Polyamide articles resistant to hot antifreeze compositions

Stock material or miscellaneous articles – Hollow or container type article – Cellular material derived from plant or animal source

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4284744, 4284755, 525 66, 525183, B27N 502

Patent

active

046122222

ABSTRACT:
A polyamide article for use in contact with antifreeze compositions at elevated temperatures wherein the article is formed of a reinforced composition comprising a polyamide selected from nylon 66, nylon 6 and nylon 610 or copolymers thereof, from 10 to 60% by weight of reinforcing filler and from 0.1 to 10%, preferably 0.25 to 5% by weight of a copolymer formed from ethylenically unsaturated monomers and having functional groups extending from the polymer chain capable of reaction with the end groups of the polyamide polymer wherein the copolymer contains up to 50 mole % of residues obtained from ethylenically unsaturated monomers containing functional groups. The functional groups are preferably carboxylic acid or carboxylic acid anhydride groups. The articles include radiator end tanks and water pump bodies and impellers.

REFERENCES:
patent: 3419517 (1968-12-01), Hedrick et al.
patent: 4321336 (1982-03-01), Meyer et al.
patent: 4335223 (1982-06-01), Flood et al.
patent: 4346194 (1982-08-01), Roura
patent: 4423186 (1983-12-01), Grigo et al.

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