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
2008-07-01
2008-07-01
Gulakowski, Randy (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S098000, C525S314000, C525S316000
Reexamination Certificate
active
10566372
ABSTRACT:
To provide a block copolymer composition having a good balance in transparency and impact resistance, and particularly having an excellent impact resistance, by making a molded product of injection molding under high sear condition in such a manner as to hardly generate anisotropy. A block copolymer composed of a hard segment block comprising a block made mainly of a vinyl aromatic hydrocarbon and a soft segment block comprising a block made mainly of a conjugated diene, characterized by having a remarkably improved impact resistance without degrading transparency in respect of not only an extrusion-molded product and a blow-molded product but also an injection-molded product, by blending two kinds of block copolymers having a hard segment block of a specific structure.
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Kurimura Hiroyuki
Oda Takeshi
Shimizu Norihiro
Suzuki Shigeru
Watanabe Jun
Asinovsky Olga
Denki Kagaku Kogyo Kabushiki Kaisha
Gulakowski Randy
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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