Syndiotactic crystalline copolymers of propylene and 1-butene

Details Syndiotactic crystalline copolymers of propylene and 1-butene Syndiotactic crystalline copolymers of propylene and 1-butene

1991-06-26

1993-03-23

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526160, 526901, C08F21006, C08F 464

Patent

active

051964961

ABSTRACT:
Essentially syndiotactic crystalline copolymers of propylene with minor proportions of 1-butene, endowed with good mechanical properties, lowered melting point and limited solubility in xylene at 25.degree. C. and the process for their preparation by polymerizing mixtures of propylene with 1-butene, by using catalysts obtained form stereorigid and chiral zirconium and hafnium compounds and from polymethylalumoxane compounds.

REFERENCES:
patent: 4892851 (1990-01-01), Ewen et al.

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