Thermoplastic elastomer composition and process for...

Details Thermoplastic elastomer composition and process for... Thermoplastic elastomer composition and process for...

2005-03-01

2005-03-01

Seidleck, James J (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S184000, C525S191000, C152S510000

Reexamination Certificate

active

06861470

ABSTRACT:
A thermoplastic elastomer composition dynamically vulcanized to a gelation rate of 50 to 95% which is superior in heat resistance and durability while maintaining flexibility and superior in air permeation preventive property which can be efficiently used as, for example, a pneumatic tire as an air permeation preventive layer. The method includes mixing a composition (C) mixed under conditions of a ratio of melt viscosities of the rubber composition (A)/resin (B) of 0.8 to 1.2 and the formula (φA/φB)×(ηB/ηA)<1.0 under conditions of a ratio of melt viscosities of the rubber composition (D)/composition (C) of 0.8 to 1.2 and the formula (φD/φC)×(ηC/ηD)<1.0, wherein φA: volume fraction of rubber composition (A), φB: volume fraction of resin (B), ηA: melt viscosity of rubber composition (A), ηB: melt viscosity of resin (B), φC: volume fraction of composition (C), φD: volume fraction of rubber composition (D), ηC: melt viscosity of composition (C), ηD: melt viscosity of rubber composition (D).

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CRC Press, “Nylon 6”, Ploymers-A Property Database, LLC, 2000.
CRC Press, “Nylon 11”, Polymers-A Property Database, LLC, 2000.

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