Method for manufacture of a composite copper-arsenic compound mi

Details Method for manufacture of a composite copper-arsenic compound mi Method for manufacture of a composite copper-arsenic compound mi

1980-07-08

1982-11-02

Barr, J. L.

Compositions

Preservative agents

Anti-caking, separative or protective coatings or zones

106 1505, 424133, 424140, 424143, C09K 300

Patent

active

043572618

ABSTRACT:
From a refinery's intermediate byproduct composed of a sulfide, oxide or arsenide containing copper and arsenic, a liquid extract containing copper and arsenic at a concentration ratio of not less than 1.0 is obtained. The liquid extract is cooled to a predetermined temperature to achieve solid-liquid phase separation, and the liquid resulting from the phase separation is neutralized to pH 6-7 to isolate copper and arsenic in the form of a composite precipitate. The composite copper-arsenic compound mixture thus obtained has a high purity and low production cost and can be converted through a simple treatment into an effective antiseptic for wood.

REFERENCES:
patent: 2112102 (1938-03-01), Klumpp
patent: 2686114 (1954-08-01), McGauley
patent: 3917519 (1975-11-01), Fisher et al.
patent: 3964901 (1976-06-01), Swinkels
patent: 4103000 (1978-07-01), Hartford
patent: 4118243 (1978-10-01), Sandesara
patent: 4218249 (1980-08-01), Hill
patent: 4224927 (1981-01-01), Reynolds et al.
patent: 4247329 (1981-01-01), Mills

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