US2628885A - Manufacture and production of artificial threads from viscose - Google Patents

Manufacture and production of artificial threads from viscose Download PDF

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Publication number
US2628885A
US2628885A US72031A US7203149A US2628885A US 2628885 A US2628885 A US 2628885A US 72031 A US72031 A US 72031A US 7203149 A US7203149 A US 7203149A US 2628885 A US2628885 A US 2628885A
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United States
Prior art keywords
thread
viscose
oil
production
advancing
Prior art date
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Expired - Lifetime
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US72031A
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English (en)
Inventor
Wharton John
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.)
Akzo Nobel UK PLC
Original Assignee
Courtaulds PLC
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Publication date
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    • 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
    • D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
    • D01F2/08—Composition of the spinning solution or the bath
    • 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
    • D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
    • D01F11/02—Chemical after-treatment of artificial filaments or the like during manufacture of cellulose, cellulose derivatives, or proteins
    • 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
    • D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose

Definitions

  • This invention relates to, the manufacture and the production of artificial threads, filaments, yarns and the like, hereinafter referred to as threads, from viscose.
  • viscose In the production of artificial threads from viscose, viscose is extruded. through a jet into a coagulating bath containing sulphuric acid and one or more metallic salts.
  • the threads are withdrawn from the coagulating bath and passed by means of thread guides ..over one or more godets, or the threads arepassed on to one or more thread-advancing reels where they are treated with processing liquids.
  • Insoluble substances are formed by the reactions which take place during the coagulation and subsequent treatment of the threadsand these substances are carried away by the threads and tend to form hard deposits onthread guides, godets and thread-advancing reels.
  • the object of the present invention is to improve the production of artificial threads from viscose by preventing the formation of rock-like deposits and incrustations I on thread guides, godets or thread-advancing reels.
  • the present invention consists in a process for the production of artificial threads from viscose wherein the coagulating bath or a process ing liquid containing sulphuric acid, one or more metallic salts and an oil, also contains an emulsifying agent for the oil comprising a polygly-' col ether obtained by reacting-from 2 to 12 mols of ethylene oxide with 1 mol of a long chain fatty alcohol having not less than ten carbon atoms in the chain.
  • an emulsifying agent for the oil comprising a polygly-' col ether obtained by reacting-from 2 to 12 mols of ethylene oxide with 1 mol of a long chain fatty alcohol having not less than ten carbon atoms in the chain.
  • the polyglycol ether as defined is ineludedin processing liquids applied to the thread after it is drawn fromthe coagulating bath.
  • aprocessing liquid may contain for examplells' per cent to 4 percent of sulphuric acid, from l per cent to per cent of sodium sulphate, from 0.1 per centto 1.5 per cent of zinc sulphate and from 0.1 per cent to 1 per cent of an oilfthe percentages being by weight.
  • the processing liquid containing the polyglycol ether may be the hot dilute acid bath in which the threads are stretched as described in 'U. S.
  • the emulsifying agent is pref; erably dissolved in the oil before addition to the coagulating bath or processing liquid.
  • the oil present in the coagulating bath or processing liquid may be mineral oil, for example, white oil or a vegetableoi'l, for example, olive oil or cottonseed oil or ananimal oil, for example, sperm oil.
  • Suitable polyglycol ethers which may be used in carrying out the process of the present invention are those prepared by reacting 1 part of lau'ryl alcohol with 0.6 to 0.8
  • the emulsifying properties of the polyglycol' ethers are found to vary in accordance with the variation in the relative proportions of the two reactants and a series of simple tests will determine the proportions giving a product having the best emulsifying properties under the conditions.
  • the process of the present invention is applicable to the production. of artificialthreads from viscose by any of the usual processes.
  • the centrifugal spinning process in which the thread leaving the spinning bath is passed over one or more godets and collected in a rapidly rotating box, the addition to the coagulating bath containing sulphuric acid, one or more metallic salts and an oil of a polyglycol ether (as defined).
  • a processing liquid containing sul-' phuric acid, one or more metallic salts, an oil and a polyglycol ether may be dripped onto the thread while it is passing over a godet,
  • thread is subjected to treatment. with a number of processing liquids while it is passing over one or more thread-advancing reels.
  • a processing liquid containing sulphuric acid, one or more metallic salts, an oil, and a polyglycol ether prevents the formation of rock-like deposits on the thread-advancing reels.
  • the process of the present invention is applicable to all types of continuous spinning machines; and when the process is used the thread guides, reels, rollers and thread-advancing devices on the machine remain substantially free from rock-like deposits which would otherwise collect and have a deleterious action on the thread as well as necessitating frequent and arduous cleaning operations.
  • Figure 1 represents part of a continuous spinning machine
  • Figure 2 represents part of a centrifugal spinning machine.
  • viscose is extruded through the jet I from the supply pipe 2 into the coagulating bath 3 to form a thread 4.
  • the thread leaving the coagulating bath passes up to the thread-advancing device 5 over which it travels in a number of advancing helical turns.
  • the thread falls vertically downward to the second thread-advancing device 6 and again travels in a number of advancing helical turns.
  • a processing liquid containing sulphuric acid, one or more metallic salts, oil and as emulsifying agent a polyglycol ether obtained by reacting 2 to 12 mols of ethylene oxide with 1 mol of a long chain fatty alcohol having not less than ten carbon atoms in the chain is allowed to drip onto the thread travelling on the thread-advancing device 6 by means of the distributor ID; the used processing liquid is collected in the drip pan H.
  • the thread reaching the discharge end of thread-advancing device 6 passes down onto the thread-advancing device I and thence to thread-advancing devices 8 and 9.
  • the thread may be treated with washing, desulphurising, bleaching or other processing liquids While it is travelling on thread-advancing devices I and 8 from distributors [2, I4 and the used liquids collected in drip pans l3, l5.
  • the threadadvancing device 9 is supplied internally with steam for heating and so drying the thread.
  • the thread is finally collected on the holder I6 by a cap spinning device l1. Impurities carried over by the thread from the coagulating bath remain in a soft, easily removable condition owing to the processing liquid applied to thread-advancing device 6 and do not form rock-like deposits on thread-advancing devices 6, I, 8 and 9 or on any other parts of the apparatus.
  • viscose is extruded through a jet 20 from supply pipe 2
  • the coagulating bath may conveniently contain sulphuric acid, one or more metallic salts, oil and lauryl triglycol ether as emulsifying agent for the oil.
  • the thread leaving the coagulating bath is passed round godet 25 and thread-guide 26 and then passes up to godet 21.
  • a processing liquid conveniently containing sulphuric acid, one or more metallic salts, white oil and lauryl triglycol ether is allowed to drip onto the thread passing over godet 21; the processing liquid is supplied by the distributor 28 and the used liquid is collected in the drip-pan 29.
  • the thread leaving godet 27 passes vertically downwards to the funnel 35 and is collected in the form of a cal re in the rapidly ro tating box 3
  • the thread guide 26, godets 25 4 and 27 and the funnel 30 remain substantially free from hard deposits of impurities.
  • the polyglycol ethers used as emulsifying agents according to the present invention give optimum emulsification of the oil in the acid and salt coagulating bath or processing liquid and the emulsions obtained remain stable at the concentrations and temperatures used for the spinning and processing of viscose threads.
  • Example 1 A processing liquid for effecting further coagulation of viscose threads on a thread-advancing reel is prepared by the addition to a bath containing in each litre 2.0 per cent of sulphuric acid, 4.2 per cent of sodium sulphate and 0.5 per cent of zinc sulphate, of 5 grams of mineral oil in which is dissolvedf: per cent of a lauryl polyglycol ether madeby condensing 1 part of lauryl alcohol with 0.7 part of ethylene oxide. After thorough mixing, an emulsion is obtained which is stable at all temperatures between 15 centigrade and centigrade. When the emulsion is allowed to drip onto viscose rayon thread passing over a thread-advancing reel, the reel remains free from hard deposits of sulphur impurities.
  • Example 2 An emulsion suitable for a processing liquid for viscose artificial threads is prepared by the addition to a bath containing in each litre 1 per cent of sulphuric acid, 2.5 per cent of sodium sulphate and 0.1 percent of zinc sulphate, of 5 per cent of a self-emulsifying mixture comprising approximately 97 per cent mineral oil and 3 per cent of a cetyl polyglycol ether made by condensing 1 part of cetyl alcohol with 1 part of ethylene oxide.
  • the mineral oil emulsion remains stable over a long period. When this emulsion is used for processing viscose rayon thread passing over a thread-advancingreel, the reel remains free from hard deposits of sulphur impurities.
  • a process for the production of artificial threads from viscose including the step of subjecting the thread after it leaves the coagulating bath to the action of an aqueous solution containing 2% of sulphuric'acid, 4.2% of sodium sulphate, 0.5% of zinc sulphate and 5 grams per litre of solution of mineral oil in which is dissolved 5% of a lauryl polyglycol ether made by condensing 1 part of lauryl alcohol with 0.7 part of ethylene oxide, whereby the formation of harmful deposits on the parts of the apparatus with which the thread comes into contact after leaving the coagulatingbath isv prevented.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Artificial Filaments (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US72031A 1948-02-09 1949-01-21 Manufacture and production of artificial threads from viscose Expired - Lifetime US2628885A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB271617X 1948-02-09

