117 results about "Hexamethylene diisocyanate trimer" patented technology

The invention discloses a preparation method of a hexamethylene diisocyanate tripolymer curing agent, which comprises the following steps: putting an isocyanate monomer into a reaction vessel in a nitrogen gas protective atmosphere, dropwisely adding an isocyanate trimerization catalyst containing 2-hydroxyalkyl quaternary ammonium hydroxide within 1-1.5 hours, reacting while stirring at 30-80 DEG C for 2-24 hours, wherein the mass of the isocyanate trimerization catalyst accounts for 0.01-0.5% of that of the isocyanate monomer; when the mass percent of free NCO groups is measured to be 30-40%, adding an isocyanate trimerization inhibitor, wherein the mass of the isocyanate trimerization inhibitor accounts for 0.1-1% of that of the isocyanate monomer; and feeding the obtained polyurethane tripolymer curing agent into a separation device through a distributor at a feed rate of 1-20g / min, and separating to obtain the hexamethylene diisocyanate tripolymer curing agent. The curing agent disclosed by the invention is favorably compatible with resin, and has ultraviolet irradiation resistance, high compatibility, low viscosity and high mechanical strength.

The invention provides a water-based woodware seal primer which comprises a component A and a component B. The component A is composed of the following ingredients in parts by weight: 70-90 parts of water-based hydroxy acrylic resin, 4-6 parts of film forming aid, 0.2-0.5 part of defoaming agent, 0.2-0.5 part of wetting agent, 1-3 parts of sanding aid, 0.5-1 part of thickener, 1-2 parts of tannic acid polymerization inhibitor and the balance of water. The component B is a water-based HDI (hexamethylene diisocyanate) tripolymer. The water-based woodware seal primer provided by the invention is a water-based woodware anti-bleeding seal primer, can reduce the leaching of tannic acid, and has better binding force for the substrate, thereby enhancing the sealing effect. When being especially used for wood substrates with higher tannic acid content, the seal primer can implement favorable seal effect on the tannic acid in the water-based system, thereby avoiding the resulting common application defects.

The invention discloses an ultra-low-temperature-resistant halogen-free flame-retardant glass fiber reinforced hard polyurethane thermal insulation material produced from an environment-friendly foaming agent, and a preparation method thereof, wherein the ultra-low-temperature-resistant halogen-free flame-retardant glass fiber reinforced hard polyurethane thermal insulation material comprises reaction type halogen-free flame-retardant polyether polyol, ordinary hard foam polyether, polymethylene polyphenyl polyisocyanate, a 1,6 hexamethylene diisocyanate trimer, a continuous glass fiber felt with the surface treated with a coupling agent, an environmentally friendly physical foaming agent, a surfactant, and a compound delay catalyst. According to the present invention, by using the HFO type fourth-generation environmental-protection foaming agent and the halogen-free reaction type flame-retardant polyether, the prepared material can be used in the -173 DEG C ultra-low temperature environment, and has the product density of 120-140 kg / m<3>, wherein under the condition of -173 DEG C, the thermal conductivity of the product is less than 18 mw / m.K, the porosity is more than 95%, the Z direction compressive strength is greater than 2.7 MPa, the Z- direction tensile strength is more than 1.3 MPa, the X direction tensile strength and the Y direction tensile strength are greater than 2.8 MPa, the Xz direction shear strength and the Yz direction shear strength are greater than 1 MPa, and the flame retardant performance can achieve the B2 standard of GB8624-2012.

The invention discloses primer-topcoat combined anti-corrosion paint suitable for various base materials. The anti-corrosion paint is prepared from, by weight, 7-10 parts of components A and 1 part of components B in a combined mode, wherein the components A is prepared from, by weight, 30-45% of low hydroxyl acrylic acid resin, 6-14% of solvent, 1.8-5 parts of auxiliaries, 0.5-2% of organic bentonite, 0.5-2% of hydrophobic fumed silica, 31-57% of pigment filler and 0.2-1% of leveling agent; the components B is prepared from, by weight, 45-55% of hexamethylene diisocyanate tripolymer and 45-55% of solvent. A preparation method includes the steps that the solvent is added into the low hydroxyl acrylic acid resin, the auxiliaries, the organic bentonite, the hydrophobic fumed silica and the pigment filler are added, stirring and grinding are performed, the viscosity is adjusted, impurities are removed, and then the components A are obtained; the hexamethylene diisocyanate tripolymer and the solvent are mixed to obtain the components B, and the components A and the components B are mixed according to the proportion. The primer-topcoat combined anti-corrosion paint has excellent adhesive force for aluminum products, stainless steel plates and galvanized sheets, has physical and mechanical properties of salt spray resistance and others of anti-corrosion primers, and is excellent in water resistance, acid and alkali resistance and weather resistance, wherein the weather resistance is over 1200 hours.

