Title:
RESIN-MADE PIPE
Document Type and Number:
WIPO Patent Application WO/2022/107859
Kind Code:
A1
Abstract:
A resin-made pipe formed using as a material a liquid crystalline polyester resin composition, and comprising a curved portion, wherein the melt viscosity of the liquid crystalline polyester resin composition satisfies formula (A), and the arithmetic mean roughness (Ra) of the inner surface of the pipe in the extending direction thereof is 0.2-5 μm. (A): B/A≤10 (A represents the melt viscosity at 20°C + the flow initiation temperature of the liquid crystalline polyester resin composition. B represents the melt viscosity at the flow initiation temperature of the liquid crystalline polyester resin composition.)
Inventors:
SAKAI TAIGA (JP)
Application Number:
PCT/JP2021/042486
Publication Date:
May 27, 2022
Filing Date:
November 18, 2021
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
B29C45/37; C08G63/60; C08L67/00; F16L11/06; F16L43/00
Foreign References:
| JPH07156210A | 1995-06-20 | |||
| JP2000063503A | 2000-02-29 | |||
| JP2013056481A | 2013-03-28 | |||
| JPH08229992A | 1996-09-10 | |||
| US20120015066A1 | 2012-01-19 | |||
| JP2020191506A | 2020-11-26 | |||
| JP2009281636A | 2009-12-03 |
Other References:
"Liquid Crystal Polymers - Synthesis/Molding/Application", 5 June 1987, CMC PUBLISHING CO., LTD, pages: 95
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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