Chromated copper arsenate wood preservative compositions

Details Chromated copper arsenate wood preservative compositions Chromated copper arsenate wood preservative compositions

1974-09-30

1976-05-18

Hayes, Lorenzo B.

Compositions: coating or plastic

Coating or plastic compositions

Contains fireproofing or biocidal agent

424137, 424140, 427440, C09D 514

Patent

active

039574946

ABSTRACT:
Chromated copper arsentate wood preserving solutions in which the ratio of hexavalent chromium to trivalent chromium in the solution is between about 4.0:1.0 to about 1.0:1.0 give improved penetration into the wood, better retention of preservative in the wood, and improved stability of the treating solution. The solutions contain an acid to maintain the required pH, prevent corrosion, and further improve the solution stability.

REFERENCES:
patent: 2041655 (1936-05-01), Gunn
patent: 2230748 (1941-02-01), Hager
patent: 3080212 (1963-03-01), Oberley et al.
patent: 3266985 (1966-08-01), Swales
patent: 3523049 (1970-08-01), Putman

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