Impregnated castings chemically resistant to contact with haloca

Details Impregnated castings chemically resistant to contact with haloca Impregnated castings chemically resistant to contact with haloca

1978-05-05

1979-10-23

Cannon, J. C.

Stock material or miscellaneous articles

Composite

Of metal

427 35, 427 36, 427 44, 427 54, 427 55, 427388A, 428461, B05D 306, B32B 508, B32B 3128

Patent

active

041721780

ABSTRACT:
A metal casting, containing connected pores, is impregnated with a halocarbon resistant barrier resin, consisting essentially of the admixture of a polyester resin, and from about 1 wt. % to about 70 wt. % of a polyfunctional monomer modifier selected from the group consisting of trimethylolpropane triacrylate, divinyl benzene, pentaerythritol triacrylate or their mixtures, which after curing provides a casting which is resistant to chemical and solvent attack by chlorodifluoromethane and dichlorodifluoromethane and which is impervious to gases and liquids.

REFERENCES:
patent: 2807155 (1957-09-01), Williamitis
patent: 2961258 (1960-11-01), Donley et al.
patent: 3644161 (1972-02-01), Hall
patent: 3878112 (1975-04-01), Luck et al.
"New Methods in Impregnation of Oil Castings," Impco Inc. Tech. Paper No. 2272, 1972 SDCE Oil Casting Congress.

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