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
2005-08-16
2005-08-16
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...
C525S130000, C525S177000, C525S199000, C525S227000, C525S232000, C525S235000, C525S237000, C525S914000
Reexamination Certificate
active
06930146
ABSTRACT:
A polymer composition and a thermoplastic elastomer composition containing 1,2-polybutadiene having a 1,2-bond content in the butadiene unit of 70% by weight or more, a melting point in the range of 50 to 140° C., a total halogen content of 30 ppm or less, a viscosity η in the range of 400 to 1200 poise when measured with a slit die rheometer at a shear rate of 5113 sec−1at 120° C., a viscosity η in the range of 300 to 1000 poise when measured with a slit die rheometer at a shear rate of 5113 sec−1at 150° C., and a viscosity η in the range of 200 to 800 poise when measured with a slit die rheometer at a shear rate of 5113 sec−1at 180° C. exhibit excellent moldability, visual appearance and scratch resistance.
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Kojina Junji
Okada Koji
Suzuki Masato
JSR Corporation
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Teskin Fred
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