DE436061C - Copper oxide ammonia cellulose solution for spinning rayon using the draw spinning process - Google Patents

Copper oxide ammonia cellulose solution for spinning rayon using the draw spinning process

Info

Publication number
DE436061C
DE436061C DEB114605D DEB0114605D DE436061C DE 436061 C DE436061 C DE 436061C DE B114605 D DEB114605 D DE B114605D DE B0114605 D DEB0114605 D DE B0114605D DE 436061 C DE436061 C DE 436061C
Authority
DE
Germany
Prior art keywords
spinning
copper oxide
cellulose solution
rayon
draw
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
Application number
DEB114605D
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German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JP Bemberg AG
Original Assignee
JP Bemberg AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JP Bemberg AG filed Critical JP Bemberg AG
Priority to DEB114605D priority Critical patent/DE436061C/en
Application granted granted Critical
Publication of DE436061C publication Critical patent/DE436061C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08BPOLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B1/00Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
    • C08B1/006Preparation of cuprammonium cellulose solutions

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  • 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)
  • Artificial Filaments (AREA)

Description

Kupferoxydammoniakcelluloselösung zum Spinnen von Kunstseide nach dem Streckspinnverfahren Bei der Herstellung von Kupferoxydammoniakcelluloselösung zum Spinnen von Kunstseide nach dem Streckspinnverfahren geht aus wirtschaftlichen Gründen das Bestreben dahin, das ganze zur Verfügung stehende Kupfer zur Lösung von Cellulose auszunutzen.Copper oxide ammonia cellulose solution for spinning rayon after the draw spinning process in the production of copper oxide ammonia cellulose solution The spinning of artificial silk by the draw spinning process is economical Establish the endeavor to use all of the available copper for the solution of cellulose.

Bei dem in der Praxis üblichen Verfahren, bei welchem basisches Kupfersulfat und Ammoniak noch einen Zusatz von Natronlauge erhalten, um das Maximum an Cellulose zu lösen, beträgt das Verhältnis der angewandten Kupfer- und Cellulosemenge etwa r : 2,3. Wendet man dagegen reines, trockenes und wärmebeständiges Kupferhydroxyd an, das nach bekanntem Verfahren durch Behandeln von basischem Sulfat mit Natronlauge hergestellt werden kann, so löst sich darin die Cellulose in Gegenwart von Ammoniak im Verhältnis 2,6 auf ein Teil Kupfer auf, was eine bedeutende Ersparnis an Kupfer bedeutet. Diese größere Löslichkeit von Cellulose auf eine gegebene Menge Kupfer beruht wahrscheinlich auf der Abwesenheit irgend welcher Salze, im bezweckten Falle von N atriumsulfat.In the process common in practice, in which basic copper sulphate and ammonia still received an addition of caustic soda to get the maximum amount of cellulose To solve the problem, the ratio of the amount of copper and cellulose used is approximately r: 2.3. On the other hand, if you use pure, dry and heat-resistant copper hydroxide on, according to a known method by treating basic sulfate with sodium hydroxide solution can be produced, the cellulose dissolves therein in the presence of ammonia in a ratio of 2.6 to one part of copper, which is a significant saving in copper means. This greater solubility of cellulose for a given amount of copper probably due to the absence of any salts, in the intended case of sodium sulfate.

Diese mit reinem Kupferhydroxyd hergestellten Lösungen erfordern zur Erzielung weicher und bester Seide eine verhältnismäßig hohe Temperatur des Fallbades beim Spinnen. Es ist nun gefunden worden, daß gewisse Zusätze von Alkalisalzen, insbesondere von Natriumsulfat, zur fertigen Spinnlösung die zur Erzielung bester Seide erforderliche Spinntemperatur herabsetzen. Betrug bei Verarbeitung einer aus reinem Kupferhydroxyd hergestellten Kupferoxydammoniakcelluloselösung die Spinntemperatur beispielsweise 45', so kann ohne Nachteil für den Verlauf des Spinnprozesses und die Erzielung bester Seide bei Zugabe von Natriumsulfat zur fertigen Lösung die Temperatur des Fallbades auf 3o° und noch weniger herabgesetzt werden, je nach der Menge des zugesetzten l\Tatriumsulfats. Dieser nachträgliche Zusatz von Natriumsulfat hat keinerlei Einfluß mehr auf das einmal bestehende Lösungsverhältnis von Kupfer- und Cellulose, insbesondere erfolgt durch ihn keine Ausscheidung der infolge der Anwendung reinen Kupferhydroxydes in der Spinnlösung mehr gelösten Cellulose.These solutions made with pure copper hydroxide require for Achieving soft and best silk a relatively high temperature of the fall bath while spinning. It has now been found that certain additives of alkali salts, especially of sodium sulphate, to the finished spinning solution the best one to achieve Reduce the required spinning temperature for the silk. Fraud in processing an off copper oxide ammonia cellulose solution produced from pure copper hydroxide, the spinning temperature for example 45 ', so can without disadvantage for the course of the spinning process and the achievement of the best silk with the addition of sodium sulfate to the finished solution the The temperature of the fall bath can be lowered to 30 ° and still less, depending on the temperature Amount of sodium sulphate added. This subsequent addition of sodium sulfate no longer has any influence on the existing solution ratio of copper and cellulose, in particular, it does not cause any excretion as a result of the Application of pure copper hydroxide in the spinning solution more dissolved cellulose.

Beispiel: Man setzt zu einer aus zoo kg Baumwolle, 59kg reinem Kupferhydroxyd und 3oo Liter Ammoniak hergestellten Kupferoxydammoniaklösung je nach der gewiinschten Temperaturerniedrigung r bis 5 % NTa@S04 in Form einer roprozentigen Lösung zu.Example: You add 59kg of pure copper hydroxide to one made of zoo kg of cotton and 300 liters of ammonia made copper oxide ammonia solution depending on the desired Temperature decrease r to 5% NTa @ S04 in the form of a percent solution.

Claims (1)

PATENTANSPRUCH: Kupferoxydammoniakcelluloselösung zum Spinnen von Kunstseide nach dem dadurch gekennzeichnet, daß die in einer Mischung von reinem Kupferhydroxyd und Ammoniak gelöste Cellulose einen nachträglichen Zusatz eines Alkalisalzes, insbesondere Natriumsulfat, erhält. Claim: copper oxide ammonia cellulose solution for spinning rayon, characterized in that the cellulose dissolved in a mixture of pure copper hydroxide and ammonia receives a subsequent addition of an alkali salt, in particular sodium sulfate.
DEB114605D 1924-06-25 1924-06-25 Copper oxide ammonia cellulose solution for spinning rayon using the draw spinning process Expired DE436061C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB114605D DE436061C (en) 1924-06-25 1924-06-25 Copper oxide ammonia cellulose solution for spinning rayon using the draw spinning process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB114605D DE436061C (en) 1924-06-25 1924-06-25 Copper oxide ammonia cellulose solution for spinning rayon using the draw spinning process

Publications (1)

Publication Number Publication Date
DE436061C true DE436061C (en) 1928-07-23

Family

ID=6993794

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB114605D Expired DE436061C (en) 1924-06-25 1924-06-25 Copper oxide ammonia cellulose solution for spinning rayon using the draw spinning process

Country Status (1)

Country Link
DE (1) DE436061C (en)

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