Process for making elastomeric ethylene-alpha-olefin polymers wi

Details Process for making elastomeric ethylene-alpha-olefin polymers wi Process for making elastomeric ethylene-alpha-olefin polymers wi

1990-06-26

1993-02-16

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526129, 526144, 526153, 526156, 5261692, 526336, 526901, 526907, 502104, 502118, 502128, C08F 468, C08F 234

Patent

active

051872471

ABSTRACT:
An improved polymerization process for making essentially nonagglomerated ethylene polymers, especially EPR polymers, based on the use of a stage-modified high activity vanadium catalyst, under polymerization conditions that normally would yield an undesirable amount of agglomerated polymer.

REFERENCES:
patent: 4508842 (1985-04-01), Beran et al.
patent: 4559318 (1985-12-01), Smith et al.
patent: 4657997 (1987-04-01), Best
Carrick et al., JACS, vol. 82, p. 1502 (1960).
Karol et al., JACS, vol. 83, pp. 2654-2658 (1961).
Jacob et al., Z. anorg. allg. Chem., 427, pp. 75-84 (1976) (abstract).

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