ARYLSTYRENE POLYMER AND COPOLYMER AND PROCESS FOR PREPARING THE SAME.

摘要

An arylstyrene type polymer having a polymerisation deg. of at least 5 and a stereoregularity which is mainly a syndiotactic structure, comprises repeating units of formula (I). In (I) R1-R5 = a substit. contg. H, halogen of gps(s). from C, O, N, S, P, Se, Si, or Sn; or at least one of R1-R5 is an aryl gp. contg. above atom(s) as substit(s). Also claimed are: (A) prepn. of aryl styrene type polymer by polymerising arylstyrene of formula (II) in the presence of a catalyst obtd. by contacting transition metal and organoaluminium with a condensing agent; (B) an arylstyrene copolymer having repeating unit of formula (III) and (IV) (provided (III) and (IV) are not the same); where (IV) is present at 0.1-20 mol.% in the copolymer, (R6 = R7 = a substit. contg. at least one from H, halogen, C, O, N, S, P, Se, Si and Sn; m = 0-5; where m is more than 1, R6 can be different; n = 1-5; and n R7's, at least one is an aryl gp. contg. above mentioned atom(s) as susbtit.). and (C) prepn. of (B) by polymerising monomer of formula (V) and a monomer of formula (VI) in the presence of the catalyst mentioned above, (V) and (VI) being different monomers.