The invention discloses a polyaspartate polyurea adhesive and a preparation method thereof. The polyaspartate polyurea adhesive comprises a component A and a component B spaced from each other before being used, wherein the component A and the component B are mixed at a weight ratio of 4 to (1-1.05) when being used; the component A comprises the following components in parts by weight: 4.0-5.0 parts of polyaspartate polyurea, 4.0-4.50 parts of fillers, 0.005-0.01 parts of a defoamer and 0.005-0.01 parts of a leveling agent; the component B is hexamethylene diisocyanate trimer. According to the polyaspartate polyurea adhesive, the component A and the component B are mixed, so that the bonding strength in a bonding process is high and especially the bonding strength between the adhesive and a cement matrix is high; moreover, the adhesive has excellent performances of chemical corrosion resistance, water resistance, weather resistance, temperature resistance, low VOC (volatile organic compounds), environmental protection and the like.

The invention discloses a two-component water-based hydroxyl acrylic coating composed of a component A and a component B, wherein the weight ratio of the component A to the component B is 1 to (1-3). The component A comprises the raw materials in parts by weight: 40-80 parts of modified hydroxyl acrylic resin, 5-20 parts of water-based hydroxyl fluorosilicone acrylic resin, 5-15 parts of a water-based nano alumina dispersion body, 5-10 parts of a water-based nano silica dispersion body, 2-6 parts of ethylene glycol monoethyl ether acetate, 1-3 parts of a levelling agent BYK306, 0.2-0.8 part of a catalyst dibutyltin dilaurate, and 1-5 parts of xylene. The component B comprises the raw materials in parts by weight: 10-20 parts of a hexamethylene diisocyanate trimer, 1-5 parts of HDI biuret, and 20-30 parts of a diluent. The two-component water-based hydroxyl acrylic coating has good water resistance and excellent corrosion resistance.

The invention provides a novel high-water-whitening-resistance aqueous artificial granite composite coating finishing varnish. The finishing varnish is composed of a component A and a component B, wherein the component A comprises the following components, by mass, 40-50% of an aqueous hydroxy fluorocarbon emulsion, 20-30% of an aqueous hydroxy acrylic resin, 0.2-0.4% of a leveling agent, 0.2-0.4% of an antifoaming agent, 0.1-0.2% of a drier and 20-30% of water; and the component B can be dissolved or emulsified in water, and is a hydrophilic modified hexamethylene diisocyanate trimer solution having a mass percent of 75-85%. The invention also provides a preparation method of the finishing varnish. The finishing varnish is obtained by uniformly mixing the component A and the component B according to a weight ratio of the component A to the component B of 6-10:1, and allowing the obtained mixture to stand for 10-15min for use. An artificial granite coating is finished through the self-drying fluorocarbon finishing varnish via the two aqueous components at normal temperature in the invention to solve the water-whitening resistance problem. The finishing varnish provided by the invention has the advantages of film formation through normal temperature curing and drying, good endurance, simple construction, and realization of direct spraying or roller coating on the surface of the aqueous artificial granite coating; and the coating has the advantages of excellent weatherability, excellent self cleaning performance, and excellent water-whitening resistance.

