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Core/shell type organosilicone-modified acrylate emulsion and preparation method and application thereof

A technology of acrylates and acrylates, 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 in water repellents, poor water repellency, and high viscosity of silicones. and other problems, to achieve the effect of uniform appearance, guaranteed film-forming performance, and excellent film-forming performance

Inactive Publication Date: 2016-05-25
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 organosilicone-modified acrylate emulsion and a preparation method and application thereof. The core / shell type emulsion is prepared through polymerization based on the core / shell emulsion polymerization technology and is prepared from, by weight, 500-850 parts of acrylate mixed monomers, 150-500 parts of organosilicone monomers, 10-50 parts of an emulsifying agent, 5-12 parts of an initiating agent, 5-50 parts of a crosslinking agent and 1000-4000 parts of water, wherein acrylate mixed monomers are composed of methyl methacrylate, butyl acrylate and acrylic acid at the mass ratio of (1.0-3.5):(6.5-9.0):(0.15-0.75), and a seed emulsion in the core / shell emulsion polymerization technology is obtained through polymerization of the acrylate mixed monomers. The core / shell type emulsion is good in stability, the mean grain size is 170 nm or so, and an emulsion film has an excellent film-forming property, an excellent bonding property, low surface energy and good waterproofness.

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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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
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