The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 26, 2019
Filed:
Oct. 25, 2017
Lg Chem, Ltd., Seoul, KR;
Bong Keun Ahn, Daejeon, KR;
Yong Yeon Hwang, Daejeon, KR;
Hyun Taek Oh, Daejeon, KR;
Min Jung Kim, Daejeon, KR;
Chun Ho Park, Daejeon, KR;
Eun Soo Kang, Daejeon, KR;
Yong Hee An, Daejeon, KR;
Jang Won Park, Daejeon, KR;
LG CHEM, LTD., Seoul, KR;
Abstract
The present invention relates to a method of preparing an ASA graft copolymer, a method of preparing a thermoplastic ASA resin composition including the same, and a method of preparing an ASA molded part, and more particularly, to a method of preparing a multilayered ASA graft copolymer including a step of preparing seeds, cores, and shells. According to the method, since a multifunctional carboxylic acid having 20 or more carbon atoms or a salt thereof is introduced as an emulsifier, the content of the emulsifier remaining in a resin may be reduced, thereby providing an ASA resin having excellent thermal stability and appearance characteristics while the inherent physical properties thereof, such as impact resistance and weather resistance, are maintained.