Powdery material for preparing drug-coating solution

Details Powdery material for preparing drug-coating solution Powdery material for preparing drug-coating solution

1993-03-12

1994-12-13

Page, Thurman K.

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Carbohydrate doai

424490, 424480, 424468, A01N 4304

Patent

active

053729986

ABSTRACT:
The present invention provides a powdery starting material for preparing a drug-coating solution, which has high safety as a drug component and is very rapidly dissolved in room temperature water upon preparation of a coating solution. The powdery starting material for preparing a drug-coating solution comprises hydroxypropylmethyl cellulose and/or methyl cellulose particles having an average particle size ranging from 200 to 1000 .mu.m and whose content of particles having a particle size of 75 .mu.m or smaller is not more than 30% by weight. More preferably, the viscosity of a 2% by weight aqueous solution of the powdery starting material as determined at room temperature ranges from 2 to 60 cP and preferably 2 to 20 cP.

REFERENCES:
patent: 3907983 (1975-09-01), Seth
patent: 5017383 (1991-05-01), Ozawa
patent: 5093200 (1992-03-01), Watanabe

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