Process for preparing propylene copolymers

Details Process for preparing propylene copolymers Process for preparing propylene copolymers

2006-05-02

2006-05-02

Choi, Ling-Sui (Department: 1713)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S124100, C526S124200, C526S124300, C526S348200, C526S335000, C526S336000

Reexamination Certificate

active

07038000

ABSTRACT:
There is provided a process for the copolymerisation of propylene with at least one C4-20α-olefin or C4-20diene in a reaction medium in the presence of a catalyst system at a temperature of greater that 80° C. or at a temperature and pressure above the critical temperature and pressure of the reaction medium. Under such conditions, comonmer incorporation is higher than under standard conditions.

REFERENCES:
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patent: 6084041 (2000-07-01), Andtsjo et al.
patent: 41 30 299 (1993-03-01), None
patent: 97/13790 (1997-04-01), None
patent: 98/58976 (1998-12-01), None
patent: WO 98/58976 (1998-12-01), None
patent: 99/29742 (1999-06-01), None

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