1079 results about "Resin modified" patented technology

The invention relates to an epoxy adhesive composition comprising a) a first epoxy resin, b) a second epoxy resin modified with an acrylonitrile-butadiene rubber, the latter comprising on average less than about 25 weight percent acrylonitrile, and c) a toughener. The total amount of component b) and component c) is higher than about 30 percent based on the total weight of the composition, and the weight ratio of component c) to component b) is greater than about 1:1. The invention further relates to the use of said epoxy adhesive composition for the assembly of parts of a vehicle. It also relates to a vehicle, parts of which are assembled by said epoxy adhesive composition.

A coating composition used for coating of a steel material and/or aluminum material comprises a corrosion inhibitor, a base resin and a curing agent. The corrosion inhibitor may be selected from cerium compounds, lanthanum compounds, molybdate salt compounds, gluconic acid derivative salts, porous base materials, triazole compounds, thiazole compounds, tetracyclines, and metal phosphate salt compounds of ascorbic acid. The base resin may include a xylene-formaldehyde-resin-modified amino-containing epoxy resins obtained by reacting an epoxy resin having an epoxy equivalent of from 180 to 2500 with a xylene formaldehyde resin and an amino-containing compound. The curing agent may be a blocked polyisocyanate compound obtained by blocking an isocyanate group of a polyisocyanate compound with a blocking agent.

The invention discloses a thick paste quick-drying type weather-resistant and wear-resistant coating for wind turbine blades and a preparation method thereof, the coating takes poly-asparaginic acid ester and elastic resin-modified aliphatic isocyanate as base materials, a nano-material is adopted for being effectively bonded with a resin matrix, and appropriate auxiliaries and additives for enhancing the performances of the coating. The thickness of a film which is formed by the coating for the wind turbine blades once can achieve 300 mu m; furthermore, the drying speed is fast and the coating is less prone to bubbling; the weather resistance is excellent, and the coating has higher tensile strength and elongation at break, and prominent wear resistance and impact resistance; the performances of water resistance, chemical product resistance, wet heat resistance, salt mist resistance and high and low temperature resistance are excellent; and the coating has certain anti-pollution and anti-icing properties. The construction efficiency of the coating is high, the performances of the coating are particularly suitable for wind field environments in China, the service life of a unit can be prolonged and the maintenance cost can be reduced.

An adhesive binder composition containing an isocyanate-functional resin modified with a protein, preferably with a source of soy protein, and the use of the binder for preparing wood composites, especially OSB.

The invention provides a waterborne epoxy modified emulsified asphalt concrete for a steel bridge surface and a preparation method thereof. The waterborne epoxy modified emulsified asphalt concrete for the steel bridge surface is prepared by the following steps of: adding waterborne epoxy resin, a curing agent, and a stabilizing agent into modified emulsified asphalt, continuously stirring until the mixture is uniform, and shearing to obtain waterborne epoxy resin modified emulsified asphalt emulsion; and stirring coarse aggregate and fine aggregate in a container, adding the waterborne epoxyresin modified emulsified asphalt and then stirring, adding a filler and then mixing and stirring, and adding cement and stirring to obtain the waterborne epoxy modified emulsified asphalt concrete. A paving material prepared by the method has the characteristics of environment-friendliness, low volatile organic compound (VOC), low energy consumption, high bonding strength with a steel plate, high cryogenic stabilization, excellent water stability performance, high tenacity, and high fatigue resistance performance.

The present invention discloses process of producing aromatic heterocycle and chlorated monomer modified polyaramide resin. Monomers including paraphthaloyl chloride and p-phenylene diamine in the calculated equivalents and 2-(4-aminophenyl)-5(6) aminophenyl benzimidazole in 20-80 % the calculated equivalent are synthesized inside NMP/CaCl2 solvent system into high molecular weight resin through one two-step process including the first reaction between partial paraphthaloyl chloride and all the p-phenylene diamine to form amido group terminated low molecular weight oligomer and the subsequent reaction between the rest paraphthaloyl chloride and the amido group terminated low molecular weight oligomer to form the high molecular weight resin. The aromatic heterocycle and chlorated monomer modified polyaramide resin has the advantages of high fireproof performance, high mechanical strength and low cost.

