33results about How to "Good low temperature storage stability" patented technology

The invention provides yellowing-resistant, wear-resistant and alcohol-resistant polyurethane resin which is composed of the components of, by weight, 5-20 parts of an isocyanate-type compound, 5-15 parts of a polyester-type polyol compound, 0.2-1.0 parts of a hydroxyl-containing low-molecular-weight compound, 0.5-5 parts of a diamine-type compound, 1-10 parts of an auxiliary agent, and 50-90 parts of an organic solvent. The invention also provides a preparation of the above yellowing-resistant, wear-resistant and alcohol-resistant polyurethane resin and an application thereof in sofa leather. The polyurethane resin has the advantages of simple method and moderate cost. The aliphatic isocyanate and diamine type compounds are introduced into the raw material, such that the yellowing resistance of the product is realized. Polycarbonate diol is introduced, such that the product is provided with excellent wear resistance and alcohol resistance. The solid content of resin is regulated to approximately 20%, such that the resin is provided with good low-temperature storage stability.

The invention provides waterborne multicolor coating with freeze-thaw resistance, basic paint for the waterborne multicolor coating and a method for preparing the basic paint. The basic paint for thewaterborne multicolor coating with the freeze-thaw resistance comprises, by weight, 10-12 parts of hydroxyethyl cellulose aqueous solution, 4-8 parts of dispersing agents, 2-6 parts of defoaming agents, 5-6 parts of coalescing agents, 10-12 parts of antifreezing agents, 0.1-3 parts of pH (potential of hydrogen) regulators, 8-12 parts of titanium dioxide, 80-90 parts of kaolin, 300-350 parts of pure acrylic emulsion, 1-5 parts of sterilizing preservatives, 2-5 parts of thickeners, 0-2 parts of leveling agents and 530-550 parts of deionized water. The waterborne multicolor coating, the basic paint and the method have the advantages that appropriate auxiliaries and emulsion are screened to prepare the basic paint, accordingly, the freeze-thaw stability of products can be guaranteed, and undesirable phenomena such as increase of broken points of multicolor particles, soft color points, frozen color points, post-thickening and the like can be prevented.

The invention discloses a liquid crystal composition, which comprises one or more compounds represented by a general formula II, one or more compounds represented by a general formula M, one or more compounds represented by a general formula A-1, and one or more compounds represented by a general formula A-2. The invention also discloses a display device containing the liquid crystal composition.The liquid crystal composition provided by the invention maintains the proper clearing point, and also has the advantages of large optical anisotropy, large dielectric anisotropy, low rotary viscosity, good low-temperature storage stability, large Kave value, large VHR (initial), large VHR (UV) and large VHR (high-temperature) (ie., good reliability), so that the liquid crystal display device containing the liquid crystal composition has small light scattering and high contrast, and is particularly suitable for a liquid crystal display element driven by an active matrix thin film transistor (AM-TFT).

The invention discloses a liquid crystal composition and its display device. The liquid crystal composition contains one or more compounds selected from compounds as shown in the general formula I-1 and / or general formula I-2; one or more compounds selected from compounds as shown in the general formula II, one or more compounds selected from compounds as shown in the general formula III; and one or more compounds selected from compounds as shown in the general formula IV. The liquid crystal composition provided by the invention has proper optical anisotropy, proper dielectric anisotropy, high clearing point, wide nematic-phase temperature range, fast response speed and good cryogenic storage stability, and is suitable for a liquid-crystal display device. By the use of the liquid crystal composition, the liquid-crystal display device has characteristics of fast response and high reliability, and can normally operate within a wide temperature range.

The invention relates to the technical field of adhesives, and discloses environment-friendly modified white latex and a preparation method thereof. The environment-friendly modified white latex is prepared from the following raw materials in parts by weight: 35 to 50 parts of vinyl acetate, 20 to 40 parts of polyvinyl alcohol, 36 to 64 parts of carboxyl-terminated hyperbranched polyester, 7 to 21 parts of oxidized starch, 0.1 to 0.3 part of an initiator, 3 to 5 parts of an emulsifier, 0.05 to 0.15 part of an auxiliary agent and 300 to 500 parts of water. The above adhesive prepared by the invention is environment-friendly and non-toxic, and almost no VOC is discharged; and heat resistance, the bonding strength and the low-temperature storage stability are also remarkably improved while water resistance is improved.

The invention discloses a liquid crystal composition, which comprises: at least one polymerizable compound of general formula I; and at least one compound of general formula II. The liquid crystal composition provided by the invention has suitable optical anisotropy, suitable dielectric anisotropy and good low-temperature storage stability while maintaining a relatively high clearing point. The present invention also provides a liquid crystal display device comprising the liquid crystal composition. When the liquid crystal composition is applied to a liquid crystal display device, it has excellent display effect.

Provided is a liquid crystal composition, comprising: by weight of the total liquid crystal composition, 1-20% of the compound of formula I; 5-35% of the compound selected from a group consisting of formula II-1, formula II-2, formula II-3, and combinations thereof; 25-50% of the compound of formula III; 5-25% of the compound selected from a group consisting of formula IV-1, formula IV-2, and combinations thereof; and 5-25% of the compound selected from a group consisting of formula V-1, formula V-2, and combinations thereof. The liquid crystal composition has appropriate optical anisotropy and dielectric anisotropy, high speed of response, good low-temperature storage stability, ultraviolet irradiation resistance and heat stability, and is suitable for display modes such as IPS and FFS. Also provided is a liquid crystal display device comprising the liquid crystal composition.

The invention provides a liquid crystal composition. The liquid crystal composition comprises one or more compounds as shown in the general formula I-1 and / or general formula I-2; one or more compounds as shown in the general formula II; one or more compounds as shown in the general formula III; and one or more compounds as shown in the general formula IV. The liquid crystal composition has characteristics of proper optical anisotropy, proper dielectric anisotropy, high clearing point, good cryogenic storage stability, good high-temperature stability and UV stability and the like, is applicable to a liquid crystal display, can effectively reduce driving voltage and also can be applied to a harsh operating environment. The invention also discloses a liquid-crystal display device containing the liquid crystal composition.

The invention discloses a liquid crystal composition, which comprises: one or more compounds selected from general formula I-1 and / or general formula I-2; one or more compounds selected from general formula II and one or more compounds selected from the general formula III. The liquid crystal composition provided by the invention has properties such as suitable optical anisotropy, suitable dielectric anisotropy, higher clearing point, faster response speed and good low-temperature storage stability, and can be applied to liquid crystal displays , so that the liquid crystal display has the characteristics of short response time, high reliability, and can work normally under high temperature and low temperature.

The invention discloses a liquid crystal composition and a display device thereof. The liquid crystal composition comprises: one or more compounds selected from general formula I-1 and / or general formula I-2; one or more compounds selected from general formula II, one or more compounds selected from a compound of general formula III; and one or more compounds selected from general formula IV. The liquid crystal composition provided by the present invention has suitable optical anisotropy, suitable dielectric anisotropy, higher clearing point, wider nematic phase temperature range, faster response speed and good low-temperature storage stability It is suitable for liquid crystal display devices, so that the liquid crystal display devices have the characteristics of fast response, high reliability, and normal operation in a wide temperature range.

The invention discloses a low-temperature-resistant polymer cement waterproof coating, which includes a liquid material and a powder material, and the liquid material and the powder material are compounded according to a weight ratio (0.8-1.5): 1; the liquid material includes the following Components by weight: 70-90 parts of modified polyacrylate emulsion, 0-5 parts of water, 3-6 parts of triethanolamine, 1-5 parts of defoamer; the powder includes the following components by weight : 40-60 parts of cement, 10-15 parts of quartz powder, 10-15 parts of heavy calcium powder, 1-5 parts of diisocyanate; the modified polyacrylate emulsion is composed of acrylate monomers containing hydroxyl groups, epoxy group-containing The siloxane and methacrylic acid were prepared by using seeded emulsion polymerization. The polymer cement waterproof coating prepared by the present application has good stability in low-temperature storage and use, and at the same time, the coating film formed after curing has good low-temperature resistance.

The invention discloses a preparation method of a super-hydrophobic insulator anticorrosive paint. The super-hydrophobic insulator anticorrosive paint is mainly prepared from the following componentsby mixing: 78-85 parts of organosilicon modified waterborne polyurethane emulsion, 32-45 parts of waterborne epoxy resin, 25-30 parts of nanoscale titanium dioxide, 22-30 parts of calcium sulfate, 45-50 parts of an emulsifier, 8-12 parts of dodecylbenzenesulfonic acid, 3-5 parts of dodecylamine, 6-9 parts of modified chitosan, 6-8 parts of nano carbon powder, 2-4 parts of sodium tripolyphosphate,8-10 parts of calcium lignosulfonate and 155-180 parts of deionized water. The anticorrosive paint disclosed by the invention has the advantages of good low-temperature storage stability, good compatibility among raw materials, no obstacle in scraping in a construction process, smooth coating layer, high drying speed, high bonding strength, good construction property, convenience and rapidness, nobad conditions of cracks, pit points and the like, good flexibility, no cracks, strong hydrophobic heat preservation capacity, good temperature resistance, flame retardance and weather resistance.

The invention provides a liquid crystal composition and application thereof. The liquid crystal composition comprises a compound which has a general formula (I) and accounts for 5-35 percent of the total weight of the liquid crystal composition, a compound which has a general formula (II) and accounts for 1-35 percent of the total weight of the liquid crystal composition, a compound which has a general formula (III) and accounts for 40-85 percent of the total weight of the liquid crystal composition and a compound which has a general formula (IV) and accounts for 1-35 percent of the total weight of the liquid crystal composition. The liquid crystal composition has the advantages of extremely high clearing point, high refractive index, high low-temperature storage stability and performance suitable for high optical anisotropy. The liquid crystal composition is used for a liquid crystal element, the image display effect is good, and a smear phenomenon is avoided.

The invention provides a liquid crystal composition which comprises the following components by weight: 1%-80% of a component A, 1%-50% of a component B, 1%-30% of a component C and 1%-25% of a component D, wherein the component A is one or more compounds represented by a formula I; the component B is one or more compounds represented by a formula II; the component C is one or more compounds represented by a formula III; the component D is one or more compounds represented by a formula IV; and the liquid crystal composition has an optical birefringence delta n of 0.08-0.15 and has a moderate refraction range. The liquid crystal composition provided by the invention has low viscosity, good comprehensive properties of dielectric anisotropy, clearing point and optical anisotropy, can increasea corresponding speed of a liquid crystal display, can be used in a TN, ADS, FFS or IPS model display to significantly improve a display effect of the liquid crystal display, and is especially suitable for fast response liquid crystal display devices.

A liquid crystal composition and the use thereof are provided. The liquid crystal composition comprises 15-30% by weight of three or more compounds of general formula I; the general formula I must comprises at least two compounds of general formula I-1; wherein, by weight of the total amount of the liquid crystal composition, the total amount of the compounds of general formula I-1 is no lower than 10%, and the content of each of the compounds of general formula I-1 is no higher than 8%. The liquid crystal composition has appropriately high optical anisotropy, higher dielectric anisotropy, lower threshold voltage, suitable elastic constant, suitable temperature range of nematic phase, good reliability and heat stability, and good low-temperature intersolubility.