Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2005-09-06
2005-09-06
Cheung, William K. (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S335000, C526S348700
Reexamination Certificate
active
06939933
ABSTRACT:
The invention relates to a new catalyst system that improves the heat transfer capability of a butyl reactor slurry process system in the production of random copolymers of one or more isoolefin monomers and one or more conjugated diene monomers in continuous slurry polymerization processes. The process is carried out in an anhydrous polymerization system containing a mixture of the monomers in a polar diluent along with a Lewis acid and a C5or greater initiator having a tertiary halide.
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Chung David Y.
Donnalley Andrew B.
McDonald Michael F.
Powers Kenneth W.
Schatz Ralph Howard
Arechederra Leandro
Cheung William K.
ExxonMobil Chemical Patents Inc.
Faulkner Kevin M.
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