DE685980C - Process for spinning copper oxide ammonia cellulose solutions - Google Patents
Process for spinning copper oxide ammonia cellulose solutionsInfo
- Publication number
- DE685980C DE685980C DEI57524D DEI0057524D DE685980C DE 685980 C DE685980 C DE 685980C DE I57524 D DEI57524 D DE I57524D DE I0057524 D DEI0057524 D DE I0057524D DE 685980 C DE685980 C DE 685980C
- Authority
- DE
- Germany
- Prior art keywords
- copper oxide
- cellulose solutions
- ammonia cellulose
- oxide ammonia
- spinning copper
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Description
Verfahren zum Verspinnen von ICupferoxydammoniakcelluloselösungen Im Patent 68--,884 ist eine Methode beschrieben, das Kupferstreckspinnverfahren mit ammoniakalischem `Vassür als Fällflüssigkeit, insbesondere mit bereits gebrauchter Fällflüssigkeit, auszuführen, und zwar in Gegenwart geringer Mengen gelöster Erdalkalisalze.A process for spinning ICupferoxydammoniakcelluloselösungen In patent 68 - 884 a method is described, the copper expanded spinning process with ammoniacal `Vassür as a precipitating liquid, in particular with already used precipitating liquid to carry out, namely in the presence of low amounts of dissolved alkaline earth metal salts.
Es _ hat sich nun herausgestellt, daß plan an Stelle der Erdalkalisalze mit demselben Erfolg auch Erdalkalihydroxyde, beispielsweise Calciumhydroxyd, verwenden kann. Eine besonders vorteilhafte Ausführungsform dieses Verfahrens ist die, daß man der ammoniak- und kupferhaltigen, gebrauchten Fällflüssigkeit einen gewissen Prozentsatz, beispielsweise 3o%, einer durch Zusatz eines Überschusses von Calciumhydroxyd vom Kupfer befreiten, im wesentlichen NH3 und Ca(OH)2 enthaltenden gebrachten Fällflüssigkeit wieder zusetzt. Hinsichtlich der zuzusetzenden Mengen gilt das im Hauptpatent Gesagte.It has now been found that instead of the alkaline earth salts Use alkaline earth metal hydroxides, for example calcium hydroxide, with the same success can. A particularly advantageous embodiment of this method is that the ammonia and copper-containing, used precipitating liquid is given a certain amount Percentage, for example 30%, of one by adding an excess of calcium hydroxide The precipitating liquid which has been freed from copper and essentially contains NH3 and Ca (OH) 2 clogs again. With regard to the amounts to be added, the statements made in the main patent apply.
Die so erhaltenen Fasern sind, im Gegensatz zu den ohne Zusatz gewonnenen, frei von verklebten Faserbüscheln.The fibers obtained in this way are, in contrast to those obtained without additives, free of stuck tufts of fibers.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEI57524D DE685980C (en) | 1937-02-27 | 1937-03-24 | Process for spinning copper oxide ammonia cellulose solutions |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEI57237D DE682884C (en) | 1937-02-27 | 1937-02-27 | Process for spinning copper oxide ammonia cellulose solutions |
DEI57524D DE685980C (en) | 1937-02-27 | 1937-03-24 | Process for spinning copper oxide ammonia cellulose solutions |
Publications (1)
Publication Number | Publication Date |
---|---|
DE685980C true DE685980C (en) | 1939-12-29 |
Family
ID=25981981
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEI57524D Expired DE685980C (en) | 1937-02-27 | 1937-03-24 | Process for spinning copper oxide ammonia cellulose solutions |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE685980C (en) |
-
1937
- 1937-03-24 DE DEI57524D patent/DE685980C/en not_active Expired
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