Block copolymer of propylene and a process for the production th

Details Block copolymer of propylene and a process for the production th Block copolymer of propylene and a process for the production th

1990-10-17

1992-01-14

Bleutge, John C.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525268, 525323, 525324, 525478, 525479, C08F29708, C08F 3008, C08F27500

Patent

active

050811908

ABSTRACT:
The invention relates to a block copolymer of propylene and a process for preparing the same comprising (a) polymerizing propylene or .alpha.-olefins mainly comprising propylene in the presence of a catalyst comprising a transition metal catalyst and an organometal compound; (b) copolymerizing .alpha.-olefins mainly comprising propylene and ethylene, wherein in at least one of steps (a) and (b) copolymerization is carried out with an alkenylsilane compound.

REFERENCES:
patent: 3223686 (1965-12-01), Natta et al.

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