Process for the preparation of heat-stable olefin polymers

Details Process for the preparation of heat-stable olefin polymers Process for the preparation of heat-stable olefin polymers

1989-06-21

1991-09-03

Hoke, Veronica P.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524100, 524101, 524102, 524126, 524151, 526204, C08K 55393, C08K 5524

Patent

active

050455770

ABSTRACT:
The addition of hindered amines in combination with a phosphorus-III-ester to the polymerization of olefins on spherical Ziegler-Natta catalysts effects a thermo-oxidative stabilization of the prepared polymers. Phenolic antioxidants may be used additionally.

REFERENCES:
patent: 4111835 (1978-09-01), Foschini et al.
patent: 4399054 (1983-08-01), Ferraris et al.
patent: 4824885 (1989-04-01), Magni et al.
patent: 4853426 (1989-08-01), Chatterjee
patent: 4879141 (1989-11-01), Chatterjee
patent: 4960593 (1990-10-01), Sevini et al.
Research Disclosure No. 112, 85-91 (Aug. 1973).
Chem. Abst. vol. 105, Abstract No. 134505p. (1986).

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