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
2005-01-04
2005-01-04
Lipman, Bernard (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S332900, C525S333100, C525S333200, C525S349000, C525S351000, C525S375000, C525S383000
Reexamination Certificate
active
06838526
ABSTRACT:
A novel modified conjugated diene polymer is obtained by polymerizing a conjugated diene compound with a specified catalyst consisting of components (a)-(c) and then reacting with at least one specified compound selected from the group consisting of components (d)-(l), and has a content of cis-1,4-bond of not less than 85% and a ratio of weight average molecular weight to number average molecular weight of not more than 4. And also, a rubber composition comprises the modified conjugated diene polymer a rubber ingredient.
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Akema Hiroshi
Hattori Iwakazu
Nakayama Atsushi
Sone Takuo
Tanaka Ryouji
Bridgestone Corporation
JSR Corporation
Lipman Bernard
Sughrue & Mion, PLLC
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