The invention relates to the technical field of solar cell back panels, particularly a solar back panel transparent polyurethane paint and a preparation method thereof. The transparent polyurethane paint is a double-component system. The component A is prepared from the following raw materials in parts by weight: 5-50 parts of acrylic resin, 30-70 parts of fluororesin, 10-20 parts of organic solvent, 1-3 parts of catalyst, 1-3 parts of ultraviolet absorbent and 1-2 parts of defoaming agent. The component B is an aliphatic polyisocyanate curing agent, and the aliphatic polyisocyanate curing agent comprises at least one of hexamethylene diisocyanate biuret, hexamethylene diisocyanate tripolymer and isophorone diisocyanate tripolymer. The components A and B are mixed according to the NCO / OH ratio of 0.9-1.2 to obtain the transparent polyurethane paint. The transparent polyurethane paint has the advantages of lower cost, accessible raw materials, excellent weather resistance, excellent corrosion resistance, excellent adhesive force, excellent ultraviolet resistance and excellent hydrolysis resistance.

The invention relates to sprayed and coated odorless polyurethane floor paint which consists of a main agent, a solidifying agent and a diluent, wherein the main agent comprises the following components in percentage by weight: 64-70 percent of odorless alkyd resin, 19.0-25.0 percent of a solvent, 0.5-1.0 percent of a de-foaming agent, 0.1-0.5 percent of a flatting agent, 2-5 percent of a anti-settling agent, 0.5-1 percent of a dispersing agent and 3.0-8 percent of a matting agent; the solidifying agent comprises the following components in percentage by weight: 40.0-50.0 percent of a toluene diisocyanate trimer, 20.0-30.0 percent of 6-hexamethylene diisocyanate trimer and 20.0-30.0 percent of butyl acetate; the diluent comprises the following components in percentage by weight: 30.0-40.0 percent of butyl acetate, 20.0-30.0 percent of dimethyl carbonate, 30.0-40.0 percent of propylene glycol monomethyl acetate. A product construction way of the sprayed and coated odorless polyurethane floor paint adopts machine spraying and coating, and after construction, floors are free from odor after one night.

The invention provides a bi-component polyurethane coating, and relates to the field of coatings. The bi-component polyurethane coating is composed of a component A and a component B. The component A comprises, by weight, 15-25 parts of hydroxy acrylic resin, 18-25 parts of polyacrylate aqueous dispersion, 15-19 parts of padding, 5-9 parts of additives and 4-7.5 parts of linear saturated polyester, wherein the hydroxyl value of the linear saturated polyester ranges from 15 mgKOH / g to 20 mgKOH / g. The component B comprises, by weight, 15-25 parts of isocyanate curing agent solvent and 30-40 parts of solvent, wherein the isocyanate curing agent solvent is one of or a mixture of two or more of hexamethylene diisocyanate trimer, hexamethylene diisocyanate trimer and isophorone diisocyanate trimer. The bi-component polyurethane coating can allow the ratio of the component A to the component B to float within a small range, and high practicability is achieved.

The imitation metal fluorocarbon paint includes component A containing fluorocarbon resin (53%), metal pigment paste, wetting dispersing agent, cellulose acetate-butyrate, colour paste, antisettling sagging agent and solvent and component B containing hexamethylene diisocyanate tripolymer. Their mixing ratio is A:B=10-14:1, according to the above-mentioned mixing ratio, the imitation metal fluorocarbon paint can be made up. It possesses the following advantages: 1. it can be solidified and film-formed at normal temp.; 2. it can be directly spray-coated on the surface of external wall of cement building; 3. its construction is simple, its cost is 1 / 5 of that of baked aluminium curtain wall; and 4. said paint not only can be used for decorative protection of wall body but also can be used in the fields of steel and iron structure, wooden product and plastics.

The present invention provides an environment-friendly, wear-resistant and highly weather-resistant polyurethane enamel and a preparation method thereof. The enamel includes the following components: Component A: water-based hydroxyacrylic resin, water-based polyurethane emulsion, hydroxymethyl cellulose, titanate coupling agent , Stabilizer, leveling agent, wetting and dispersing agent, emulsifier, pigment and filler, deionized water; component B: water-based hexamethylene diisocyanate trimer. The enamel is composed of two components, with water-based hydroxyacrylic resin, water-based polyurethane emulsion and hydroxymethyl cellulose as the main components of A component, and water-based hexamethylene diisocyanate trimer as B component, which can Effectively improve the hardness of enamel paint film, the composition design is reasonable, dilute with deionized water as solvent, instead of organic solvent, friendly to the environment, improve wear resistance, strong adhesion, good ductility, high temperature resistance, long service life, When coating, roller coating is used instead of spray coating, which can effectively improve the production environment and benefit the health of workers.