Publications (1)

Publication Number Publication Date
US2628885A true US2628885A (en) 1953-02-17

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US72031A Expired - Lifetime US2628885A (en) 1948-02-09 1949-01-21 Manufacture and production of artificial threads from viscose

Country Status (6)

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US (1) US2628885A (en(2012))
BE (2) BE504844A (en(2012))
CH (2) CH271617A (en(2012))
DE (1) DE860390C (en(2012))
FR (2) FR980541A (en(2012))
GB (2) GB640105A (en(2012))

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2164431A (en) * 1939-07-04 Production of etherg suitable as dis
GB541099A (en) * 1940-05-11 1941-11-12 Courtaulds Ltd Improvements in and relating to the manufacture and production of artificial threads and the like articles from viscose
US2309072A (en) * 1940-07-29 1943-01-19 Ind Rayon Corp Manufacture of thread or the like
US2394519A (en) * 1940-07-29 1946-02-05 Ind Rayon Corp Manufacture of thread or the like

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2164431A (en) * 1939-07-04 Production of etherg suitable as dis
GB541099A (en) * 1940-05-11 1941-11-12 Courtaulds Ltd Improvements in and relating to the manufacture and production of artificial threads and the like articles from viscose
US2309072A (en) * 1940-07-29 1943-01-19 Ind Rayon Corp Manufacture of thread or the like
US2394519A (en) * 1940-07-29 1946-02-05 Ind Rayon Corp Manufacture of thread or the like

Also Published As

Publication number Publication date
FR63213E (fr) 1955-09-12
CH271617A (de) 1950-11-15
GB698680A (en) 1953-10-21
BE504844A (en(2012))
CH303509A (de) 1954-11-30
GB640105A (en) 1950-07-12
BE487185A (en(2012))
FR980541A (fr) 1951-05-15
DE860390C (de) 1952-12-22

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