Abstract: Polymers and copolymers containing 1H-benzo[d]imidazol-2(3H)-one units have been synthesized under conditions generally used for the synthesis of poly(aryl ether)s. 1H- benzo[d]imidazol-2(3H)-one behaves like a biphenol in the polymerization reaction. The soluble homopolymer has a very high glass transition temperature (348° C.), good thermal stability, and forms flexible transparent films. Because of the low molecular weight (134.14) of the benzoimidazolone monomer in the copolymer formed with 4,4?-biphenol that contains 30 mole % of the benzimidazolone unit, only 8.9 weight % is required to raise the Tg of the poly(arlyl ether)sulfone from 220° C. to 269° C.

Abstract: Polymers and copolymers of formula I: in which m is typically 30 to 500 and n is 0 to 500; Ar is for example, 1,2-phenylene, 1,3-phenylene, 1,4-phenylene, or 2,6-pyridylene; Ar2 and Ar3 are selected from various bivalent aryl and heteroaryl groups; and X is for example, the bivalent SO2 or CO. have high temperature properties which make them useful as films, matrices in carbon fiber reinforced composites and high performance adhesives; processes for preparing the polymers and copolymers employ a novel C—N coupling reaction.

Abstract: Polymers and copolymers of formula I: in which m is typically 30 to 500 and n is 0 to 500; Ar is for example, 1,2-phenylene, 1,3-phenylene, 1,4-phenylene, or 2,6-pyridylene; Ar2 and Ar3 are selected from various bivalent aryl and heteroaryl groups; and X is for example, the bivalent SO2 or CO, have high temperature properties which make them useful as films, matrices in carbon fiber reinforced composites and high performance adhesives; processes for preparing the polymers and copolymers employ a novel C—N coupling reaction.