Powdered electric circuit assembly cleaner

Details Powdered electric circuit assembly cleaner Powdered electric circuit assembly cleaner

1992-06-10

1993-11-16

Garvin, Patrick P.

Cleaning and liquid contact with solids

Processes

Miscellaneous

134 2, 134 40, 252135, B08B 304

Patent

active

052619672

ABSTRACT:
A method of removing rosin soldering flux or other residues from a printed wiring board comprises directly adding to the wash water which contacts the boards a powdered cleaning composition which comprises water soluble alkaline salts. The method of directly adding the cleaning composition to the water supply in the form of a powder eliminates the need to incorporate organic stabilizers which previously have been required to maintain surfactants and the like in solution in aqueous concentrates. By reducing the organic content of the cleaning compositions, the aqueous effluents from the cleaning method have substantially reduced biological oxygen demand (BOD) and chemical oxygen demand (COD) levels.

REFERENCES:
patent: 2739129 (1956-03-01), Manchot
patent: 2741599 (1956-04-01), McDonald et al.
patent: 3023132 (1962-02-01), Diamond et al.
patent: 3672993 (1972-06-01), Mitchell et al.
patent: 3847663 (1974-11-01), Shumaker
patent: 3904685 (1975-09-01), Shahidi et al.
patent: 4089703 (1978-05-01), White
patent: 4214915 (1980-07-01), Dillarstone et al.
patent: 4228048 (1980-10-01), Tesdahl
patent: 4283299 (1981-08-01), Becker et al.
patent: 4304680 (1981-12-01), Wixon
patent: 4347152 (1982-08-01), Wixon
patent: 4348292 (1982-09-01), Ginn
patent: 4362640 (1982-12-01), Schreiber
patent: 4382825 (1983-05-01), McCready
patent: 4434069 (1984-02-01), Fairchild
patent: 4457322 (1984-07-01), Rubin et al.
patent: 4521332 (1985-06-01), Milora
patent: 4528039 (1985-07-01), Rubin et al.
patent: 4539133 (1985-09-01), Boskamp
patent: 4554026 (1985-11-01), Cosper et al.
patent: 4741863 (1988-05-01), Yamamoto et al.
patent: 4756846 (1988-07-01), Matsuura et al.
patent: 4783281 (1988-11-01), Bishop et al.
patent: 4820440 (1989-04-01), Hemm et al.
patent: 4820441 (1989-04-01), Evans et al.
patent: 4844744 (1989-07-01), Leiter et al.
patent: 4869844 (1989-09-01), Johnson
patent: 4904571 (1990-02-01), Miyashita et al.
patent: 5015408 (1991-05-01), Reuss
patent: 5049200 (1991-09-01), Brunner et al.
patent: 5096609 (1992-05-01), Dany et al.
patent: 5108641 (1992-04-01), Ahmed et al.

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