The invention designs an organic silicon modified polyurethane resin for synthetic leather and a preparation method thereof, relating to the processing field of synthetic leather. The invention solves the technical problems of poor anti-sticking performance, poor water resistance, poor wear resistance and the like of the existing synthetic leather. The resin provided by the invention is characterized by comprising the following raw materials in mass percent: 2-30% of diisocyanate, 5-40% of polyester or polyether polyol, 0.5-20% of terminal hydroxyl organic silicon, 0-10% of small molecular polyol chain extender, 0-13% of small molecular polyamine chain extender, 0.01-1% of catalyst and the balance of solvent, wherein the terminal hydroxyl organic silicon adopts a polyether-polysiloxane copolymer of which the two ends are hydroxyl groups, and the polyether chain segment is polyoxyethylene or polyoxypropylene. The glossiness and transparency of the polyurethane resin modified by the invention can not be influenced by organic silicon, and simultaneously, the anti-sticking performance, surface smoothness, wear resistance and water resistance of the modified polyurethane resin can be obviously improved.

The invention discloses a water-based ink for plastic printing and a preparation method thereof. The water-based ink is prepared by using epoxy resin modified water-based polyurethane emulsion and organic silicon modified styrene-acrylic emulsion as base materials and using deionized water and alcohol as solvents. The water-based ink comprises the following components by weight percent: 15-30% of epoxy resin modified water-based polyurethane emulsion, 20-35% of organic silicon modified styrene-acrylic emulsion, 10-20% of non-toxic organic pigment, 5-30% of deionized water, 5-20% of ethanol or isopropanol, 3-5% of triethylamine and 1.6-10% of additive. The water-based ink does not contain the volatile organic solvent, is incombustible, nonexplosible and non-toxic and has high attachment fastness on the plastic film and good printing effect; the ink has high chemical resistance, acid resistance and alkali resistance; and the ink has good water resistance, heat resistance, freezing resistance and oil resistance. The ink can be widely used in the packaging and printing of the industries such as grain, vegetables, alcohol and tobacco, and food; and the safety and non-toxicity of the ink can be ensured, and the ink is a green and environmentally-friendly product and has considerable market potential.

The invention provides a novel method for preparing a latent nonionic self-emulsifying epoxy curing agent. The method comprises the following steps of: reacting long alkyl chain fatty amine with diglycidyl ether to prepare an addition product of which the middle part is connected with a long hydrophobic side chain and two ends are provided with epoxy groups; and reacting polyamine with a carbonyl compound to prepare an imine compound which contains secondary amine, and sealing the end to prepare the latent nonionic self-emulsifying epoxy curing agent. Under water environment, the imine structure in the curing agent hydrolyzes hydrophilic amino, and the curing agent contains the long hydrophobic alkyl chain, so the curing agent has the functions of emulsifying and curing an epoxy resin. The curing agent can be used for water-based epoxy emulsion coatings, water-based epoxy resin modified emulsified asphalt and cement and the like, and has excellent adhesion performance of ketimine on a wet surface. Due to the introduction of hydrophobic chains, the stability of the imine curing agent is improved in the water environment, and the performance of the curing agent in the aspect of wet surface or underwater adhesion can also be improved.

The invention relates to an epoxy resin modified water-based polyurethane emulsion and a preparation method thereof. The emulsion comprises the following components in percentage by weight: 20 to 40 percent of isophorone diisocyanate, 20 to 40 percent of polyester, 5 to 10 percent of hydrophilic chain extender, 2 to 10 percent of chain extender, 1 to 3 percent of crosslinker, 3 to 10 percent of neutralizing agent, 2 to 10 percent of epoxy resin and 10 to 20 percent of acetone. The preparation method comprises the steps of feed preparation, polyester dehydration, the synthesis and neutralization of prepolymer, and chain extension and emulsification. Compared with the prior art, the epoxy resin modified water-based polyurethane emulsion has the advantages of high hardness of film, good water resistance and solvent resistance and the like, and is widely applied in the field of packaging coatings.

An adhesive binder composition containing a urea-formaldehyde resin modified with a protein, preferably with a source of soy protein and the use of the binder for preparing wood composites, especially particleboard.

The present invention relates to one kind of epoxy resin modified heat resistant anticorrosive organosilicon paint, which consists of two components, including one component A comprising epoxy resin modified organosilicon 30-40 wt%, pigment, stuffing and assistant 20-35 wt%, and solvent 25-50 wt%; and one component B of liquid polyamide resin in the amount of 7-20 wt% of the component A. Of the paint, the epoxy resin modified organosilicon is prepared with organosilicon pre-polymer and through modification with epoxy resin. The heating cured coating formed with the paint has excellent performances, including high structural stability, high heat resistance, high water tolerance, high organic solvent tolerance, high acid and alkali resistance, high weather resistance, etc. and is suitable for industrial application.

The invention discloses a ternary alloy hyperacoustic motor frictional material of the fire resistance resin modified polyphenyl ester, which solves the low friction coefficient problem, the low impact strength problem, the low abradability problem and the bad processability problem of the prior hyperacoustic motor. The invention is made by 5-25% politef, 5-20% fire resistant resin and the rest polyphenyl, which can also add one or a plurality of 10-35% fortifying fiber, 1-15% metal powder and 1-15% ceramic powder. The invention keeps all the advantages of the present polyphenyl ester plastic alloy hyperacoustic motor frictional material, which is provided with the high friction coefficient, the good abradability, the low noise, the high hardness and the high impact strength.

The specification discloses a binder composition comprising a urea formaldehyde resin modified with a water soluble non-ionic amine oxide and optionally further modified with an anionic acrylic latex and/or a water soluble polymer comprising 40-100% by weight, based on polymer weight, of a polymerized ethylenically unsaturated carboxylic acid monomer, the polymer having a weight average molecular weight from 100,000 to 2,000,000. Glass fiber mats bonded with the binder composition as well as roofing products, e.g., shingles, prepared from the glass mats bonded with the binder composition of this invention are also disclosed. The binder composition containing the amine oxide provides superior tear strength to glass fiber mats and with the use of the latex and/or water soluble polymer an improved tensile strength of the mats, as well as to asphalt roofing and other products made therefrom while maintaining the high tear strength. The specification also discloses processes for making: the binder; the bonded glass fiber mats; and the roofing products. The disclosure also provides a process for choosing a glass fiber mat or a specific formulation of the binder for use with each other which provides a desirable tensile and tear strength to the mat.

The invention discloses a high-bonding-strength and high-temperature-resisting phenolic resin modified polyurethane adhesive and a preparation method thereof. The preparation method comprises the following steps of: synthesizing modified phenolic resin, preparing polyurethane prepolymer, synthesizing modified polyurethane prepolymer, and synthesizing the modified polyurethane adhesive, wherein the step of synthesizing the modified phenolic resin is carried out by adding methoxyl dimethylbenzene monomer and phenols in phenolic resin to react under the effect of an acid catalyst, cooling the mixture, and then adding a basic catalyst, solvent and formaldehyde in the mixture for dehydration reaction under vacuum until the mixture is transparent, thus obtaining the modified phenolic resin; the step of preparing the polyurethane prepolymer is carried out by adding polyisocyanates and polyester polyol in the modified phenolic resin for reacting; the step of synthesizing the modified polyurethane prepolymer is carried out by modifying the polyurethane prepolymer through the modified phenolic resin to obtain the modified polyurethane prepolymer; and the step of synthesizing the modified polyurethane adhesive is carried out by adding water to the modified polyurethane prepolymer, and dispersing the modified polyurethane prepolymer through dispersing agent, and finally adding neutralizing agent, cross-linking agent and chain extender into the dispersed modified polyurethane prepolymer to obtain the modified aqueous polyurethane adhesive. The preparation method disclosed by the invention is simple, and improves the bonding strength and high temperature resistance of the polyurethane adhesive.

Modified epoxy resins comprising the reaction product of a cycloaliphatic, polycyclic and/or aromatic biomass derived compound and an epoxy resin are disclosed. Aqueous dispersions and coatings comprising these reaction products are also disclosed.

The invention discloses a room temperature curing high-temperature-resistant high-tenacity epoxy adhesive and a preparation method thereof. The room temperature curing high-temperature-resistant high-tenacity epoxy adhesive is prepared from raw materials comprising a component A and a component B based on weight percent, wherein the component A comprises the following raw materials in weight percent: epoxy resin, a flexibilizer, a thinner, a coupling agent, fumed silica, a packing and a defoaming agent; the component B comprises the following raw materials in weight percent: alicyclic amine, polyamide, modified fatty amine, a coupling agent, fumed silica, a packing and a defoaming agent; the flexibilizer in the component A adopts epoxy resin modified by nanometer core-shell particles. According to the room temperature curing high-temperature-resistant high-tenacity epoxy adhesive disclosed by the invention, the excellent tenacity is achieved by using the common epoxy resin, the epoxy flexibilizer modified by the nanometer core-shell particles and the polyamide curing agent; the epoxy resin is cheap in price, accessible and capable of retaining higher shear strength at the high temperature; when alicyclic amine and modified fatty amine are selected and used as curing agents, the Tg can be higher, and the shear strength at the high temperature can be kept excellent.

A composition useful as a wire or cable insulation or sheathing layer, the composition comprising (i) an inorganic flame retardant, e.g., aluminum trihydroxide (ATH), (ii) ethylene ethyl acetate (EEA) or ethylene butyl acrylate (EBA), (iii) a homogeneous polyethylene, (iv) an ethylenic resin modified with an organo-functional group, e.g., maleic anhydride (MAH) grafted polyethylene, (v) a silicone polymer, and optionally, (vi) a smoke suppressant. The insulation or sheathing layer comprising the composition of this invention exhibits good resistance to stress and/or thermal cracking.

