Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2006-09-12
2006-09-12
Seidleck, James J. (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S245000, C525S314000, C526S158000, C526S335000, C526S351000
Reexamination Certificate
active
07105608
ABSTRACT:
The present invention provides a new copolymer of propylene and a conjugated diene having a carbon-carbon double bond in a side chain, wherein a molar ratio of a total of 1,2-adducts and 3,4-adducts to 1,4-adducts, derived from the conjugated diene, is 100:0. The copolymer is prepared in a process, characterized in that propylene and the conjugated diene are copolymerized in the presence of hydrogen, an organometallic compound comprising a transition metal selected from the group 4 of the periodic table, and at least one Lewis acid.
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Hagihara Hideaki
Hoang Ban The
Ishihara Takeshi
Shiono Takeshi
Tsuchihara Kenji
Asinovsky Olga
National Institute of Advanced Industrial Science and Technology
Seidleck James J.
Tonen Chemical Corporation
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