10 results about "Aminosilochrome" patented technology

An aqueous coating composition comprising an aminosiloxane ester copolymer, an acrylic or polyurethane polymer, a surfactant, and water. The aqueous coating composition can be prepared by mixing an aqueous emulsion comprising an aminosiloxane copolymer, a surfactant, and water with an aqueous organic binder or dispersion. The aqueous coating composition can be used for leather treatment. The aqueous coating composition can be applied to a leather substrate and dried to remove water, thereby providing a coating on the leather substrate having a low coefficient of friction.

The invention discloses a preparation method and application of a nano manganese oxide compound, and the preparation method comprises the following steps: dissolving an amino siloxane compound in water containing dissolved oxygen to obtain 8lt; an aqueous solution of an aminosiloxane compound having a pH < = 12; adding a Mn < 2 + > solution into the amino siloxane compound aqueous solution, and reacting at room temperature; and after the reaction is performed for preset time, adding acid to terminate the reaction to obtain a nano manganese oxide dispersion liquid, and centrifugally washing to obtain the nano manganese oxide. The preparation method is mild in reaction condition, the nano manganese oxide can be rapidly prepared, the obtained nano manganese oxide has oxidase-like catalytic activity, and a nitrite detection system constructed based on the nano manganese oxide has the characteristics of low detection limit, high sensitivity, strong anti-interference performance, good selectivity and the like.

The invention provides an epoxy curing agent as well as a preparation method and application thereof. The preparation method of the epoxy curing agent comprises the following steps: carrying out first reaction on a first mixed reaction system containing amino siloxane and a chain extender to obtain an intermediate product of which the main chain contains a-Si-O-Si-bond and the side chain contains amino; performing a second reaction on a second mixed reaction system containing the intermediate product and a cross-linking agent to obtain the epoxy curing agent, wherein the cross-linking agent comprises an acid cross-linking agent. A coating film formed by the epoxy resin coating containing the epoxy curing agent has excellent high temperature resistance and good flexibility.

A waterborne coating composition comprising an aminosiloxane copolymer, a polyurethane polymer, a surfactant, and water. The waterborne coating composition can be prepared by mixing an aqueous emulsion comprising the aminosiloxane copolymer, surfactant, and water with an aqueous polyurethane emulsion or dispersion. The waterborne coating composition can be used for leather treatment. The waterborne coating composition can be combined with a crosslinking agent, applied to a leather substrate, and dried to remove water, thereby providing a coating with a low coefficient of friction on the leather substrate.

This invention discloses a method for preparing a yellowing-resistant modified amine epoxy curing agent and its application, belonging to the technical field of epoxy curing agents. The yellowing-resistant modified amine epoxy curing agent, by weight, comprises the following components: 70-100 parts of an aminosiloxane-terminated diimine pyrrolidone compound and 5-10 parts of fumed silica; the aminosiloxane-terminated diimine pyrrolidone compound is formed by bonding an aldehyde pyrrolidone compound and 1,3-bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane. This invention integrates the amino group (serving as the curing active center), the siloxane group (serving as a flexible regulating segment and weather-resistant barrier), the cyclic amide group (serving as a rigid reinforcing unit), and the imine bond into a single molecule through chemical bonds, avoiding compatibility problems that may arise from physical blending, and providing an epoxy resin curing agent with good yellowing resistance, good mechanical properties, and high curing efficiency.

The invention relates to the technical field of water-based cleaning agents, in particular to a water-based cleaning agent and a preparation method and application thereof.According to the water-based cleaning agent, amphiphilic molecules are formed through chemical grafting of beta-cyclodextrin-PEO derivatives and siloxane and serve as core components, and a bio-based solubilizer and a corrosion inhibitor are supplemented; the preparation method comprises the following steps: firstly, preparing a cyclodextrin-PEO derivative through ring opening polymerization of ethylene oxide; then carrying out amidation reaction with amino siloxane to construct a grafted structure; according to the invention, a cyclodextrin cavity provides molecular recognition inclusion ability, a siloxane chain segment enhances interfacial permeability, and the cyclodextrin cavity and the siloxane chain segment cooperate with each other to realize efficient decontamination; the bio-based component ensures environmental friendliness, and practical application verifies that the cleaning agent is particularly suitable for precise cleaning in high-end fields such as semiconductor manufacturing and aerospace.

The present discloses a prepolymer, a resin composition including the same, and article made therefrom, where the prepolymer is obtained from a mixture through a prepolymerization reaction. The mixture includes: (a) a maleimide resin, (b) an epoxy-modified cyclic siloxane, (c) an active hydrogen-containing compound. The active hydrogen-containing compound includes an aminosiloxane, a diallyl bisphenol, or a combination thereof. The prepolymer and the resin composition including the same of the present disclosure may significantly improve one or more of uniformity of an X-CTE of the article, copper foil peeling strength after copper plating, dimension stability after solder floating, and heterogeneous resin flow length.

The invention discloses multifunctional rubber as well as a preparation method and application thereof. The molecular chain of the multifunctional rubber is provided with at least one functional group of hydroxyl, carboxyl, ester group, amino, siloxane, halogen atom, phenolic hydroxyl group, sulfonic acid group, aldehyde group, thiazole, imidazole and pyridine; the total number of the functional groups accounts for 0.01-10% of the molar ratio of unsaturated double bonds in the rubber. By selecting a specific sulfydryl reagent chemical structure and a compounding type and controlling a feeding ratio and reaction conditions, coupling termination among carbon free radicals in a reaction process is successfully reduced, and functional groups are introduced to a rubber molecular chain while gel is reduced. According to the method, side reactions are reduced, the grafting amount is increased, and functional groups are more uniformly distributed in the rubber.

The invention discloses a preparation method of a fluorine-containing polyurea material with high hydrophobicity and corrosion resistance. An amino-terminated fluorine-containing polymer is used as a raw material and is subjected to a copolymerization reaction with an amino-containing oligomer, an amine compound and an isocyanate compound. Or an amino siloxane oligomer and an amino silane compound can be introduced, and then the amino siloxane oligomer and the amino silane compound react with the amino group-containing oligomer and other components. The process is simple and convenient, conditions are mild and efficient, the fluorine content of the fracture surface of the product reaches 25% or above, the fluorine content of the surface is higher than 50%, and due to introduction of fluorine-containing groups, the hydrophobicity and corrosion resistance of the material are remarkably improved on the basis that the original mechanical property of polyurea is reserved. The requirements for long-term reliability and extreme protection performance under extreme working conditions are met, the construction limitation caused by rapid curing of a traditional polyurea material is broken through, and dual optimization of material performance and process feasibility is achieved. The composite material is widely applied to the fields of ocean engineering facility protection, chemical equipment protection, electronic and electric appliance packaging, aerospace parts and the like.

A method that brings an aqueous solution containing an aminosilanol compound represented by general formula (1)         R1R2N-R3-SiR4m(OH)3-m     (1) (R1 and R2 represent a hydrogen atom, a C1-20 monovalent hydrocarbon group, etc., R3 represents a C1-20 divalent hydrocarbon group, R4 represents a C1-20 monovalent hydrocarbon group, and m represents an integer of 0-2.) and a condensate thereof into contact with an acidic cation exchange resin and produces an aqueous solution of a purified aminosilanol compound and aminosiloxane compound that removes metal components in the aqueous solution, the concentration of aminosilanol compound and aminosiloxane compound in the aqueous solution brought into contact with the acidic cation exchange resin being 10-70 mass%, gives an aqueous solution of a purified aminosilanol compound and aminosiloxane compound in which metal impurities contained therein are efficiently decreased.