AU6620298A - Method for producing cellulose acetate - Google Patents
Method for producing cellulose acetateInfo
- Publication number
- AU6620298A AU6620298A AU66202/98A AU6620298A AU6620298A AU 6620298 A AU6620298 A AU 6620298A AU 66202/98 A AU66202/98 A AU 66202/98A AU 6620298 A AU6620298 A AU 6620298A AU 6620298 A AU6620298 A AU 6620298A
- Authority
- AU
- Australia
- Prior art keywords
- cellulose acetate
- cellulose
- base
- acetylation
- producing 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.)
- Abandoned
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B3/00—Preparation of cellulose esters of organic acids
- C08B3/06—Cellulose acetate, e.g. mono-acetate, di-acetate or tri-acetate
Abstract
The invention relates to a method for producing cellulose acetate with a DS between 1.5 and 2.9 by reacting cellulose with an acetylation agent. According to said method, the cellulose is reacted with a first acetylation agent using a base catalyst in a first step, to form a cellulose acetate with a DS of less than 1, and then reacted with a second acetylation agent using an acid catalyst in a second step to form a cellulose acetate with a DS of 1.5 to 2.9. The first and second acetylation agents are preferably acetic anhydride. The cellulose is preferably impregnated with an excess base in the first step, said base then being removed until the quantity of base which is stoichiometrically necessary to form the cellulose acetate with a DS<1 is achieved.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19711502 | 1997-03-19 | ||
| DE19711502A DE19711502C1 (en) | 1997-03-19 | 1997-03-19 | Process for the production of cellulose acetate |
| PCT/EP1998/000607 WO1998041543A1 (en) | 1997-03-19 | 1998-02-04 | Method for producing cellulose acetate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU6620298A true AU6620298A (en) | 1998-10-12 |
Family
ID=7823932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU66202/98A Abandoned AU6620298A (en) | 1997-03-19 | 1998-02-04 | Method for producing cellulose acetate |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0970129B1 (en) |
| JP (1) | JP2000511588A (en) |
| AT (1) | ATE207936T1 (en) |
| AU (1) | AU6620298A (en) |
| BR (1) | BR9808353A (en) |
| CA (1) | CA2283980A1 (en) |
| DE (2) | DE19711502C1 (en) |
| WO (1) | WO1998041543A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005054297A2 (en) * | 2003-11-28 | 2005-06-16 | Eastman Chemical Company | Cellulose interpolymers and method of oxidation |
| JP5757681B2 (en) | 2009-08-12 | 2015-07-29 | 富士フイルム株式会社 | CELLULOSE DERIVATIVE, RESIN COMPOSITION, MOLDED BODY, PROCESS FOR PRODUCING THE SAME, AND CASE FOR ELECTRICAL / Electronic Equipment |
| JP5470032B2 (en) | 2009-08-12 | 2014-04-16 | 富士フイルム株式会社 | Cellulose derivative, thermoforming material, molded body, method for producing the same, and casing for electric and electronic equipment |
| US20130096296A1 (en) * | 2011-10-14 | 2013-04-18 | Celanese Acetate Llc | Methods for Synthesizing Acylated Cellulose Through Instillation of an Acidic Catalyst |
| US20130096297A1 (en) * | 2011-10-14 | 2013-04-18 | Celanese Acetate Llc | Methods for Synthesizing Acylated Cellulose Through Instillation of an Acidic Catalyst |
| US20130096298A1 (en) * | 2011-10-14 | 2013-04-18 | Celanese Acetate Llc | Methods for Synthesizing Acylated Cellulose Through Instillation of an Acidic Catalyst |
| JP6802720B2 (en) | 2017-01-25 | 2020-12-16 | 株式会社ダイセル | Cellulose acetate and moldings |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE562712C (en) * | 1927-11-25 | 1932-10-28 | Otto Faust Dr | Process for the refinement of cellulose raw material of all kinds |
-
1997
- 1997-03-19 DE DE19711502A patent/DE19711502C1/en not_active Expired - Fee Related
-
1998
- 1998-02-04 WO PCT/EP1998/000607 patent/WO1998041543A1/en active IP Right Grant
- 1998-02-04 JP JP10540055A patent/JP2000511588A/en active Pending
- 1998-02-04 AT AT98908057T patent/ATE207936T1/en not_active IP Right Cessation
- 1998-02-04 BR BR9808353-8A patent/BR9808353A/en unknown
- 1998-02-04 DE DE59801963T patent/DE59801963D1/en not_active Expired - Fee Related
- 1998-02-04 AU AU66202/98A patent/AU6620298A/en not_active Abandoned
- 1998-02-04 EP EP98908057A patent/EP0970129B1/en not_active Expired - Lifetime
- 1998-02-04 CA CA002283980A patent/CA2283980A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000511588A (en) | 2000-09-05 |
| EP0970129A1 (en) | 2000-01-12 |
| EP0970129B1 (en) | 2001-10-31 |
| DE59801963D1 (en) | 2001-12-06 |
| WO1998041543A1 (en) | 1998-09-24 |
| CA2283980A1 (en) | 1998-09-24 |
| DE19711502C1 (en) | 1998-07-30 |
| ATE207936T1 (en) | 2001-11-15 |
| BR9808353A (en) | 2000-05-23 |
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