GB538966A - Improvements in a cupro-ammonium process for the production of artificial filaments - Google Patents
Improvements in a cupro-ammonium process for the production of artificial filamentsInfo
- Publication number
- GB538966A GB538966A GB4056/40A GB405640A GB538966A GB 538966 A GB538966 A GB 538966A GB 4056/40 A GB4056/40 A GB 4056/40A GB 405640 A GB405640 A GB 405640A GB 538966 A GB538966 A GB 538966A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bath
- ammonia
- copper
- water bath
- copper hydroxide
- 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
-
- 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
- D01F2/02—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from solutions of cellulose in acids, bases or salts
- D01F2/04—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from solutions of cellulose in acids, bases or salts from cuprammonium solutions
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/24—Sulfates of ammonium
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G3/00—Compounds of copper
- C01G3/14—Complexes with ammonia
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Artificial Filaments (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
538,966. Artificial silk. ASAHI-BEMBERG KENSHI KABUSHIKI KAISHA. March 4, 1940, No. 4056. Convention date, June 23. 1939. Drawings to Specification. [Class 2 (ii)] In the manufacture of artificial silk from cellulose dissolved in a cuprammonium solution which is spun into a water bath and the spun filaments treated in an acid bath for completing the coagulation and fixation, the cuprammonium solution is prepared from copper hydroxide recovered from the process ; ammonia is removed from the water bath so that the copper hydroxide is deposited and removed from the bath which is repeatedly used while the acid bath is subjected to electrolysis, metallic copper being produced and sulphuric acid being regenerated so that this bath is also repeatedly used, the copper being electrolysed to form copper hydroxide which is also used for forming the cuprammonium solution. The ammonia from the used water bath may also be used in dissolving the cellulose or it may be recovered as ammonium sulphate. The cuprammonium solution, at the starting of the process, is preferably prepared by the mixture of ammonia and copper hydroxide so that no sulphate radical is produced in the cuprammonium cellulose solution. A small quantity of tartaric acid or glucose may be added to the water bath to prevent the copper hydroxide deposited therein from floating on the bath. When the ammonia is to be recovered from the water bath for use in dissolving the cellulose, acidic ammonium phosphate or borate is employed as an absorbent. The Specification as open to inspection under Sect. 91 comprised the use of the hydrogen, produced in the electrolysis of the copper, as a raw material in the manufacture of ammonia. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP538966X | 1939-06-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB538966A true GB538966A (en) | 1941-08-22 |
Family
ID=12955470
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4056/40A Expired GB538966A (en) | 1939-06-23 | 1940-03-04 | Improvements in a cupro-ammonium process for the production of artificial filaments |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE438126A (en) |
CH (1) | CH224413A (en) |
FR (1) | FR863367A (en) |
GB (1) | GB538966A (en) |
-
0
- BE BE438126D patent/BE438126A/xx unknown
-
1940
- 1940-01-29 CH CH224413D patent/CH224413A/en unknown
- 1940-02-10 FR FR863367D patent/FR863367A/en not_active Expired
- 1940-03-04 GB GB4056/40A patent/GB538966A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR863367A (en) | 1941-03-31 |
BE438126A (en) | |
CH224413A (en) | 1942-11-30 |
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