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
2007-10-09
2007-10-09
Teskin, Fred (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...
C525S194000, C525S331900, C525S333200, C525S342000, C525S343000, C525S374000, C525S384000, C525S385000, C525S386000
Reexamination Certificate
active
10542911
ABSTRACT:
A main object of the invention is to provide a polar-group-containing cyclized rubber making it possible to improve remarkable the adhesiveness between paint and a molded product made of a nonpolar polymer such as polypropylene or polyethylene, and a process for producing the same. In order to attain the object, the invention provides a polar-group-containing cyclized rubber which has a polar group at a terminal of a polymer chain thereof, has a weight-average molecular weight of 1000 to 1,000,000, and is obtained by cyclizing a conjugated diene polymer having the polar group at a terminal of a polymer chain thereof.
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English Language translation of JP 57-145103; publication date: Sep. 8, 1982.
Kase Toshio
Kitahara Shizuo
Birch & Stewart Kolasch & Birch, LLP
Teskin Fred
Zeon Corporation
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