Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2011-01-11
2011-01-11
Teskin, Fred M (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S094000, C526S136000, C526S164000, C528S488000, C528S490000
Reexamination Certificate
active
07868103
ABSTRACT:
A method for producing a polybutadiene, which comprises subjecting 1,3-butadiene to cis-1,4 polymerization, and subsequently subjecting a resultant in the resulting polymerization system to syndiotactic-1,2 polymerization, the method being characterized in that there is added, after the polymerization, a halogen acid or halogen acid salt.
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Matsudaira Yuji
Murakami Masato
Shiba Koji
Suzuki Michinori
Edwards Angell Palmer & & Dodge LLP
Teskin Fred M
Ube Industries Ltd.
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