Impregnation of porous articles

Details Impregnation of porous articles Impregnation of porous articles

1980-06-24

1982-01-19

Lusignan, Michael R.

Coating processes

Vacuum utilized prior to or during coating

Metal base

118 50, 118416, 427354, 4273882, 427435, C23C 1308, B05C 300, B05D 118, B05D 300

Patent

active

043117350

ABSTRACT:
A method of impregnating a porous article with impregnant to seal the pores thereof, which comprises placing the article in a vessel, evacuating the vessel to withdraw air from the pores, releasing the vacuum with the pores beneath the surface of a liquid impregnant in the vessel, removing excess impregnant from the vessel, washing excess impregnant from the surface of the article by supplying washing fluid to the vessel, removing the fluid from the vessel, heating the article while still within the vessel to effect curing of the impregnant within the pores, and removing the impregnated article from the vessel.

REFERENCES:
patent: 3701676 (1972-10-01), Bader et al.
patent: 3969552 (1976-07-01), Malotsky
patent: 4147821 (1979-04-01), Young

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