GB368356A - Improvements in and relating to the nitration of cellulosic material - Google Patents
Improvements in and relating to the nitration of cellulosic materialInfo
- Publication number
- GB368356A GB368356A GB2990730A GB2990730A GB368356A GB 368356 A GB368356 A GB 368356A GB 2990730 A GB2990730 A GB 2990730A GB 2990730 A GB2990730 A GB 2990730A GB 368356 A GB368356 A GB 368356A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- paper
- irregular
- strips
- product
- 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
- C08B5/02—Cellulose nitrate, i.e. nitrocellulose
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)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
Cellulose nitrate is obtained by nitrating with a mixture of nitric and sulphuric acids and water, irregular shreds of parchmentized paper, and thereafter washing the product with dilute alkali, preferably ammonia. The parchmentized paper may be obtained by treating unsized paper with sulphuric acid preferably 55-55,5 DEG B<\>ae., after which it is comminuted into strips of irregular, curved, corrugated or wavy form of about one-quarter inch wide and three to six inches long. The strips are preferably compressed into a bale of considerable density before nitration, which may then be carried out by the displacement method. The cellulose nitrate is washed with water to remove most of the acid and then boiled with water and finally with successive quantities of very dilute ammonia or other alkali until the wash liquid no longer turns yellow. The product may then be bleached using an alkaline agent, for example, alkaline sodium hypochlorite liquor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2990730A GB368356A (en) | 1930-10-06 | 1930-10-06 | Improvements in and relating to the nitration of cellulosic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2990730A GB368356A (en) | 1930-10-06 | 1930-10-06 | Improvements in and relating to the nitration of cellulosic material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB368356A true GB368356A (en) | 1932-03-07 |
Family
ID=10299136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2990730A Expired GB368356A (en) | 1930-10-06 | 1930-10-06 | Improvements in and relating to the nitration of cellulosic material |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB368356A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2691154A1 (en) * | 1992-05-12 | 1993-11-19 | Bergerac Nc Sa | Process for bleaching nitrocellulose, in particular following its production process. |
-
1930
- 1930-10-06 GB GB2990730A patent/GB368356A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2691154A1 (en) * | 1992-05-12 | 1993-11-19 | Bergerac Nc Sa | Process for bleaching nitrocellulose, in particular following its production process. |
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