Process for producing propylene polymer

Details Process for producing propylene polymer Process for producing propylene polymer

1985-12-19

1988-01-05

Schofer, Joseph L.

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

Synthetic resins

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

525383, 526 84, C08F 800

Patent

active

047177551

ABSTRACT:
A process for producing a propylene polymer having a carbonyl group at the terminal, said process comprising polymerizing propylene to give a living propylene polymer in the presence of a catalyst composed of beta-diketone vanadium chelate and an aluminum compound represented by the formula R.sub.2 AlX (wherein R is a hydrocarbon group having 1 to 8 carbon atoms and X is a halogen atom), and reacting the living propylene polymer with a carbonylating agent.

REFERENCES:
patent: 3173903 (1965-03-01), Lukach et al.
patent: 3528958 (1970-09-01), Achorn
patent: 4234716 (1980-11-01), Cuypers et al.
patent: 4326048 (1982-04-01), Stevens et al.
patent: 4547555 (1985-10-01), Cook et al.
Yoshiharu Doi, Satoshi Ueki, and Tominaga Keii, "Preparation of `Living` Polypropylenes by a Soluble Vanadium-based Ziegler Catalyst", pp. 1359-1361.
Yoshiharu Doi, Satoshi Ueki, and Tominaga Keii, "`Living` Coordination Polymerization of Propene Initiated by the Soluble V(acac).sub.3 -Al(C.sub.2 H.sub.5).sub.2 Cl System", pp. 814-819.

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