US2315224A - Cuprammonium cellulose spinning process - Google Patents
Cuprammonium cellulose spinning process Download PDFInfo
- Publication number
- US2315224A US2315224A US245912A US24591238A US2315224A US 2315224 A US2315224 A US 2315224A US 245912 A US245912 A US 245912A US 24591238 A US24591238 A US 24591238A US 2315224 A US2315224 A US 2315224A
- Authority
- US
- United States
- Prior art keywords
- water
- cellulose
- spinning process
- spinning
- precipitating
- 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 - Lifetime
Links
- 229920002678 cellulose Polymers 0.000 title description 15
- 239000001913 cellulose Substances 0.000 title description 15
- 238000009987 spinning Methods 0.000 title description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 29
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 14
- 238000000034 method Methods 0.000 description 11
- 238000001914 filtration Methods 0.000 description 9
- 230000001376 precipitating effect Effects 0.000 description 8
- 229910021529 ammonia Inorganic materials 0.000 description 7
- 229920002994 synthetic fiber Polymers 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 238000001556 precipitation Methods 0.000 description 5
- 239000013505 freshwater Substances 0.000 description 4
- 230000001112 coagulating effect Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 230000003292 diminished effect Effects 0.000 description 2
- 229920002955 Art silk Polymers 0.000 description 1
- JJLJMEJHUUYSSY-UHFFFAOYSA-L Copper hydroxide Chemical compound [OH-].[OH-].[Cu+2] JJLJMEJHUUYSSY-UHFFFAOYSA-L 0.000 description 1
- 239000005750 Copper hydroxide Substances 0.000 description 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical class [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910001956 copper hydroxide Inorganic materials 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- FJIKWRGCXUCUIG-UHFFFAOYSA-N lormetazepam Chemical compound N=1C(O)C(=O)N(C)C2=CC=C(Cl)C=C2C=1C1=CC=CC=C1Cl FJIKWRGCXUCUIG-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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
Definitions
- the precipitation-water in such processes can be re-used without difficulty after it has been subjected to an intensive filtration. This may be effected, for instance, by means of a sand filter; the sand may also be replaced by kieselguhr'or a similar material possessing a large active surface.
- such filters do not only retain coarse particles, but also the above mentioned particles of 1 cellulose and of copper compoundswhich-are very finely (colloidally) dispersed in the water and which, in the non-filtrated water, give rise to the above mentioned agglomerations. According to our process, also these particles are practically completely removed from the water, so that the previous disturbances caused thereby are avoided.
- the water filtrated in this manner can be directly used for precipitating further quantities of cellulose solution, if desired after the addition of a suitable amount of fresh water.
- a further advantage of re-using the water in precipitating cuprammonium cellulose solutions is in the fact that the ammonia and copper conn December 15, 1938, se- Germany December 18,
- tent of the water is increased so that the recovery of the said ingredients is facilitated.
- This advantage becomes especially apparent if the fresh water is used for spinning artificial fibers of low total titer and the water therefrom, after filtration, is employed for precipitating fibers of high total titer.
- the water takes up relatively small amounts of ammonia and copper in the first stage, whereas in the second stage it comes into contact with a much larger quantity of cellulose solution and, therefore, takes up large amounts of ammonia and copper.
- artificial silk is spun having a total titer of 15-200 den. (per each spinning nozzle) with fresh Water, and the water, after filtration, is used for spinning artificial fibers of a total titer of 1000-3000 den. per spinning nozzle (as usual in staple fiber production).
- the coagulating action of the water which has been used already in precipitation is smaller than the action of fresh water. It can be compensated in known manner, for instance by raising the temperature.
- the water may be re-used once or several times, provided it is filtrated as above stated before each new use. Obviously this has an end when the ammonia content of the water has reached a certain degree, because then the water ceases to have a coagulating action on the cellulose solutions.
- the process of producing shaped cellulose articles, especially artificial fibers, from cuprammonium cellulose solutions by stretch-spinning which comprises spinning the cellulose solution intowater as a precipitating agent, precipitating the solution with the water, filtering the water used in precipitating the solution in a filtering medium capable of removing the colloidal copper and cellulose in the water, leaving substantially all of the ammonia in the water, and re-using the filtered water containing the ammonia to precipitate further quantities of cellulose solutions.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Artificial Filaments (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE522645X | 1937-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2315224A true US2315224A (en) | 1943-03-30 |
Family
ID=6551722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US245912A Expired - Lifetime US2315224A (en) | 1937-12-18 | 1938-12-15 | Cuprammonium cellulose spinning process |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2315224A (fr) |
| FR (1) | FR847543A (fr) |
| GB (1) | GB522645A (fr) |
-
1938
- 1938-12-14 FR FR847543D patent/FR847543A/fr not_active Expired
- 1938-12-15 US US245912A patent/US2315224A/en not_active Expired - Lifetime
- 1938-12-16 GB GB36740/38A patent/GB522645A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR847543A (fr) | 1939-10-11 |
| GB522645A (en) | 1940-06-24 |
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