E.i. Dupont De Nemours and Company

Linda R Bateman

Donna Lynn Visioli

Edward J Deyrup

Lawrence C Muschiatti

Robert C Di Luccio

Clare A Stewart

William L Strum

David P Beach-Coffin

The present invention relates generally to oriented, crystallized polyester compositions which can be thermoformed and heat set with sheet cycle times. More specifically, the compositions of the present invention comprise specialized alkali metal-containing nucleating agents which provide high crystallization rates.

Polyester compositions having improved optical properties and heat

Method of making tablets for active ingredient delivery by compressing a mixture of active ingredient and granular, high viscosity, fully hydrolyzed polyvinyl alcohol or copolymer of vinyl alcohol with methyl acrylate or methyl methacrylate. By use of a crystalline, heat treated polymer, a tablet providing quick active ingredient release is obtained. By using an amorphous, non-heat treated polymer a tablet providing prolonged active ingredient release is obtained. By using blends of crystalline and amorphous polymers, tablets having a range of active ingredient release characteristics can be obtained. The granular, high viscosity, fully hydrolyzed polymers provide flowability, compressibility and processing versatility advantages over conventional tablet binders.

Use of vinyl alcohol homopolymer and copolymers for tableting active

Elastomeric terionomer blends composed of (1) a copolymer of chloroprene with an .alpha.,.beta.-unsaturated carboxylic acid, (2) a copolymer of ethylene with an .alpha.,.beta.-unsaturated carboxylic acid, and (3) a terpolymer of ethylene with a vinyl ester of a lower saturated carboxylic acid or with a lower alkyl acrylate or methacrylate and with an .alpha.,.beta.-unsaturated carboxylic acid, which blends are neutralized with metal ions to a degree of at least 10%, are easily processable in conventional rubber-processing equipment, can be extruded and injection-molded, and have very good physical properties and low flammability.

Elastomeric terionomer blends

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Wilmington, DE, United States of America

Linda R Bateman