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Coatings Containing Silicone Organofluorine-Modified (Meth)acrylate Polymer Emulsions

A technology of polymer emulsion and acrylate, which is applied in the direction of alkali metal silicate coatings and coatings, and can solve the problems of silicone acrylic emulsion placement, unstable production, insignificant water and alkali resistance, and affecting practical effects, etc. , to achieve the effect of excellent film appearance, good fixation effect and easy construction

Active Publication Date: 2015-11-18
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Coatings Containing Silicone Organofluorine-Modified (Meth)acrylate Polymer Emulsions
  • Coatings Containing Silicone Organofluorine-Modified (Meth)acrylate Polymer Emulsions
  • Coatings Containing Silicone Organofluorine-Modified (Meth)acrylate Polymer Emulsions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1: Preparation of coating containing siloxane organic fluorine modified (meth)acrylate polymer emulsion

[0043] (1) Preparation of siloxane organic fluorine modified (meth)acrylate polymer emulsion:

[0044] 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 1.3g methacrylic acid, 5.3g isooctyl methacrylate, 2.5g isobutyl methacrylate, 50g hexafluorobutyl methacrylate, 0.5g ammonium persulfate (dissolved in 10 g of deionized water), reacted at 70°C for 9 hours, and then air-cooled to obtain a siloxane-containing organic fluorine-modified (meth)acrylate polymer emulsion.

[004...

Embodiment 2

[0046]Example 2: Preparation of coating containing siloxane organofluorine modified (meth)acrylate polymer emulsion

[0047] (1) Preparation of siloxane organic fluorine modified (meth)acrylate polymer emulsion:

[0048] 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 methacrylic acid, 20.5g ethyl acrylate, 7.2g methyl acrylate, 30g trifluoroethyl methacrylate, 1.8g potassium persulfate (dissolved in 10g deionized water), react at 80°C for 5h, and discharge in air , to obtain silicone organofluorine modified (meth)acrylate polymer emulsion.

[0049] (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, 30 parts by weight of tita...

Embodiment 3

[0050] Example 3: Preparation of coatings containing siloxane organic fluorine-modified (meth)acrylate polymer emulsions

[0051] (1) Preparation of siloxane organic fluorine modified (meth)acrylate polymer emulsion:

[0052] Add 150g of deionized water, 6g 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 octamethylcyclotetrasiloxane (D4), feed nitrogen, react at 90°C for 3h, then add 20g methacrylic acid, 38.5g n-propyl acrylate, 11.5g acrylic acid, 20g dodecafluoromethacrylate Heptyl ester, 3.0 g of potassium persulfate (dissolved in 10 g of deionized water), reacted at 90°C for 3 hours, and then air-cooled to obtain a siloxane organofluorine-modified (meth)acrylate polymer emulsion.

[0053] (2) Take 100 parts by weight of sodium silicate aqueous solution with a Baume degree of 0.35 and a modulus of 5.6, 100 parts by weight of w...

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Abstract

The invention belongs to the technical field of paint preparation, and discloses a paint containing a siloxane organic fluorine modified (methyl) acrylate polymer emulsion. The paint is composed of the following components by weight: 100 parts of inorganic silicate, 1-50 parts of a siloxane organic fluorine modified (methyl) acrylate polymer emulsion, 4-100 parts of water, 0.5-5 parts of a defoaming agent, 0.5-5 parts of a dispersant, 0.5-5 parts of a thickening agent, 0.5-4 parts of an antifreeze agent, 0.5-5 parts of a coalescing agent and 40-100 parts of a filler. The invention also discloses a preparation method of the paint. The paint containing the siloxane organic fluorine modified (methyl) acrylate polymer emulsion provided by the invention has advantages of waterproofness, wear resistance, acid and alkali resistance, good fixation effect, washing resistance (the paint can be repeatedly washed for more than 890 times) and stable film formation.

Description

technical field [0001] The invention belongs to the technical field of paint preparation, in particular to a paint containing siloxane organic fluorine 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 alka...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/04C09D133/16C09D133/08C08F220/06C08F220/18C08F220/22C08F230/08
Inventor 刘伟区苏奎
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI