Compositions: coating or plastic – Coating or plastic compositions – Carbohydrate or derivative containing
Patent
1980-05-23
1982-05-18
Hoke, V. P.
Compositions: coating or plastic
Coating or plastic compositions
Carbohydrate or derivative containing
106169, 106170, 106197R, 424 33, 424 35, 524312, 524385, 524388, 524377, 524490, C08L 128, C08L 114, C08L 3906, C08L 3104
Patent
active
043303382
ABSTRACT:
Pharmaceutical coatings in the form of aqueous dispersion of a water insoluble polymer prepared by dissolving the polymer in a water immiscible organic solvent, emulsifying the organic solution in water, optionally with the aid of additives, and stripping the organic solvent from the system to provide a colloidal, or near colloidal, aqueous dispersion or latex of small, even sized polymeric particles which are applied to pharmaceutical dosages from highly loaded latices. The latexes, which display resistance to bacterial and mold growth and, when combined with selected additives, provides convenient, attractive coating compositions which afford excellent protection and varied release properties to pharmaceutical dosages.
REFERENCES:
patent: 3449489 (1969-06-01), Gaunt
patent: 3522070 (1970-07-01), Webb
patent: 3539380 (1970-11-01), Johnson
patent: 3640741 (1972-02-01), Etes
patent: 3935326 (1976-01-01), Groppenbacher et al.
patent: 4177177 (1979-12-01), Vanderhoff et al.
patent: 4252786 (1981-02-01), Weiss et al.
Harris Robert E.
Hoke V. P.
Nesbitt John R.
Purdue Research Foundation
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