Stock material or miscellaneous articles – Three dimension imitation or 'treated' natural product
Patent
1988-01-11
1989-03-14
Epstein, Henry F.
Stock material or miscellaneous articles
Three dimension imitation or 'treated' natural product
156 61, B05C 116
Patent
active
048123404
ABSTRACT:
The disclosure relates to a composition of matter comprising a rock substrate having a coating simulating natural desert varnish which can be developed within a few days, as contrasted to natural desert varnish which requires at least decades to develop in nature. The coating comprises an initial layer of the reaction product of the rock substrate with a solution of an alkali base and a finishing cover comprising the reaction product of the initial layer with a solution of a metallic salt. Optionally, the coating can include an additional covering of sodium hypochlorite.
REFERENCES:
patent: 3955018 (1976-05-01), Liberto et al.
patent: 4082871 (1978-04-01), Peters
patent: 4725451 (1988-02-01), Cripe
Hunt, "Desert Varnish," Science, vol. 120, pp. 183-184 (1954).
Engel et al., "Chemical Data on Desert Varnish," Bull. Geol. Soc. Amer., vol. 69, No. 5, pp. 487-518 (1968).
Hem., "Deposition & Solution of Manganese Oxides," U.S. Geol. Survey Water Supply, Paper 1667-B, pp. B1-B41 (1963).
Krauskopf, "Separation of Manganese from Iron in Sedimentary Process," Grochem, Cosmochim, Acta, vol. 12, pp. 61-84 (1957).
Cates Charles E.
Epstein Henry F.
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