Title:
NEW POLYETHER COPOLYMER AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JPH03265628
Kind Code:
A
Abstract:
PURPOSE:To obtain the title copolymer excellent in heat resistance and mechanical strengths by selecting the title copolymer comprising a plurality of specified repeating units and having a specified melt viscosity. CONSTITUTION:The title copolymer comprises repeating units of formula I (wherein Y is a group of any one of formulas II-IV or the like; and W is a group of formula V or VI or the like) and repeating units of formula VII (wherein Z is a group of any one of formulas VIII-IX) in a compositional molar ratio I/(I+II) of 0.1-0.9 and has a melt viscosity at 400 deg.C of 1000P or higher (e.g. a compound of formula X).
Inventors:
MATSUO SHIGERU
Application Number:
JP6268790A
Publication Date:
November 26, 1991
Filing Date:
March 15, 1990
Export Citation:
Assignee:
IDEMITSU KOSAN CO
International Classes:
C08G65/40; (IPC1-7): C08G65/40
Attorney, Agent or Firm:
Hotaka Tetsuo
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