A - Human Necessities – 61 – K
Patent
A - Human Necessities
61
K
167/166
A61K 9/22 (2006.01) A61K 9/20 (2006.01) C11D 17/00 (2006.01)
Patent
CA 1322722
27 TITLE USE OF VINYL ALCOHOL HOMOPOLYMER AND COPOLYMERS FOR TABLETING ACTIVE MATERIALS ABSTRACT 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.
562390
Bateman Linda Ratner
Coffin-Beach David Paul
Di Luccio Robert Cosmo
Stewart Clare Augustus Jr.
Visioli Donna Lynn
E. I. Du Pont de Nemours And Company
Sim & Mcburney
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