Patent ID: 6136929
Filing Date: 2000-10-24
Classification: C08G

Abstract:
An optical communications device, comprising:an essential optical material, said material comprising a copolymer comprising different repeating subunits represented by the formulas: ##STR6## where X.sub.1, X.sub.2, X.sub.3 and X.sub.4 are each independently selected from the group consisting of hydrogen, fluorine and chlorine; Y.sub.1 and Y.sub.2 are independently hydrogen or fluorine; Q.sub.1 and Q.sub.2 are independently hydrogen or chlorine; A is selected from the group consisting of --O--, --S--, --P(OR)--, --(CF.sub.2).sub.l --, --C(CF.sub.3).sub.2 --, --CO--, and --SO.sub.2 --; where R is selected from the group consisting of trifluoromethyl, trichloromethyl, pentafluorophenyl and pentachlorophenyl; l is an integer in the range of 1 to 8; m.sub.1 is 1 or 2; m.sub.2 is 0, 1 or 2; and n and k represent mole fractions of the repeating subunits, with 0.ltoreq.n.ltoreq.1, and n+k=1.