Method of olefin polymerization utilizing hydrogen pulsing, prod

Details Method of olefin polymerization utilizing hydrogen pulsing, prod Method of olefin polymerization utilizing hydrogen pulsing, prod

1998-01-06

2000-12-05

Wu, David W.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 79, 526160, 526943, 526106, C08J 1006

Patent

active

061568546

ABSTRACT:
An olefin polymerization process in which at least two introductions of hydrogen are made during the olefin polymerization reaction. Suitable catalysts include metallocenes of the general formula (Cp).sub.m TiX.sub.n, wherein Cp is a substituted or unsubstituted cyclopentadienyl ring, X is a halogen, m=1-2, n=2-3, and wherein m+n=4, and conventional Ziegler-Natta catalysts blended with or modified by such metallocenes.

REFERENCES:
patent: 3472829 (1969-10-01), Claybaugh et al.
patent: 3922322 (1975-11-01), Roger et al.
patent: 4659685 (1987-04-01), Coleman, III et al.
patent: 4939217 (1990-07-01), Stricklen
patent: 5739220 (1998-04-01), Shamshoum et al.

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