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Preparation method of novel amino silicone oil modified acrylate anti-doodling emulsion

A technology of acrylate and amino silicone oil, which is applied in the direction of antifouling/underwater coatings, coatings, paints containing biocide, etc., and can solve the problems of low silicone introduction, volatile organic compound pollution, difficult polymerization of silicone monomers, etc. problems, to achieve the effect of green environmental protection and stable structure of the process

Active Publication Date: 2020-06-26
ANHUI XOANONS CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of a novel amino silicone oil modified acrylate anti-graffiti emulsion, aiming to solve the problem of difficult polymerization of organosilicon monomer and silane active group in the preparation of conventional silicone modified acrylate anti-graffiti emulsion. The group is prone to self-crosslinking, low amount of silicone introduction, volatile organic compound pollution and other problems

Method used

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  • Preparation method of novel amino silicone oil modified acrylate anti-doodling emulsion
  • Preparation method of novel amino silicone oil modified acrylate anti-doodling emulsion
  • Preparation method of novel amino silicone oil modified acrylate anti-doodling emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Add 30g of deionized water and 1.8g of composite emulsifier to the reactor, stir at 400rpm for 20 minutes, then dropwise add 25g of methyl methacrylate monomer, 16g of butyl acrylate monomer, and 1.6g of acrylic acid The mixture of the monomer, 20 g of hydroxyethyl methacrylate monomer, and 2.4 g of glycidyl methacrylate monomer was added dropwise for 40 minutes, and stirred for 60 minutes after the drop was completed to prepare an acrylate pre-emulsion.

[0028] Add the deionized water of 6g pre-emulsion, 0.8g emulsifier, 0.1g potassium persulfate and 50g in reactor, drop the pre-emulsion of 78g and 0.2g potassium persulfate (dissolve in 8g deionized water), Polymerize at 80°C for 2 hours, keep the temperature for 80 minutes after dripping, and lower to normal temperature to prepare an acrylate emulsion containing epoxy groups.

[0029] Add 0.048g of 1,3-bis(3-aminopropyl)-tetramethyldisiloxane, 48g of octamethylcyclotetrasiloxane (D4), 0.006g of catalyst, 0.3g Accele...

Embodiment 2

[0032] Add 24g of deionized water and 1.5g of composite emulsifier to the reactor, stir at 500rpm for 20 minutes, then dropwise add 30g of methyl methacrylate monomer, 12g of butyl acrylate monomer, and 1.8g of acrylic acid The mixture of monomers, 16 g of hydroxyethyl methacrylate monomer and 1.8 g of glycidyl methacrylate monomer was added dropwise for 60 minutes, and stirred for 45 minutes after the completion of the dropping to prepare an acrylate pre-emulsion.

[0033] Add the deionized water of the emulsifying agent of 8g pre-emulsion, 1g, 0.12g ammonium persulfate and 54g in reactor, drop the pre-emulsion of 76g and the ammonium persulfate of 0.24g (dissolve in 12g deionized water), in Polymerize at 85°C for 3 hours, keep the temperature for 60 minutes after dripping, and lower to normal temperature to prepare an acrylate emulsion containing epoxy groups.

[0034] Add 0.096g of 1,3-bis(3-aminopropyl)-tetramethyldisiloxane, 42g of octamethylcyclotetrasiloxane (D4), 0.008...

Embodiment 3

[0037] Add 18g of deionized water and 1.2g of composite emulsifier to the reaction kettle, stir for 40 minutes at 600rpm, then dropwise add 35g of methyl methacrylate monomer, 8g of butyl acrylate monomer, 2g of acrylic acid mono Body, the mixture of 12g of hydroxyethyl methacrylate monomer and 1.2g of glycidyl methacrylate monomer was added dropwise for 80 minutes, and stirred for 30 minutes after the drop was completed to prepare an acrylate pre-emulsion.

[0038] Add 10g pre-emulsion, 1.2g emulsifier, 0.14g sodium persulfate and 58g deionized water in reactor, add dropwise 74g pre-emulsion and 0.28g sodium persulfate (dissolved in 16g deionized water), Polymerize at 90°C for 4 hours, keep the temperature for 40 minutes after dripping, and lower to normal temperature to prepare an acrylate emulsion containing epoxy groups.

[0039] Add 0.144g of 1,3-bis(3-aminopropyl)-tetramethyldisiloxane, 36g of octamethylcyclotetrasiloxane (D4), 0.01g of catalyst, 0.1g of Accelerator, re...

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Abstract

The invention discloses a preparation method of a novel amino silicone oil modified acrylate anti-doodling emulsion, which comprises the following steps: reacting an epoxy group with an amino group, adding glycidyl methacrylate during emulsion polymerization, introducing the epoxy group to the molecular chain of the emulsion, and reacting with amino-terminated silicone oil to prepare the novel amino silicone oil modified acrylate anti-doodling emulsion. According to the novel amino silicone oil modified acrylate anti-doodling emulsion disclosed by the invention, silicone oil is introduced through a cross-linking reaction, so that the problems that an organic silicon monomer is difficult to polymerize, silane active groups are easy to generate self-crosslinking, the introduction amount of organic silicon is relatively low, volatile organic compounds are polluted and the like caused by a conventional process are solved. The emulsion prepared by the invention not only has the characteristics of extremely strong adhesive force, better ethanol resistance, scrubbing resistance, mechanical shearing resistance and the like, but also has excellent high temperature resistance, weather resistance and chemical resistance, and can be widely applied to the fields of coatings, printing ink, adhesives and the like.

Description

technical field [0001] The invention relates to a preparation method of a novel amino silicone oil modified acrylate anti-graffiti emulsion, which belongs to the field of fine chemical chemicals. Background technique [0002] As we all know, latex paint is mostly used for wall decoration of modern buildings, but ordinary latex paint does not have anti-graffiti function, is easy to be polluted by graffiti, and is difficult to clean, and the maintenance cost is high. Therefore, the market gives great support to professional anti-graffiti paint products. expectations. [0003] In recent years, with the advancement of anti-graffiti emulsion preparation technology, silicone-modified acrylate anti-graffiti emulsion has been developed. Silicone-modified acrylate anti-graffiti emulsion not only has excellent film-forming properties, but also can improve the water resistance, stain resistance and scrub resistance of the coating film, so it has attracted the attention of the industry...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/442C08G77/26C08F220/14C08F220/18C08F220/06C08F220/20C08F220/32C09D183/10C09D5/16
CPCC08G77/442C08G77/26C08F220/14C09D183/10C09D5/1675C09D183/08
Inventor 季永新郑绪敏吕正伟陈永康
Owner ANHUI XOANONS CHEM
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