562 results about "Glycidyl ethers" patented technology

Disclosed are Bisphenol A (BPA), Bisphenol F, Bisphenol A diglycidyl ether (BADGE), and Bisphenol F diglycidyl ether (BFDGE)-free coating compositions for metal substrates including an under-coat composition containing a polyester (co)polymer, and an under-coat cross-linker; and an over-coat composition containing a poly(vinyl chloride) (co)polymer dispersed in a substantially nonaqueous carrier liquid, an over-coat cross-linker, and a functional (meth)acrylic (co)polymer. Also provided is a method of coating a metal substrate using the BPA, BPF, BADGE and BFDGE-free coating system to produce a hardened protective coating useful in fabricating metal storage containers. The coated substrate is particularly useful in fabricating multi-part foodstuffs storage containers with “easy-open” end closures.

The invention relates to organic-inorganic hybrid ultraviolet cured paint for metal surface protection. The paint comprises the following components in percentage by weight: 10 to 25 percent of epoxy modified silicon dioxide gel-resin, 15 to 30 percent of bisphenol-A epoxy acrylic ester, 5 to 15 percent of urethane acrylate, 35 to 45 percent of reactive diluent, 2 to 5 percent of toughener, 4 to 6 percent of photoinitiator, 0.5 to 0 percent of addition agent, wherein the epoxy modified silicon dioxide gel-resin is prepared by hydrolyzing a mixture of ethyl orthosilicate and gamma-glycidoxy propyl trimethoxy silane by a sol-gel method first and then adding diethylenetriamine. The paint film formed after the curing of paint has good strength, hardness, flexibility and strong acid and base resistance. The invention solves the problems that the organic-inorganic hybrid paint has high requirement on curing and common ultraviolet cured paint has poor adhesive force and flexibility when cured on metal base materials.

The invention belongs to the field of chemical coatings, and specifically relates to a VOC (Volatile Organic Compounds)-free water-based epoxy curing agent. The curing agent comprises the following components in percentage by weight: 12-25% of epoxy resin, 15-30% of terminal epoxy glycidyl ether, 3-11% of polyether amine, 18-35% of an amine compound and 40-60% of deionized water. The preparation method of the curing agent comprises the following steps: preparation of an intermediate, epoxy-amine addition and dispersion by using deionized water. The preparation method of the curing agent is simple, the reaction process is easy to control, no organic solvent is used in the preparation process and the storage stability of the curing agent is good. A water-based epoxy zinc-enriched primer which is made of the curing agent has the characteristics of high drying speed, low applicable temperature, good film flexibility, high hardness, excellent corrosion resistance and the like, and can be applied to the fields such as ocean engineering, bridges, grade levels, high-speed rail facilities, wind power equipment, petrochemical engineering and heavy machinery.

The present invention relates to an epoxy resin composition for fiber reinforced composite material comprising the following components (1)-(3) as essential components, their mixing ratios meeting the following conditions (I)-(IV), and component (3) being dissolved homogeneously: component (1): epoxy resin that is liquid at room temperature, component (2): aromatic polyamine that is liquid at room temperature, component (3): diaminodiphenylsulfone, condition (I): The proportion of component (1) relative to the entire epoxy resin in the composition is 60-100 wt %, condition (II): The sum of the proportions of components (2) and (3) relative to the entire polyamine in the composition is 70-100 wt %, condition (III): The proportion of component (3) relative to the entire polyamine in the composition is 25-60 wt %, and condition (IV): The stoichiometric ratio of the entire polyamine to the entire epoxy resin in the composition is 0.7-1.3. Another embodiment of the invention relates to an epoxy resin composition for fiber reinforced composite material that contains at least the following components (4)-(6), forms a cured product with a theoretical molecular weight between crosslinking points in the range of 250-350 g/mol, and has an initial viscosity at 80° C. of 1-500 MPa.s: (4): aromatic epoxy resin with tri- or higher functionality, (5): aromatic epoxy resin with di- or higher and lower than tri-functionality, and (6): aromatic polyamine, the molecular weight between crosslinking points being defined as the weight of the entire cured epoxy resin divided by the number of crosslinking points contained in the entire cured epoxy resin. The invention also relates to an epoxy resin composition for fiber reinforced composite material that consists of the following components (7) and (8): (7) a polyglycidyl ether of phenol aralkyl resin as represented by the following formula: where R<1>, R<2>, R<3 >and R<4>denote a hydrogen atom, an alkyl group having 1-8 carbon atoms, or a halogen atom, and m and n denote an integer of 1-4 and a real number of 0 or more and less than 1, respectively, and (8) polyamine. With the constitution described above, the present invention can provide a liquid epoxy resin composition for low cost production of high performance fiber reinforced composite material, that has a low viscosity at relatively low temperatures, and that after being cured, the cured product is high in glass transition temperature, elastic modulus and toughness while being small in the glass temperature decrease caused by water absorption and also small in the coefficient of linear expansion; and can provide a method to produce fiber reinforced composite material therefrom. Fiber reinforced composite material produced according to the present invention can serve as material for parts of aircraft, including main wing, tail, rotor blade, fairing, cowl, and door; parts of spacecraft, including motor case and main wing; and parts of space satellite body structure. They can also be used preferably as material for automobile chassis and railroad vehicle body structure.

