Title:
MANUFACTURE OF COMPOSITE BODY OF POLY-PARABANIC ACID FILM AND METALLIC SHEET
Document Type and Number:
Japanese Patent JPH01135633
Kind Code:
A
Abstract:
PURPOSE:To prevent curling, accompanied by the manufacture of a composite body, and improve the resistance to soldering as well as the dimensional stability of a manufactured composite, by employing copolymerized parabanic acid having specified combination of segments as the poly-parabanic acid. CONSTITUTION:Copolymerized parabanic acid, having the combination of segments indicated by general formulas (I), (II), is employed as polyparabanic acid(PPA). When either one of the segments (I), (II) is smaller in the number thereof in said copolymerized PPA, curl is generated upon preparing a substrate or the dimensional stability or a resistance to heat of the prepared substrate becomes insufficient, therefore, the mole ratio of segments (I)/segments (II) is preferably 1/9-9/1. The copolymerized PPA may be obtained by the hydrolysis of a polymerized body, obtained by reacting two kinds of diisocyanate with hydrocyanic acid.
Inventors:
SAKOTA KAZUYUKI
MINOSHIMA WATARU
IMAI KAZUHIRO
MINOSHIMA WATARU
IMAI KAZUHIRO
Application Number:
JP29397887A
Publication Date:
May 29, 1989
Filing Date:
November 24, 1987
Export Citation:
Assignee:
TOA NENRYO KOGYO KK
International Classes:
B32B15/088; B29C65/02; B32B15/08; H05K1/03; (IPC1-7): B29C65/02; B32B15/08; H05K1/03
Attorney, Agent or Firm:
Akira Uchida (3 outside)