Title:
BIO-BASED POLYCARBONATE ESTER RESIN FOR EYEGLASS FRAME
Document Type and Number:
WIPO Patent Application WO/2020/013507
Kind Code:
A1
Abstract:
The present invention relates to a bio-based polycarbonate ester resin for an eyeglass frame, the resin being environment-friendly by not containing types of bisphenol, and exhibiting excellent heat resistance, transparency, strength, hardness, dimensional stability and chemical resistance. In addition, various colors may be painted and coated on during post-processing, a separate additive is not required during a molding process, and processing is undergone at a temperature lower than that for conventional plastic materials for an eyeglass frame, and thus manufacturing costs may be reduced.
Inventors:
OH KWANG SEI (KR)
LEE JONG-IN (KR)
LEE JONG-IN (KR)
Application Number:
PCT/KR2019/008053
Publication Date:
January 16, 2020
Filing Date:
July 02, 2019
Export Citation:
Assignee:
SK CHEMICALS CO LTD (KR)
International Classes:
C08G63/42; C08L67/03; G02C5/00
Foreign References:
| KR20160090703A | 2016-08-01 | |||
| CN104031249A | 2014-09-10 | |||
| KR20150012152A | 2015-02-03 | |||
| CN106800643A | 2017-06-06 |
Other References:
FENG, L.: "A designed synthetic strategy toward poly (isosorbide terephthalate) copolymers: a combination of temporary modification, transesterification, cyclization and polycondensation", POLYMER CHEMISTRY, 2015, pages 7470 - 7479, XP055586715, DOI: 10.1039/C5PY01167A
FENG, L.: "A high-molecular-weight and high-Tg poly(ester carbonate) partially based on isosorbide: synthesis and structure-property relationships", POLYMER CHEMISTRY, 2015, pages 633 - 642, XP055586726, DOI: 10.1039/C4PY00976B
See also references of EP 3822299A4
FENG, L.: "A high-molecular-weight and high-Tg poly(ester carbonate) partially based on isosorbide: synthesis and structure-property relationships", POLYMER CHEMISTRY, 2015, pages 633 - 642, XP055586726, DOI: 10.1039/C4PY00976B
See also references of EP 3822299A4
Attorney, Agent or Firm:
FIRSTLAW P.C. (KR)
Download PDF: