Aqueous coating dispersions

Details Aqueous coating dispersions Aqueous coating dispersions

1987-05-29

1988-04-12

Michl, Paul R.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Matrices

524547, 524555, 526287, 5262922, 52629295, 424497, A61K 932

Patent

active

047373571

ABSTRACT:
Aqueous dispersions of a water-swellable but water-insoluble polymer formed between a quaternary ammonium monomer and a nonionic monomer; methods for making such dispersions by dispersing said copolymers, in the form of a powder, in water; methods for coating pharmaceutical cores, powders, or granules with such dispersions; and coated pharmaceutical products made by such methods.

REFERENCES:
patent: 3287305 (1966-11-01), Maeder
patent: 3520970 (1970-07-01), Lehmann et al.
patent: 4077930 (1978-03-01), Lim
patent: 4251651 (1981-02-01), Kawakami
patent: 4305860 (1981-12-01), Iovine
patent: 4444954 (1984-04-01), Mels
patent: 4444955 (1984-04-01), Mels
patent: 4452862 (1984-06-01), Markert et al.
patent: 4520172 (1985-05-01), Lehmann et al.
patent: 4548981 (1985-10-01), Kolesinski
patent: 4617362 (1986-10-01), Becker

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