Salt resistant polyamide composition

Details Salt resistant polyamide composition Salt resistant polyamide composition

1985-07-12

1988-05-17

Jacobs, Lewis T.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524169, 524514, 528488, C08K 543, C08K 541

Patent

active

047451432

ABSTRACT:
A salt resistant composition comprising a polyamide selected from the group consisting of: polyepsiloncaprolactam, polyhexamethylene adipamide; copolymers of caprolactam, hexamethylene diamine, and adipic acid; and mixtures thereof. The composition contains from 2 to 30 percent, and preferrably 4 to 30 percent based on the weight of the polyamide of a water insoluble plasticizer, and a copolymer of an alpha-olefin and an unsaturated carboxylic acid and derivatives thereof. The plasticizer has been found to enable the polyamide composition to maintain its flexibility upon exposure to a variety of salts. Preferred plasticizers include lauryl lactam and sulfonamides. Preferred are sulfonamide type plasticizers such as n-ethyl o,p-toluenesulfonamide; o,p-toluene sulfonamide, and toluene sulfonamide formaldehyde resin. The invention includes articles made from the composition.

REFERENCES:
patent: 3516961 (1970-06-01), Robb
patent: 3676400 (1972-07-01), Kohan et al.
patent: 3993611 (1976-11-01), Sims et al.
patent: 4174358 (1979-11-01), Epstein
patent: 4251424 (1981-02-01), Pagilagan
patent: 4399246 (1983-08-01), Hyde
Introducing Zytel.RTM. Extrusion Resins, Nylon Engineering Thermoplastics; The Flexible Family; DuPont Bulletin.

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