Bleaching and dyeing; fluid treatment and chemical modification – Cleaning or laundering – Removing formation impurities from artifical fiber
Patent
1973-10-01
1976-05-04
Levy, Donald
Bleaching and dyeing; fluid treatment and chemical modification
Cleaning or laundering
Removing formation impurities from artifical fiber
8158, 68208, 68 18F, 210 42R, D06F 3902
Patent
active
039544036
ABSTRACT:
A washing machine or dishwasher includes means for admixing with waste wash water a suitable chemical compound to convert the soluble phosphate in the wash water to insoluble form before discharge of the waste solution to a sewer, drain or other means of disposal. Among the useful chemical compounds employed are calcium chloride, calcium hydroxide and aluminum sulfate, which convert soluble phosphates, including tripolyphosphate and pyrophosphate salts, to insoluble materials, which may be removed from the effluent. Also within the invention are accessories for use with conventional washing apparatuses for effecting the insolubilization reaction, and corresponding processes.
REFERENCES:
patent: 2733120 (1956-01-01), Robson
patent: 2753241 (1956-07-01), MacMahon
patent: 3023132 (1962-02-01), Diamond et al.
patent: 3192155 (1965-06-01), Bready et al.
patent: 3650686 (1972-03-01), Hudson
Colgate-Palmolive Company
Grill Murray M.
Koch Kenneth A.
Levy Donald
Sylvester Herbert S.
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