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
2006-04-18
2006-04-18
Robertson, Jeffrey B. (Department: 1712)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S165000, C525S177000, C525S178000, C525S184000
Reexamination Certificate
active
07030190
ABSTRACT:
A thermoplastic resin composition material1includes a resin portion (a)2made of a thermoplastic resin (A); elastomer portions (b)3made of a thermoplastic elastomer (B) having substantially no compatibility with the thermoplastic resin (A) and having a glass transition temperature of lower than or equal to −40° C.; and polymer portions (c)4made of a high polymer (C) having substantially no compatibility with the thermoplastic resin (A) and the thermoplastic elastomer (B), having a glass transition temperature or crystallization temperature of lower than or equal to −50° C., and having a viscosity at 40° C. of 0.1 to 200000 cP. The material has a structure in which the elastomer portions (b)3are dispersed in the resin portion (a)2, and the polymer portions (c)4are dispersed in the elastomer portions (b)3.Accordingly, low-temperature impact resistance can significantly be improved without deterioration in the other inherent excellent physical properties of the thermoplastic resin.
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English Translation of JP 2000-063664, Machine translation from JPO web-site, Inaike et al. Feb. 2000.
English Translation of JP 2001-040191, Machine translation from JPO web-site, Katsumata Feb. 2001.
Arita Hiroaki
Wakita Naoki
Birch & Stewart Kolasch & Birch, LLP
Daicel-Degussa Ltd.
Robertson Jeffrey B.
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