36results about How to "With self-emulsifying function" patented technology

The invention discloses a multifunctional organic silicon finishing agent and a preparation method thereof. The multifunctional organic silicon finishing agent comprises the following components in percentage by mass: anti-ultraviolet polyether organic silicon oil, isobutyl alcohol, composite emulsifier of phosphate betaine type gemini surfactant and fatty alcohol-polyoxyethylene ether in a ratio of 1:1, PH buffering agent and deionized water. The preparation method for the multifunctional organic silicon finishing agent comprises the following steps of: modifying organic silicon by adopting a special heterocyclic hindered ammonia compound, substituting the conventional amino, introducing a polyether functional unit on the main chain of the organic silicon, introducing the hindered ammonia compound on the branched chain, and synthesizing multifunctional organic silicon oil. The finishing agent keeps the original advantages of the amino silicon oil, and is particularly suitable for soft finishing and anti-ultraviolet finishing of bleached fabrics and light color fabrics; and the finishing agent can be prepared into silicon oil micro-emulsion of various proper concentrations by full emulsifying and has strong usability.

The invention discloses a styrene-acrylate aqueous dispersoid with an amphiphilic structure and a preparation method thereof. The preparation method comprises the following steps of: mixing 1-10 parts of reactive emulsifying agent, 14-38 parts of styrene, 12-32 parts of alpha-methyl styrene, 40-60 parts of acrylate monomer, 1-2 parts of initiator and 0-1 part of chain transfer agent, and preparing into a composition A; dissolving 0.2-0.5 part of initiator in 2-5 parts of solvent, and preparing into a composition B; adding 30-50 parts of solvent into a reaction kettle, rising the temperature to 80-100 DEG C, firstly adding 10-20 parts of composition A, reacting for 20-40 minutes, then dropping the remaining amount of the composition A, and then adding the composition B; and adding 13.5-20.2 parts of amine substances into the reaction kettle for carrying out neutralization, dispersing reaction products with water and obtaining the styrene-acrylate aqueous dispersoid. The styrene-acrylate aqueous dispersoid prepared by the invention has the characteristics of high solid content, low viscosity, fast drying, excellent storage stability and the like, the process is simple, and the safety and the energy conservation are achieved.

The invention belongs to the polymer chemistry field, in particular to a cross-linking self-emulsifying cationic perfluorocopolymer soap-free emulsion and a preparation method thereof. The soap-free emulsion overcomes the problems of the prior art such as poor film forming property, low conversion rate of fluoride monomer, and adverse impact on water resistance and oil resistance of fluorine-containing emulsion products and environmental protection. The technical proposal is as follows: the cross-linking self-emulsifying cationic perfluorocopolymer soap-free emulsion is prepared by the following method: (1) preparing a monomer pre-emulsion mixture: mixing a cationic monomer with vinyl monomer, perfluoroalkyl (methyl) acrylate and a functional monomer to obtain a mixture solution A; and then mixing the mixture solution A with an oil soluble initiator to obtain a mixture solution B, pre-emulsifying and evenly mixing the mixture solution B by ultrasonic agitation or mechanical agitation;(2) preparing a water soluble perfluoroalkyl acrylate prepolymer; and (3) preparing the perfluoroacrylate copolymer soap-free emulsion. The cross-linking self-emulsifying cationic perfluorocopolymer soap-free emulsion has the advantages of good stability, good film forming property of film coating, high conversion rate of the fluoride monomer, safety and environmental protection.

The invention discloses a preparation method for self-emulsified cationic epoxy emulsion. The method mainly comprises: using bisphenol A, dodecylphenol and ethoxylatedbisphenol A to perform chain extension on low-molecular-weight epoxy resin to obtain medium-molecular-weight chain-extended epoxy resin; using diethanolamine and N, N-dimethylpropylamine to perform ring-opening amination on chain-extended epoxy resin; and taking a totally-enclosed modified MDI as a curing agent, neutralizing with lactic acid, and emulsifying in deionized water to obtain the self-emulsified cationic epoxy emulsion. According to the epoxy emulsion, tertiary / quaternary amine cationic epoxy resin is taken as the resin main body, and the molecules of the tertiary / quaternary amine cationic epoxy resin have both hydrophobic carbon chains and hydrophilic cationic chain segments, so that the resin molecules have self-emulsifying function, and can be stably emulsified in water without the help of emulsifiers. The provided self-emulsified cationic epoxy emulsion is applicable to preparation of cathodic electrophoretic coatings which has excellent coating performance.