Microcapsules for the controlled release of acetylsalicyclic aci

Details Microcapsules for the controlled release of acetylsalicyclic aci Microcapsules for the controlled release of acetylsalicyclic aci

1994-04-13

1997-02-18

Page, Thurman K.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Particulate form

424490, 424468, 424457, A61K 914

Patent

active

056039573

ABSTRACT:
The present invention relates to controlled-release microcapsules of acetylsalicylic acid which comprise particles of acetylsalicylic acid with a size of between 100 and 1000 .mu.m, coated with a coating material consisting of a mixture of a cellulosic film-forming polymeric derivative, an antiadherent, a plasticizer, a lubricant and a vinylic film-forming polymeric derivative. The invention further relates to a process for the preparation of said microcapsules.

REFERENCES:
patent: 4693896 (1987-09-01), Wheatley et al.
patent: 5158636 (1992-10-01), Groitzch et al.
patent: 5206030 (1993-04-01), Wheatley et al.
patent: 5248516 (1993-09-01), Wheatley et al.

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