Acryloxyalkoxysilicane modified acrylic acid ester polymerization emulsion and its preparation method and application

Abstract

Disclosed are an acrylate emulsion modified by one or more acryloxyalkoxysilanes with a controllable latex particle shape, and a preparation method and application thereof. The emulsion of the present invention is obtained by the emulsion copolymerization of (meth)acryloyloxyalkoxysilane and acrylic acid hydrocarbyl ester, and it is not necessary to use methacrylate monomers with high volatility and toxicity, styrene and unsaturated acids. other types of unsaturated monomers. Using the relationship of the reactivity ratio in the reaction kinetics, by controlling the entry of the reaction raw materials, copolymers with different latex particle morphological structures can be obtained through emulsion polymerization. The copolymerization method is simple in operation, low in cost and environmentally friendly. The polymer product thus obtained has significantly improved certain mechanical properties. The emulsions can be used in buffer coatings, adhesives, sealants, gaskets, inks, and cleaning agents. The sealant made with this emulsion has good stability and can be placed stably for more than one year at room temperature. It can be widely used in sealing, coating and bonding of automobiles, building materials, daily products, etc.

Description

Technical field [0001] The invention relates to one or more acryloxy alkoxy silane modified acrylate copolymer emulsions, and a preparation method and application thereof. The emulsions prepared therefrom can be used for buffer coatings, adhesives, sealants, and pads. Tablets, inks, and cleaning agents. Background technique [0002] Acrylic emulsion has many outstanding advantages, such as excellent light resistance, weather resistance, acid and alkali resistance, corrosion resistance, and good oil resistance. At the same time, partly because of its low cost, the emulsion is widely used in automobiles, construction, electromechanical products and other fields. However, due to the need to improve the heat resistance, cold resistance, water resistance and solvent resistance of the acrylic emulsion, the emulsion still has shortcomings. [0003] Silicone resin has excellent properties such as flexibility, high temperature resistance, low temperature resistance, weather resistance and...

AI Technical Summary

Problems solved by technology

Modified acrylate emulsion with acryloyloxyalkoxysilane can improve the tensile strength, abrasion resistance, solvent resistance and water resistance of the coating film, but the existing technology or process is complicated (such as the need for seed polymerization or radiation Initiate polymerization: see: Sima Wenlong, Song Lei, Anhui Chemical Industry, Vol.136, 2005(4), 23), or it is necessary to mix other types of unsaturated monomers (including highly volatile and toxic methacrylate monomers) body) and a relatively large amount of silane monomer can be used to achieve satisfactory results (see "Study on γ-methacryloxypropyltrimethoxysilane modified acrylate emulsion", Gong Xingyu, Fan Xiaodong, Polymer Materials Science and Engineering, Vol.19, No.1, Jan.2003: 62; Gui Qiang, et al., Chemical Building Materials, Issue 4, 2004(10): 8; and Chinese patent application CN1155635C of Wang Jian, Wang Chen, and Chen Dequan and CN1130437C, the authorization announcement date is June 30, 2004 and December 10, 2003 respectively)

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