The invention discloses an acrylate solvent-based pressure sensitive adhersive. The acrylate solvent-based pressure sensitive adhersive comprises, by weight, 100 parts of a tackifying resin modified acrylate prepolymer, 0.5-3 parts of a catalyst and 0.1-2 parts of a cross linking agent. The invention further discloses adhesive products prepared from the acrylate solvent-based pressure sensitive adhersive. The acrylate solvent-based pressure sensitive adhersive is characterized by: adopting the tackifying resin modified acrylate prepolymer as a main component, adding proper catalyst and proper cross linking agent according to different use requirements before being coated to adjust performance of the adhersive so as to satisfy performance requirements of a plurality of products, optimize product structures, raise production efficiency and facilitate product development and product transformation.

The present invention relates to an epoxy adhesive composition comprising

• a) a first epoxy resin,
• b) a second epoxy resin modified with a copolymer based on a 1,3-diene and a polar, ethylenically unsaturated comonomer,
• c) a toughener and
• d) a polymer comprising a polyester segment, said polymer being at least partially crystalline at room temperature and having a softening temperature in the range of 40° to 125° C.

The invention further relates to the use of such an epoxy adhesive composition for bonding parts of a vehicle without prehardening of the epoxy adhesive composition and to a vehicle, parts of which are bonded by the epoxy adhesive composition.

The invention relates to a modified cured rubber compound which comprises (i) the rubber components of natural rubber or synthetic rubber, (ii) methano donator, (iii) aralkyl substituted phenol resin as the methano acceptor, wherein the aralkyl substituted phenol (resorcin) methano donator resin can be prepared by reacting the substituted or non-substituted phenol compound, vinyl aromatic compound and aldehyde and/or ketone in the presence of organic metal phosphate or phosphite ester catalyst. The inventive methano acceptor has lower smoke degree than R-80 (resorcin-80). And in the tension strength and dynamic mechanical property test, the aralkyl substituted resorcin phenol resin has better performance than R-80 and resorcin-formaldehyde (RF) resin.

Disclosed is a resin composition for a PCB, the composition including: (a) a polyphenylene ether resin modified via a redistribution reaction of polyphenylene ether in the presence of 9,9-bis(hydroxyaryl)fluorene or 9,10-dihydro-9-oxa-10-(dihydroxyaryl)-10-phosphaphenanthrene 10-oxide; (b) a dicyclopentadiene epoxy resin represented by Formula 1; and (c) an alkylphenol aldehyde novolak curing agent represented by Formula 2, wherein, when the polyphenylene ether resin is modified via a redistribution reaction of the polyphenylene ether in the presence of 9,9-bis(hydroxyaryl)fluorene, the composition further includes (d) a brominated epoxy resin. Also, a composite substrate and a copper laminate using the same are disclosed.

Disclosed is a resin composition for a PCB, the composition including: (a) a polyphenylene ether resin modified via a redistribution reaction of polyphenylene ether in the presence of 9,9-bis(hydroxyaryl)fluorene or 9,10-dihydro-9-oxa-10-(dihydroxyaryl)-10-phosphaphenanthrene 10-oxide; (b) a polymer binder; and (c) cyanate ester or a prepolymer of the cyanate ester, wherein, when the polyphenylene ether resin is modified via a redistribution reaction of the polyphenylene ether in the presence of 9,9-bis(hydroxyaryl)fluorene, the composition further includes (d) a flame retardant. Also, a composite substrate and a copper laminate using the same are disclosed.

The present invention provides a preparation method of modified urea formaldehyde resin powder material. The method firstly mixes the product obtained in the reaction between formaldehyde and urea and the urea formaldehyde resin modified agent, and then powderizes the liquid of modified urea formaldehyde resin; wherein, the urea formaldehyde resin modified agent should be added at least for two times. The content of dissociating formaldehyde of the urea formaldehyde resin obtained from the preparation method of modified urea formaldehyde resin provided by the present invention is quite low, thus greatly reducing the formaldehyde burst size of artificial board products in timber manufacturing process. For example, the content of dissociating formaldehyde of the modified urea formaldehyde resin provided by the present invention can be reduced to no more than 0.20 percent, so the veneer prepared by the modified urea formaldehyde resin can meet E1(is less than or equal to 1.5mg/L) stipulated in the international standard. In addition, the modified urea formaldehyde resin powder material provided by the present invention is powder, which is conducive to storage and transport.