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Core/shell type silicone modified acrylate emulsion and its preparation method and application

A technology of acrylate and acrylate, which is applied in the field of core/shell silicone modified acrylate emulsion and its preparation, and can solve the problem of low silicone content, high silicone viscosity and poor water repellency in water repellent agents. and other problems, to achieve the effect of uniform appearance, excellent film-forming performance, and guaranteed film-forming performance

Inactive Publication Date: 2018-03-16
INST OF IND TECH GUANGZHOU & CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, silicone water repellents are mostly prepared from macromolecular silicone oil (vinyl silicone oil, epoxy silicone oil, hydrogen-containing silicone oil), cyclic or linear silane coupling agent as raw materials, but there are silicones with high viscosity and difficulty Problems such as easy hydrolysis and condensation in the process of emulsification and emulsion polymerization, resulting in the actual silicone content in the water repellent agent is not high (≤15%), resulting in poor water repellency and other problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] In this example, a core / shell type silicone-modified acrylate emulsion with high silicon content is prepared from the following raw materials in parts by weight: 850 parts of acrylate mixed monomer, 150 parts of silicone monomer, and 10 parts of emulsifier , 5 parts of initiator, 5 parts of crosslinking agent, 4000 parts of deionized water;

[0046] The acrylate mixed monomer is methyl methacrylate, butyl acrylate and acrylic acid with a mass ratio of 1.0:9.0:0.15;

[0047] The organosilicon monomer is γ-methacryloxypropyl tris(trimethylsiloxy)silane (TRIS);

[0048] The emulsifier is composed of stearyl polyether acrylate trimethylammonium chloride and isomeric tridecyl alcohol polyoxyethylene ether, and the mass ratio of the two is 1:1;

[0049] Described initiator is azobisisobutylamidine hydrochloride;

[0050] The crosslinking agent is glycidyl methacrylate.

[0051] The preparation method of the above-mentioned core / shell type high silicon content organosilicon...

Embodiment 2

[0062] In this example, a core / shell type silicone-modified acrylate emulsion with high silicon content is prepared from the following raw materials in parts by weight: 800 parts of acrylate mixed monomer, 200 parts of silicone monomer, and 20 parts of emulsifier , 8 parts of initiator, 14 parts of crosslinking agent, 3200 parts of deionized water;

[0063] The acrylate mixed monomer is methyl methacrylate, butyl acrylate and acrylic acid with a mass ratio of 1.5:8.5:0.3;

[0064] The organosilicon monomer is γ-methacryloxypropyl tris(trimethylsiloxy)silane (TRIS);

[0065] The emulsifier is composed of stearyl polyether acrylate trimethylammonium chloride and isomeric tridecyl alcohol polyoxyethylene ether, and the mass ratio of the two is 1:1;

[0066] Described initiator is azobisisobutylimidazoline hydrochloride;

[0067] The crosslinking agent is hydroxyethyl acrylate.

[0068] The preparation method of the above-mentioned core / shell type high silicon content organosil...

Embodiment 3

[0079] In this example, a core / shell type silicone-modified acrylate emulsion with high silicon content is prepared from the following raw materials in parts by weight: 750 parts of acrylate mixed monomer, 350 parts of silicone monomer, and 24 parts of emulsifier , 9 parts of initiator, 26 parts of crosslinking agent, 2800 parts of deionized water;

[0080] The acrylate mixed monomer is methyl methacrylate, butyl acrylate and acrylic acid with a mass ratio of 2.0:8.0:0.45;

[0081] The organosilicon monomer is γ-methacryloxypropyl tris(trimethylsiloxy)silane (TRIS);

[0082] The emulsifier is composed of stearyl polyether acrylate trimethylammonium chloride and isomeric tridecyl alcohol polyoxyethylene ether, and the mass ratio of the two is 1:1;

[0083] The initiator is a combination of azobisisobutyronitrile and azobisisobutylamidine hydrochloride with a mass ratio of 1:1;

[0084] The crosslinking agent is methylol acrylate.

[0085] The preparation method of the above-...

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Abstract

The invention relates to a core / shell type organosilicon-modified acrylate emulsion and a preparation method and application thereof. The core / shell emulsion is polymerized by core-shell emulsion polymerization technology, and includes the following raw materials in parts by weight: 500-850 parts of acrylate mixed monomer, 150-500 parts of silicone monomer, 10-50 parts of emulsifier parts, 5-12 parts of initiator, 5-50 parts of crosslinking agent, 1000-4000 parts of water, wherein, the mass ratio of the acrylate mixed monomer is (1.0-3.5): (6.5-9.0): ( 0.15-0.75) of methyl methacrylate, butyl acrylate and acrylic acid, and the seed emulsion in the core-shell emulsion polymerization technology is obtained by polymerization of the acrylate mixed monomer. The core / shell type emulsion has good stability, the average particle size is about 170nm, and its latex film has excellent film-forming performance, adhesive performance, low surface energy and good water resistance.

Description

technical field [0001] The invention relates to the technical field of organic synthesis, in particular to a core / shell type organosilicon-modified acrylate emulsion and a preparation method and application thereof. Background technique [0002] With the development of industry, the progress of society, and the improvement of people's living standards and quality of life, water repellents have been widely used in many fields such as construction, textiles, leather, papermaking, and packaging. [0003] Commonly used water repellents in industry mainly include fluorine-containing, silicon-containing and aliphatic hydrocarbon compounds, etc. Among them, fluorine-containing water repellents can endow the substrate with excellent water repellency, oil repellency, self-cleaning and air permeability, and are most used wide. However, fluorine-containing water repellents are not resistant to low temperatures, have poor adhesion to substrates, have certain bioaccumulation toxicity, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/18C08F220/14C08F220/06C08F230/08C08F220/32C08F220/28C08F2/28C08F2/30D06M15/356
CPCD06M15/3568C08F2/28C08F2/30C08F220/18D06M2200/12C08F220/1804C08F220/14C08F220/06C08F230/08C08F220/281C08F220/325
Inventor 杨番王柱刘海峰胡志忠张涛
Owner INST OF IND TECH GUANGZHOU & CHINESE ACADEMY OF SCI