GB269529A - Improved manufacture of cellulose derivatives, and the products thereof, and articles or objects made with same - Google Patents
Improved manufacture of cellulose derivatives, and the products thereof, and articles or objects made with sameInfo
- Publication number
- GB269529A GB269529A GB9684/27A GB968427A GB269529A GB 269529 A GB269529 A GB 269529A GB 9684/27 A GB9684/27 A GB 9684/27A GB 968427 A GB968427 A GB 968427A GB 269529 A GB269529 A GB 269529A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- sulphuric acid
- acids
- added
- sulphuric
- 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
- C08B5/00—Preparation of cellulose esters of inorganic acids, e.g. phosphates
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)
- Treatments Of Macromolecular Shaped Articles (AREA)
Abstract
269,529. British Celanese, Ltd., (Assignees of Miles, G. W., and Dreyfus, C.). April 14, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Paper, treating with special materials.-Paper when treated with one or more inorganic acids in the presence of one or more phosphoric acids, especially orthophosphoric acid preferably with the addition of metaphosphoric acid, acquires the property of withstanding the action of sea water. As inorganic acids there may be used monobasic acids such as nitric acid, or dibasic or polybasic acids such as sulphuric acid, ethyl-sulphuric acid, benzene sulphonic acid or para-toluene sulphonic acid; and the esterification may be facilitated by pretreatment of the cellulose &c., for instance with glacial acetic acid containing a small percentage of sulphuric acid, or with orthophosphoric acid with or without a small percentage of sulphuric acid. Contact or catalytic agents may be added to the reaction mixture, for example, there may be added a small quantity of sulphuric acid. The esterification is preferably carried out at low temperatures although higher temperatures may be employed; but it is preferred to work at low temperatures if sulphuric acid has been added as contact agent.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US269529XA | 1926-04-14 | 1926-04-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB269529A true GB269529A (en) | 1927-11-17 |
Family
ID=21834778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9684/27A Expired GB269529A (en) | 1926-04-14 | 1927-04-08 | Improved manufacture of cellulose derivatives, and the products thereof, and articles or objects made with same |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB269529A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2428829A (en) * | 1942-02-26 | 1947-10-14 | Berl Walter George | Smokeless powder |
-
1927
- 1927-04-08 GB GB9684/27A patent/GB269529A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2428829A (en) * | 1942-02-26 | 1947-10-14 | Berl Walter George | Smokeless powder |
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