelengths. The nanocrystals can comprise ligands that allow for mixing with various matrix materials, including polymers, such that a minimal portion of light is scattered by the matrixes. The matrixes of the present invention can also be utilized in refractive index matching applications. In other embodiments, semiconductor nanocrystals are embedded within matrixes to form a nanocrystal density gradient, thereby creating an effective refractive index gradient. The matrixes of the present invention can also be used as filters and antireflective coatings on optical devices and as down-converting layers. The present invention also provides processes for producing matrixes comprising semiconductor nanocrystals.

Matrixes doped with semiconductor nanocrystals are provided. In certain embodiments, the semiconductor nanocrystals have a size and composition such that they absorb or emit light at particular wavelengths. The nanocrystals can comprise ligands that allow for mixing with various matrix materials, including polymers, such that a minimal portion of light is scattered by the matrixes. The matrixes of the present invention can also be utilized in refractive index matching applications. In other embodiments, semiconductor nanocrystals are embedded within matrixes to form a nanocrystal density gradient, thereby creating an effective refractive index gradient. The matrixes of the present invention can also be used as filters and antireflective coatings on optical devices and as down-converting layers. Processes for producing matrixes comprising semiconductor nanocrystals are also provided. Nanostructures having high quantum efficiency, small size, and / or a narrow size distribution are also described, as are methods of producing indium phosphide nanostructures and core-shell nanostructures with Group II-VI shells.

Matrixes doped with semiconductor nanocrystals are provided. In certain embodiments, the semiconductor nanocrystals have a size and composition such that they absorb or emit light at particular wavelengths. The nanocrystals can comprise ligands that allow for mixing with various matrix materials, including polymers, such that a minimal portion of light is scattered by the matrixes. The matrixes are optionally formed from the ligands. The matrixes of the present invention can also be utilized in refractive index matching applications. In other embodiments, semiconductor nanocrystals are embedded within matrixes to form a nanocrystal density gradient, thereby creating an effective refractive index gradient. The matrixes of the present invention can also be used as filters and antireflective coatings on optical devices and as down-converting layers. Processes for producing matrixes comprising semiconductor nanocrystals are also provided. Nanostructures having high quantum efficiency, small size, and / or a narrow size distribution are also described, as are methods of producing indium phosphide nanostructures and core-shell nanostructures with Group II-VI shells.

The invention is directed to a two-pack solvent-based ambient curable coating composition comprising a binder of a hydroxyl and crosslinking components. The hydroxyl component includes a linear or branched cycloaliphatic moiety-containing reactive oligomer or blend of oligomers with a weight average molecular weight not exceeding 3,000, a polydispersity not exceeding about 1.7 with at least 2 hydroxyl groups, at least 1, on average, being a primary hydroxyl group. The reactive oligomer is formed by the reaction of an oligomeric acid with monofunctional epoxy. The crosslinking component includes one or more of an oligomeric crosslinker containing at least 2 isocyanate groups. The coating composition of the invention is particularly suited in automotive refinish coatings.

This invention relates to a aquosity industry anti-rust paint and its preparation method. According to weight it includes 8 to 11% aquosity acroleic acid modified epoxy, 33 to 40% acroleic acid latices, 0.1 to 0.3% defoamer, 0.05 to 0.15% wetting agent, 0.3 to 0.5% dispersant, 0.3 to 0.5% rust-resistant agent, 7.5 to 9% iron oxide red, 6 to 8% French chalk, 5 to 10% modified zinc phosphate, 2.5 to 10% trimerization aluminum phosphate, 3 to 3.5% precipitated baryte , 0.5 to 1% zinc oxide, 3 to 5% mica ferric oxide, alcohol ester twelve 1 to 2%, triethanolamine 1 to 2%, thickening agent 0.3 to 0.6%, preservative 0.05 to 0.1%, 5 to 20% de-ionized water, through pretreatment, color paste preparation and blending and adjusting to gain product.

The invention relates to the use of 1,1,1,2-tetrafluoroethane for increasing the miscibility of 2,3,3,3-tetrafluoropropene with a lubricating oil, and in particular with a polyalkylene glycol oil. In this regard, the invention provides heat-transfer compositions and also equipment and processes using these compositions.

The invention relates to heat transfer agents and heat transfer compositions containing hydrocarbon lubricating oils and halogentaed alkene heat transfer fluid that promote oil flow and provide for improved oil return. The heat transfer compositions are useful in various heat transfer systems such as refrigeration, cooling, air conditioning, chiller operations.

The invention discloses a compound. The structure of the compound is shown in a formula I which is shown in the description. The compound can be used as a liquid crystal compound and overcomes the problem that traditional dibenzothiophen liquid crystals are low in solubility, and therefore the compound can be better applied in the field of liquid crystal materials. The invention further disclosesa liquid crystal medium containing the compound and application thereof.

