Polyamide compositions having nitrile rubber and copolymer of et

Details Polyamide compositions having nitrile rubber and copolymer of et Polyamide compositions having nitrile rubber and copolymer of et

1987-10-27

1989-02-07

Bleutge, John C.

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

Synthetic resins

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

525 66, C08L 7700

Patent

active

048032476

ABSTRACT:
The present invention is directed to a polyamide composition comprising from about 50 to 90% by weight of a polyamide, from about 10 to 40% by weight of a nitrile rubber, and from about 5 to 50% by weight of a reactive rubber which contains groups which are reactive with the end groups of the polyamide. The composition preferably contains about 2 to 20% by weight of a plasticizer for nylon, and can optionally contain from about 0 to 10% by weight of a polyamide chain extender.
The present invention also includes gas permeation resistant articles including articles resistant to chlorofluorohydrocarbon permeation. Articles of particular interest include extruded hose and tubing which contain at least one layer made of the above described composition. It has been discovered that the composition of the invention resists chlorofluorohydrocarbon permeation and at the same time can provide the flexibility needed for use in various hose and tubing applications.

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