JPS5659801A - New production process of cellulose acetate - Google Patents
New production process of cellulose acetateInfo
- Publication number
- JPS5659801A JPS5659801A JP13605979A JP13605979A JPS5659801A JP S5659801 A JPS5659801 A JP S5659801A JP 13605979 A JP13605979 A JP 13605979A JP 13605979 A JP13605979 A JP 13605979A JP S5659801 A JPS5659801 A JP S5659801A
- Authority
- JP
- Japan
- Prior art keywords
- acid
- mixture
- activation
- cellulose acetate
- 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
Links
Abstract
PURPOSE: To produce cellulose acetate in a short time and to make it possible to utilize a somewhat low grade material, by acetylating activation-treated cellulose with an acid mixture containing a small amount of an acid catalyst at high temperatures and hydrolyzing the product at high temperatures to effect aging.
CONSTITUTION: A cellulose material is subjected to activation treatment by adding thereto about 1/4 time the weight of the material, of acetic acid or a mixture of acetic and sulfuric acid and stirring the mixture for about 20W60min. The activation-treated cellulose is then acetylated by adding thereto an acid mixture containing 2W4 times of acetic anhydride and up to 1/20 time of an acid catalyst, heating the reaction mixture to a final temperature of 50W85°C over 20W60min and maintaining the reaction mixture at this temperature for 3W20min.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13605979A JPS5659801A (en) | 1979-10-22 | 1979-10-22 | New production process of cellulose acetate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13605979A JPS5659801A (en) | 1979-10-22 | 1979-10-22 | New production process of cellulose acetate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5659801A true JPS5659801A (en) | 1981-05-23 |
Family
ID=15166227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13605979A Pending JPS5659801A (en) | 1979-10-22 | 1979-10-22 | New production process of cellulose acetate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5659801A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6803458B2 (en) | 2000-03-27 | 2004-10-12 | Daicel Chemical Industries, Ltd. | Cellulose acetates and process for producing the cellulose acetates |
| JP2009096905A (en) * | 2007-10-18 | 2009-05-07 | National Institute Of Advanced Industrial & Technology | Method for producing cellulosic porous material and production apparatus |
| WO2014142166A1 (en) * | 2013-03-13 | 2014-09-18 | 株式会社ダイセル | Low-substituted cellulose acetate |
| WO2018139319A1 (en) | 2017-01-25 | 2018-08-02 | 株式会社ダイセル | Method for producing cellulose acetate flakes |
| WO2018139317A1 (en) | 2017-01-25 | 2018-08-02 | 株式会社ダイセル | Cellulose acetate, and molded article |
| WO2018139318A1 (en) | 2017-01-25 | 2018-08-02 | 株式会社ダイセル | Cellulose acetate, cellulose acetate composition, molded article, and film |
| US10869883B2 (en) | 2013-12-20 | 2020-12-22 | Daicel Corporation | Nutrient composition having lipid metabolism-improving action |
-
1979
- 1979-10-22 JP JP13605979A patent/JPS5659801A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6803458B2 (en) | 2000-03-27 | 2004-10-12 | Daicel Chemical Industries, Ltd. | Cellulose acetates and process for producing the cellulose acetates |
| JP2009096905A (en) * | 2007-10-18 | 2009-05-07 | National Institute Of Advanced Industrial & Technology | Method for producing cellulosic porous material and production apparatus |
| US10703825B2 (en) | 2013-03-13 | 2020-07-07 | Daicel Corporation | Cellulose acetate with a low degree of substitution |
| WO2014142166A1 (en) * | 2013-03-13 | 2014-09-18 | 株式会社ダイセル | Low-substituted cellulose acetate |
| JP5921762B2 (en) * | 2013-03-13 | 2016-05-24 | 株式会社ダイセル | Low substituted cellulose acetate |
| JP2016169386A (en) * | 2013-03-13 | 2016-09-23 | 株式会社ダイセル | Low-substituted acetylcellulose |
| JPWO2014142166A1 (en) * | 2013-03-13 | 2017-02-16 | 株式会社ダイセル | Low substituted cellulose acetate |
| JP2018119160A (en) * | 2013-03-13 | 2018-08-02 | 株式会社ダイセル | Low-substituted acetylcellulose |
| US10869883B2 (en) | 2013-12-20 | 2020-12-22 | Daicel Corporation | Nutrient composition having lipid metabolism-improving action |
| WO2018139319A1 (en) | 2017-01-25 | 2018-08-02 | 株式会社ダイセル | Method for producing cellulose acetate flakes |
| JP2018119053A (en) * | 2017-01-25 | 2018-08-02 | 株式会社ダイセル | Cellulose acetate and molding |
| WO2018139318A1 (en) | 2017-01-25 | 2018-08-02 | 株式会社ダイセル | Cellulose acetate, cellulose acetate composition, molded article, and film |
| WO2018139317A1 (en) | 2017-01-25 | 2018-08-02 | 株式会社ダイセル | Cellulose acetate, and molded article |
| US11440973B2 (en) | 2017-01-25 | 2022-09-13 | Daicel Corporation | Cellulose acetate, cellulose acetate composition, molded article, and film |
| US11773239B2 (en) | 2017-01-25 | 2023-10-03 | Daicel Corporation | Cellulose acetate and molded article |
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