Method for preparing organic silicon modified polyacrylic acid (polyacrylate) emulsion

A technology of polyacrylic acid and silicone, which is applied in the field of preparation of silicone-modified polyacrylic acid emulsion, which can solve the problems of affecting the activity of silicone, poor emulsion homogeneity, easy loss of light, etc., achieve good dispersion and stability, and shorten production time , The effect of simplifying the preparation process

Active Publication Date: 2004-11-17
广东鸿昌化工有限公司
View PDF0 Cites 30 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there are also some disadvantages: such as easy loss of light, poor low temperature toughness, high water permeability, etc.
The cold blending method is simple to operate, but it is easy to cause two-phase separation and the storage period is short
The chemical method is generally to carry out emulsion copolymerization with organosiloxane monomers containing vinyl groups and acrylic acid (ester) monomers, but this kind of siloxane is easy to hydrolyze, which affects the activity of

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Example 1:

[0022] 1) Pre-emulsification: 0.8g sodium lauryl sulfate, 1.2g nonylphenol polyoxyethylene vinyl ether (OP-10), 1.0g ethoxylated alkylphenol ammonium sulfate (RHODAPEX CO-436, 58% ), 0.25g potassium persulfate, 0.4g dodecylbenzene sulfonic acid dissolved in 130.0g deionized water, after stirring evenly, 48.5g butyl acrylate, 48.5g methyl methacrylate, 1.5g acrylic acid, 2.0g N-methylolacrylamide, 5.0g α-hydroxypropyl acrylate, 18.5g octamethylcyclotetrasiloxane, 1.3g γ-methacryloxypropyltrimethoxysilane, 1.5g cetyl alcohol The mixture is added and stirred to obtain the pre-emulsion for use.

[0023] 2) Synthesis of silicone-acrylic emulsion: In a reaction flask equipped with a thermometer, agitator, reflux condenser and dropping funnel, 0.5g sodium lauryl sulfate, 0.6g nonylphenol polyoxyethylene vinyl ether (OP -10), 0.5g ethoxylated alkylphenol ammonium sulfate (RHODAPEX CO-436), 0.3g potassium persulfate, 0.3g dodecylbenzene sulfonic acid, add 50g deionized ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a process for preparing organic silicon modified polyacrylic acid (polyacrylate) emulsion with high organic silicon content (15%-25%), wherein the ring-opening polymerization of epoxy silane is carried out simultaneously with the free radical polymerization of vinyl monomer, i.e., (1) ring-opening polymerization occurs to epoxy silane at the presence of catalyst, and organic (ring) siloxane containing unsaturated bonds polycondensation is carried out, thus producing organosilicon resin and organosilicon resin containing unsaturated double bonds, (2) at the presence of initiating agent, the free radical polymerization of vinyl monomer is carried out, and in-situ graft polymerization of organosilicon resin containing unsaturated bonds is carried out to prepare organic silicon-g polyacrylic acid (ester) grafted copolymer (as compatiblizing agent).

Description

technical field [0001] The invention relates to a preparation method of silicone-modified polyacrylic acid (ester) emulsion (hereinafter referred to as silicone-acrylic emulsion), especially a preparation method of silicone-acrylic emulsion with high organic silicon content (15%-25%). Background technique [0002] Acrylic (ester) resin coatings are new varieties of coatings developed in the 1950s. It has the following advantages: light color, excellent transparency, no discoloration, acid, alkali and salt resistance, grease resistance, etc. But there are also some disadvantages: such as easy loss of light, poor low temperature toughness, high water permeability, etc. In order to make up for these deficiencies in the performance of acrylic (ester) resins, it is generally necessary to modify acrylic (ester) resins. The modification technology of acrylic (ester) resins is mainly related to silicone. Silicone resins for coatings use Si-O-Si as the main chain. Because the bond ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08F2/22C08F230/08
Inventor 王俊卿曾汉民洪星蔡国衡
Owner 广东鸿昌化工有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap