Lever Brothers Company, Division of Conopco, Inc.

National Starch and Chemical Investment Holding Corporation

Sharon Harriott Jureller

Judith L Kerschner

Robert W Humphreys

Rosemarie Harris

Dennis Stephen Murphy

Myongsuk Bae-Lee

Lisa Del Pizzo

Carol Resch

Cathy Wada

Carmine P Iovine

John Socrates Thomaides

Peter T Trzasko

A system for dry cleaning soils from fabrics comprising densified carbon dioxide and a surfactant in the densified CO . The densified carbon dioxide is in a temperature range of about &minus;78.5&deg; C. to about 100&deg; C. and a pressure range of about 14.7 to about 10,000 psi. At least 0.1% by volume of a modifier is preferably present. The surfactant has a polysiloxane a branched polyalkylene oxide or a halocarbon group which is a functional CO -philic moiety connected to a CO -phobic functional moiety. The surfantant either exhibits an HLB of less than 15 or has a ratio of siloxyl to substituted siloxyl groups of greater than 0.5:1.

Dry cleaning system with low HLB surfactant

A system for dry cleaning soils from fabrics comprising densified carbon dioxide and a surfactant in the densified CO,. The densified carbon dioxide is in a temperature range of about &minus;78.5&deg; C. to about 100&deg; C. and a pressure range of about 14.7 to about 10,000 psi. At least 0.1% by volume of a modifier is preferably present. The surfactant has a polysiloxane, a branched polyalkylene oxide or a halocarbon group which is a functional CO,-philic moiety connected to a CO,-phobic functional moiety. The surfactant either exhibits an HLB of less than 15 or has a ratio of siloxyl to substituted siloxyl groups of greater than 0.5:1.

Method of dry cleaning using densified carbon dioxide and a surfactant

A polyurethane polymer and method of preparing it is described. The process requires the combination of a soluble polyol with a di- or polyisocyanate under densified fluid conditions. The process to prepare a waterborne polyurethane involves the utilization of a polyol containing ionic or latent ionic groups which must undergo preneutralization before combining with the di- or polyisocyanate under densified fluid conditions. The resulting polyurethane is substantially free of an organic solvent.

Synthesis of condensation polymers in densified fluids

A system for dry cleaning soils from fabrics comprising densified carbon dioxide and a surfactant in the densified CO.sub.2. The densified carbon dioxide is in a temperature range of about -78.5.degree. C. to about 100.degree. C. and a pressure range of about 14.7 to about 10,000 psi. At least 0.1% by volume of a modifier is preferably present. The surfactant has a polysiloxane, a branched polyalkylene oxide or a halocarbon group which is a functional CO.sub.2 -philic moiety connected to a CO.sub.2 -phobic functional moiety. The surfactant either exhibits an HLB of less than 15 or has a ratio of siloxyl to substituted siloxyl groups of greater than 0.5:1.

Dry cleaning system using densified carbon dioxide and a surfactant

This invention relates to a process for chemically modifying polysaccharides in a densified fluid. In particular, the modification includes esterification and/or etherification of a starch in supercritical carbon dioxide. The process is advantageous in that it allows for a high degree of substitution without the use of organic solvents or repeated reactions.

Polysaccharide modification in densified fluid

A system for dry cleaning soils from fabrics comprising densified carbon dioxide and a surfactant in the densified CO.sub.2. The surfactant has a polysiloxane, a branched polyalkylene oxide and a halocarbon group which is a functional CO.sub.2 -philic moiety connected to a CO.sub.2 -phobic functional moiety. The surfactant either exhibits an HLB of less than 15 or has a ratio of siloxyl to substituted siloxyl groups of greater than 0.5:1.

A method of dry cleaning fabrics using a dry cleaning system is described. The system comprises densified carbon dioxide, preferably in a liquid phase, and a selected surfactant which is soluble in the densified CO.sub.2. The surfactant has a polysiloxane, a branched polyalkylene oxide or a halocarbon group which is a functional CO.sub.2 -philic moiety connected to a CO.sub.2 -phobic functional moiety. The surfactant either exhibits an HLB of less than 15 or has a ratio of siloxyl to substituted siloxyl groups of greater than 0.5:1.

Method of dry cleaning fabrics using densified liquid carbon dioxide

A method of dry cleaning fabrics using a dry cleaning system is described. The system comprises densified carbon dioxide and a surfactant in the densified CO.sub.2. The surfactant has a polysiloxane, a branched polyalkylene oxide and a halocarbon group which is a functional CO.sub.2 -philic moiety connected to a CO.sub.2 -phobic functional moiety. The surfactant either exhibits an HLB of less than 15 or has a ratio of siloxyl to substituted siloxyl groups of greater than 0.5:1.

Method of dry cleaning fabrics using densified carbon dioxide

A method for epoxidizing olefins is provided wherein an olefin and an oxygenating agent are contacted together in the presence of a manganese complex catalyst having at least one manganese atom coordinated with a nitrogen-containing ligand such that the manganese atom to coordinated nitrogen atom is 1:3 and thereafter isolating the resultant epoxide product. Catalyst compositions are also provided formed from the adsorption of the manganese complex catalyst onto a solvent insoluble support.

Epoxidation of olefins via certain manganese complexes

Novel bleach and oxidation catalysts are reported as well as a bleaching-detergent composition employing these catalysts and a method for removing stains from substrates. The catalysts are manganese complexes of the formula:

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Haworth, NJ, United States of America

Sharon Harriott Jureller