Patent ID: 6034194
Filing Date: 2000-03-07
Classification: C07D,C08G

Abstract:
An adhesive composition consisting essentially of:(a) a liquid bismaleimide having the structure: ##STR5## wherein: each R is independently hydrogen or lower alkyl, and--X-- is:(1) saturated straight chain alkylene or branched chain alkylene, optionally containing saturated cyclic moieties as substituents on said alkylene chain or as part of the backbone of the alkylene chain, wherein said alkylene species have at least 6 carbon atoms,(2) aromatic bridging groups having the structure: ##STR6## wherein each Ar is a disubstituted or trisubstituted aromatic or heteroaromatic ring having in the range of 3 up to 10 carbon atoms, and Z is:(i) saturated straight chain alkylene or branched chain alkylene, optionally containing saturated cyclic moieties as substituents on said alkylene chain or as part of the backbone of the alkylene chain, wherein said alkylene species have at least 6 carbon atoms, or(ii) polyalkylene oxides having the structure:--[(CR.sub.2).sub.r --O--].sub.q --(CR.sub.2).sub.s --wherein each R is independently as defined above, r falls in the range of 1 up to 10, s falls in the range of 1 up to 10, and q falls in the range of 1 up to 50,(3) di- or tri-substituted aromatic moieties having the structure: ##STR7## wherein each R is independently as defined above, t falls in the range of 2 up to 10, u falls in the range of 2 up to 10, and Ar is as defined above(4) polyalkylene oxides having the structure:--[(CR.sub.2).sub.r --O--].sub.q --(CR.sub.2).sub.s --wherein each R is independently as defined above, and wherein each of r, s and q are as defined above, or(5) mixtures of any two or more thereof,(b) up to one equivalent of a divinyl compound per equivalent of bismaleimide, wherein said divinyl compound has the structure:CHR.dbd.CR--Q.sub.0,1 --Y--Q.sub.0,1 --CR.dbd.CHRwherein:each R is independently as defined above,each Q is independently --O--, --O--C(O)--, --C(O)-- or --C(O)O--, and--Y-- is:(1) saturated straight chain alkylene or branched chain alkylene, optionally containing saturated cyclic moieties as substituents on said alkylene chain or as part of the backbone of the alkylene chain, wherein said alkylene species have at least 6 carbon atoms,(2) di- or ti-substituted aromatic moieties having the structure: ##STR8## wherein each R is independently as defined above, Ar is as defined above, and each of t and u are as defined above,(3) polyalkylene oxides having the structure:--[(CR.sub.2).sub.r --O--].sub.q --(CR.sub.2).sub.s --wherein each R is independently as defined above, and wherein each of r, s and q are as defined above, or(4) mixtures of any two or more thereof,(c) in the range of 0.1 up to 10 wt % of at least one coupling agent, based on the total weight of the composition, and(d) in the range of 0.2 up to 3 wt % of at least one peroxide free radical initiator, based on the total weight of the composition.