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Acrylate/silicone-acrylate compound emulsion and method for preparing same

An acrylate, silicone-acrylic emulsion technology, used in the field of latex paint, can solve the problems of poor emulsion stability, easy phase separation, poor weather resistance and adhesion, etc., and achieves good compatibility, good hydrophobicity, practical solidification. The effect of high content and monomer conversion

Active Publication Date: 2011-04-20
HUBEI JIAJI SYNTHESIS MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large difference in polarity between organosiloxane and acrylate, the blended emulsion prepared by this method has poor emulsion stability and is prone to phase separation, and the improvement of its weather resistance and adhesion is not obvious.

Method used

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  • Acrylate/silicone-acrylate compound emulsion and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] ①Preparation of base liquid A: Add 135g of deionized water, 0.4g of polyoxyethylene nonyl ether ammonium sulfate, 0.15g of sodium bicarbonate , be heated up to the temperature in the kettle reaches 78 ℃;

[0037] ② Preparation of monomer solution B: Stir and mix all the monomers into a uniform solution, including 117.3g of n-butyl acrylate, 105.2g of methyl methacrylate, and 2.5g of functional monomer acrylic acid;

[0038] ③Preparation of initiator emulsifier mixed solution C: add 0.6g polyoxyethylene nonyl ether ammonium sulfate and 0.5g ammonium persulfate to 85g deionized water, stir to dissolve;

[0039] ④Preparation of post-addition initiator solution D: add 0.075g tert-butyl hydroperoxide and 0.075g diaobai to 30g deionized water, stir to dissolve;

[0040] ⑤ Add 14gB into the reactor, when the temperature in the kettle reaches 78℃, add 20gC, after 10-20min, add the remaining B and C into the reactor at the same time through the constant flow pump, the dropping ...

Embodiment 2

[0043]①Preparation of base liquid A: Add 140g deionized water, 0.7g polyoxyethylene octyl ether ammonium sulfate, 0.22g ammonium bicarbonate , heated up until the temperature in the kettle reached 80°C;

[0044] ② Preparation of monomer solution B: Stir and mix all the monomers into a uniform solution, including 116.9 g of n-butyl acrylate, 107 g of methyl methacrylate, and 6.1 g of functional monomer acrylic acid;

[0045] ③Preparation of initiator emulsifier mixed solution C: add 0.9g polyoxyethylene octyl ether ammonium sulfate and 1.4g potassium persulfate to 87g deionized water, stir to dissolve;

[0046] ④Preparation of post-addition initiator solution D: Add 0.12g tert-butyl hydroperoxide and 0.12g diaobai to 31g deionized water, stir to dissolve;

[0047] ⑤Add 21gB into the reactor, when the temperature in the kettle reaches 80℃, add 29gC, after 10-20min, add the remaining B and C into the reactor at the same time through the constant flow pump, the dropping time is c...

Embodiment 3

[0050] ①Preparation of base liquid A: Add 143g of deionized water, 1.0g of polyoxyethylene dinonyl ether ammonium sulfate, and 0.36g of ammonia into a reactor with a stirrer, condenser, and constant-flow pump feeding device, Raise the temperature until the temperature in the kettle reaches 84°C;

[0051] ② Preparation of monomer solution B: Stir and mix all the monomers into a uniform solution, including 122.6 g of ethyl acrylate, 110.7 g of methyl methacrylate, and 8.7 g of functional monomer monobutyl itaconate;

[0052] ③Preparation of initiator emulsifier mixed solution C: add 1.3g of polyoxyethylene dinonyl ether ammonium sulfate and 1.7g of potassium persulfate-potassium thiosulfate initiator into 90g of deionized water, and stir to dissolve;

[0053] ④Preparation of post-addition initiator solution D: add 0.19g tert-butyl hydroperoxide and 0.19g diaobai to 33g deionized water, stir to dissolve;

[0054] ⑤Add 27gB into the reactor, when the temperature in the kettle rea...

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Abstract

The invention discloses an acrylate / silicone-acrylate compound emulsion and a method for preparing the same. Acrylate emulsions are prepared from acrylate as a main monomer, polyoxyethylene alkyl ether ammonium sulfate as emulsifier and various functional monomers containing carboxyl and are compounded with an silicone-acrylate emulsion to prepare the novel compound emulsion. The process for preparing the compound emulsion is simple, and the compound emulsion not only has the good hydrophobicity, stain resistance, washability and recoatability of the silicone-acrylate emulsion, but also has the good film forming performance, glossiness and solvent resistance of the acrylate emulsion. The compound emulsion film has higher mechanical strength and stronger adhesive force, the problems that the silicone-acrylate emulsion film has lower strength, poor adhesion and the like are solved, and the application range of the silicone-acrylate emulsion film is enlarged. The acrylate / silicone-acrylate compound emulsion can be applied to the field of emulsion coatings for coating roofs, internal walls, external walls, kitchens and the like and also can be applied to the water-proof stain-resistance occasions. The acrylate / silicone-acrylate compound emulsion can improve the grade of the emulsion coating.

Description

technical field [0001] The invention relates to the field of latex paint, in particular to a preparation method of acrylate / silicon acrylic compound emulsion. Background technique [0002] Silicone-modified acrylate emulsion (silicon-acrylic emulsion for short) is a new type of architectural coating emulsion that has been widely studied in recent years. This type of emulsion is the copolymerization of organosiloxane monomer and acrylate monomer to make up for the lack of performance of the two. It is hoped to endow the modified product with new performance and obtain a new emulsion product with both excellent performances. At present, the research on silicone-acrylic emulsion mainly focuses on the following aspects, namely, the improvement and innovation of emulsion preparation technology, the development of new acrylate monomers and new silicone monomers, the development of reactive emulsifiers and nanotechnology application etc. Although silicone-acrylic emulsions have g...

Claims

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Application Information

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IPC IPC(8): C08L33/08C08L33/04C08F220/18C08F220/14C08F220/06C08F222/16C08F222/14C08F2/30C08F2/26C09D133/08C09D133/04C09D5/02
Inventor 鲁德平谢瑾叶青赵倩袁婷婷管蓉
Owner HUBEI JIAJI SYNTHESIS MATERIALS CO LTD
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