The invention relates to a cross bonding sodium hyaluronate gel for injection and a preparation method thereof. The method is characterized in that sodium hyaluronate and glycidyl ether are mixed and react in alkaline solution to form water-insoluble gel, the gel is purified in deionized water and broken into particles of certain sizes; ionic strength of the deionized water is improved to contract the gel particles. The cross bonding sodium hyaluronate gel features asepsis, apyrogeneity and small and uniform particles; therefore the gel can be applied to prepare injection for beauty care and medical treatment.

The invention provides a two-component epoxy decorating sealant, comprising component A and component B. The component A comprises, by weight: 70-90 parts of first epoxy resin, 0-7 parts of glycidyl ether type diluent, 1-5 parts of a coupling agent, 3-7 parts of a first thixotropic agent, 0.1-0.3 part of a yellowing aid, and 0.1-0.3 part of a defoaming agent; the component B comprises 20-25 parts of an alicyclic curing agent, 20-30 parts of second epoxy resin, 25-30 parts of benzyl alcohol diluent, 3-6 parts of an accelerant, 3-7 parts of a second thixotropic agent, and 5-10 parts of a pigment. After being constructed and cured, the two-component epoxy decorating sealant attaches tightly to ceramic tiles, and water and dust never enter a gap to cause mold or leakage. In addition, colloid of the decorating sealant of the invention never flows or sags during construction, construction is facilitated, and construction efficiency is improved. The invention also provides a preparation method of the two-component epoxy decorating sealant.

This invention relates to a vacuum isolation sub-coating and its process to improve the surface flashover voltage, wherein, the coating is composed of epoxide resin, aluminum hydroxide, modified synthesized amine firming agent, butyl epihydrin aether thinner. The process comprises the steps of materials, bacon, vacuum, mixture, heating and solidifying and cooling and demoulding Comparing with current material, the coating in this invention has higher surface flashover voltage and high flash burn endurance.

The invention provides a two-component urethane resin adhesive for a polymer lithium ion battery flexible package film, and aims to provide an adhesive which has the advantages of high bonding strength, stripping resistance, excellent barrier property, impact resistance, high bonding compatibility with a nonmetallic film or an aluminum foil, resistance to swelling, dissolving, permeation and absorption of electrolyte organic solvents and high-volatility substances, resistance to strong acid and strong alkali and difficulty in breaking a molecular chain after becoming dry and hard. The two-component urethane resin adhesive consists of components, wherein a first component (A) is an emulsion waterborne Poly Urethane (PU) performed polymer which is obtained by compounding polyester and isocyanate/benzene ring-containing polyether in the mass ratio 75/25-55/45 and adding an aid for reacting; a second component (B) is a composition consisting of glycidyl ether epoxy resin with the epoxy resin 0.25-0.45 and a melamine-formaldehyde resin additional crosslinking agent; the weight ratio of the first component to the second component is 10/1-10/2; and a certain amount of additional crosslinking agent is added into a PU emulsion in a certain mass ratio.

The invention relates to a preparation method of a hyperbranched polyetheramine-grafted GO adsorbent used for heavy metal and dye adsorption as well as an application thereof. The hyperbranched polyetheramine-grafted GO adsorbent is characterized in that polyether diglycidyl ether and a polyamine monomer are employed to prepare the hyperbranched polyetheramine HPEA, an alkalescence catalyst grafting oxidation graphene GO is used, so that the hyperbranched polyetheramine-grafted oxidized graphene GO-HPEA. The adsorbent preparation method is simple and easy, the adsorption quantity for the heavy metal ion or cation dye can be more than 500mg/g, and the hyperbranched polyetheramine-grafted GO adsorbent has the advantages of easy solid-liquid separation and repeatable utilization, and can be used for high efficiency treatment of heavy metal and dye in waste water.

The invention belongs to the technical field of adhesives, and in particular relates to a low-stress transparent epoxy resin adhesive capable of curing fast at room temperature. The low-stress transparent epoxy resin adhesive is prepared by mixing an epoxy resin component A and a curing agent component B at the volume ratio of 1:1, wherein the epoxy resin component A comprises hydrogenated bisphenol A epoxy resin, bisphenol A glycidyl ether epoxy resin, functional acrylate monomer, an acrylate diluent, a tackifying accelerator and a silane coupling agent; the curing agent component B comprises polymercaptan, a tertiary amine accelerator, a vulcanizing accelerator, a stabilizer, a curing accelerator I and a curing accelerator II. While keeping 5-minute fast curing, high transparency and better bonding strength, the adhesive prepared by the invention has low exothermal temperature and small stress during curing, achieves better applicability in assembly of electronic devices, and has excellent electric insulativity, voltage breakdown resistance, shock resistance and aging resistance, and the application range of mercaptan-epoxy resin type adhesives in manufacturing of electronic devices is greatly expanded.

The invention relates to the technical field of high polymer material and particularly relates to a preparation method of a super-hydrophobic fiber. The preparation method of the super-hydrophobic fiber provided by the invention comprises the following steps: (a) constructing a nano-micro structure, namely coating the surface of polymeric fiber with a coating, thereby obtaining the polymeric fiber with surface subjected to functionalization, wherein the coating is dopamine, gamma-glycidyl ether oxygen propyl trimethoxy silane, tetraethoxy-silicane or aminopropyl triethoxysilane; and (b) performing surface modification, namely modifying the polymeric fiber with surface subjected to functionalization by use of a material with low surface energy, thereby obtaining the super-hydrophobic polymeric fiber, wherein the material with low surface energy is alkyltrichlorosilane or hexamethyl bisilazane. A contact angle between a fiber membrane manufactured by the fiber prepared by the method and water can be 168 degrees, the rolling angles of water drops on the fiber membrane are 4.5 degrees, and the fiber membrane has excellent affinity with ordinary organic solvents such as hexane and gasoline.

The present invention relates to a surfactant mixture comprising at least one surfactant of the general formula (I)

R¹O—(CH₂CH(CH₂OR²)O)_p-(D)_n-(B)_m-(A)_l-(X)_k—Y⁻1/bM^b+  (I)

where R¹, R², p, D, n, B, m, A, l, X, k, Y⁻, b, M^b+ are each as defined in the claims and the description. The invention further relates to processes for mineral oil production by means of Winsor type III microemulsion flooding using a surfactant formulation comprising the surfactant mixture.

The invention discloses a low temperature cured solvent-free epoxy anticorrosion paint and its preparation method. The low temperature cured solvent-free epoxy anticorrosion paint comprises a component A and a component B with weight ratio of 100:12.90-24.12, wherein, the component A comprises the following ingredients by weight percentage: 26.75-50.0% of bisphenol A modified epoxy resin, 6.71-18% of auxiliary agent and 43.29-55.75% of inorganic pigments and fillers. The auxiliary agent comprises nitrile rubber modified epoxy resin, benzyl glycidyl ether, modified polyacrylate, fluorocarbon modified polyacrylate, polymethyl alkyl siloxane, an ester coupling agent and gas phase silica; the inorganic pigments and fillers comprise carbon black, zinc phosphate, aluminium triphosphate, mica powder, titanium dioxide, talcum powder and ferrotitanium powder; the component B is modified aliphatic amine. The solvent-free epoxy anticorrosion paint of the invention can be rapidly cured at the low temperature of 4 DEG C in winter, and the method of the invention has the advantages of simple and convenient construction, no special device requirement, energy saving and low cost.