A refrigerating machine oil including a refrigerating machine oil basis such as polyol ester oil and an additive polyol ester oil is mixed to a refrigerant including 2,3,3,3-tetrafluoropropene, 1,3,3,3-tetrafluoropropene or the like. A compressor for refrigeration and air-conditioning including the mixture charged therein is used. The composition of the additive polyol ester oil is 1 to 30 wt %.The wear resistance of the compressor is improved, and the efficiency of a refrigerating and air-conditioning apparatus using the compressor is enhanced.

The invention relates to a composition comprising:a heat-transfer fluid comprising from 15% to 30% ammonia and from 70% to 85% 2,3,3,3-tetrafluoropropene; anda lubricant oil comprising a polyalkylene glycol.The invention also relates to the use of ammonia for increasing the miscibility of 2,3,3,3-tetrafluoropropene with the polyalkylene glycol, and vice versa.

The invention is to provide liquid crystalline compounds having a negative and extremely large dielectric anisotropy value and a small optical anisotropy value at the same time; liquid crystal compositions comprising the compound; and liquid crystal display devices fabricated by using the liquid crystal composition; the liquid crystalline compounds have 2,3-dihalogenophenylene moiety and are expressed by formula (1)wherein Ra and Rb each independently represents a linear or branched alkyl having 1 to 10 carbon, any methylene in the alkyl may be replaced by -O-, -S-, -CH=CH-, or -C=C-, but -O- is not successive, and any hydrogen in the alkyl may be replaced by halogen; rings A1 to A4 each independently represents trans-1,4-cyclohexylene, cyclohexene-1,4-diyl, pyridine-1,4-diyl, pyrimidine-2,5-diyl, or 1,4-phenylene, wherein at least one hydrogen in these rings may be replaced by halogen, and any nonadjacent methylene in cyclohexane ring may be replaced by -O-; Y1 and Y2 each independently represents F or Cl; Z1, Z2 and Z3 each independently represents a single bond, -CH2CH2-, -(CH2)4-, -COO-, -OCO-, -CH2O-, -OCH2-, -CF2O-, or -OCF2-; and l, m and n each independently is 0, 1 or 2, and the sum of l+m+n is 3 and less.

The invention discloses a novel rubber protective wax which comprises the following components in percentage by weight: 14-20 percent of paraffin, 55-60 percent of mixed crystal wax, 24-30 percent ofmicrocrystalline wax and 1-2 percent of polyethylene wax. The invention has favorable seal performance and can reinforce the ozone and ageing resistance of a rubber product and prolong the service life of the rubber product.

The invention discloses a method for producing biodiesel in the presence of a supported solid acid catalyst and a solubilizing agent. The method is characterized in that: (1) a hydrophobic solid acid catalyst which is high in catalytic efficiency, recyclable, easily separable and simple in post treatment process is adopted; (2) a cosolvent is introduced during a reaction process to improve reaction conditions and reduce reaction temperature and pressure; (3) the cosolvent and lower alcohols used in the reaction can be recycled; and (4) equipment corrosion and environmental pollution are avoided and advantages of low requirements on equipment corrosion, short technical process, environmental-friendly production, low investment in equipment and low operation cost are achieved.

The invention relates to a preparation method of modified cation waterborne polyurethane emulsion containing hydrophilic and hydrophobic side long chains and a product thereof. The method comprises the following steps that raw materials are prepared; polyester glycol dehydration pretreatment is carried out; polyester glycol obtained after dehydration pretreatment is subjected to a prepolymerization reaction with an end alkyl polysiloxane linear body, a nonionic chain extender, a functionality chain extender and diisocyanate under catalyzing of a polymerization catalyst so that a prepolymer can be obtained; the prepolymer reacts with a nonionic chain extender and a part diluent to prepare an intermediate; the intermediate reacts with a silane coupling agent, and is emulsified to prepare the modified cation waterborne polyurethane emulsion. The product is a polyester type cation waterborne polyurethane high-polymer material containing hydrophilic and hydrophobic side long chains, wherein polysiloxane is embedded into a main chain of the material, a side chain is grafted with long-chain polyether and long-chain alkyl, and the silane coupling agent is connected into the tail end of the material; the film-forming ability is high, and serving as a film, the emulsion has obvious water-repellent, antifouling and easy dirt-removing abilities, is excellent in compatibility with a cation softening agent, and has an excellent low-temperature soft feature; the product is safe, environmentally friendly and convenient to use.

A thermoplastic resin composition contains (i) a polylactic acid, (ii) a polyolefin, and (iii) a compatibilizer (functional group-containing polymer that includes a functional group selected from functional groups X including a carboxyl group, an acid anhydride group, an epoxy group, a (meth)acryloyl group, an amino group, an alkoxysilyl group, a hydroxyl group, an isocyanate group, and an oxazoline group). The thermoplastic resin composition contains (iii-1) a functional group-containing hydrogenated diene polymer and (iii-2) a functional group-containing olefin polymer as the component (iii).