The invention discloses an antibacterial / antifogging coating based on N-hydroxyethyl acrylamide and a preparation method thereof. Firstly, a random copolymer of the N-hydroxyethyl acrylamide, a quaternary ammonium salt and perfluoroalkyl methacrylate is synthesized through free radical polymerization, and then the random copolymer is thermo-crosslinked with a hexamethylene diisocyanate trimer under catalysis of dibutyltin dilaurate to form a film. The N-hydroxyethyl acrylamide with high hydratability and the positively-charged quaternary ammonium salt enable the coating to have the propertiesof bacterial adhesion resistance and sterilization, synergistic bacterial resistance is achieved, and the N-hydroxyethyl acrylamide with the high hydratability and the positively-charged quaternary ammonium salt both contain hydrophile groups so that the coating can be made to have the good antifogging property; the stability of the coating is improved advantageously through introduction of the perfluoroalkyl methacrylate; and the prepared coating is good in water resistance and high in transparency, can be used for the surfaces of various base materials, shows the good antibacterial propertyand antifogging property, and thus has practical application value in the field of medical devices.

The invention relates to an ultraviolet ray resistant coating for high temperature interface construction and the preparation method thereof. One portion of hexa-methylene diisocyanate trimer-modified polyisocyanate, 0.1-0.4 portions of xylene and 0.1-0.3 portions of ammonia ester level butyl acetate are mixed together to obtain A solution; 0.01-0.05 portions of unsaturated polybasic carboxylic acid polymer solution, 0.1-0.4 portions of a mixer which are made of xylene, bivalency mixed acid dimethyl ester, isophorone according to the proportion of 65:25:10, 0.05-0.2 portions of nanometer level zirconia, one portion of hydroxy acrylic acid, 0.1-0.2 portions of organosilicon-modified acrylic resin, 0.2-0.4 portions of saturated polyester, 0.2-0.6 portions of rutile type white titanium pigment which has been enveloped by aluminum and has been worked organically, 0.01-0.1 portions of silicon dioxide powder, 0.01-0.5 portions of calcined kaolin, and 0.002-0.01 portions of acrylic ester copolymer solution are mixed together to obtain B solution; one portion of A solution and 8-12 portions of B solution are mixed together for being used as anticorrosive paint on external surfaces of pipelines, storage tanks and steel constructions in high temperature areas.

The invention discloses aqueous finishing vanish for liquid marble paint finishing. The aqueous finishing vanish is excellent in weather resistance, self cleaning property and waterproof whitening resistance, rapid to dry, high in hardness, good in gloss, excellent in durability and long in service life of a coated layer. The aqueous finishing vanish consists of a component M and a component N, wherein the component M consists of the following components in percentage by mass: 40-50% of an aqueous hydroxyl fluorocarbon emulsion, 20-30% of aqueous hydroxyl acrylic acid resin, 0.1-0.3% of a coupling agent, 0.15-0.35% of a stabilizer, 0.2-0.4% of a leveling agent, 0.2-0.4% of a defoaming agent, 0.1-0.2% of a drier, 0.2-0.5% of a substrate moistening agent and 50-70% of deionized water; and the component N consists of the following components in percentage by mass: 15-20% of a hydrophilic modified hexamethylene diisocyanate tripolymer solution, 0.1-1.0% of a corrosion and mildew preventive, 0.3-0.6% of an anti-freezing agent and 0.15-0.35% of a pH regulator.

The invention discloses a method for preparing a solvent-free two-component polyurethane cooking adhesive, and discloses in detail the preparation of glue A, glue B and the preparation of the target object, wherein the glue A is made of polyether polyol with a molecular weight of 1000-2000 , Liquefied MDI (NCO% = 33.5) and hexamethylene diisocyanate trimer are dehydrated for 2 hours at 100-120°C under vacuum-0.1MPa conditions, and the water content of the detection system is less than 0.05% is qualified, and the temperature is lowered to 40 prepared at ℃; glue B is prepared from polyethylene glycol, 1,3-butanediol, adipic acid, and isophthalic acid with tetrabutyl titanate catalyst; 7 Mix to obtain a solvent-free polyurethane adhesive. The advantages of this new solvent-free two-component polyurethane retort adhesive: excellent retort resistance and peel strength. The preparation process is simple, cheap and pollution-free.

