JPS5763301A - Cellulose ether acidic succinoyl and acidic phthaloyl mixed ester - Google Patents

Cellulose ether acidic succinoyl and acidic phthaloyl mixed ester

Info

Publication number
JPS5763301A
JPS5763301A JP13967280A JP13967280A JPS5763301A JP S5763301 A JPS5763301 A JP S5763301A JP 13967280 A JP13967280 A JP 13967280A JP 13967280 A JP13967280 A JP 13967280A JP S5763301 A JPS5763301 A JP S5763301A
Authority
JP
Japan
Prior art keywords
acidic
groups
phthaloyl
succinoyl
cellulose ether
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.)
Granted
Application number
JP13967280A
Other languages
Japanese (ja)
Other versions
JPH0128043B2 (en
Inventor
Yoshiro Onda
Yasuaki Muto
Kazumasa Maruyama
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.)
Shin-Etsu Chemical Co Ltd
Original Assignee
Shin-Etsu 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 Shin-Etsu Chemical Co Ltd filed Critical Shin-Etsu Chemical Co Ltd
Priority to JP13967280A priority Critical patent/JPS5763301A/en
Publication of JPS5763301A publication Critical patent/JPS5763301A/en
Publication of JPH0128043B2 publication Critical patent/JPH0128043B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Medicinal Preparation (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

PURPOSE: A novel type composition that is produced by esterifying a cellulose ether substituted with a lkyl groups with both succinic anhydride and phthalic anhydride, thus giving high flexible and tough coating films and rapidly dissolving in an alkaline solution.
CONSTITUTION: The esterification of a cellulose ether substituted with alkyl groups and/or hydroxyalkyl groups, preferably the number of substituting alkyl groups is less than 2.5per glucose unit, with succinic anhydride and phthalic anhydride is effected in a carboxylic acid as a reaction medium in the presence of a catalyst of alkali metal salt of carboxylic acid to produce mixed ester containing acidic succinoyl groups of formulaIand acidic phthaloyl groups of formula II, preferably average numbers of substituting acidic succinoyl groups and acidic phthaloyl groups are 0.1W2.0 and 0.1W2.0per glucose unit respectively.
USE: Production of capsules and enteric medicines.
COPYRIGHT: (C)1982,JPO&Japio
JP13967280A 1980-10-06 1980-10-06 Cellulose ether acidic succinoyl and acidic phthaloyl mixed ester Granted JPS5763301A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13967280A JPS5763301A (en) 1980-10-06 1980-10-06 Cellulose ether acidic succinoyl and acidic phthaloyl mixed ester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13967280A JPS5763301A (en) 1980-10-06 1980-10-06 Cellulose ether acidic succinoyl and acidic phthaloyl mixed ester

Publications (2)

Publication Number Publication Date
JPS5763301A true JPS5763301A (en) 1982-04-16
JPH0128043B2 JPH0128043B2 (en) 1989-05-31

Family

ID=15250727

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13967280A Granted JPS5763301A (en) 1980-10-06 1980-10-06 Cellulose ether acidic succinoyl and acidic phthaloyl mixed ester

Country Status (1)

Country Link
JP (1) JPS5763301A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017065037A1 (en) * 2015-10-16 2017-04-20 コニカミノルタ株式会社 Biocompatible resin
JP2018507305A (en) * 2015-03-16 2018-03-15 ダウ グローバル テクノロジーズ エルエルシー Process for preparing esterified cellulose ethers in the presence of aliphatic carboxylic acids
JP2018507307A (en) * 2015-03-16 2018-03-15 ダウ グローバル テクノロジーズ エルエルシー Water-soluble esterified cellulose ether
JP2018507306A (en) * 2015-03-16 2018-03-15 ダウ グローバル テクノロジーズ エルエルシー Water-soluble esterified cellulose ether with low degree of neutralization
JP2018509506A (en) * 2015-03-16 2018-04-05 ダウ グローバル テクノロジーズ エルエルシー Gelation of esterified cellulose ether
JP2018510853A (en) * 2015-03-16 2018-04-19 ダウ グローバル テクノロジーズ エルエルシー Aqueous solution of esterified cellulose ether
JP2023159903A (en) * 2022-04-21 2023-11-02 信越化学工業株式会社 Method for producing hydroxypropyl methylcellulose acetate succinate

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018507305A (en) * 2015-03-16 2018-03-15 ダウ グローバル テクノロジーズ エルエルシー Process for preparing esterified cellulose ethers in the presence of aliphatic carboxylic acids
JP2018507307A (en) * 2015-03-16 2018-03-15 ダウ グローバル テクノロジーズ エルエルシー Water-soluble esterified cellulose ether
JP2018507306A (en) * 2015-03-16 2018-03-15 ダウ グローバル テクノロジーズ エルエルシー Water-soluble esterified cellulose ether with low degree of neutralization
JP2018509506A (en) * 2015-03-16 2018-04-05 ダウ グローバル テクノロジーズ エルエルシー Gelation of esterified cellulose ether
JP2018510853A (en) * 2015-03-16 2018-04-19 ダウ グローバル テクノロジーズ エルエルシー Aqueous solution of esterified cellulose ether
WO2017065037A1 (en) * 2015-10-16 2017-04-20 コニカミノルタ株式会社 Biocompatible resin
JPWO2017065037A1 (en) * 2015-10-16 2018-08-02 コニカミノルタ株式会社 Biocompatible resin
JP2023159903A (en) * 2022-04-21 2023-11-02 信越化学工業株式会社 Method for producing hydroxypropyl methylcellulose acetate succinate

Also Published As

Publication number Publication date
JPH0128043B2 (en) 1989-05-31

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