Patent ID: 6307008
Filing Date: 2001-10-23
Classification: C09J,Y10S

Abstract:
A polyamic acid for an adhesive, represented by the following Formula: ##STR15##wherein, R is a tetravalent organic group selected from the group consisting of: ##STR16##R1 is a divalent organic group selected from the group consisting of: ##STR17## ##STR18##R2 is a trivalent or tetravalent organic group selected from the group consisting of: ##STR19##R3 is a divalent organic group represented by the following formula: ##STR20##wherein, R4 is an alkylene group containing 1-20 carbon atoms and n' is the number of a recurring unit; and l, m and n each are molar numbers of the corresponding recurring units under the condition that l/(m+n) ranges from 99.985/0.015 to 80/15 as expressed in terms of molar ratio and m/(l+n) is from 1/2000 to 500/1 as expressed in terms of molar ratio.