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DETERGENTS PATENTS HIGHLIGHTS Issue 103 July 2012 |
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The results of a very large programme of work appeared from Stepan in several patent applications which disclosed the modification of triglycerides by metathesis either alone or with lower olefins such as butene-1, and a veritable multitude of derivatives with double bonds in unusual places: nonionics, sulphonates, amines, betaines . . .
Empire Technology Development LLC immobilised lipase on a core of iron oxide so that it was recoverable with magnetic filters and a new Geobacillus lipase was engineered at the Universiti Putra Malaysia. Aquea Scientific showed how to wrap functional materials in a shell of silica, Nippon Emulsion KK noted a remarkable thickening effect of unusual long chain esters of polyols, and Myoshi Yushi synthesised new antibacterial cationics.
Literally dozens of bis-azo and thiophene-azo dyes were disclosed by P&G, more initiatives for controlling suds in the rinse and thus save water came from both P&G and Unilever, and Unilever developed a new product form, 5 mm oblate ellipsoids (beads),which were able to contain calcium-insensitive surfactants (and thus without builder) without the expected caking and which flowed easily out of transparent bottles.
Unilever structured liquids with pulped citrus fibres, Henkel printed non-woven polyester with a surfactant melt and an enzyme melt in different regions, and more dye-trapping sheets appeared from Orlandi Spa and Rudolf GmbH.
Reckitt Benckiser developed a machine dishwash gel which quickly turned into a mousse on delivery from an aerosol can, low VOC solvents and alkanolamines for household cleaners came from Rhodia and Dow respectively, and Clorox used nano-sized optically functional inorganics and quantum dots to add a stable colour to hypochlorite. Illinois Tool Works signalled hygiene, or lack of it, with a reversible colour-changing cloth and Ecolab with a fluorescent gel which was to be spread on critical surfaces.
Kao beautified the skin by taking off the outermost layers with solvents. |
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