Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing asa-based graft copolymer, method for preparing thermoplastic resin composition comprising same, and method for manufacturing molded product

A technique of graft copolymerization and graft polymerization, applied in nature, can solve the problems of reducing the thermal stability and surface properties of the resin, and achieve the effect of high yield

Active Publication Date: 2018-12-21
LG CHEM LTD
View PDF11 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the emulsifier remains in the latex and resin after polymerization, therefore, a large amount of gas is generated on the surface of the resin during high-temperature thermoforming, which reduces the thermal stability and surface properties of the resin

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing asa-based graft copolymer, method for preparing thermoplastic resin composition comprising same, and method for manufacturing molded product
  • Method for preparing asa-based graft copolymer, method for preparing thermoplastic resin composition comprising same, and method for manufacturing molded product
  • Method for preparing asa-based graft copolymer, method for preparing thermoplastic resin composition comprising same, and method for manufacturing molded product

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] The preparation method of ASA graft copolymer comprises: a) prepare by polymerizing one or more monomers and emulsifiers selected from aromatic vinyl monomers, vinyl cyano monomers and alkyl acrylate monomers a seed preparation step of a seed; b) a core preparation step of preparing a core encapsulating the seed by adding and polymerizing an alkyl acrylate monomer in the presence of the seed; A shell preparation step of adding an aromatic vinyl monomer, a vinyl cyano monomer and an emulsifier and performing graft polymerization to prepare a shell encapsulating the core, wherein the emulsifier in the shell preparation step includes 20 A polyfunctional carboxylic acid or salt thereof of up to 60 carbon atoms, and the average size of the shell is 250 nm to 750 nm (larger than the average size of the core).

[0025] Hereinafter, each step of the preparation method of the ASA graft copolymer of the present invention is described in detail.

[0026] a) Seed preparation steps...

Embodiment 1

[0108] 1. Preparation steps of aggregated seeds

[0109] With the butyl acrylate of 6 parts by weight, the sodium lauryl sulfate of 0.05 parts by weight, the ethylene glycol dimethacrylate of 0.04 parts by weight, the allyl methacrylate of 0.02 parts by weight, the hydroxide of 0.1 parts by weight Potassium and 45 parts by weight of distilled water were added to the nitrogen-substituted reactor at one time, the temperature was raised to 70° C., and 0.04 parts by weight of potassium persulfate was added to the reactor to initiate polymerization. Polymerization was then continued for 2 hours.

[0110] The average size of the rubbery polymer particles obtained after the reaction was complete was 150 nm.

[0111] 2. Polymeric core preparation steps

[0112] The butyl acrylate of 44 parts by weight, the sodium lauryl sulfate of 0.5 parts by weight, the ethylene glycol dimethacrylate of 0.2 parts by weight, the allyl methacrylate of 0.2 parts by weight, the distilled water of 30 p...

Embodiment 2

[0122] Except in the preparation step of the polymer graft shell in Example 1, using 0.4 parts by weight of FS200 (LG Household & Health Care), 0.7 parts by weight of sodium abietate, 0.02 parts by weight of TDDM and 0.05 parts by weight of cumulus hydroperoxide Emulsion of alkene, instead of the emulsion containing 0.8 parts by weight of mixed emulsifier FS200 (LG Household & Health Care), 0.02 parts by weight of tertiary dodecyl mercaptan (TDDM) and 0.05 parts by weight of cumene hydroperoxide, to be used with Experiments were carried out in the same manner as in Example 1.

[0123] The average size of the prepared graft copolymer latex was 385nm.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
sizeaaaaaaaaaa
Login to View More

Abstract

The present invention relates to a method for preparing an ASA-based graft copolymer, a thermoplastic resin composition comprising the same, and a method for manufacturing a molded product. More specifically, an emulsifier is injected in a specific amount range in a seed preparation step, and a multifunctional carboxylic acid of at least 20 carbon atoms or a salt thereof are introduced as an emulsifier in a shell preparation step such that the thermal stability of the ASA-based graft copolymer can improve, and provided is a high-quality thermoplastic resin composition containing the same, thereby having a greatly reduced amount of gas generation, which occurs on the surface of a resin during a high-temperature thermoforming process, while having excellent impact resistance with respect toimpact strength, tensile strength and the like, and an excellent exterior quality with respect to surface gloss, whiteness, thermal discoloration retention and the like.

Description

technical field [0001] [Cross Reference to Related Application] [0002] This application claims priority from Korean Patent Application No. 10-2017-0034357 filed in the Korean Intellectual Property Office on March 20, 2017, the disclosure of which is incorporated herein by reference. [0003] The present invention relates to a method for preparing an ASA graft copolymer, a method for preparing a thermoplastic resin composition comprising the ASA graft copolymer, and a method for manufacturing molded articles using the thermoplastic resin composition. More particularly, the present invention provides an ASA graft copolymer having improved thermal stability, exhibiting improved appearance characteristics such as coloring properties, surface gloss and High-quality thermoplastic resin composition retaining associated thermal discoloration and excellent weather resistance and impact resistance, and greatly reduced gas generation during high-temperature thermoforming, and method o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08F285/00C08L51/00C08L51/04C08L25/12C08F2/24C08K5/092
CPCC08F285/00C08K5/092C08L25/12C08L51/04C08F2/26C08F212/08C08F220/44C08L51/003C08F2/24C08L2207/53B29C45/0001B29K2096/02B29K2105/0085
Inventor 金珉静黄龙渊吴玄泽安凤根朴春浩姜恩洙安勇希朴壮洹
Owner LG CHEM LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com