Triblock copolymer tough resin latex and preparation method thereof

A technology of block copolymers and copolymers, applied in the field of triblock copolymer tough resin latex and preparation, can solve the problems of difficult multi-performance and high-performance requirements, achieve narrow molecular weight distribution, high monomer conversion rate, molecular weight Growth controllable effect

Pending Publication Date: 2022-03-04
HANGZHOU TRANSFAR FINE CHEM CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the development of non-woven fabric manufacturing technology, the diversification of fiber raw materials used and the increasing diversification of final products, the market also puts forward higher requirements for the finishing process of non-woven fabrics and the development of special finishing agents. The existing common polyacrylate emulsion products are difficult to meet the above multi-performance and high-performance requirements

Method used

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  • Triblock copolymer tough resin latex and preparation method thereof
  • Triblock copolymer tough resin latex and preparation method thereof
  • Triblock copolymer tough resin latex and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1.2 g of amphiphilic macromolecular reversible addition chain scission chain transfer reagent (1) was dissolved in 60 parts by weight of water, 9 g of styrene and 9 g of methyl methacrylate were added to the reactor as the first monomer, stirred and mixed, Nitrogen was blown until the air was completely replaced, and the temperature was raised to 80° C., then 0.03 g of a water-soluble initiator was added to initiate polymerization for 80 minutes, and then an aqueous solution containing 0.19 g of sodium hydroxide was added. After 1 hour, add 4g of ethyl acrylate as the second-stage monomer, polymerize for 0.6 hours, then add 9g of styrene and 9g of methyl methacrylate as the third-stage monomer, and polymerize for 2 hours to obtain a tri-block copolymer latex .

Embodiment 2

[0026] 1.2 g of amphiphilic macromolecular reversible addition chain scission chain transfer reagent (1) was dissolved in 60 parts by weight of water, 9 g of styrene and 9 g of methyl methacrylate were added to the reactor as the first monomer, stirred and mixed, Nitrogen was blown until the air was completely replaced, and the temperature was raised to 80° C., then 0.03 g of a water-soluble initiator was added to initiate polymerization for 80 minutes, and then an aqueous solution containing 0.19 g of sodium hydroxide was added. After 1 hour, add 8.8g of ethyl acrylate as the second-stage monomer, polymerize for 1 hour, then add 9g of styrene and 9g of methyl methacrylate as the third-stage monomer, and polymerize for 2 hours to obtain a tri-block copolymer latex.

Embodiment 3

[0028] 1.2 g of amphiphilic macromolecular reversible addition chain scission chain transfer reagent (1) was dissolved in 110 parts by weight of water, 4.5 g of styrene and 13.5 g of methyl methacrylate were added to the reactor as the first monomer, and stirred Mix, pass nitrogen until the air is completely replaced, heat up to 80° C., then add 0.03 g of water-soluble initiator, initiate polymerization for 80 minutes, then add an aqueous solution containing 0.19 g of sodium hydroxide. After 1 hour, add 15g of ethyl acrylate as the second-stage monomer, polymerize for 1.2 hours, then add 4.5g of styrene and 13.5g of methyl methacrylate as the third-stage monomer, and polymerize for 2 hours to obtain a tri-block copolymer object latex.

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Abstract

The invention discloses a triblock copolymer tough resin latex and a preparation method thereof. According to the resin latex, polyacrylate (PA) is used as a soft segment, and a random copolymer of styrene (St) and methyl methacrylate (MMA) is used as a hard segment. The method is simple in preparation process, environment-friendly and energy-saving, the adopted amphiphilic macromolecular RAFT reagent has the dual functions of a transfer reagent and an emulsifier, good control over monomer polymerization is achieved, and use of a traditional micromolecular emulsifier is avoided; the prepared polymer is high in elasticity modulus and elongation at break, and the thermoplastic material integrates toughness and rigidity and has great application value.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a triblock copolymer tough resin latex and a preparation method. Background technique [0002] As an important raw material, acrylic resin has been continuously expanded with the continuous development of preparation technology. Polyacrylate emulsions, usually acrylate or methacrylate polymers, the most commonly used acrylate monomers are methyl acrylate, ethyl acrylate, n-butyl acrylate and 2-ethylhexyl acrylate Esters, common methacrylates include methyl methacrylate, ethyl methacrylate, butyl methacrylate and esters containing higher alcohols. A series of coating film products can be prepared by using emulsion polymerization technology and processing methods. Because of their excellent water resistance, weather resistance and aging resistance, they are widely used in coatings, rubber, adhesives, inks, fabric coatings, nonwovens, etc. Cloth molding and other fields....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F293/00
CPCC08F293/005C08F2438/03
Inventor 罗英武陈八斤王小君于本成
Owner HANGZHOU TRANSFAR FINE CHEM CO LTD
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