Title:
INORGANIC MATERIAL-REINFORCED THERMOPLASTIC POLYESTER RESIN COMPOSITION AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2022/034845
Kind Code:
A1
Abstract:
The present invention is an inorganic material-reinforced thermoplastic polyester resin composition capable of yielding a molded article, i.e. a long thin-walled molded article, which has an excellent appearance while maintaining inherent mechanical characteristics, such as rigidity and impact resistance. The resin composition contains: 20-55 parts by mass of a poly(butylene terephthalate) resin (A); 1-30 parts by mass of a poly(ethylene terephthalate) resin (B); 3-30 parts by mass of a semi-crystalline resin and/or a non-crystalline resin (C); and 25-65 parts by mass of an inorganic reinforcing material (D). The number average fiber length Ln of the inorganic reinforcing material (D) in the resin composition is 100-500 μm. The resin composition exhibits excellent fluidity and has a descending temperature crystallization temperature that falls within a specific range.
Inventors:
SHIMIZU TAKAHIRO (JP)
AYUZAWA YOSHITAKA (JP)
AYUZAWA YOSHITAKA (JP)
Application Number:
PCT/JP2021/028997
Publication Date:
February 17, 2022
Filing Date:
August 04, 2021
Export Citation:
Assignee:
TOYO BOSEKI (JP)
International Classes:
C08K7/04; B29C48/00; C08K3/013; C08L67/03; C08L101/00
Domestic Patent References:
| WO2015008831A1 | 2015-01-22 | |||
| WO2019217680A1 | 2019-11-14 |
Foreign References:
| JP2008214558A | 2008-09-18 | |||
| JP2013159732A | 2013-08-19 | |||
| JP5396690B2 | 2014-01-22 |
Other References:
ZHANG ZHONGHOU, FENG LI, LI YADONG, WANG YINTAO, YAN CHUNMIAN: "Nonisothermal crystallization kinetics of poly(butylene terephthalate)/poly(ethylene terephthalate)/glass fiber composites", POLYMER COMPOSITES, SOCIETY OF PLASTICS ENGINEERS, INC., US, vol. 36, no. 3, 1 March 2015 (2015-03-01), US , pages 510 - 516, XP055908500, ISSN: 0272-8397, DOI: 10.1002/pc.22966
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