DE237816C - - Google Patents
Info
- Publication number
- DE237816C DE237816C DENDAT237816D DE237816DA DE237816C DE 237816 C DE237816 C DE 237816C DE NDAT237816 D DENDAT237816 D DE NDAT237816D DE 237816D A DE237816D A DE 237816DA DE 237816 C DE237816 C DE 237816C
- Authority
- DE
- Germany
- Prior art keywords
- cellulose
- alkali salts
- organic acids
- instead
- added
- 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.)
- Active
Links
- 229920002678 cellulose Polymers 0.000 claims description 6
- 239000001913 cellulose Substances 0.000 claims description 6
- 150000001447 alkali salts Chemical class 0.000 claims description 4
- DBNPDRYVYQWGFW-UHFFFAOYSA-N N.[Cu]=O Chemical compound N.[Cu]=O DBNPDRYVYQWGFW-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 150000007524 organic acids Chemical class 0.000 claims description 3
- 235000005985 organic acids Nutrition 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims 1
- 238000006011 modification reaction Methods 0.000 claims 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical class OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- 241000131971 Bradyrhizobiaceae Species 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L Copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 208000006558 Dental Calculus Diseases 0.000 description 1
- FEWJPZIEWOKRBE-XIXRPRMCSA-N Mesotartaric acid Chemical class OC(=O)[C@@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-XIXRPRMCSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- ZMFVLYPTTFPBNG-UHFFFAOYSA-O azanium;2,3-dihydroxybutanedioic acid Chemical compound [NH4+].OC(=O)C(O)C(O)C(O)=O ZMFVLYPTTFPBNG-UHFFFAOYSA-O 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- LJCNRYVRMXRIQR-OLXYHTOASA-L potassium sodium L-tartrate Chemical compound [Na+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O LJCNRYVRMXRIQR-OLXYHTOASA-L 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 235000011006 sodium potassium tartrate Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 229960001367 tartaric acid Drugs 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
- C08B1/006—Preparation of cuprammonium cellulose solutions
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)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
- JVI 237816 -KLASSE 29 b. GRUPPE - JVI 237816 - CLASS 29 b. GROUP
RHEINISCHE KUNSTSEIDE-FABRIK A.-G. in AACHEN.RHINE SYNTHETIC FACTORY A.-G. in Aachen.
Verfahren zur Herstellung von verspinnbaren Kupferoxydammoniak-Celluloselösungen mittels Kupfersalz, Ammoniak und fixen Alkalis.Process for the production of spinnable copper oxide ammonia cellulose solutions using copper salt, ammonia and fixed alkalis.
Zusatz zum Patente 236537 vom 1. August 1908.Addendum to patent 236537 from August 1, 1908.
Patentiert im Deutschen Reiche vom 23. März 1910 ab. Längste Dauer: 31.JuIi 1923.Patented in the German Empire on March 23, 1910. Longest duration: July 31, 1923.
Bei dem Verfahren nach Patent 236537 werden der Kupferoxydammoniaklösung vor oder nach dem Eintragen der Cellulose ο. dgl. organische Säuren zugesetzt, wodurch die HaItbarkeit des Lösungsmittels und der fertigen Spinnlösung erheblich erhöht und die Auflösung der Cellulose im Lösungsmittel erleichtert wird. Es hat sich nun gezeigt, daß an Stelle der freien organischen Säuren auch deren Alkalisalze Anwendung finden können.In the process according to patent 236537, the copper oxide ammonia solution is before or after entering the cellulose ο. Like. Organic acids added, reducing the durability of the solvent and the finished spinning solution increased significantly and the resolution the cellulose is lightened in the solvent. It has now been shown that instead of the free organic acids and their alkali salts can also be used.
Beispielsweise können als Zusätze zum Lösungsmittel bzw. zur Spinnlösung an Stelle der freien Säuren die Alkalisalze der Weinsäure, Weinstein, Seignettesalz, weinsaures Ammonium usw., die Alkalisalze der Zitronensäure und diejenigen der Oxalsäure Anwendung finden. Dabei können die Salzzusätze etwas höher gehalten werden als die Säurezusätze nach dem Hauptpatent.For example, as additives to the solvent or to the spinning solution instead of the free acids the alkali salts of tartaric acid, tartar, seignette salt, tartaric acid Ammonium, etc., the alkali salts of citric acid and those of oxalic acid Find. The salt additions can be kept slightly higher than the acid additions according to the main patent.
ι bis 3 Teile festes Kupfervitriol werden mit io °/0 Weinstein, berechnet auf die in Anwendung gebrachte Cellulose, verrieben, worauf das Gemisch in 5 bis 15 Teilen wäßrigem Ammoniak von 25 ° Be. gelöst wird und 2 bis 4 Teile Natronlauge von 210Be. zugesetzt werden. Alsdann erfolgt das Eintragen der Cellulose in der üblichen Weise.ι to 3 parts of solid copper sulphate are triturated with io ° / 0 Weinstein, calculated to the application placed on the cellulose, and the mixture in 5 to 15 parts of aqueous ammonia of 25 ° Be. is dissolved and 2 to 4 parts of sodium hydroxide solution of 21 0 Be. can be added. The cellulose is then introduced in the usual manner.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE237816C true DE237816C (en) |
Family
ID=497387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT237816D Active DE237816C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE237816C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE966600C (en) * | 1946-08-08 | 1957-08-22 | Beaunit Mills Inc | Process for the simultaneous recovery of copper and tartaric acid salts from waste liquids that accumulate in the production of cellulose products from copper oxide ammonia cellulose solutions |
-
0
- DE DENDAT237816D patent/DE237816C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE966600C (en) * | 1946-08-08 | 1957-08-22 | Beaunit Mills Inc | Process for the simultaneous recovery of copper and tartaric acid salts from waste liquids that accumulate in the production of cellulose products from copper oxide ammonia cellulose solutions |
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