Silicon-containing polyimide resin and silicon-containing polyam

Details Silicon-containing polyimide resin and silicon-containing polyam Silicon-containing polyimide resin and silicon-containing polyam

1998-12-21

1999-12-14

Hampton-Hightower, P.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From silicon reactant having at least one...

528 26, 528 38, 528172, 528173, 528170, 528179, 528183, 528185, 528220, 528229, 528350, 528353, C08G 7704

Patent

active

060019425

ABSTRACT:
The invention relates to a silicon-containing polyimide resin comprising (I) 0.1 to 100 mole % of structural units represented by the formula: ##STR1## where Ar.sup.1 is a tetra valent organic group having at least one aromatic ring, R independently represents a monovalent hydrocarbon group free of aliphatic unsaturated bonds, X is selected from an alkyleneoxyalkylene or an alkylene group having 2 or more carbon atoms, Y is an oxygen atom, an alkyleneoxyalkylene group, or an alkylene group having 2 or more carbon atoms, l, m, n are each integers having a value of 1 to 10, p is an integer having a value of 1 to 80, and a is 0 or 1; and (II) 99.9 to 0 mole % of structural units represented by the formula: ##STR2## where Ar.sup.2 is a tetravalent organic group having at least one aromatic ring, and Ar.sup.3 is a divalent organic group having at least one aromatic group.

REFERENCES:
patent: 4963635 (1990-10-01), Kunimune et al.
patent: 5252703 (1993-10-01), Nakajima et al.
patent: 5262506 (1993-11-01), Okawa et al.
patent: 5623026 (1997-04-01), Buekers et al.
patent: 5747625 (1998-05-01), Furukawa et al.
patent: 5866250 (1999-02-01), Oka et al.

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