EP0276813A2
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EP
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Method for preparing film coated pharmaceutical preparations and method for improving properties thereof
Assignee: Shin-Etsu Chemical Co Ltd
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Filing: 1988-01-26
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Granted: —
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Expires: 2008-01-26
Abstract
Abstract Film coated pharmaceutical preparations, which are prepared by overlaying to the outer surface of pharmaceutical preparations, a coating layer comprising at least one member selected from the group consisting of methyl cellulose, hydroxypropylmethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose phthalate, hydroxypropylmethyl cellulose acetate succinate, carboxymethylethyl cellulose and cellulose acetate phthalate, are irradiated with light including ultraviolet rays. Whereby film coated pharma-ceutical preparations, the coating layer surface of whichare excellent in whiteness, are prepared. Moreover, as acontent of a white pigment in corporated into the coatinglayer of such preparations may be reduced, the stability ofsuch preparations can be enhanced without impairing thestrength of the coating layer.
Inventors
- 👤 Hiroyasu c/o Shin-Etsu Chemical Co. Kokubo
- 👤 Fujio c/o Shin-Etsu Chemical Co. Sekigawa
- 👤 Tohru c/o Shin-Etsu Chemical Chiba
- 👤 Yoshiro c/o Shin-Etsu Chemical Co.Ltd. Onda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 11:46
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/28; A61K9/2806; A61K9/2833; A61K9/286; A61K9/2866
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
61 words
A method for preparing film coated pharmaceutical preperations comprises overlaying, to the outer surface of pharmaceutical preparations, a coating layer comprising at least one member selected from the group consisting of methyl cellulose, hydropropylmethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose phthalate, hydroxypropylmethyl cellulose acetate succinate, carboxymethylethyl cellulose and cellulose acetate phthalate and simultaneously irradiating the pharmaceutical preparations with ligt including ultraviolet rays.
Claim 2
Independent Claim
61 words
A method for preparing film coated pharmaceutical preperations comprises overlaying, to the outer surface of pharmaceutical preparations, a coating layer comprising at least one member selected from the group consisting of methyl cellulose, hydropropylmethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose phthalate, hydroxypropylmethyl cellulose acetate succinate, carboxymethylethyl cellulose and cellulose acetate phthalate and simultaneously irradiating the pharmaceutical preparations with ligt including ultraviolet rays.
Claim 3
Independent Claim
65 words
A method for preparing film coated pharmaceutical preperations comprises overlaying, to the outer surface of pharmaceutical preparations, a coating layer comprising at least one member selected from the group consisting of methyl cellulose, hydroxypropylmethyl cellulose, hydroxypropyl cellulose, hydroxpropylmethyl cellulose phthalate, hydroxypropylmethyl cellulose acetate succinate carboxymethylethyl cellulose and cellulose acetate phthalate and then drying the film coated pharmaceutical preparations while irradiating with light including ultraviolet rays.
Claim 4
Independent Claim
65 words
A method for preparing film coated pharmaceutical preperations comprises overlaying, to the outer surface of pharmaceutical preparations, a coating layer comprising at least one member selected from the group consisting of methyl cellulose, hydroxypropylmethyl cellulose, hydroxypropyl cellulose, hydroxpropylmethyl cellulose phthalate, hydroxypropylmethyl cellulose acetate succinate carboxymethylethyl cellulose and cellulose acetate phthalate and then drying the film coated pharmaceutical preparations while irradiating with light including ultraviolet rays.
Claim 5
Dependent Claim
24 words
A method according to claim 1 or 2 in which the wave length of said ultraviolet rays ranges from 200 nm to 380 nm.
Claim 6
Independent Claim
59 words
A method for improving properties of film coated pharmaceutical preperations comprises irradiating, with light including ultraviolet rays, film coated pharmaceutical preparations having on the outer surface thereof, coated films comprised at least one member selected from the group consisting of methyl cellulose, hydroxypropylmethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose phthalate, hydroxypropylmethyl cellulose acetate succinate, carboxymethylethyl cellulose and cellulose acetate phthalate.
Claim 7
Independent Claim
59 words
A method for improving properties of film coated pharmaceutical preperations comprises irradiating, with light including ultraviolet rays, film coated pharmaceutical preparations having on the outer surface thereof, coated films comprised at least one member selected from the group consisting of methyl cellulose, hydroxypropylmethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose phthalate, hydroxypropylmethyl cellulose acetate succinate, carboxymethylethyl cellulose and cellulose acetate phthalate.
Claim 8
Independent Claim
67 words
A method for improving properties of film coated pharmaceutical preperations comprises irradiating, with light including ultraviolet rays, the film coated pharmaceutical preparations having on the outer surface thereof, coated films, which comprise at least one member selected from the group consisting of methyl cellulose, hydroxypropylmethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose phthalate, hydroxypropylmethyl cellulose acetate succinate, carboxymethylethyl cellulose and cellulose acetate phthalate, contain at least 0.3% of moisture.
Claim 9
Independent Claim
67 words
A method for improving properties of film coated pharmaceutical preperations comprises irradiating, with light including ultraviolet rays, the film coated pharmaceutical preparations having on the outer surface thereof, coated films, which comprise at least one member selected from the group consisting of methyl cellulose, hydroxypropylmethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose phthalate, hydroxypropylmethyl cellulose acetate succinate, carboxymethylethyl cellulose and cellulose acetate phthalate, contain at least 0.3% of moisture.
Claim 10
Dependent Claim
24 words
A method according to claim 4 or 5 in which the wave length of said ultraviolet rays ranges from 200 nm to 380 nm.
References Cited (Backward Citations)
No citation records indexed.
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