The invention belongs to the field of all-solid-state flexible batteries, and discloses an alkali-resistant dual-network hydrogel flexible electrolyte as well as a preparation method and application thereof. The preparation method of the alkali-resistant dual-network hydrogel flexible electrolyte comprises the following steps: uniformly mixing a sodium acrylate aqueous solution, a chitosan acidicaqueous solution, an initiator, N, N-methylene bisacrylamide and an aqueous hexamethylene diisocyanate tripolymer to form a free radical polymerization system, and carrying out free radical polymerization to obtain alkali-resistant dual-network hydrogel; and soaking the obtained alkali-resistant double-network hydrogel in an alkaline aqueous solution to obtain the alkali-resistant double-network hydrogel flexible electrolyte. The hydrogel permeated by a 6M KOH aqueous solution obtained according to the invention, as an electrolyte, still exhibits a stretchability of more than 500% and an ionicconductivity of 0.18 S.cm-1. And meanwhile, the prepared zinc-air battery shows excellent flexibility.

The invention belongs to the technical field of coatings and particularly relates to weather-resistant automobile repair varnish and a preparation method thereof. The varnish is prepared from a component A and a component B in the weight ratio being 2:1 through mixing. The component A comprises raw materials in percentage by mass as follows: 10%-20% of chlorotrifluoroethylene / vinyl ether copolymerization resin, 58%-68% of fluorine modified hydroxyl acrylic acid, 17%-27% of a solvent A, 0.1%-0.6% of a leveling agent and 0.01%-0.05% of an organic tin drier; the component B comprises raw materials in percentage by mass as follows: 30%-40% of a hexamethylene diisocyanate trimer and 60%-70% of a solvent B. A film formed by the weather-resistant automobile repair varnish is flat and smooth, hasexcellent adhesion, hardness and other properties, has excellent weather resistance, is not prone to pulverization after being subjected to Q-UVB artificial accelerated aging for 5,000 h, has the gloss loss rate of 15% or below and the chromatic aberration delta E of 3 or below and has good application effects.

The invention relates to a polyphenylene sulfide coil coating which comprises the following components in parts by weight: 9-30 parts of polyphenylene sulfide resin, 9-30 parts of combined resin, 2-6 parts of a curing agent, 10-19 parts of thermal resistant pigment, 45-57 parts of a mixed solvent and 0.5-1.5 parts of an additive, wherein the sum of the components is 100 parts by weight; the polyphenylene sulfide resin is of a coating grade or polyphenylene sulfide oligomer; the combined resin is one or more of polyphenyl ether, polyether-ether-ketone, polytetrafluoroethylene, thermoplastic acrylic resin and polyvinylidene fluorine; the curing agent is full-methyl etherification amino resin, a sealed hexamethylene diisocyanate tripolymer, thermosetting acrylic resin and full-methyl etherification amino resin, or a mixture of the thermosetting acrylic resin and the sealed hexamethylene diisocyanate tripolymer, wherein the mass ratio of the thermosetting acrylic resin and the sealed hexamethylene diisocyanate tripolymer is (1-2):1. The properties such as the acid and alkali resistance and the water boiling resistance of the coil coating are far better than those of resistant medium requirements on ordinary coil coating products of the national standard.

The invention discloses a hydrogel flexible strain sensor with a low Young modulus. The hydrogel flexible strain sensor is prepared from a waterborne hexamethylene diisocyanate trimer (WHDT), N,N-methylene bisacrylamide (MBAA) and an acrylamide monomer jointly, wherein the WHDT and the MBAA serve as a synergistic crosslinking agent, and an impregnation method is adopted to polymerize a polypyrroleconducting layer. According to the hydrogel flexible strain sensor, hydrogel displays high stretchability and powerful mechanical properties and meanwhile has a low Young modulus, so that the strainsensor is comfortable to wear; and the strain sensor has fatigue resistance and good strain resistance sensitivity and is transparent so that the light transmittance is as high as 87%. By use of the impregnation method, ultraviolet light can be absorbed, the light transmittance is easy to control, and the strain sensor has broad application prospects in the fields of wearable and electronic equipment, artificial skin and stretchable electronic equipment.