The object of the present invention is to provide a cation-polymerizable adhesive which can maintain the excellent normal state adhesion strength and can not be affected by the heat and light, and to provide a polaroid sheet formed via adhering a polarizer and a protection film by the adhesive. The invention relates to the cation-polymerizable adhesive, charaterized in that, the adhesive contains heterocyclic butane compound (A) which has more than two oxygen heterocyclic butyls and molecular weights of 100 - 800, aromatic glycidyl ether (B) and cation-polymerizabl initiator (C), the chlorine remained in the total amount of the adhesive is below 1500 ppm. The invention also relates to the polaroid sheet formed via adhering the polarizer and the protection film by the adhesive.

The invention provides a 3D network organic-inorganic hybrid all-solid-state electrolyte. The 3D network organic-inorganic hybrid all-solid-state electrolyte comprises a three-dimensional network polymer electrolyte matrix, oxide electrolyte nanoparticles or oxide electrolyte nanoparticle aggregation substance and a lithium salt, wherein the three-dimensional network polymer electrolyte matrix isused as a 3D network organic-inorganic hybrid all-solid-state electrolyte framework, the oxide electrolyte nanoparticles or the oxide electrolyte nanoparticle aggregation substance and the lithium salt are dispersed in the three-dimensional network polymer electrolyte matrix, and the three-dimensional network polymer electrolyte matrix is obtained by ring-opening polymerization of a reaction monometer with epoxy group, glycidyl ether-type epoxy resin, a derivative of the glycidyl ether-type epoxy resin, a cross-linking agent and a linear polymer.

The invention discloses an adhesive glue specially used for wood plywood, which is mainly made of the following raw materials: mung bean starch, bisphenol A epoxy resin, modifier, urea, formaldehyde, melamine rubber powder, lignin, biological enzyme, Potassium hydrogen sulfate, polyglycidyl ether, chitosan, polyvinyl alcohol and sodium hexametaphosphate. The adhesive glue special for wood plywood of the present invention has the advantages of strong adhesion, good modeling and dispersibility, and reduces the consumption of formaldehyde, and the free formaldehyde emission of the synthesized adhesive glue product reaches the EO level standard (≤ 0.5mg/L), reducing the emission of formaldehyde, no harm to the human body, belongs to the green environmental protection adhesive. High bonding strength and strong water resistance. The method for preparing the adhesive is simple, does not require very high equipment, and reduces production costs.

The invention relates to self-lubricating polyimide wire enamel and a preparation method thereof. The self-lubricating polyimide wire enamel comprises a component A and a component B, wherein the component A is a polyamide acid solution and accounts for 90 wt% to 98 wt% of the total mass of an enamel solution; and the component B is a blend of stearic acid, glycidyl ether propyl trimethoxy silane and tung oil anhydride, of which the mass ratio is 1: (1-3): (0.1- 0.8), and accounts for 2 wt% to 10 wt% of the total mass of the enamel solution. The self-lubricating polyimide wire enamel is obtained only by mixing the component A with the component B at room temperature. The preparation method has the advantages that raw materials are easy to obtain, the operation is simple, the preparation can be completed on general equipment and the industrialization is easy to realize; and a wire enamel film is smooth, even and flexible, is suitable for manufacturing electromagnetic wires of wire rods such as round copper wires, flat copper wires and aluminum wires and has a broad market prospect.

Provided are curable film-forming compositions are provided including:

• • (a) a binder of an alkoxysilane;
  • (b) a metal oxide compound containing titanium, zirconium, cerium, niobium, tantalum, and/or tin; and
  • (c) a polyglycidyl ether. Also provided are optical articles including a substrate and the curable film-forming composition superposed on a surface thereof.