Closed loop dry cleaning method and solvent

Details Closed loop dry cleaning method and solvent Closed loop dry cleaning method and solvent

1999-05-03

2000-05-02

Diamond, Alan

Bleaching and dyeing; fluid treatment and chemical modification

Cleaning or laundering

Dry cleaning

8137, 134 21, 134 32, 134 33, 134 34, 134 254, 510285, D06L 102, D06L 108

Patent

active

060567899

ABSTRACT:
The present invention comprises a closed loop dry cleaning system and method, in which dry cleaning machinery is used in conjunction with a specific solvent which is derived from an organic/inorganic hybrid (organo silicone). In this class of organo silicones is a group known as cyclic siloxanes. The cyclic siloxanes present the basis for material composition of the solvent chemistry which allows this dry cleaning system to be highly effective. The cyclic-siloxane-based solvent allows the system to result in an environmentally friendly process which is, also, more effective in cleaning fabrics and the like than any known prior system. The siloxane composition is employed in a dry cleaning machine to carry out the method of the invention. In a preferred embodiment, the method comprises the steps of loading articles into a cleaning basket; agitating the articles and the siloxane composition in which they are immersed; removing most of the siloxane composition; centrifuging the articles; and removing the articles from the basket after cooling the articles.

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Environmental Protection Agency; Perchloroethylene Dry Cleaning Facilities; General Recommended Operating and Maintenance Practices for Dry Cleaning Equipment.
Patent Abstracts of Japan, abstract for JP 6-327,888, Nov. 1994.

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