Thermoplastic elastomer based on polynorbornene and polyvinyl ch

Details Thermoplastic elastomer based on polynorbornene and polyvinyl ch Thermoplastic elastomer based on polynorbornene and polyvinyl ch

1991-09-09

1994-05-17

Michl, Paul R.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524296, 524502, 524515, 524518, 525210, C08J 318, C08L 2320

Patent

active

053128567

ABSTRACT:
This composition comprises a mixture of 20 to 70 parts by weight of polynorbornene, crosslinked or uncrosslinked, 80 to 30 parts by weight of a polymer based on vinyl chloride and of at least one plasticiser customary for polynorbornene and the polymer based on vinyl chloride in an amount sufficient for reducing the glass-transition temperature of polynorbornene down to the range of rubbers. To prepare the thermoplastic composition comprising crosslinked polynorbornene, a mixture of polynorbornene, a polymer based on vinyl chloride, a plasticiser customary for polynorbornene and the polymer based on vinyl chloride and a crosslinking system is kneaded at a temperature sufficiently high and during a period sufficiently long for crosslinking polynorbornene.
Applications: Manufacture of flexible tubes, seals for the construction and automobile industries, protective bellows for the automobile industry, injection-moulded articles, such as solid wheels for the toy industry, and the like.

REFERENCES:
patent: 4203884 (1980-05-01), Coran et al.
patent: 4329270 (1982-05-01), Meyer, Jr. et al.

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