Process for polymerizing olefins

Details Process for polymerizing olefins Process for polymerizing olefins

1978-10-23

1980-11-04

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252429B, 526124, 526125, 526144, 526348, 526352, 526901, C08F 234, C08F 402, C08F 1002

Patent

active

042321409

ABSTRACT:
Trichlorofluoromethane is used as a promoter in the polymerization and copolymerization of ethylene with supported Ziegler-type vanadium compound/alkylaluminum compound catalysts in the presence of hydrogen. The use of the promoter leads to the formation of non-rubbery, semi-crystalline polymers in high yields, does not alter the basic molecular weight distribution of the polymers, permits independent control of molecular weight by hydrogen, and imparts no significant level of halogen to the product.

REFERENCES:
patent: 3051690 (1962-08-01), Vandengerg
patent: 3301834 (1967-01-01), Christman
patent: 3349064 (1967-10-01), Gumboldt et al.
patent: 3354139 (1967-11-01), Vandengerg
patent: 3622548 (1971-11-01), Emde et al.
patent: 3718635 (1973-02-01), Tomoshige et al.
patent: 3772261 (1973-11-01), Faltings et al.
patent: 3784539 (1974-01-01), Ort
patent: 3956255 (1976-05-01), Ort
Christman, Journal of Polymer Science, Part A-1, vol. 10, pp. 471-487 (1972).
Gumbaldt et al., Die Makromolekulare Chemie, 101, (1967) pp. 229-245 (1967).

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