JPS5762224A - Preparation of drug of enteric coating - Google Patents

Preparation of drug of enteric coating

Info

Publication number
JPS5762224A
JPS5762224A JP13793680A JP13793680A JPS5762224A JP S5762224 A JPS5762224 A JP S5762224A JP 13793680 A JP13793680 A JP 13793680A JP 13793680 A JP13793680 A JP 13793680A JP S5762224 A JPS5762224 A JP S5762224A
Authority
JP
Japan
Prior art keywords
cellulose derivative
ammonia
enteric
drug
cellulose
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP13793680A
Other languages
Japanese (ja)
Inventor
Kazutoshi Toya
Kiyoto Jinushi
Nobuo Uchiyama
Takayoshi Mitsunaga
Tadashi Umetsu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to JP13793680A priority Critical patent/JPS5762224A/en
Publication of JPS5762224A publication Critical patent/JPS5762224A/en
Pending legal-status Critical Current

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  • Medicinal Preparation (AREA)

Abstract

PURPOSE: To obtain drugs of the titled coating without using an organic solvent, causing any fear of fire or explosion, bringing about any environmental pollution and pollution of operational environment, by using a solution obtained by dispersing an enteric cellulose derivative having a specific particle diameter into an ammonia- containing aqueous solution.
CONSTITUTION: An enteric cellulose derivative, e.g., hydroxypropyl-methyl cellulose phthalate, carboxymethylethyl cellulose, etc. is made into fine divided power having an average particle diameter ≤150μm preferably ≤50μm,. and dispersed to an ammonia-containing solution. The prepared dispersion is used to coat a solid pharmaceutical preparation, to give a drug of enteric coating. The amount of ammonia used is preferably an amount to give the pH of the dispersion in a range from a pH of 0.5 higher than the pH obtained by dispersing the cellulose derivative to the minimum pH required to dissolve the cellulose derivative.
COPYRIGHT: (C)1982,JPO&Japio
JP13793680A 1980-10-01 1980-10-01 Preparation of drug of enteric coating Pending JPS5762224A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13793680A JPS5762224A (en) 1980-10-01 1980-10-01 Preparation of drug of enteric coating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13793680A JPS5762224A (en) 1980-10-01 1980-10-01 Preparation of drug of enteric coating

Publications (1)

Publication Number Publication Date
JPS5762224A true JPS5762224A (en) 1982-04-15

Family

ID=15210157

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13793680A Pending JPS5762224A (en) 1980-10-01 1980-10-01 Preparation of drug of enteric coating

Country Status (1)

Country Link
JP (1) JPS5762224A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59193832A (en) * 1983-04-18 1984-11-02 Sankyo Co Ltd Preparation of enteric drug
WO2003042248A1 (en) * 2001-11-15 2003-05-22 Samsung Fine Chemicals Co., Ltd. Preparation method of solvent-free water-dispersible hydroxypropyl methyl cellulose phthalate nanoparticle
WO2005074395A3 (en) * 2004-02-10 2006-06-22 Samsung Fine Chemicals Co Ltd Method of preparing aqueous dispersion of hydroxypropyl methyl cellulose phthalate nanoparticle composition

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59193832A (en) * 1983-04-18 1984-11-02 Sankyo Co Ltd Preparation of enteric drug
WO2003042248A1 (en) * 2001-11-15 2003-05-22 Samsung Fine Chemicals Co., Ltd. Preparation method of solvent-free water-dispersible hydroxypropyl methyl cellulose phthalate nanoparticle
US6893493B2 (en) 2001-11-15 2005-05-17 Samsung Fine Chemicals Co., Ltd. Preparation method of solvent-free water-dispersible hydroxypropyl methyl cellulose phthalate nanoparticle
WO2005074395A3 (en) * 2004-02-10 2006-06-22 Samsung Fine Chemicals Co Ltd Method of preparing aqueous dispersion of hydroxypropyl methyl cellulose phthalate nanoparticle composition

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