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US 6,273,919 B1Granted
Biodegradable ether dry cleaning solvent
AssigneeRynex Holdings Ltd.
InventorWilliam A. Hayday
Life of this patent
Estimating the term…
Abstract
A method for dry-cleaning garments which comprises treating the garments with a mixture of dipropylene glycol tertiary-butyl ether (DPTB) and water for a period of time sufficient to effect dry-cleaning, wherein the weight ratio of DPTB to water is at least 9:1.
Claims5
A method of dry-cleaning garments, comprising treating the garments for a period of time sufficient to effect dry-cleaning in a dry-cleaning composition comprising dipropylene glycol tertiary-butyl ether (DPTB) and water, wherein the weight ratio of DPTB to water is at least about 9:1.
Dependencies are inferred from the claim text.