Patent ID: 7018718
Filing Date: 2006-03-28
Classification: C08G,C08L,C09J,H01L,Y10T

Abstract:
1. An adhesive film for underfill comprising a polycarbodiimide copolymer which comprises at least one structural unit selected from rubber residues represented by the following formulae (1) and (2) in a number “m”: (wherein each of a, b and c is an integer of from 0 to 200, and X represents an alkylene group having from 0 to 5 carbon atoms) and a structural unit represented by the following formula (3) in a number “n”: (wherein R means an alkyl group having from 4 to 20 carbon atoms or an aryl group) and which comprises on each of the both termini a terminal structural unit derived from a monoisocyanate, wherein m is an integer of 2 or more, n is an integer of 1 or more, m+n is from 3 to 1,500 and m/(m+n) is from 1/1,500 to 1/3.