Patent Picks are compiled by the editors from publicly available sources. This edition features the latest patents related to sulfate-free products, including technologies to improve their characteristics, and some that simply provide sulfate-free formula examples.
Polysaccharide products with improved clarity
U.S. Patent 8796196
Publication date: Aug. 5, 2014
Assignee: Hercules Inc.
Disclosed in this patent is a process for producing anionic, nonionic, amphoteric or cationic derived polysaccharide products that demonstrate high clarity in surfactant-based compositions. The polysaccharide polymer is reacted for a sufficient time at a sufficient temperature in the presence of water, caustic and at least one surfactant, or it may be reacted with an oxidizing agent, hydrolytic or proteolytic enzymes, molecular weight reducing agents and a cationizing agent and nonionic agent. The polysaccharide formed has a lower clarity in water than in an aqueous surfactant system and can be used in personal care or household care products.
Provided is a sulfate-free formulation suggestion, including: deionized water, qs to 100% w/w; cocamidopropyl betaine (30%), 15.00% w/w; sodium lauroylsarcosinate (30%), 10.00% w/w; sodium lauroamphoacetate (35%), 6.00% w/w; anhydrous glycerin, 1.00% w/w; alkylpolyglucosides, 2.00% w/w; disodium EDTA, 0.10% w/w; biocide, 0.10% w/w; and polymer, 0.50% w/w.