Process for producing photosensitive resin

Details Process for producing photosensitive resin Process for producing photosensitive resin

1995-10-10

1997-07-15

Seidleck, James J.

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

Synthetic resins

From carboxylic acid or derivative thereof

528125, 528128, 528170, 528172, 528173, 528179, 528183, 528185, 528220, 528229, 528350, 525420, 525436, C08G 6926, C08G 7310

Patent

active

056484518

ABSTRACT:
A process for producing a photosensitive resin, comprises reacting a diamine with a tetracarboxylic acid tetraester represented by the formula (1) at a temperature of 0.degree. to 50.degree. C. in an aprotic polar solvent: ##STR1## wherein R.sub.1 is a tetravalent organic group; R.sub.2 is a group represented by the formula: ##STR2## in which R.sub.5 is a divalent to hexavalent organic group, R.sub.6 is H or CH.sub.3 and p is an integer of 1 to 5; R.sub.3 is a group represented by --OCH.sub.3, --OC.sub.2 H.sub.5, --OC.sub.3 H.sub.7 or the formula: ##STR3## and R.sub.4 is a group of the formula: ##STR4## the tetracarboxylic acid tetraester of the formula (1) is obtained by subjecting to addition reaction a tetracarboxylic dianhydride, an alcohol compound represented by the formula R.sub.2 H in which R.sub.2 is as defined above and an alcohol compound represented by the formula R.sub.3 H in which R.sub.3 is as defined above and thereafter subjecting the resulting addition reaction product to dehydration-condensation with 1-hydroxy-1,2,3-benzotriazole using a carbodiimide compound as a condensation agent.

REFERENCES:
patent: 3957512 (1976-05-01), Kleeberg et al.
patent: 4040831 (1977-08-01), Rubner et al.
patent: 4598038 (1986-07-01), Ahne
patent: 5262277 (1993-11-01), Sato et al.
patent: 5348835 (1994-09-01), Oba et al.
patent: 5518864 (1996-05-01), Oba et al.
"Preparation & Properties of Photosensitive Polyimides Using 1-Hydroxy benzotoriazole as a condensing agent", T. Banba pp. 93-94, International Symposium on Advanced Network-Polymers, Dec. 5-6, 1995.

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