摘要:
Water-soluble, cationic polysaccharides, including quaternary nitrogen-containing cellulose ethers, containing hydrophobic substitution, are substantially water-soluble; provide aqueous solutions having enhanced viscosity, foaming and preferably improved surface properties; and possess utility in personal care, emulsions and cleansers.
摘要:
An environmentally safe method is provided for the removal and disposal of residual water soluble polymers, particularly polyethers, from aqueous waste streams, wherein a pretreated inert inorganic substrate is contacted with the waste stream and the polymer contained therein adsorbed onto the substrate. Thereafter, the polymers are removed from the substrate as CO.sub.2 and water by combustion and the substrate subjected to regenerative conditions for recycling.
摘要:
A method of imparting internal mold release properties to reaction injection molding polyurethane compositions by the addition of a perfluoroalkylorganocarboxylic acid or a salt thereof. This invention also relates to the production of novel perfluoroalkylorganodibutyltindioxide compounds which are inherently catalytic and can also impart the property of internal mold releasability to RIM compositions.
摘要:
A method is provided for increasing the solubility of an enzyme in an aqueous solution comprising providing a water-soluble anionic surfactant to the solution and further providing the solution with a pH above that which result in the formation of an enzyme/surfactant precipitate. The application is further directed to an aqueous solution containing an anionic surfactant and having an enzyme concentration contained therein which is higher than that possible in the absence of the surfactant.
摘要:
Binary polymer mixtures of albumin and glycosaminoglycan and ternary polymer mixtures of polyionic polypeptide and high molecular weight and highly charged polyanions are useful for managing skin including wrinkles or other irregularities. Aqueous compositions of the ternary mixtures have pH dependent phase change properties and provide skin activated films.
摘要:
A durable, effective foam suppressant composition produced through free-radical polymerization of mixtures of polydiorganosiloxanes, silica and a free radical polymerization initiator, and optionally, vinyl monomer(s) and pendant vinyl modified silicone oil, followed by dilution of the resulting reaction product with a low viscosity polysiloxane is disclosed. Also disclosed are methods for its production and use in suppressing foams in liquid mediums.
摘要:
Foamable compositions comprising water, and a modified non-ionic cellulose ether prepared as described in U.S. Pat. No. 4,228,277 produce very stable foams. Accordingly, these compositions are suitable for use as foaming personal care products, such as hair styling mousses and foaming hand lotions and cleansers, and in other applications where stable foams are needed. In personal care products, foaming is desirably effected by an aerosol propellant included in the foamable composition.
摘要:
A process for the selective concentration of metal values in solution wherein said metal-containing solution is contacted with a multiple-phase system having a common solvent, thereby causing the preferential migration of metal values into one phase of said multiple-phase system. The phases of the system may then be isolated and the metal values recovered therefrom by conventional techniques.
摘要:
A process for the recovery of enzymes from an aqueous system having at least two aqueous phases wherein the partition coefficient with respect to an enzyme may be improved through the addition of organo-compatible, compounds having anionic functionality, such as polyacrylic acid, polyvinyl sulfonate and sodium dodecylsulfate.