Process for preparing thermoplastic transparent resin

A transparent resin, thermoplastic technology, applied in the field of preparation of thermoplastic transparent resin, can solve the problems of lack of impact resistance, restriction, product discoloration yellow, etc.

Inactive Publication Date: 2002-10-02
LG CHEM LTD
View PDF5 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method does not have good impact resistance at low temperatures, and it is limited in producing particularly good transparent resins
[0012] In addition, when the above-mentioned technology is applied to products such as transparent windows of washing machines (which are in contact with water in large quantities), there are also poor moisture resistance and heat resistance, and these products are discolored into milky white under the action of hot water. problems, as well as product discoloration to yellow due to residual emulsifiers and coagulants left in the finished product

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] 1) Preparation of grafted transparent resin

[0058] a) Preparation of rubber latex with small diameter particles

[0059] In the polymerization reactor (autoclave) replaced with nitrogen by gap method, add 110 parts by weight of ion-exchanged water, 100 parts by weight of 1,3-butadiene as monomer, 1.2 parts by weight of emulsifier potassium abietate and 1.5 parts by weight Potassium oleate is used as emulsifier, 0.1 weight part sodium carbonate and 0.5 weight part potassium bicarbonate as electrolyte, and 0.3 weight part tertiary dodecyl mercaptan (TDDM) is as molecular weight control agent, and improves reaction temperature to 55 ℃, to 0.3 parts by weight of potassium persulfate was added to the reactant as an initiator to initiate the reaction. After reacting for 10 hours, 0.05 parts by weight of t-dodecylmercaptan was added to the reactant again and reacted at a temperature of 65° C. for 8 hours, thereby terminating the reaction. However, the obtained rubber latex...

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
particle sizeaaaaaaaaaa
particle diameteraaaaaaaaaa
gel fractionaaaaaaaaaa
Login to view more

Abstract

The present invention relates to a method for preparing a thermoplastic transparent resin, and provides a method for preparing a thermoplastic transparent resin, comprising the following steps: i) grafting a latex comprising 20-50 parts by weight of a conjugated diene rubber by emulsion polymerization , 10-50 parts by weight of an alkyl methacrylate compound or an alkyl acrylate compound, 5-25 parts by weight of an aromatic vinyl compound, and a monomer mixture of 1-10 parts by weight of a vinyl cyanide compound; ii) in During bulk polymerization, methyl methacrylate is prepared by copolymerizing 50-75 parts by weight of an alkyl methacrylate compound or an alkyl ester compound, 20-45 parts by weight of an aromatic vinyl compound, and 1-10 parts by weight of a vinyl cyanide compound. an ester-styrene-acrylonitrile (MSAN) copolymer; and iii) blending the grafted transparent resin of step i) and the MSAN copolymer of step ii. The thermoplastic resin prepared by the method of the present invention has excellent impact resistance, chemical resistance, processability, excellent moisture resistance and heat resistance, natural color, etc., and extremely excellent transparency.

Description

[0001] Cross References to Related Applications [0002] This application is based on Application No. 10-2000-0038651 filed with the Korean Industrial Property Office on July 6, 2000, the contents of which are incorporated herein by reference. Background of the invention [0003] (a) Field of Invention [0004] The present invention relates to a method for preparing a thermoplastic transparent resin, and more particularly to a method for preparing a thermoplastic transparent resin having moisture resistance, impact resistance and heat resistance, natural color and excellent properties, the thermoplastic transparent resin being prepared by the following method: After the transparent resin was grafted and a methyl methacrylate-styrene-acrylonitrile (hereinafter referred to as "MSAN") copolymer was prepared by bulk polymerization, the former was blended with the latter. [0005] (b) Description of related technologies [0006]...

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): C08F279/02C08F279/04C08L33/06C08L51/04C08L55/02
CPCC08F279/02C08F279/04C08L51/04C08L55/02C08L2666/02C08L2666/24
Inventor 俞根勋崔正洙金成姬李灿弘
Owner LG CHEM LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap