Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1991-06-06
1993-01-05
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528125, 528126, 528179, 528188, 528223, 528229, 528337, 528348, 528351, 528373, C08G 6926
Patent
active
051771810
ABSTRACT:
Disclosed is an aromatic diamine having the general formula ##STR1## where A is a group containing at least one aromatic ring, each Y is independently selected from ##STR2## R is a group containing at least one olefinically unsaturated group, R' is hydrogen, alkyl to C.sub.25, aryl, or R, n is 1 to 4, and the number of olefinic groups in Y is at least 3 when each Y is ##STR3## and otherwise is at least 2. Photosensitive polyamic acids and polyimides can be prepared from the aromatic diamines which can be crosslinked with light to a mask to form patterns on a substrate.
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An article by Hurng-Rern Lee et al., Journal of Polymer Science: Part A: Polymer Chemistry, vol. 27, 1481-1497 (1989) "Synthesis, Characterization, and Kinetics Studies of Organic Soluble Photosensitive Copolyimide".
Chemical Abstract Registry No. compounds RN 93576-86-4, RN 84875-45-6, RN 84874-28-2, RN 81386-02-5.
Choi Jin-O
Rosenfeld Jerold
Tang David Y.
Tyrell John
Fuerle Richard D.
Jones Wayne A.
Kight III John
Occidental Chemical Corporation
Wright Shelley
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