The invention relates to a triureido organic gel factor, a preparation method and application thereof. The triureido organic gel factor takes hexamethylene diisocyanate trimer and saturated primary amine as the raw materials for one-step reaction preparation. By heating dissolving and cooling gelling of the triureido organic gel factor, the high-density hydrocarbon fuel exo-tetrahydrodicyclopentadiene can be prepared into an organic gel material. The triureido organic gel factor synthesis steps are simple, the conditions are mild, and no special synthesis device is needed. The triureido organic gel factor can make the high-density hydrocarbon fuel exo-tetrahydrodicyclopentadiene into an organic gel material, the gel material has a simple preparation process, can realize mass preparation, and has very good application prospects in high-energy gel propulsion systems.

The invention discloses a weather-proof transparent polyurethane with low surface energy and a preparation method thereof. The polyurethane coating comprises the following two components, (a) a fluorine-containing hydroxyl polyester which has a relative molecular weight range of 2000-4500 and a molecular weight distribution of 1.1-1.8; (b) a polyisocyanate component which is composed of one or more of hexamethylene diisocyanate biuret, hexamethylene diisocyanate tripolymer and isophorone diisocyanate tripolymer; and the molar ratio of reactive groups of the polyisocyanate to the fluorine-containing hydroxyl polyester is 1.2:1. According to the preparation method, the polyurethane has the advantages of high transmittance, yellowing resistance, good hydrophobicity and oleophobicity, and good mechanical property. The polyurethane can be widely applied to anti-corrosive and anti-fouling coatings, transparent plastic devices with low double refraction requirements and the field with higher weather-proof requirements, and has important development value and application value.

The invention relates to reinforcing liquid for paper cultural relic protection. The reinforcing liquid for the paper cultural relic protection is prepared from the following raw materials by weight percent: 30% to 75% of hexamethylene diisocyanate trimer, 0.5% to 4% of nano silica, 0.1% to 0.3% of dibutyltin dilaurate and 20.7% to 68.9% of N,N-dimethylformamide, the nano silica is dried to obtaindried nano silica; the hexamethylene diisocyanate trimer is added into the N,N-dimethylformamide, dissolved, and kept warm for 5 to 10 minutes to obtain a mixed solution; the dried nano silica is added into the mixed solution, and the dibutyltin dilaurate is added and heated to 70 DEG C. When an isocyanate group content is up to 15% to 50%, the reinforcing liquid of the invention is obtained; thereinforcing liquid for the paper cultural relic protection is scientific and reasonable in composition, rich in raw materials, easy to produce and prepare, and good in use effect. The reinforcing liquid for the paper cultural relic protection is innovation of the reinforcing liquid for the paper cultural relic protection, and has enormous economic and social benefits.

The invention relates to a closed isocyanate curing agent, a preparation method thereof and a single-component coating. The closed isocyanate curing agent is prepared from the following raw materials:a polyisocyanate trimer, a chain extender, a sealing agent and a cosolvent, wherein the polyisocyanate trimer is selected from at least one of an isophorone diisocyanate trimer, a hexamethylene diisocyanate trimer and a toluene diisocynate trimer, the chain extender is selected from at least one of a polyfunctional compound containing hydroxyl and / or amino and water, and the polyfunctional compound has 2-12 carbon atoms. The closed isocyanate curing agent has a cross-linked structure with multiple cross-linking sites, and a closed isocyanate curing agent trimer can be subjected to multi-sitecross-linking with amino resin, acrylic resin and the like in a varnish coating formula, so that the cross-linking density of a coating film can be improved.

A metal face coating for synthetic-resin curtain wall consists of A component and B component in proportion of 2-4:1. A component comprises organic solvent 3.0-22wt%, cellulose acetate butyrate 1.0-10wt%, dispersant 0.1-0.8wt%, fluorine resin 50-80wt%, fluorine-containing wax powder 0.1-2.0wt%, extinct powder 0.1-15wt%, anti-settling agent 0.1-2.0wt%, silver slurry or other pigment or their mixture 9-18wt%, leveling agent 0.1-0.8wt% and de-foaming agent 0.1-0.8wt%; B component comprises hexamethylene diisocyanate tri-polymer 30- 75wt% and diethyl ether acetic ether oxalate 25-65wt%. It has better cladding and covering rate, better weather-resisting stability, less consumption and VOC discharge.

