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Cationic waterborne hydroxy acrylic resin dispersion and siloxane hydrate composition and metal corrosion-protecting paint thereof

A hydroxyacrylic acid, cationic technology, applied in the direction of anti-corrosion coatings, coatings, etc., can solve the problems of organosiloxane group hydrolysis, side reaction crosslinking curing degree, poor compatibility of the composition, etc., to achieve convenient operation and good Anti-corrosion and anti-rust performance, low cost effect

Inactive Publication Date: 2019-03-19
SHANGHAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of introducing organosiloxane groups into water-based acrylic coatings, the above method may lead to hydrolysis of organosiloxane groups or some side reactions, and the degree of crosslinking and curing is difficult to control, which eventually leads to the compatibility of the composition. Poor sex

Method used

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  • Cationic waterborne hydroxy acrylic resin dispersion and siloxane hydrate composition and metal corrosion-protecting paint thereof
  • Cationic waterborne hydroxy acrylic resin dispersion and siloxane hydrate composition and metal corrosion-protecting paint thereof
  • Cationic waterborne hydroxy acrylic resin dispersion and siloxane hydrate composition and metal corrosion-protecting paint thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The purpose of this example is to demonstrate the preparation of the composition of cationic waterborne hydroxyl acrylic resin dispersion and silicone hydrolyzate and its coating, as follows:

[0041] (1) Preparation of component A: Add 18g of ethylene glycol monobutyl ether, 18g of 100# solvent naphtha and 1g of di-tert-butyl peroxide into a reaction vessel, blow nitrogen gas, stir and heat up to 145°C, and keep warm for 15min; A mixture of 32g of methyl acrylate, 46g of n-butyl acrylate, 29.2g of hydroxyethyl methacrylate, 12.8g of styrene, 0.96g of α-methylstyrene dimer and 4.8g of di-tert-butyl peroxide was dropped at a constant speed Put it into the reaction container, control the dripping within 1.5h, and continue to keep warm for 10min; add 18g of methyl methacrylate, 26g of n-butyl acrylate, 16.8g of hydroxyethyl methacrylate, 7.2g of styrene, and dimethyl methacrylate A mixture of 12 g of amino ethyl ester and 3.2 g of di-tert-butyl peroxide was added to the re...

Embodiment 2～11

[0045] Comparative example 1, the composition of embodiment 2~11, coating formulation and paint film performance are shown in the following table:

[0046]

[0047]

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Abstract

The invention discloses a cationic waterborne hydroxy acrylic resin dispersion and siloxane hydrate composition and a metal corrosion-protecting paint thereof. The cationic waterborne hydroxy acrylicresin dispersion and siloxane hydrate composition is prepared by preparing a cationic waterborne hydroxy acrylic resin dispersion, namely, a component A through a double-solution free radical polymerization method, then preparing a siloxane hydrate, namely, a component B, and lastly, mixing the components at a solid weight ratio of 5:1-1:1. The cationic waterborne hydroxy acrylic resin dispersionand siloxane hydrate composition is applicable to the metal corrosion-protecting waterborne paint and can form a coating film with good adhesion, corrosion-protecting and anti-rust performance.

Description

technical field [0001] The invention relates to the field of water-based coatings, in particular to a composition of a cationic water-based hydroxyl acrylic resin dispersion and a siloxane hydrolyzate and a metal anti-corrosion coating. Background technique [0002] Organosiloxane modified waterborne acrylic coatings have good adhesion, weather resistance, stain resistance, thermal stability and salt spray resistance, etc., and have been widely used in weather resistance and anticorrosion of high-performance steel structures in recent years. [0003] The existing technologies for introducing organosiloxane into water-based acrylic coatings mainly include: ① introducing siloxane groups into acrylic resin through chemical modification methods such as graft condensation or addition copolymerization, such as US patents US5214095A and US5621038A; ②Introduce siloxane into the multifunctional curing agent first, and then crosslink the resin with the curing agent to introduce siloxa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/08C09D183/04C09D5/08
CPCC09D5/08C09D133/08C08L83/04
Inventor 胡和丰王炳强徐沈钧刘西振高菁菁朱康赵国栋孙莺
Owner SHANGHAI UNIV
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