Process for preparing wood preservative compositions

Details Process for preparing wood preservative compositions Process for preparing wood preservative compositions

1987-01-16

1989-01-10

Meyers, Albert T.

Drug, bio-affecting and body treating compositions

Immunoglobulin, antiserum, antibody, or antibody fragment,...

Structurally-modified antibody, immunoglobulin, or fragment...

424137, A01N 5922

Patent

active

047972815

ABSTRACT:
Wood preservative compositions containing as active ingredients compounds of copper, of chromium and of arsenic are produced by mixing copper arsenate and sodium dichromate in an aqueous medium into which is introduced strong acid, for example sulphuric acid, effective to achieve a soluble product. The acid addition is preferably effective to reduce the pH to below 0. The composition so produced is a homogeneous paste which may be dissolved in water to working concentration and used for the preservation of wood by impregnation techniques.

REFERENCES:
patent: 2366612 (1945-01-01), Hager
patent: 2438511 (1948-03-01), McMahon
patent: 3957494 (1976-05-01), Oberley
patent: 4103000 (1978-07-01), Hartford
patent: 4218249 (1980-08-01), Hill
patent: 4247329 (1981-01-01), Mills
patent: 4313976 (1982-02-01), Leach

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