Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1998-02-10
2000-10-17
Wu, David W.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525183, 525198, 525391, C08L 2502, C08L 800, C08F 830, C08F28308
Patent
active
061333794
ABSTRACT:
The present invention relates to a method for producing a thermoplastic resin composition by melt mixing Thermoplastic Resin (A) with Thermoplastic Resins (B) and (C) having a lower melting temperature or glass transition point than Thermoplastic Resin (A) by 10.degree. C. or more. The method comprises feeding Thermoplastic Resin (A) containing volatile components having a molecular weight of 300 or less at an amount of 500 to 30,000 ppm and Thermoplastic Resin (B) containing fewer volatile components than Component A from a top supply port of a melt kneader, removing volatile components under reduced pressure, and feeding Thermoplastic Resin (C) from a side supply port. According to the present invention, it is possible to produce a thermoplastic resin composition which satisfies inconsistent properties, i.e., improved impact strength and fewer volatile components, while at the same time having advantages in energy consumption and operation.
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Asahi Kasei Kogyo Kabushiki Kaisha
Wu David W.
Zalukaeva Tanya
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