Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2008-07-01
2008-07-01
Choi, Ling-Siu (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S124200, C526S124300, C502S103000, C502S115000, C502S127000
Reexamination Certificate
active
10569245
ABSTRACT:
A process for the polymerization of olefin monomers comprising contacting ethylene or a mixture of ethylene and one or more C4-8α olefins with a catalyst composition comprising one or more Group 3-10 transition metal containing, Ziegler-Natta, procatalyst compounds; one or more alkylaluminum cocatalyts; and one or more polymerization control agents, said process being characterized in that at least one such polymerization control agent is an alkyl or aryl, ester of an aliphatic or aromatic (poly)carboxylic acid optionally containing one or more substituents comprising a Group 13, 14, 15, or 16 heteroatom.
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Campbell, Jr. Richard E.
Chen Lin-feng
Painter Roger B.
Reib Robert N.
Tilston Michael W.
Choi Ling-Siu
Dow Global Technologies Inc.
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