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Anti-fouling and water-resistant silicone-acrylate emulsion and preparation method thereof

A silicone-acrylic emulsion and aqueous solution technology, applied in antifouling/underwater coatings, applications, coatings, etc., can solve the problems of difficulty in the selection of copolymerized silicone monomers, affecting the stability of the emulsion polymerization reaction, and achieve a stable polymerization process. Control, good storage stability, small particle size of emulsion

Active Publication Date: 2018-08-21
HANGZHOU HIWETECH CHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, silicone monomers are prone to hydrolysis and condensation reactions, which will seriously affect the stability of emulsion polymerization.
On the other hand, most silicone monomers and (meth)acrylates have a huge gap in molecular structure and polarity, which will lead to different degrees of phase separation of the resin due to compatibility problems, so copolymerized silicone monomers Body selection is more difficult

Method used

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  • Anti-fouling and water-resistant silicone-acrylate emulsion and preparation method thereof
  • Anti-fouling and water-resistant silicone-acrylate emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Raw material manufacturers used in the following:

[0039] n-butyl acrylate monomer (Guangzhou Zhongye Chemical Co., Ltd.), AC-76 (Ark (Fogang) Chemical Material Co., Ltd.), methyl methacrylate monomer (Guangzhou Zhongye Chemical Co., Ltd.), isopropyl Benzene hydroperoxide (SIGMA-ALDRICH company), N,N-dimethyltoluidine (Tianjin CITIC Kaitai Chemical Co., Ltd.), NE-10 (ADEKA company), SE-1025A (ADEKA company), sodium persulfate ( Suzhou Huahang Chemical Technology Co., Ltd.), isopropanol (Yonghua Chemical Technology (Jiangsu) Co., Ltd.), sodium bicarbonate (Shanghai Abby Chemical Reagent Co., Ltd.), tert-butyl hydroperoxide (Shanghai Baiyi Chemical Co., Ltd.) , Diaobaifen (Shanghai Fengrui Chemical Co., Ltd.).

[0040] Preparation of silicone acrylic emulsion:

[0041] (1) Preparation of shell monomer dropwise addition phase:

[0042] Mix 5g n-butyl acrylate monomer, 20g AC-76, 7g methyl methacrylate monomer, 0.7g cumene hydroperoxide, 0.6g N,N-dimethyltoluidine, 1g N...

Embodiment 2

[0045] Raw material manufacturers used in the following:

[0046] n-butyl acrylate monomer (Guangzhou Zhongye Chemical Co., Ltd.), AC-76 (Ark (Fogang) Chemical Material Co., Ltd.), methyl methacrylate monomer (Guangzhou Zhongye Chemical Co., Ltd.), isopropyl Benzene hydroperoxide (SIGMA-ALDRICH company), N,N-dimethyltoluidine (Tianjin CITIC Kaitai Chemical Co., Ltd.), NE-10 (ADEKA company), SE-1025A (ADEKA company), sodium persulfate ( Suzhou Huahang Chemical Technology Co., Ltd.), isopropanol (Yonghua Chemical Technology (Jiangsu) Co., Ltd.), sodium bicarbonate (Shanghai Abby Chemical Reagent Co., Ltd.), tert-butyl hydroperoxide (Shanghai Baiyi Chemical Co., Ltd.) , Diaobaifen (Shanghai Fengrui Chemical Co., Ltd.).

[0047] Preparation of silicone acrylic emulsion:

[0048] (1) Preparation of shell monomer dropwise addition phase:

[0049] Mix 5g n-butyl acrylate monomer, 21g AC-76, 7g methyl methacrylate monomer, 0.6g cumene hydroperoxide, 0.55g N,N-dimethyltoluidine, 1.1...

Embodiment 3

[0052] Raw material manufacturers used in the following:

[0053] n-butyl acrylate monomer (Guangzhou Zhongye Chemical Co., Ltd.), AC-76 (Ark (Fogang) Chemical Material Co., Ltd.), methyl methacrylate monomer (Guangzhou Zhongye Chemical Co., Ltd.), isopropyl Benzene hydroperoxide (SIGMA-ALDRICH company), N,N-dimethyltoluidine (Tianjin CITIC Kaitai Chemical Co., Ltd.), NE-10 (ADEKA company), SE-1025A (ADEKA company), sodium persulfate ( Suzhou Huahang Chemical Technology Co., Ltd.), isopropanol (Yonghua Chemical Technology (Jiangsu) Co., Ltd.), sodium bicarbonate (Shanghai Abby Chemical Reagent Co., Ltd.), tert-butyl hydroperoxide (Shanghai Baiyi Chemical Co., Ltd.) , Diaobaifen (Shanghai Fengrui Chemical Co., Ltd.).

[0054] Preparation of silicone acrylic emulsion:

[0055] (1) Preparation of shell monomer dropwise addition phase:

[0056] Mix 5g n-butyl acrylate monomer, 25g AC-76, 10g methyl methacrylate monomer, 0.8g cumene hydroperoxide, 0.6g N,N-dimethyltoluidine, 2g ...

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Abstract

The invention provides an anti-fouling and water-resistant silicone-acrylate emulsion and a preparation method thereof. The silicone-acrylate emulsion comprises the following raw materials in part byweight: 2-4 parts of a reactive anionic emulsifier, 1.8-3.1 parts of a reactive non-ionic emulsifier, 0.2-0.4 part of a pH buffering agent, 1.5-2.3 parts of an inorganic superoxide initiator, 0.6-0.8part of an oxidation initiator, 0.55-0.6 part of a reduction initiator, 7-10 parts of a methyl methacrylate monomer, 68-72 parts of an N-butyl acrylate monomer, 20-25 parts of an organosiloxane monomer, 1.2-1.5 parts of low-molecular alcohol, 0.06-0.08 part of tert-butyl hydroperoxide, 0.06-0.08 part of rongalite and 126-130 parts of deionized water. The silicone-acrylate emulsion provided by theinvention is excellent in anti-fouling and water-resistant properties, has an organosilicon monomer content of higher than 20 percent and is stable and controllable in the polymerization process, small in particle size and optimal in storage stability.

Description

(1) Technical field [0001] The invention relates to a silicon-acrylic emulsion and a preparation method thereof, in particular to a high-silicon-content silicon-acrylic emulsion (polymethacrylate emulsion) with antifouling and water resistance properties applicable to water-based coatings and ink systems and a preparation method thereof . (2) Background technology [0002] Poly(meth)acrylate emulsion refers to a product obtained by emulsion polymerization of acrylate (methacrylate) monomers and other vinyl ester monomers. Coatings and inks using poly(meth)acrylate emulsion as the main resin have many excellent properties, such as light resistance, oil resistance, weather resistance, and good adhesion to polar and non-polar surfaces. [0003] With the progress of society and the improvement of living standards, people's requirements for the appearance and internal quality of paint films are gradually increasing. Acrylate emulsions are also developing toward environmental pr...

Claims

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Application Information

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IPC IPC(8): C08F220/18C08F220/14C08F230/08C09D133/08C09D5/16C09D11/107
CPCC08F220/18C08F220/1804C09D5/1662C09D11/107C09D143/04C08F220/14C08F230/08
Inventor 许华君许少宏罗英武
Owner HANGZHOU HIWETECH CHEM TECH CO LTD
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