GB336235A - Improvements relating to nitrocellulose - Google Patents
Improvements relating to nitrocelluloseInfo
- Publication number
- GB336235A GB336235A GB1633329A GB1633329A GB336235A GB 336235 A GB336235 A GB 336235A GB 1633329 A GB1633329 A GB 1633329A GB 1633329 A GB1633329 A GB 1633329A GB 336235 A GB336235 A GB 336235A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pieces
- sheets
- machine
- acid
- nitrocellulose
- 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
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
- D01F2/24—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives
- D01F2/26—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives from nitrocellulose
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
336,235. Picton, N., and Imperial Chemical Industries, Ltd. May 27, 1929. Cellulose nitrates.-Wood pulp board is divided into substantially uniform small pieces without affecting the conglomeration of the fibres, and the small pieces are treated with nitrating acid containing not less than about 40 per cent of nitric acid so as to produce a nitrocellulose of high density and uniform composition which is suitable for the manufacture of propellent powders, blasting explosives, varnishes, finishes, films, leather-cloth, celluloid and linoleum plastics. Sheet wood pulp may be subdivided into uniform pieces by a machine commonly used for cutting sheets of nitrocellulose plastics into powder grains. The pieces may be about oneeighth of an inch square and have a bulk density three or four times that of well-pressed cotton linters. The proportion of nitric acid is varied according to the class of wood from which the pulp is prepared and in the case of hard sheets, the concentration of nitric acid may be 80 per cent of the acid mixture. The volume of acid used may be as low as five times the weight of the cellulose. Nitration may be effected by the pot process and after removing the acid and drowning in water, the product may be stabilized and treated to lower the viscosity in known manner. Alternatively, a displacement or mechanical process or a combined mechanical and displacement process may be used. The product may be finished in the dense condition in which it is formed, or it may be pulped and then finished in the usual manner. Instead of cutting up the wood pulp sheets in a machine used for cutting sheets of nitrocellulose plastics into powder grains, the sheets may be passed through a paper shaving machine to form narrow strips which are then cut into grains by means of a guillotine or by attaching a suitable appliance to the stripcutting machine. The pieces may also be punched out as small discs, or for larger pieces an ordinary guillotine machine may be used.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1738330A GB356252A (en) | 1930-06-05 | 1930-06-05 | Improvements relating to nitrocellulose |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB336235A true GB336235A (en) | 1930-09-29 |
Family
ID=10094227
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1633329A Expired GB336235A (en) | 1930-06-05 | 1929-05-27 | Improvements relating to nitrocellulose |
| GB1738330A Expired GB356252A (en) | 1930-06-05 | 1930-06-05 | Improvements relating to nitrocellulose |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1738330A Expired GB356252A (en) | 1930-06-05 | 1930-06-05 | Improvements relating to nitrocellulose |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB336235A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102321183A (en) * | 2011-08-05 | 2012-01-18 | 四川北方硝化棉股份有限公司 | Wood pulp nitrocotton production method |
| CN113969513A (en) * | 2021-10-28 | 2022-01-25 | 北方化学工业股份有限公司 | Method for breaking nitrocellulose |
-
1929
- 1929-05-27 GB GB1633329A patent/GB336235A/en not_active Expired
-
1930
- 1930-06-05 GB GB1738330A patent/GB356252A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102321183A (en) * | 2011-08-05 | 2012-01-18 | 四川北方硝化棉股份有限公司 | Wood pulp nitrocotton production method |
| CN113969513A (en) * | 2021-10-28 | 2022-01-25 | 北方化学工业股份有限公司 | Method for breaking nitrocellulose |
| CN113969513B (en) * | 2021-10-28 | 2023-07-25 | 北方化学工业股份有限公司 | Method for breaking nitrocellulose |
Also Published As
| Publication number | Publication date |
|---|---|
| GB356252A (en) | 1931-09-07 |
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