摘要:
Copolymer compositions comprise, in polymerized form, a comonomer containing at least two polymerizable arylcyclobutane moieties, and a comonomer containing at least two polymerizable dienophilic moieties, such as maleimide moieties.
摘要:
The invention is a poly(arylcyclobutene) comprising arylcyclobutene moieties connected by a bridging member, wherein the bridging member is (a) a direct bond, (b) a polyvalent inorganic radical or (c) a polyvalent organic radical which contains (1) one or more heteroatoms comprising oxygen, sulfur, nitrogen or phosphorus or (2) one or more aromatic radicals, and wherein one or more cyclobutene rings are fused to one of the aryl rings.
摘要:
Copolymers of a mono(cyclobutarene) comonomer and a polymaleimide comonomer are described. These copolymers have higher thermal stability and lower water absorption than polymaleimide homopolymers. They are useful in applications such as electronics, membranes, composities, coatings, and adhesives. Examples of such copolymers are those formed from the comonomers 1,1'-(methylenedi-4,1-phenylene)bismaleimide, and 3-(1-(4-methylphenyl)ethenyl)-bicyclo(4.2.0)octa-1,3,5-triene or 3-(2-(4-methylphenyl)ethenyl)-bicyclo(4.2.0)octa-1,3,5-triene.
摘要:
The invention comprises cyclobutarene ketoaniline monomers and the process for preparing them. The monomers can be used to graft and/or endcap a monomer or polymer having at least 1 amino-reactive functionality. The grafted and/or endcapped monomer or polymer can subsequently be processed to prepare a highly crosslinked network. Said monomers have the formula: ##STR1## as a preferred embodiment.
摘要:
A catalytic amount of a finely divided copper salt catalyst is added to a monomer having at least one cyclobutarene group to lower the peak temperature of the polymerization oxotherm.
摘要:
The invention is a polymeric composition which comprises the reaction product prepared by exposing one or more poly(arylcyclobutenes) which comprise aryl moieties with one or more cyclobutene rings fused to each aryl moiety, wherein the aryl moieties are directly bonded to one another or are connected by a bridging member wherein the bridging member is (1) a polyvalent inorganic radical or (2) a polyvalent organic radical, to temperatures at which the poly(arylcyclobutenes) undergo polymerization.