Crystalline isotactic poly(para-methylstyrene)

Details Crystalline isotactic poly(para-methylstyrene) Crystalline isotactic poly(para-methylstyrene)

1985-10-07

1988-06-07

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C08F 1212

Patent

active

047497637

ABSTRACT:
Crystalline isotactic poly(para-methylstyrene) previously unreported in the literature is prepared by polymerizing para-methylstyrene with a TiCl.sub.3 /aluminum alkyl catalyst and fractionating the product to obtain a crystalline fraction with a crystalline melting point of 205.degree. C.

REFERENCES:
patent: 3014887 (1961-12-01), Haward
patent: 4230836 (1980-10-01), Canterino
patent: 4306049 (1981-12-01), Prapas
Natta et al, Makromol Chemie 28,253 (1958) reprinted in Natta and Danusso, "Stereoregular Polymers, and Stereospecific Polymerizations", Pergammon Press Ltd., London, 1967, vol. 2, p. 570.

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