3m Innovative Properties Company

John C Newland

Kevin R Schaffer

John Charles Clark

Robert F Kamrath

Malcolm B Burleigh

Jimmie Rae Baran, Jr

A process is described which imparts exceptional antisoiling, anti-staining and repellent properties to carpets. The process makes use of a water-based exhaustion process wherein the water-based treating solution contains (1) glassy fluorochemical material, glassy hydrocarbon material, or combinations thereof; (2) a stainblocking material; (3) a polyvalent metal salt, acid, or combinations thereof; and (4) water. Subsequent to exhaustion, the wet treated carpet is heated, usually in a steaming step, rinsed, and dried in a dry heat oven.

Treatment of fibrous substrates to impart repellency, stain resistance, and soil resistance

The invention provides dry cleaning compositions comprising hydrofluoroether, a cosolvent selected from the group consisting of glycol ethers, fluorocarbon surfactants, alkanols, and mixtures thereof, and water present in an amount of less than 1 percent by weight. In another aspect, the invention provides a method of cleaning fabric articles comprising the step of contacting an effective amount of the above dry cleaning composition with a fabric for a length of time sufficient to clean the article.

Growing community of inventors

Saint Paul, MN, United States of America

John C Newland