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公开(公告)号：US4732952A
公开(公告)日：1988-03-22
申请号：US938296
申请日：1986-12-05
CPC分类号： C08G59/18 , C08G59/1466 , C08L63/00
摘要： A B stageable thermosettable composition containing at least one polyepoxide and at least one linear anhydride monomer capable of forming a cyclopolymer in situ and processes for the formation of the B stage intermediate and final thermoset having a high service temperature is provided. The composition is useful in a two stage process; first to form a storage stable, flowable thermoplastic B stage intermediate by the free radical initiated vinyl polymerization of the linear anhydride in the liquid composition to a cyclic polymer and secondly to react the cyclic polymer with the poly epoxide to form a crosslinked high service temperature thermoset useful in the preparation of laminates, such as printed circuit boards, adhesives, and encapsulants.
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公开(公告)号：US4946875A
公开(公告)日：1990-08-07
申请号：US294711
申请日：1989-01-09
CPC分类号： C08G59/18 , C08G59/1466 , C08L63/00
摘要： A B stageable thermosettable composition containing at least one polyepoxide and at least one linear anhydride monomer capable of forming a cyclopolymer in situ and processes for the formation of the B stage intermediate and final thermoset having a high service temperature is provided. The composition is useful in a two stage process; first to form a storage stable, flowable thermoplastic B stage intermediate by the free radical initiated vinyl polymerization of the linear anhydride in the liquid composition to a cyclic polymer and secondly to react the cyclic polymer with the poly epoxide to form a crosslinked high service temperature theremoset useful in the preparation of laminates, such as printed circuit boards, adhesives, and encapsulants.
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