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Preparation method of flame resistance core-shell type aqueous acrylic ester resin coating

A water-based acrylic and ester resin technology, used in fire-retardant coatings, coatings, etc., can solve the problem of halogen flame retardants burning large smoke and other problems, and achieve the effect of improving hot stickiness and cold brittleness

Active Publication Date: 2014-09-10
HEBEI CHENYANG INDAL & TRADE GROUP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, acrylate resins have the defects of hot stickiness, cold brittleness and flammability, which can be improved by core-shell polymerization. At present, acrylate resins are easy to burn and phosphorus-based flame retardants are used for flame retardancy, but phosphorus will Causes eutrophication of water quality, and the combustion of halogenated flame retardants releases a lot of smoke, and it will cause dioxin problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] (1) Add 50g of water, 0.33g of emulsifier sodium dodecylbenzenesulfonate and fatty alcohol polyoxyethylene ether (the type of fatty alcohol polyoxyethylene ether is OS-15, non-ionic type, purchased from Jiangsu Haian Petrochemical Plant, the same below) 0.17g, methacrylic acid 0.3g, raise the reaction temperature to 40°C, stir for 15min, add A monomer, and emulsify for 30min. When the temperature rises to 70°C, flow back water, and when the temperature reaches 75°C, start to drop 5.2g of potassium persulfate solution dissolved in 5g of water, dropwise for 1h, keep warm for 3h, add dodecyltriphenylphosphonium chloride 1g, stirring reaction time 1h, to obtain the core layer emulsion;

[0024] A monomer and its dosage: A monomer is composed of 6g of butyl acrylate, 4g of methyl methacrylate, 2.5g of ethyl acrylate, and 3g of diborene;

[0025] (2) Add B monomer and 5.3g of potassium persulfate solution dissolved in 5g of water to the core layer emulsion at the same time, ...

example 2

[0028] (1) Add 70g of water, 1.2g of emulsifier sodium dodecylbenzenesulfonate, 0.6g of fatty alcohol polyoxyethylene ether, and 3.0g of methacrylic acid into a three-necked flask, raise the reaction temperature to 40°C, and stir for 15 minutes. Add A monomer, emulsification time 45min. When the temperature rises to 70°C, flow back water, and when the temperature reaches 75°C, start to drop 5.4g of ammonium persulfate solution dissolved in 5g of water, dropwise for 3h, keep stirring for 5h, add dedecyltriphenylphosphonium bromide 3g, stirring reaction time 3h, to obtain the core layer emulsion;

[0029] A monomer and its dosage: A monomer is composed of 8g of butyl acrylate, 6g of methyl methacrylate, 3.5g of ethyl acrylate and 6g of diborene;

[0030] (2) Add monomer B and 5.5g of ammonium persulfate solution dissolved in 5g of water dropwise to the core layer emulsion at the same time, dropwise for 3h, keep warm at 85°C for 2h, add 20g of m-carborane dropwise, keep warm and...

example 3

[0033] (1) Add 60g of water, 0.8g of emulsifier sodium dodecylbenzenesulfonate, 0.4g of fatty alcohol polyoxyethylene ether, and 1.7g of methacrylic acid into a three-necked flask, raise the reaction temperature to 40°C, and stir for 15 minutes. Add A monomer, and the emulsification time is 35min. When the temperature rises to 70°C, flow back water, and when the temperature reaches 75°C, dissolve 5.3g of potassium persulfate solution in 5g of water, add dropwise for 2h, keep stirring for 4h, add 2g of dodecyltriphenylphosphonium chloride, Stirring reaction time 2h, obtain core layer emulsion;

[0034] A monomer and its dosage: A monomer is composed of 7g of butyl acrylate, 5g of methyl methacrylate, 3.0g of ethyl acrylate and 4.5g of diborene;

[0035] (2) Add monomer B and 5.4g of potassium persulfate solution dissolved in 5g of water to the core emulsion at the same time, add dropwise for 2h, keep warm at 80°C for 2h, add 15g of triphenylborane dropwise, keep stirring Reac...

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Abstract

The invention relates to a preparation method of a flame resistance core-shell type aqueous acrylic ester resin coating. Water, emulsifiers, methacrylic acid and a monomer A are added and emulsified, an initiator starts to be added dropwise for 1-3 hours when the temperature is 75 DEG C, reaction is carried out for 3-5 hours with the temperature kept at 75 DEG C, quaternary phosphonium salt is added to react for 1-3 hours, and core layer emulsion is obtained; a monomer B and an initiator are added into the core layer emulsion dropwise for 1-3 hours at the same time and react for 2 hours with the temperature kept at 75-85 DEG C, borane is added dropwise, reaction is carried out for 1-3 hours with the temperature kept at 75-85 DEG C, then cross-linking agents are added dropwise, reaction is carried out for 1-2 hours with the temperature kept at 75-85 DEG C, the temperature is decreased to be 50 DEG C, an emulsifier is added into a reaction system, the reaction time is 30 minutes, ammonium hydroxide is added to adjust the pH value to be 7-8, and the flame resistance core-shell type aqueous acrylic ester resin coating is obtained. The flame resistance of obtained flame resistance core-shell type aqueous acrylic ester resin can be greatly improved, and the defect that traditional acrylic ester resin is sticky at high temperature and crisp at low temperature is also overcome.

Description

technical field [0001] The invention relates to a preparation method of water-based acrylic resin, in particular to a preparation method of flame-retardant core-shell type water-based acrylic resin coating. Background technique [0002] Compared with traditional solvent-based coatings, water-based coatings have the advantages of low price, safe use, saving resources and energy, and reducing environmental pollution and public nuisance, so it has become the main direction of the current development of the coatings industry. Water-based acrylic resin coatings are the fastest-growing and most diverse non-polluting coatings among water-based coatings. [0003] Water-based acrylic resins include acrylic resin emulsions, acrylic resin aqueous dispersions (also known as water-dilutable acrylic acid) and acrylic resin aqueous solutions. Emulsions are mainly synthesized by emulsifying oily ethylenic monomers in water under the initiation of water-based free radical initiators, while ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/08C09D5/18C08F220/18C08F220/14C08F212/08C08F220/06
Inventor 段宝荣
Owner HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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