Patent ID: 6063828
Filing Date: 2000-05-16
Classification: C08F,H01L

Abstract:
A curable composition comprising a maleimide compound, and a curing initiator selected from the group consisting of a free-radical initiator, a photoinitiator, and a combination of those, the maleimide compound having the formula: ##STR20## in which n is 1 to 6 and (a) R.sup.1 is H or an alkyl group having 1 to 5 carbon atoms;(b) Ar is an aromatic group selected from the aromatic groups having the structures: ##STR21## (c) Q is a linear or branched chain alkyl, alkyloxy, alkyl amine, alkyl sulfide, alkylene, alkyleneoxy, alkylene amine, alkylene sulfide, aryl, aryloxy, or aryl sulfide species having up to about 100 atoms in the chain, which may contain saturated or unsaturated cyclic or heterocyclic substituents pendant from the chain or as part of the chain, and in which any heteroatom present may or may not be directly attached to Ar; orQ is a urethane having the structure: ##STR22## in which each R.sup.2 independently is an alkyl, aryl, or arylalkyl group having 1 to 18 carbon atoms; R.sup.3 is an alkyl or alkyloxy chain having up to 100 atoms in the chain, which chain may contain aryl substituents; X is O, S, N, or P; and v is 0 to 50; orQ is an ester having the structure: ##STR23## in which R.sup.3 is an alkyl or alkyloxy chain having up to 100 atoms in the chain, which chain may contain aryl substituents; orQ is a siloxane having the structure: --(CR.sup.1.sub.2).sub.e --(SiR.sup.4.sub.2 --O).sub.f --SiR.sup.4.sub.2 --(CR.sup.1.sub.2).sub.g -- in which the R.sup.1 substituent independently for each position is H or an alkyl group having 1 to 5 carbon atoms, and the R.sup.4 substituent independently for each position is an alkyl group having 1 to 5 carbon atoms or an aryl group, and e and g are independently 1 to 10 and f is 1 to 50.