Abstract: A storage stable oral composition having a pH of 8 or more which is effective against calculus, the composition containing an orally acceptable vehicle prepared using a sorbitol humectant containing less than about 0.10% by weight of a reducing sugar there being incorporated in the vehicle an effective anticalculus amount a water soluble alkali metal polyphosphate anticalculus salt.

Abstract: An aqueous abrasive whitening composition containing a peroxide whitening compound which is chemically and physically stable and exhibits heightened and rapid whitening of teeth and stain removal which comprises a combination of water, abrasive and peroxide compounds, a humectant containing a polyethylene glycol, a polyoxyethylene-polyoxypropylene block copolymer, a metal ion complexing agent and an antioxidant, the pH of the composition being in the range of about 5.8 to about 7.2.

Abstract: A catalytic process for the hydrolysis of alkyl vinyl ether/maleic anhydride copolymers, involving a base catalyst.

Abstract: A process for preparing a cross-linked alkyl vinyl ether/maleic anhydride copolymer having improved linear viscoelastic properties desired in oral care preparations, wherein the cross-linking of an alkyl vinyl ether/maleic anhydride copolymer with a polyol compound is carried out at a temperature of from about 50.degree. to about 90.degree. C. and the cross-linked product is recovered.

Abstract: The present invention concerns a method for the production of olefin anhydrides, such as acrylic anhydride and methacrylic anhydride, via reactions between an aromatic acid chloride, such as benzoyl chloride, and carboxylate ions of the olefin acid corresponding to the anhydride to be produced. The method of the invention may be conducted without the use of a solvent, catalyst, polymerization inhibitor, or an external source of heat. Moreover the acrylic anhydrides of the invention can be used to produce high yields of acrylate esters by means of room-temperature reactions, without mineral acid catalysis.

Abstract: A chromatographic process for deacidification of vegetable oils at ambient temperature. According to the process, which can be retrofitted into deacidification operations using miscella refining or solvent extraction, crude vegetable oil is dissolved in a solvent such as isopropyl alcohol and passed through a column of activated alumina (aluminum oxide) at room temperature. The process, which eliminates physical contact between both oil and an alkaline reagent and oil and water, simplifies subsequent bleaching processes by also removing some color pigments. The spent alumina can be reactivated by washing it with a dilute solution of sodium hydroxide or potassium hydroxide.