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Fluorine silicon modified polyester acrylate aqueous dispersion, and preparation method thereof

A polyester acrylic acid, fluorosilicone modification technology, applied in polyester coatings, antifouling/underwater coatings, coatings, etc., can solve the problems of water-based coatings that cannot be unified in appearance, hardness, and impact resistance, and achieve high hardness , The effect of improving the touch

Active Publication Date: 2019-10-15
GUANGDONG RITOP FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the existing water-based coatings still have the problem of inconsistent appearance, hardness and impact resistance.

Method used

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  • Fluorine silicon modified polyester acrylate aqueous dispersion, and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A fluorosilicon modified polyester acrylic acid aqueous dispersion, the preparation method is as follows:

[0032] Step 1: Synthesis of polyester intermediates, in a reaction kettle with temperature control, stirring and condenser, add 12.43g maleic anhydride, 186.78 isophthalic acid, 186.78 terephthalic acid, 347.43g neopentyl glycol , 128.54g adipic acid, 80.12g trimethylolpropane, 15.38g propylene glycol, add 0.97g dibutyltin dilaurate and slowly raise the temperature to 230°C until the acid value drops to about 5mgKOH / g, cool down to 125°C, add 128.64 g propylene glycol methyl ether acetate.

[0033] Step 2: Synthesis of silica sol, in a reaction kettle with temperature control, stirring and condenser, add 7.8g vinyltrimethoxysilane, 97.17g ethyl orthosilicate, 126.46g trimethoxysiloxane, 122.75g of absolute ethanol was heated up to 50°C, a mixture of 46.78g of deionized water and 3.6g of hydrochloric acid was added dropwise for 1.5h, and then kept for 8h.

[0034...

Embodiment 2

[0038] Step 1: Synthesis of polyester intermediates, in a reaction kettle with temperature control, stirring and condenser, add 7.28g maleic anhydride, 99.64 isophthalic acid, 147.08.g neopentyl glycol, 64.12g hexanedi Acid, 20.24g trimethylolpropane, 15.38g 1,4-butanediol, add 0.35g dibutyltin dilaurate and slowly raise the temperature to 230°C until the acid value drops to about 5mgKOH / g, cool down to 145°C, add 128.64 g ethylene glycol monobutyl ether.

[0039]Step 2: Synthesis of silica sol, in a reaction kettle with temperature control, stirring and condenser, add 7.8g vinyltrimethoxysilane, 97.17g ethyl orthosilicate, 126.46g trimethoxysiloxane, 122.75g of absolute ethanol was heated up to 50°C, a mixture of 46.78g of deionized water and 3.6g of hydrochloric acid was added dropwise for 1.5h, and then kept for 8h.

[0040] Step 3: Weigh 51.37g trifluoroethyl acrylate, 342.54g methyl methacrylate, 71.76g butyl acrylate, 342.54g styrene, 53.23g acrylic acid, 107.16g hydrox...

Embodiment 3

[0044] Step 1: Synthesis of polyester intermediates, in a reaction kettle with temperature control, stirring and condenser, add 17.78g maleic anhydride, 156.46 isophthalic acid, 156.46 terephthalic acid, 287.12g neopentyl glycol , 64.12g adipic acid, 40.48g trimethylolpropane, 15.38g 1,4-butanediol, add 0.72g dibutyltin dilaurate and slowly raise the temperature to 230°C until the acid value drops to about 5mgKOH / g, Cool down to 145°C, add 120.64g ethylene glycol monobutyl ether, 120.64g propylene glycol methyl ether acetate.

[0045] Step 2: Synthesis of silica sol, in a reaction kettle with temperature control, stirring and condenser, add 7.8g vinyltrimethoxysilane, 97.17g ethyl orthosilicate, 126.46g trimethoxysiloxane, 122.75g of absolute ethanol was heated up to 50°C, a mixture of 46.78g of deionized water and 3.6g of hydrochloric acid was added dropwise for 1.5h, and then kept for 8h.

[0046] Step 3: Weigh 71.37g trifluoroethyl acrylate, 242.54g methyl methacrylate, 71...

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Abstract

The invention belongs to the technical field of aqueous paint, and discloses a fluorine silicon modified polyester acrylate aqueous dispersion. The fluorine silicon modified polyester acrylate aqueousdispersion is prepared from, by weight, a polyester intermediate of 5 to 40%; a fluorine-containing acrylate monomer of 5 to 20%; another acrylic monomer of 30 to 60%; silica sol of 3 to 10%; amino resin of 20 to 40%; a solvent of 5 to 10%; an initiator of 1 to 5%; a catalyst of 0.1 to 0.5%, and a neutralizer of 3 to 6%, wherein the polyester intermediate is prepared from a polyol and a polyprotic acid through esterification, and the silica sol is prepared from an organosilicon monomer and an inorganic silicon monomer through sol gel method. The invention also discloses a preparation method of the fluorine silicon modified polyester acrylate aqueous dispersion. The fluorine silicon modified polyester acrylate aqueous dispersion possesses excellent appearance and handfeel, and excellent impact resistance, and the hardness is higher than 4H.

Description

technical field [0001] The invention relates to the technical field of water-based coatings, in particular to a fluorosilicon-modified polyester acrylic water dispersion and a preparation method thereof. Background technique [0002] Water-based coatings have the advantages of being environmentally friendly, low in price, and safe to use. [0003] The applicant Guangdong Huazibu New Material Technology Co., Ltd. applied for an invention patent CN201711148011.4 in 2017, which discloses an anti-aging water-based wood coating, and its raw materials are composed of the following components by weight: water-based hydroxyacrylic acid 30-50 parts of dispersion; 25-40 parts of water-based polyurethane resin emulsion; 11-35 parts of silica sol; 14-33 parts of inorganic compound; 10-25 parts of high-branched polyethyleneimine; ; 15-25 parts of adipic acid dihydrazide; 0.5-1 part of silane coupling agent; 5-10 parts of film-forming aid; 0.5-1 part of defoamer; -50 copies; it is recor...

Claims

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Application Information

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IPC IPC(8): C08F283/01C08F220/22C08F220/14C08F212/08C08F220/06C08F220/20C08F2/44C09D167/06C09D133/12C09D161/20C09D5/16C09D7/61
CPCC08F283/01C08F2/44C09D167/06C09D5/1687C08L2201/08C08F220/14C08L33/12C08L61/20C08K3/36
Inventor 杨胜廷陈林
Owner GUANGDONG RITOP FINE CHEM
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