Dry cleaning method and modified solvent
Patent 6042617 Issued on March 28, 2000. Estimated Expiration Date: 
May 3, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 3, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2176705 2697075 2941952 3123494 3630660 3910848 Detergent compositions containing ethoxylated nonionic surfactants and silicone containing suds suppressing agents Cleaning and protective composition and method Method for removing tacky adhesives and articles adhered therewith Compositions for treating hair and other fibrous materials InventorAssigneeApplicationNo. 304430 filed on 05/03/1999US Classes:8/142, Dry cleaning8/137, CLEANING OR LAUNDERING134/25.1, Work handled in bulk or groups134/25.4, Manufactured articles134/32, With work or work parts movable during treatment134/33, Centrifugal force and/or rotated work body134/34, With treating fluid motion134/42, Miscellaneous510/285, Dry cleaning (e.g., using nonaqueous fluid, etc.)510/289Polyoxyalkyene containing surfactant devoid of covalently bonded anionic substituentsExaminersPrimary: Diamond, AlanAttorney, Agent or FirmForeign Patent References
International ClassesD06L 001/02D06L 001/04 AbstractThe present invention comprises a 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. Such 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 order to enhance the cleaning capabilities of the cyclic-siloxane-based solvent, such solvent is modified with a chemical that is selected from the group of chemicals including 2-ethylhexyl acetate, esters, alchohols, and ethers. In a preferred embodiment, the method comprises the steps of loading articles into a cleaning basket; agitating the articles and the modified siloxane composition in which they are immersed; removing most of the modified siloxane composition; centrifuging the articles; and removing the articles from the basket after cooling the articles.Other References
Field of SearchDry cleaningCLEANING OR LAUNDERING Dry cleaning (e.g., using nonaqueous fluid, etc.) Polyoxyalkyene containing surfactant devoid of covalently bonded anionic substituents Miscellaneous Work handled in bulk or groups Manufactured articles With work or work parts movable during treatment Centrifugal force and/or rotated work body With treating fluid motion | |