The invention discloses a two-component waterborne polyurethane adhesive and a preparation method thereof, and relates to the technical field of adhesives. The two-component waterborne polyurethane adhesive comprises a component A and a component B; the component A is prepared from, by weight, 15 to 20 parts of castor oil, 15 to 20 parts of polycarbonate diol, 80 to 100 parts of poly(1, 4-butylene adipate) glycol, 6 to 10 parts of sodium N-(2-aminoethyl)-2-aminoethanesulfonate, 3 to 8 parts of trimethylolpropane, 20 to 30 parts of diisocyanate, 0.02 to 0.05 part of dibutyltin dilaurate and 2.5 to 4 parts of ethylenediamine; and the component B is a hexamethylene diisocyanate tripolymer. The preparation process is simple, and the prepared adhesive is excellent in comprehensive performance, good in hydrolysis resistance, high in peel strength and good in storage stability, has good bonding capacity for various shoe materials such as rubber shoes, sports shoes and leather shoes, and can meet the application requirements of the water-resistant adhesive for shoes in a high-humidity environment.

The invention provides a preparation method and application of a high-performance water-based polyurethane adhesive for synthetic leather. The preparation method comprises the following steps: addingthe following components in parts by weight into a reaction kettle: 18-22 parts of mixed polymer diol, 9-11 parts of isophorone diisocyanate and 1-3 parts of triethylamine; adding the following components in parts by weight after reaction: 1.3-1.6 parts of dimethylolpropionic acid, 0.4-0.6 part of 1,4-butanediol and 1-3 parts of triethylamine; adding 3-5 parts of diethanol amine and water after reaction, and stirring to obtain polyhydroxyl-terminated to serve as a component A; and taking hexamethylene diisocyanate (HDI) trimer as a component B. According to the preparation method, a stepwise polymerization method and polyhydroxyl termination technology are adopted to prepare the polyhydroxyl-terminated water-based polyurethane to serve as the component A, and the HDI trimer is used as thecomponent B to prepare a dual-component water-based polyurethane adhesive which can be used for preparing high-performance water-based synthetic leather.

The embodiment of the invention discloses a polyurethane gloss white finish for furniture, which comprises a main agent, a curing agent and a diluent, wherein the main agent comprises synthetic fatty acid resin, n-butyl acetate, a defoaming agent, a flatting agent and white paste; the white paste comprises synthetic fatty acid resin, n-butyl acetate, a dispersing agent, titanium dioxide, and nanometer silicon potassium aluminate powder; the curing agent comprises toluene diisocyanate trimer, hexamethylene diisocyanate trimer, and n-butyl acetate; the diluent comprises n-butyl acetate, dimethylbenzene and propylene glycol monomethyl ether acetate. According to the polyurethane gloss white finish for the furniture, the nanometer silicon potassium aluminate powder is utilized, so that the sand mark covering capability and the fullness of a finish film can be improved, and the aims of reducing dark bubbles and improving a flatting effect are achieved.

The invention belongs to the field of hydrogel, and discloses a hydrogel adhesive capable of being repeatedly used and not damaging the surface of a substrate, and a preparation method and applicationof the hydrogel adhesive. The hydrogel adhesive which can be repeatedly used and does not damage the surface of the base material is synthesized by monomer methyl methacrylate and acrylamide, and a cross-linking agent hexamethylene diisocyanate-trimer through free radical polymerization in water. According to the invention, the simple commercially available monomers which do not need chemical modification are used, and under the condition of not changing the composition, the self-repairing high-tensile and self-adhesive hydrogel is obtained by regulating the molecular chain length of the hydrogel polymer through changing the polymerization temperature. The self-healing property of the prepared hydrogel is important, and especially when the hydrogel is used for bearing application. The internal self-repairing ability of the hydrogel during damage will increase durability, the service life, reliability and safety of the hydrogel.