Acid copper chromate concentrates

Details Acid copper chromate concentrates Acid copper chromate concentrates

1979-10-03

1982-04-06

Schofer, Joseph L.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

424140, 427440, 106 1505, 106 1826, C09K 1500

Patent

active

043234771

ABSTRACT:
An aqueous copper chromate concentrate substantially free of sulfate anions is provided which can be diluted for use as a wood preservative. The concentrate is formed of a hexavalent chromium compound, a bivalent copper compound, and an acid selected from nitric, sulfamic, fluosilicic, fluoboric and mixtures wherein the total oxide content of CuO and CrO.sub.3 is from 25 to 60%.

REFERENCES:
patent: 3948802 (1976-04-01), Liddell
patent: 3957494 (1976-05-01), Oberly
patent: 4218249 (1980-08-01), Hill
patent: 4247329 (1981-01-01), Mills

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