Invention Grant
- Patent Title: Liquid-crystal polyester resin
- Patent Title (中): 液晶聚酯树脂
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Application No.: US10496490Application Date: 2002-11-25
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Publication No.: US06984712B2Publication Date: 2006-01-10
- Inventor: Ryuzo Ueno , Masaya Kitayama , Kiichi Kometani , Hiroyuki Kato , Kazunori Ueda
- Applicant: Ryuzo Ueno , Masaya Kitayama , Kiichi Kometani , Hiroyuki Kato , Kazunori Ueda
- Applicant Address: JP Osaka
- Assignee: Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo
- Current Assignee: Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo
- Current Assignee Address: JP Osaka
- Agency: Sughrue Mion, PLLC
- Priority: JP2001-359350 20011126
- International Application: PCT/JP02/12257 WO 20021125
- International Announcement: WO03/046043 WO 20030605
- Main IPC: C08G63/06
- IPC: C08G63/06 ; C08F20/00 ; C09K19/32
Abstract:
The present invention provides a liquid-crystalline polyester resin which comprises monomer units derived from 2-hydroxy-3-naphthoic acid and/or 2-hydroxynaphthalene-3,6-dicarboxylic acid in an amount of 1-5000 mmol % based on the total monomer components of the resin and an alkaline metal compound in an amount of 10-3000 ppm as alkaline metal based on the total monomer components of the resin. The liquid-crystalline polyester resin of the present invention has good colorability, improved heat resistance and good mechanical properties.
Public/Granted literature
- US20050054811A1 Liquid-crystal polyester resin Public/Granted day:2005-03-10
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