The invention relates to a water-based two-component fluorosilicone acrylic anticorrosive paint. A film forming material component consists of 50-70 parts of water-based hydroxyl fluorosilicone acrylic resin, 20-40 parts of a pigment / filler, 1-10 parts of an auxiliary and 3-20 parts of de-ionized water, and a curing agent component comprises 5-10 parts of aqueous polyisocyanate and 1-5 parts of a thinner, wherein the weight ratio of the film forming material to the curing agent is 100: (5-15). The preparation method comprises the steps of dispersing and grinding the de-ionized water, the auxiliary and the pigment / filler, adding the water-based hydroxyl fluorosilicone acrylic resin, and uniformly stirring the prepared film forming material with the curing agent to obtain the paint. The anticorrosive paint has the advantages that a polysiloxane-polyurethane segmented copolymer is synthesized by taking the polysiloxane as a soft segment, thus enhancing water resistance, corrosion resistance and other performances; the shell raw material, which includes a fluorine-containing acrylic monomer, guarantees excellent ultraviolet and nuclear radiation resistance, flexibility, wear resistance and durability of coating. The paint is good in compatibility, self-dried at normal temperature, non-toxic and tasteless, low in volatile organic compound (VOC) and strong in coating adhesion, and can be widely applied to large steel structure, bridge, boat and other fields.

Herein is disclosed an oxygen barrier composition comprising an oxygen barrier polymer and an oxygen scavenging polymer. The composition can be in the form of a physical blend or a cross-linked blend, and can further comprise a compatibilizer, a transesterification catalyst, or both. Preferably, the oxygen barrier polymer is poly(ethylene / vinyl alcohol) (EVOH), polyethylene terephthalate (PET), or polyamide other than MXD6. Preferably, the oxygen scavenging polymer comprises an ethylenic backbone and a pendant cyclic olefinic group, or the oxygen scavenging polymer is a polyamide derived at least in part from a xylene diamine-based monomer.The oxygen barrier composition can be formed into an oxygen barrier layer of a packaging article. Such layers and articles, and methods for making same, are also disclosed.

A high-softening point emulsified asphalt water-based drilling fluid additive and a preparation method thereof. The drilling fluid additive comprises 40-70 wt% of asphalt with a softening point of 150 DEG C-240 DEG C, 35-50 wt% of water, 0.02-2 wt% of an auxiliary agent, 0.05-5 wt% of an emulsifier, and 0.01-1 wt% of a stabilizer; the charge of the additive is anion; the storage stability for 1 day is not more than 1%; the storage stability for 5 day is not more than 5%; the high-temperature high-pressure filter loss at 220 DEG C and at 3.45 MPa is not more than 25 ml. The preparation method of the additive comprises the following steps: mixing water, the anion emulsifier, the stabilizer, and the auxiliary agent, then adding the asphalt fine powder with a softening point of 150 DEG C-240 DEG C into the above solution, and stirring. The drilling fluid additive provided by the invention has good high-temperature high-pressure filter loss effect, and is suitable for drilling of high-temperature high-pressure deep wells and extradeep wells.

The invention relates to a multifunctional alcohol fuel additive, aiming at resolving such technical problems existing in prior alcohol fuel as the mutual solubility, the power performance and the stability are poor, cleaning degrees of oil products and fuel oil system are poor and the corrosion and the air resistance of methanol gasoline can not be effectively handled. The additive comprises following components in portion by volume: 50 to 60 portions of cosolvent, 5 to 10 portions of corrosion inhibitor, 0 to 30 portions of detergent dispersant, 0 to 10 portions of rubber plasticizer and 0 to 15 portions of vapor pressure inhibitor. The additive has the advantages of high octane value, strong power performance, good stability, desirable mutual solubility, environmental protection and energy conservation, and can effectively inhibit metallic corrosion, improve the cleanness of oil products and resolve the problems of air resistance.

The invention relates to a composite heat stabilizer for hydrophobic nano-hydrotalcite PVC, comprising the following raw materials according to the mass percent: 30-50 of calcium stearate, 10-20 of zinc stearate, 10-30 of hydrophobic nano-hydrotalcite, 5-15 of lubricant, 4-7 of surface modifier and 5-15 of auxiliary heat stabilizer. With the method of coprecipitation, the hydrophobic nano-hydrotalcite is added with eunatrol to prepare hydrophobic nano-hydrotalcite including Mg and Al with the mol ratio of 2-3:1. The nano-hydrotalcite prepared by the invention has good hydrophobic nature. Good compatibility with a PVC basal body can be achieved if the nano-hydrotalcite is used in a composite heat stabilizer for PVC. Advantages of difficult precipitation and good stabilizing effect can be achieved when the nano-hydrotalcite is used as a stabilizer for plastic processing of PVC, and the like. The addition of the hydrophobic nano-hydrotalcite can reduce the balance torque, improve the processing property and reduce the cost. The preparation method causes no pollution and has low energy consumption.

