CA2070390C - Procede pour la preparation d'esters cellulosiques - Google Patents
Procede pour la preparation d'esters cellulosiquesInfo
- Publication number
- CA2070390C CA2070390C CA 2070390 CA2070390A CA2070390C CA 2070390 C CA2070390 C CA 2070390C CA 2070390 CA2070390 CA 2070390 CA 2070390 A CA2070390 A CA 2070390A CA 2070390 C CA2070390 C CA 2070390C
- Authority
- CA
- Canada
- Prior art keywords
- anhydride
- cellulose
- mixture
- equivalents
- component
- 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.)
- Expired - Fee Related
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
- C08B3/16—Preparation of mixed organic cellulose esters, e.g. cellulose aceto-formate or cellulose aceto-propionate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B11/00—Preparation of cellulose ethers
- C08B11/02—Alkyl or cycloalkyl ethers
- C08B11/04—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals
- C08B11/08—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals with hydroxylated hydrocarbon radicals; Esters, ethers, or acetals thereof
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
L'invention concerne un procédé pour préparer des esters de cellulose en utilisant un anhydride acylique et un anhydride trifluoroacétique en tant qu'agent agitateur. L'invention comprend la formation d'un triester de cellulose suivi ou non d'une phase d'hydrolyse. En outre, on peut préparer directement un ester de cellulose ayant un degré de substitution pratiquement inférieur à 3, en utilisant, en plus, un acide trifluoroacétique.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US49518690A | 1990-03-19 | 1990-03-19 | |
US495,186 | 1990-03-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2070390A1 CA2070390A1 (fr) | 1991-09-20 |
CA2070390C true CA2070390C (fr) | 1999-03-30 |
Family
ID=23967619
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2070390 Expired - Fee Related CA2070390C (fr) | 1990-03-19 | 1991-03-13 | Procede pour la preparation d'esters cellulosiques |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0522009A1 (fr) |
JP (1) | JPH05506046A (fr) |
CA (1) | CA2070390C (fr) |
WO (1) | WO1991014709A1 (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104277122B (zh) * | 2013-07-11 | 2016-08-10 | 南通醋酸纤维有限公司 | 溶于丙酮的纤维素酯的直接合成方法及其产品 |
CN105199001B (zh) * | 2014-06-19 | 2019-01-01 | 南通醋酸纤维有限公司 | 一种纤维素长链脂肪酸酯或长短链混合酸酯的制备方法 |
PL3064540T3 (pl) * | 2015-03-05 | 2018-11-30 | Lanxess Deutschland Gmbh | Preparaty estru celulozy zapobiegające rozprzestrzenianiu się płomieni |
CN110475791B (zh) * | 2017-03-29 | 2021-12-21 | 伊士曼化工公司 | 区域选择性取代的纤维素酯 |
ES2908713T3 (es) | 2017-12-04 | 2022-05-03 | Lg Chemical Ltd | Procedimiento para producir la composición destinada a formar la capa activa de la membrana de separación de gases, la composición para formar la capa activa de la membrana de separación de gases producida por la misma, el procedimiento para fabricar la membrana de separación de gases y la membrana de separación de gases |
FR3136465A1 (fr) * | 2022-06-14 | 2023-12-15 | Université De Lorraine | Procédé de préparation d’un matériau cellulosique thermoplastique |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2581565A (en) * | 1952-01-08 | Cellulose vestoees | ||
US2629716A (en) * | 1948-07-07 | 1953-02-24 | Du Pont | Preparation and hydrolysis of esters |
JPS6017441B2 (ja) * | 1981-07-10 | 1985-05-02 | ダイセル化学工業株式会社 | 新規なセルロ−スアセテ−トの製造方法 |
-
1991
- 1991-03-13 WO PCT/US1991/001667 patent/WO1991014709A1/fr not_active Application Discontinuation
- 1991-03-13 JP JP91507216A patent/JPH05506046A/ja active Pending
- 1991-03-13 CA CA 2070390 patent/CA2070390C/fr not_active Expired - Fee Related
- 1991-03-13 EP EP19910907133 patent/EP0522009A1/fr not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
EP0522009A1 (fr) | 1993-01-13 |
CA2070390A1 (fr) | 1991-09-20 |
WO1991014709A1 (fr) | 1991-10-03 |
JPH05506046A (ja) | 1993-09-02 |
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US6160111A (en) | Process for preparing cellulose esters using a sulfonic acid resin catalyst | |
WO1991016356A1 (fr) | Preparation d'esters de cellulose de faible poids moleculaire | |
US2629716A (en) | Preparation and hydrolysis of esters | |
Hall et al. | Preparation of cellulose triacetate and cellulose tricarbanilate by nondegradative methods | |
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EP0895514B1 (fr) | Procede de preparation d'alcanoates d'acetoacetate de cellulose | |
JPH0433901A (ja) | セルロース誘導体及びコーテイング材料 | |
US2300213A (en) | Boron fluoride complex as catalyst for the esterification of cellulose | |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |