GB458596A - Improvements in the manufacture of cellulose derivatives and products obtained therefrom - Google Patents
Improvements in the manufacture of cellulose derivatives and products obtained therefromInfo
- Publication number
- GB458596A GB458596A GB1797935A GB1797935A GB458596A GB 458596 A GB458596 A GB 458596A GB 1797935 A GB1797935 A GB 1797935A GB 1797935 A GB1797935 A GB 1797935A GB 458596 A GB458596 A GB 458596A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cellulose
- ether
- class
- acid
- acetic
- 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
- C08B13/00—Preparation of cellulose ether-esters
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)
- Laminated Bodies (AREA)
Abstract
Cellulose ether-esters are prepared by subjecting to esterification a partial ether of cellulose, other than an ether containing oxyalkyl groups, produced under substantially anhydrous conditions in the presence of an organic base. Suitable cellulose ethers are those obtained by the process described in Specification 458,597. The ethers preferably contain only a small proportion of ether groups, for example, \ba1/4\be to \ba1/2\be up to about 1 ether group per cellulose molecule. The esterification may be carried out by means of an acid anhydride, such as acetic, propionic, or benzoic anhydride, in the presence of sulphuric acid as a catalyst. The primary cellulose ether-esters may be employed directly for the manufacture of artificial filaments, films, and the like, or may first be ripened. In examples: (1) an ethyl cellulose produced under anhydrous conditions in the presence of an organic base and containing 0,8 ethyl groups per molecule, p is esterified by means of acetic anhydride in the presence of acetic acid and sulphuric acid, and (2) an ethyl cellulose containing one ether group per molecule, prepared by the process described in Specification 458,597, is esterified by means of acetic anhydride in the presence of acetic acid, ferric chloride and hydrochloric acid. Specifications 207,562, 308,322, 308,323, 309,201, 312,095, 312,096, 312,098, [all in Class 2 (ii)], 314,446, 314,447, [both in Class 15 (ii)], 316,521, 318,468, [both in Class 2 (ii)], 323,790, [Class 2 (iii)], 340,324, 340,325, 340,436, 340,437, 351,417, 370,430, 380,504, 380,505, 389,823, 402,104, 402,106, 428,224, 429,103, 430,349, 430,350, 430,351, 430,352, 430,489, 432,027, 432,028, 438,584, 438,585, 438,586, 438,587, 438,655, 438,656, 443,707, and 443,773 also are referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1797935A GB458596A (en) | 1935-06-22 | 1935-06-22 | Improvements in the manufacture of cellulose derivatives and products obtained therefrom |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1797935A GB458596A (en) | 1935-06-22 | 1935-06-22 | Improvements in the manufacture of cellulose derivatives and products obtained therefrom |
Publications (1)
Publication Number | Publication Date |
---|---|
GB458596A true GB458596A (en) | 1936-12-22 |
Family
ID=10104545
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1797935A Expired GB458596A (en) | 1935-06-22 | 1935-06-22 | Improvements in the manufacture of cellulose derivatives and products obtained therefrom |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB458596A (en) |
-
1935
- 1935-06-22 GB GB1797935A patent/GB458596A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB458596A (en) | Improvements in the manufacture of cellulose derivatives and products obtained therefrom | |
GB467160A (en) | Improvement in high viscosity organic esters of cellulose and process of preparing them | |
GB543311A (en) | Improvements in or relating to the production of organic esters of cellulose | |
GB446949A (en) | Improvements in or relating to the production of esters of cellulose | |
GB449066A (en) | Improvements in method of making organic esters of cellulose | |
GB518149A (en) | Improvements relating to the manufacture of ethylene derivatives | |
GB321575A (en) | Process for the manufacture of cellulose esters | |
GB521884A (en) | Improvements in or relating to the manufacture of cellulose esters | |
GB491488A (en) | Improvements in and relating to cellulose derivatives and shaped structures made therefrom | |
GB396657A (en) | Process for the manufacture of cellulose esters | |
GB419763A (en) | Manufacture of cellulose esters | |
GB342738A (en) | Improvements in or relating to the manufacture of cellulose esters and cellulose ester products therefrom | |
GB331260A (en) | Process of manufacture of cellulose esters | |
GB549991A (en) | Improvements in or relating to the manufacture of cellulose esters | |
GB489720A (en) | Improvements in or relating to the manufacture of cellulose esters | |
GB341147A (en) | ||
GB615602A (en) | Improvements in and relating to a process for the manufacture of mixed esters of cellulose and of films thereof | |
GB538959A (en) | Improvements in the production of cellulose esters | |
GB420099A (en) | Improvements in the manufacture of cellulose derivatives | |
GB362489A (en) | Process for the manufacture of stable organic acid esters of cellulose | |
GB524488A (en) | Dyestuffs and method of making the same | |
GB531014A (en) | Improvements in or relating to the manufacture of cellulose derivatives | |
GB568098A (en) | Improvements in the production of organic esters of cellulose | |
GB372844A (en) | Improvements in or relating to the manufacture of cellulose acetate | |
GB402730A (en) | Manufacture of cellulose esters |