The present invention relates to the field of liquid crystal materials, and specifically discloses a liquid crystal composition containing a 1,3-dioxane compound and application of the same in a liquid crystal display device. The liquid crystal composition of the invention comprises the following components in parts by weight: 1-24 parts of one or more compounds selected from compounds represented by the formula (I), 1-80 parts of one or more compounds selected from compounds represented by the formula (II), 1-35 parts of one or more compounds selected from compounds represented by the formula (III), and 0-40 parts of one or more compounds selected from compounds represented by the formula (IV). An optical birefringence delta n of the liquid crystal composition is between 0.08 to 0.15, and has a moderate refraction range. The liquid crystal composition provided by the invention not only has characteristics like a broader nematic temperature range, a high resistivity, a high charge holding rate, and a low viscosity, but also has a faster response speed and good cryogenic storage stability. When the liquid crystal composition is applied to a liquid crystal display, particularly a display of the TFT-LCD mode, the display effect of the liquid crystal display can be improved significantly.

The use of 1,1,1,2-tetrafluoroethane for increasing the miscibility of 2,3,3,3-tetrafluoropropene with a lubricating oil, and in particular with a polyalkylene glycol oil. Further included are heat-transfer compositions and also equipment and processes using these compositions. Also, a kit including a heat-transfer fluid including 2,3,3,3-tetrafluoropropene and 1,1,1,2-tetrafluoroethane, and a lubricant oil including a polyalkylene glycol, for use in a heat-transfer installation including a vapor compression circuit.

The invention discloses a high weather-proof, multiple-effect, environmentally-friendly PVC composite heat stabilizer which is composed of the following raw materials in percentage by weight: 20-40% of calcium stearate, 15-25% of zinc stearate, 10-30% of hydrophobicity nano-hydrotalcite, 1-1.5% of hyperdispersant, 5-15% of lubricating agent, 4-7% of surface modifier and 5-15% of assistant heat stabilizer, wherein, hydrophobicity nano-hydrotalcite is prepared with a coprecipitation method by adding sodium oleate, and the molar ratio of Mg to AL in hydrophobicity nano-hydrotalcite is 2-3:1; the hyperdispersant is copolymer of maleic anhydride-sodium allyl sulfonate-crylic acid polyethylene glycol monoester. The nano-hydrotalcite prepared by the invention has better hydrophobic property and favorable compatibility with PVC matrix. Hydrophobicity nano-hydrotalcite and hyperdispersant are added to lower balancing torque, improve handling characteristics and weather resistance and lower cost. The preparation method of the invention has no pollution and low energy consumption.

A tamper evident closure (1) includes a housing (5) containing a blister pack (2) and a substrate (3), wherein the blister pack (2) contains a first reagent which is visible prior to first opening and the substrate (3) contains a second reagent. First opening of the closure ruptures the blister pack thereby exposing the first reagent to the second reagent and effecting a reaction that causes a visual change that signals the closure has been opened. The tamper evident closure of the present invention is primarily intended to be used as an anti-counterfeit measure on a spirit or pharmaceutical bottle. In the preferred embodiment, the closure incorporates a liquid that when brought into contact with a reagent chemical contained in an absorbent pad, effects an irreversible color change. This color change will indicate to a consumer the bottle has been previously opened or tampered with. The design makes it very difficult for a counterfeiter to cover up or eradicate the visible effects. In particular, the only way a counterfeiter could do this would be to put in a replacement blister and an absorbent pad. Filling a blister pack with a liquid is a highly specialist task which makes replication very difficult. The ability to control the color change to complement the branded goods provides a way of building up consumer recognition of the product and thereby establishing confidence in those products that carry the tamper evident closure of the present invention.

The present invention provides a cyclic olefin addition copolymer which has a reactive silyl group having a specific structure, excels in optical transparency, heat resistance, and adhesion, and is capable of producing a crosslinked product having improved dimensional stability, solvent resistance, and chemical resistance. The present invention also provides a process for producing the cyclic olefin addition copolymer, a crosslinking composition, a crosslinked product and a process for producing the same, and an optically transparent material (transparent resin film) comprising the cyclic olefin addition copolymer. The optically transparent material excels in optical transparency and heat resistance, exhibits improved dimensional stability, adhesion, solvent resistance, and chemical resistance, and is capable of improving fragility and preventing occurrence of cracks in the film.