Abstract: Compositions for dry-cleaning garments containing dipropylene glycol tertiary-butyl ether (DPTB), water, and at least one other solvent selected from cyclic siloxanes and glycol ethers other than DPTB suitable for use as dry-cleaning solvents, wherein the water is present at a level of about 10% by weight or less.
Abstract: A wool or the like fiber scour including at least one of the following, (a) scouring process wherein the fiber is subjected to an acid extraction process to remove absorbed iron, and by to greatly improve the brightness (Y tristimulus value) of the wool; (b) a scouring process wherein a bleaching process is carried out part way through the wet process following by dying, rewriting and chemical reduction, therefore stabilising the bleached color to prevent subsequent reversion in the dyebath; or (c) a scouring process wherein scoured clean fiber is dried and dusted, and then reimmersed in liquors containing detergents and dispersants, thereby effectively removing extra amounts of residual dirt. The scour produces an improved quality of fibres.
Type:
Grant
Filed:
July 5, 2000
Date of Patent:
March 25, 2003
Assignee:
Wool Research Organisation of New Zealand, Inc.
Inventors:
Alan John McKinnon, John Robert McLaughlin, Murray Edwin Taylor, Douglas Alexander Rankin, Paul Gregory Middlewood, Phillipa Le Pine, Paul Johannes Roy Mesman, Stephen Barry Manson
Abstract: An improved process for removing ink soil from porous substrates, preferably from woven fabrics which include cellulosic materials such as cotton towels is described herein. The process includes an initial contacting step with an alkyl fatty acid ester, a wash step with a conventional detergent and a final water rinse step. A chelating agent is used during one of the first two steps or, alternatively, between the first two steps.
Type:
Grant
Filed:
November 9, 1999
Date of Patent:
September 18, 2001
Assignee:
Ecolab Inc.
Inventors:
Robert D. P. Hei, Kim R. Smith, Wendy Wiseth