C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/550.1, 260/4
C07C 69/76 (2006.01) C07C 13/44 (2006.01) C07C 63/49 (2006.01) C07C 63/72 (2006.01) C08G 61/00 (2006.01)
Patent
CA 1260481
ABSTRACT The invention is a poly(arylcyclobutene) characterized by comprising 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 which contains (a) one or more heteroatoms comprising oxygen, sulfur, nitrogen or phosphorus or (2) one or more aromatic radicals. Preferred poly(arylcyclobutenes) correspond to the formula Image wherein B is a direct bond or bridging member which comprises (1) a polyvalent inorganic radical, or (2) a polyvalent organic radical containing (a) one or more heteroatoms comprising oxygen, sulfur, nitrogen, or phosphorus, or (b) one or more aromatic radicals; Ar is an aromatic radical which may be substituted; R is separately in each occurrence hydrogen or an electron-withdrawing or electron-donating substituent; m is an integer of 1 or more; and n is an integer of 2 or more, with the proviso that B can only be a direct bond wherein n is 2. These polymeric compositions are useful in films, as molded articles, in coatings, as adhesives, and in composites.
489404
Smart & Biggar
The Dow Chemical Company
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