C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 67/00 (2006.01) C08G 73/18 (2006.01) C08G 73/22 (2006.01)
Patent
CA 2070269
PREPARATION OF POLY(BENZ(OX, IMID, THI)AZOLE) POLYMERS ABSTRACT A method for the preparation of poly(benzoxazole)s, poly(benzimidazole)s, and poly(benzthiazole)s. In the presence of solvent and catalyst, reacting carbon monoxide, an aromatic halide reactant having the general formula X1-Ar1-Z1 and an aromatic amine reactant having the general formula Z2-Ar2- M1, wherein X1 and Z1 are non-ortho, Z2 and M1 are non- ortho, one of Z1 and Z2 is X2 and the other one is M2, -Ar1- and -Ar2- are each independently selected from the group consisting of aromatic and hetero-aromatic moieties having a total of ring carbons and heteroatoms of from 6 to about 20, X1 and X2 are each independently selected from the group consisting of -I and -Br, and M1 and M2 are each independently selected from moieties having an -NH2 radical and, ortho to the -NH2 radical, a radical selected from the group consisting of -NH2, -OH, and -SH. Polymers of the classes: poly(benzoxazole), poly(benzimidazole), and poly(benzthiazole) are used in composites and laminates and as high strength fibers and films possessing good thermal and oxidative stability.
Eastman Chemical Company
Gowling Lafleur Henderson Llp
Perry Robert J.
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