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Organic-inorganic hybrid coating containing modified (methyl) acrylic ester copolymer emulsion

A polymer emulsion and acrylate technology, applied in the direction of coating, can solve the problems of insufficient weather resistance, easy to become brittle, poor water resistance, etc., and achieve the effect of excellent film appearance, improved water resistance, and good fixing effect.

Active Publication Date: 2013-10-23
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it also has disadvantages such as poor water resistance, easy to become brittle at low temperature, and insufficient weather resistance, which affect its practical effect.
Therefore, researchers have developed silicone-acrylic emulsions. By introducing silane coupling agents into acrylate emulsions, certain water resistance and alkali resistance can be produced. The productivity is unstable, and because the silane coupling agent has a short silicon-oxygen chain, its water and alkali resistance is not obvious

Method used

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  • Organic-inorganic hybrid coating containing modified (methyl) acrylic ester copolymer emulsion
  • Organic-inorganic hybrid coating containing modified (methyl) acrylic ester copolymer emulsion
  • Organic-inorganic hybrid coating containing modified (methyl) acrylic ester copolymer emulsion

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Example 1: Preparation of organic-inorganic hybrid coating containing modified (meth)acrylate polymer emulsion

[0041] (1) Preparation of long-chain siloxyvinylsiloxane modified (meth)acrylate polymer emulsion:

[0042] Add 110g of deionized water, 4g of dodecylbenzenesulfonic acid (DBSA), 2g of alkylphenol polyoxyethylene ether (NP-9) into a reaction vessel equipped with a stirrer, a thermometer, a condenser tube and a nitrogen gas inlet tube , 37.5g octamethylcyclotetrasiloxane (D4), feed nitrogen, react at 70°C for 9h, then add 2.5g γ-methacryloxypropyl trimethoxysilane (KH-570), at 70 After reacting at ℃ for 9 hours, air-cool the material, then add 2g of methacrylic acid, 5.3g of isooctyl methacrylate, 2.5g of isobutyl methacrylate, 0.5g of ammonium persulfate (dissolved in 10g of deionized water), at 70°C After reacting for 9 hours, the mixture was air-cooled and discharged to obtain a long-chain siloxyvinylsiloxane-modified (meth)acrylate polymer emulsion.

[0...

Embodiment 2

[0044] Example 2: Preparation of organic-inorganic hybrid coating containing modified (meth)acrylate polymer emulsion

[0045] (1) Preparation of long-chain siloxyvinylsiloxane modified (meth)acrylate polymer emulsion:

[0046]Add 130g deionized water, 5g dodecylbenzenesulfonic acid (DBSA), 2.5g alkylphenol polyoxyethylene ether (NP-9 ), 25g of octamethylcyclotetrasiloxane (D4), blowing in nitrogen, reacting at 80°C for 5h, then adding 6.0g of allyltriethoxysilane, reacting at 80°C for 5h, and discharging in air, then Add 10g of methacrylic acid, 20.5g of ethyl acrylate, 7.2g of methyl acrylate, 1.8g of potassium persulfate (dissolved in 10g of deionized water), react at 80°C for 5 hours, and discharge in air to obtain long-chain siloxyvinyl Silicone modified (meth)acrylate polymer emulsion.

[0047] (2) Take 100 parts by weight of an aqueous potassium silicate solution with a Baume degree of 0.35 and a modulus of 3.5, 50 parts by weight of water, 20 parts by weight of a col...

Embodiment 3

[0048] Example 3: Preparation of organic-inorganic hybrid coating containing modified (meth)acrylate polymer emulsion

[0049] (1) Preparation of long-chain siloxyvinylsiloxane modified (meth)acrylate polymer emulsion:

[0050] Add 150g of deionized water, 5g of dodecylbenzenesulfonic acid (DBSA), 4g of alkylphenol polyoxyethylene ether (NP-9) into a reaction vessel equipped with a stirrer, thermometer, condenser tube and nitrogen gas inlet tube , 15g of octamethylcyclotetrasiloxane (D4), blowing nitrogen, reacting at 90°C for 3h, then adding 7.5g of allyltrimethoxysilane, reacting at 90°C for 3h, discharging in air, then adding 20g Acrylic acid, 38.5g of n-propyl acrylate, 11.5g of acrylic acid, 3.0g of potassium persulfate (dissolved in 10g of deionized water), reacted at 90°C for 3 hours, and then air-cooled to obtain long-chain siloxyvinyl siloxane modified (meth)acrylate polymer emulsion.

[0051] (2) Take 100 parts by weight of sodium silicate aqueous solution with a B...

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Abstract

The invention belongs to the technical field of coating preparation, and discloses an organic-inorganic hybrid coating containing a modified (methyl) acrylic ester copolymer emulsion. The organic-inorganic hybrid coating comprises the following components in parts by weight: 100 parts of inorganic silicate, 1-50 parts of long-chain siloxy vinyl siloxane modified (methyl) acrylic ester copolymer emulsions, 4-100 parts of water, 0.5-5 parts of defoaming agents, 0.5-5 parts of dispersing agents, 0.5-5 parts of thickening agents, 0.5-4 parts of anti-freeze agents, 0.5-5 parts of film-forming auxiliary agents and 40-100 parts of fillers. The invention also discloses a preparation method of the organic-inorganic hybrid coating. The organic-inorganic hybrid coating containing the modified (methyl) acrylic ester copolymer emulsion, which is disclosed by the invention, has the advantages of water resistance, abrasion resistance, acid resistance, alkali resistance, good fixation effect, film-forming stability, and the like.

Description

technical field [0001] The invention belongs to the technical field of paint preparation, in particular to an organic-inorganic hybrid paint containing a modified (meth)acrylate polymer emulsion. Background technique [0002] Inorganic interior and exterior wall coatings usually use inorganic silicate as a film-forming material. Inorganic silicate has the advantages of abundant raw materials, low cost, no pollution, high temperature resistance and aging resistance. It has a certain viscosity, strong cohesive force and film-forming ability, which meets the energy-saving and environmental protection requirements of contemporary building materials. However, due to the poor water resistance, adhesion and flexibility of inorganic silicates after film formation, the inorganic interior and exterior wall coatings are not washable, have poor hardness, and are easy to crack and fall off. [0003] Compared with inorganic silicates, acrylate emulsions generally have better water and al...

Claims

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Application Information

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IPC IPC(8): C09D133/10C09D133/08C09D133/02C09D7/12C08F220/18C08F220/06C08F230/08C08F220/14C08F220/32C08F2/26C08F2/30
Inventor 刘伟区苏奎
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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