GB1139150A - Improvements in or relating to the continuous esterification of cellulose - Google Patents
Improvements in or relating to the continuous esterification of celluloseInfo
- Publication number
- GB1139150A GB1139150A GB5644466A GB5644466A GB1139150A GB 1139150 A GB1139150 A GB 1139150A GB 5644466 A GB5644466 A GB 5644466A GB 5644466 A GB5644466 A GB 5644466A GB 1139150 A GB1139150 A GB 1139150A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diluent
- parts
- cellulose
- mixture
- dec
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B17/00—Apparatus for esterification or etherification of cellulose
- C08B17/04—Apparatus for esterification or etherification of cellulose for making cellulose nitrate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B17/00—Apparatus for esterification or etherification of cellulose
- C08B17/02—Apparatus for esterification or etherification of cellulose for making organic esters of cellulose
-
- 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
1,139,150. Cellulose esters. SOC. RHODIACETA. 16 Dec., 1966 [28 Dec., 1965], No. 56444/66. Heading C3A. Cellulose esters, e.g. triacetate, are produced continuously by first treating the cellulose with all of the required esterification catalyst and with a diluent such that the mixture contains 3-5 parts of diluent per part of cellulose, then adding to the mixture after 5-10 min., 2-3 parts of one or more C 1-4 monocarboxylic acid anhydrides, together with 0-1À5 parts of the diluent, and finally, after 6-10 min. from the anhydride addition, dilating the mixture with 1-4 parts of the diluent. (All parts are by weight.) Specified is acetic anhydride, using acetic acid as diluent; methylene chloride or one or more C 2-4 monocarboxylic acids may partly or wholly replace the acetic acid. The use of 5-7% of a 4: 6 mixture of sulphuric and perchloric acids as catalyst is specified. The process may be conducted in apparatus accordmg to Specification 802,863.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR44077A FR1469149A (en) | 1965-12-28 | 1965-12-28 | Process for the continuous esterification of cellulose |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1139150A true GB1139150A (en) | 1969-01-08 |
Family
ID=8597115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5644466A Expired GB1139150A (en) | 1965-12-28 | 1966-12-16 | Improvements in or relating to the continuous esterification of cellulose |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE691823A (en) |
| DE (1) | DE1593476A1 (en) |
| FR (1) | FR1469149A (en) |
| GB (1) | GB1139150A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2381790A1 (en) * | 1977-02-25 | 1978-09-22 | Crown Zellerbach Corp | Organic acid esters of cellulose prodn. - by esterifying using high energy, frictional interaction of reactants |
| KR950703005A (en) * | 1992-08-07 | 1995-08-23 | 해리 제이. 귀넬 | PROCESS FOR ACETYLATION OF CELLULOSE |
-
1965
- 1965-12-28 FR FR44077A patent/FR1469149A/en not_active Expired
-
1966
- 1966-12-16 GB GB5644466A patent/GB1139150A/en not_active Expired
- 1966-12-20 DE DE19661593476 patent/DE1593476A1/en active Pending
- 1966-12-27 BE BE691823D patent/BE691823A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1593476A1 (en) | 1970-07-23 |
| FR1469149A (en) | 1967-02-10 |
| BE691823A (en) | 1967-06-27 |
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