US2535044A - Spinning of viscose - Google Patents

Spinning of viscose Download PDF

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Publication number
US2535044A
US2535044A US744068A US74406847A US2535044A US 2535044 A US2535044 A US 2535044A US 744068 A US744068 A US 744068A US 74406847 A US74406847 A US 74406847A US 2535044 A US2535044 A US 2535044A
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United States
Prior art keywords
viscose
bath
spinning
carbon atoms
yarn
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Expired - Lifetime
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US744068A
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English (en)
Inventor
Cox Norman Louis
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EIDP Inc
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EI Du Pont de Nemours and Co
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Publication date
Priority to FR961352D priority Critical patent/FR961352A/fr
Priority to BE515618D priority patent/BE515618A/xx
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Priority to US744068A priority patent/US2535044A/en
Priority to GB602/48A priority patent/GB654083A/en
Priority to DEP28794D priority patent/DE860389C/de
Application granted granted Critical
Publication of US2535044A publication Critical patent/US2535044A/en
Priority to GB863351A priority patent/GB712623A/en
Priority to FR64253D priority patent/FR64253E/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/06—Wet spinning methods
    • 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
    • D01F2/10—Addition to the spinning solution or spinning bath of substances which exert their effect equally well in either

Definitions

  • This invention relates to the regeneration of cellulose from viscose. More particularly it relates to a new process for manufacturing regenerated cellulose articles such as filaments or films having improved properties. 1
  • An object of this invention is to provide a process of manufacturing regenerated cellulose filaments having gel swelling values lower than heretofore attainable and exhibiting considerably improved yarn properties. Another object is to provide a process whereby unripened viscose can be spun in conventional spinning equipment to give yarn of high quality. A further object is to provide a process of manufacturing regenerated cellulose yarn having entirely novel and desirable properties. Yet a further object is the provision of a high tenacity, highly fatigue-resistant regenerated cellulose fiber having a non-crenulated surface and having improved soil and abrasion resistance. Other objects will appear hereinafter.
  • viscose into a sulfuric acid-sodium sulfate coagulating bath containing zinc sulfate and stretching the filaments, preferably in a secondary bath, said viscose containing dissolved therein at least 1 millimole per grams of viscose of a monoamine soluble in 6% aqueous sodium hydroxide to the extent of at least 0.3%, the said monoamine having at least four carbon atoms but containing no radical of more than six carbons.
  • Another object, which was unexpectedly found possible to accomplish through the invention described below was the production of very high strength yarns having smooth (non-crenulated) surfaces with improved soil resistance and abrasion resistance.
  • the combination of high tenacity and high fatigue resistance with smooth surface had not heretofore been achieved.
  • alkali-soluble monoamine modifiers those monoamines having at least four carbon atoms but containing no radical of more than six carbon atoms and being soluble in 6% aqueous sodium hydroxide to an extent of at least 0.3%.
  • Figure 1 is a dyed cross section of a filament regenerated from unripened, unmodified viscose
  • Figure 2 is a dyed cross section of a filament regenerated from viscose unripened, modified with the agents of and by the processes of this invention.
  • the ratio of the gel weight to cellulose weight (grams of gel per gram of cellulose) is referred to as the gel swelling. Variations may be introduced in the procedure, e. g., in the stretch, spinning speed, or length of bath travel, but these introduce only minor changes in the numerical values of gel swelling.
  • D value Another important indication oi. yarn quality is the factor referred to below as D value.
  • This factor relates to the rate of neutralization of the viscose filament in the coagulating and regenerating bath. It is determined by adding to the viscose a suitable indicator, in this case bromocresol purple (pH range 5.2 to 6.8), and observing the distance in inches from the spinneret at which the purple color completely disappears in the traveling filament. This distance is the D value.
  • the selected amines suitable for use in this invention reduce the rate of neutralization of the spinning filaments, hence increase the D value over that of unmodified viscose. It has been found that, in general, the greater the D value, the better the yarn properties.
  • the increased D" value is believed to indicate that the modifying agents of this invention permit greater dehydration of the viscose before the gel structure of the filament is permanently set.
  • Viscose containing 1.8 millimoles of triethanolamine per 100 grams of viscose is prepared in the following manner using 7% cellulose and 6% total sodium hydroxide (7-6 viscose). Alkali cellulose aged to get the desired viscose viscosity to poises) is xanthated for 2 hours using 35% CS: (based on the recoverable bone-dry cellulose). xanthate crumbs are dissolved in a solution of caustic containing the modifier in amounts mentioned above. After mixing 1 hours at 0 C.. the freshly prepared viscose is filtered while it is cold, deaerated, and kept at 0 C. until spun, i. e., it is spun in the unripened state.
  • the caustic content of 6% refers to the total alkalinity expressed as sodium hydroxide. It includes the amine modifier and the free sodium hydroxide, and that combined in the form of sodium carbonate, sodium trithiocarbonate, and sodium cellulose xanthate.
  • the viscose is spun into 275 denier-100 filament yarn by extruding through a spinneret hav ing holes of 0.0025-inch diameter into a primary coagulating and regenerating bath comprising 6.0% H2SO4, 14% Na2SO4, and 15% ZnSO4.
  • the yarn is given a bath travel of 28 inches by using a roller guide.
  • the apparatus and general procedure used to lead viscose into the bath and to collect the formed thread are essentially the same as those used commercially in the so-called bobbin or spool process.
  • the specific conditions include a bath temperature of 50 C. and a first feed wheel speed of 485 inches per minute.
  • the filaments are carried through a water bath at C. to C.
  • the resulting regenerated gel yarn is washed free of acid and salt and then processed.
  • the yarns which are dried on the bobbin or, alternately, partially relaxed before drying by rewinding on another bobbin, are twisted 4 turns per inch and tested after conditioning at 21 C. and 60% relative humidity for 48 hours.
  • the yarn produced by this and other examples has a number of properties which distinguishes it sharply from other regenerated cellulose yarn. Its properties are similar to those produced through modification of viscose with shortchain quaternary ammonium compounds which are described and claimed in copending application Serial No. 716,415. The most readily apparent modifications are the new cross-section and surface features. For yarns prepared from unmodified viscose spun into a zinc bath, a skin or outer shell which swells to a different extent in water than that of the core is visible. These yarn cross-sections show both deep and shallow crenulations around the contour of the filament.
  • the yarn properties are tabulated below along with T ms-Id, dry 3.92 3.85 those oi green, unmodified and ripened, control $33 513;; m3; ggg 5 53 viscose. Itwill be noted that the use of un- Eiong.,peroent ry 6.5 1.1 ripened, modified viscose gives lower gel swell- E2351; :23: ⁇ 53a ;;2 2;; ing, lower rate of neutralization (higher "D" g lswe s 2- 3.2 value) and improved yarn properties.
  • Example III A cotton llnters viscose containing 7% cellulose, 6% sodium hydroxide, and 2.9 milllmoles oi diethanolamine per 100 grams of viscose is prepared and spun as described in Example I. Yarns with smooth surface and improved physical properties (see table below) were obtained.
  • the coagulating bath is 8-23-4 (Hesoe-Naesoi-znsoi) As may be seen in the table below the wet strength is better than for the accompanying control and the rate of neutralization and gel swelling are much lower.
  • Example VIII A cotton linters viscose containing 7% cellulose and 6% sodium hydroxide and 4.5 millimoles of n-amylamine per 100 grams of viscose is prepared as described in Example I. The viscose is spun in an unripened state in 8-23-4 bath and all conditions of Example I for spinning and processing are used. The table below shows the improvement in loop and wet tenacities and gel swelling obtained from this modifier.
  • . -sef swws M s- 9mm ea asa of at least 0.3% is suitable, provided it also fulfills the other conditions previously stated, namely (a) It must be a monoamine. It has been found that certain diamines, e. g. ethylene diamine have practically no effect as regards decrease in gel swelling and increase in D" value.
  • the preferred modifiers are those in which the amino nitrogen is attached to hydrocarbon groups, preferably alkyl groups, and/or to hydroxyalkyl groups.
  • modifiers must be substantially chemically inert and unaffected by components of the viscose before coagulation.
  • Suitable agents which may be mentioned in addition to those used in the examples are diethylamine, dipropylamine, butyl- Unripeued. f
  • amine ethyldiethanolamine, dipropanolamine, propylpropanolamine, hexanolamine, amyldiethanolamine, butylmethylethanolamine.
  • propylethanolamine cyclohexylethanolamine, hexamethyleneimine, piperidine, pyridine, and hexyldiethanolamine.
  • the amine modifiers for effective results should be used in the viscose in concentrations of at least 1.0 milllmole of agent per 100 grams of viscose, and, in general, it is unnecessary to use more than 10 millimoles of agent per 100 grams of viscose, a generally useful range being 1.0 to 4.0 millimoles per 100 grams of viscose. In terms of the less informative weight percent basis there should be used between 0.1 and 1.0% of the modifying agent. The optimum concentration of any given agent depends on its eflectiveness and on its molecular weight. For example, larger concentrations of diethylamine are needed than for triethylamine.
  • the viscose used in the process of the invention may be of a variety of types: for example, it may be from wood pulp, cotton linters, mixtures of the two, or even other types of cellulose.
  • the composition of the viscose may also be varied widely. For example, it may have a cellulose. content of from 4% to 10% or even more and an alkali content of from 4% to 8% or more.
  • the amount of carbon disulfide used in xanthation can be from 25% to 50% (based on the recoverable bone-dry cellulose).
  • the spinning baths suitable for use in the invention contain sulfuric acid, sodium sulfate, and zinc sulfate.
  • Zinc sulfate is an essential component of the spinning bath since, in its absence, the amine compounds have no effect on spinning and yarn properties.
  • additional salts of divalent metals known to reinforce or supplement the action of zinc sulfate may be used, such as ferrous sulfate, manganese sulfate, nickel sulfate, or chromic sulfate. particularly the first-named salt.
  • the use of these divalent metal salts makes it possible to use smaller amounts of zinc sulfate than are necessary in their absence.
  • the spinning bath contains from 4% to 12% of sulfuric acid, from 13% to 25% of sodium sulfate, and from 2% to 15% of zinc sulfate, optionally with 1% to about of ferroussulfate.
  • amines toviscose it is possible to
  • the novel and improved yarns obtainable through the process of this invention can, in general, be used instead of regular regenerated cellulose fibers for any purpose where the latter are finding applications, more particularly in the textile and tire cord industries.
  • modified viscoses give yarns of decreased quality.
  • the temperature range of best spinnability is from 40 C. to 65 C.
  • Each of the above concentrations should be adjusted to each other and to the composition of the viscose. It is desirable to use as hi h a total solids content as possible in the coagulating bath to give the highest degree of gel shrinkage and improved stretchability.
  • the fila ents mav be given a long travel of 130 to 250 inches in the primary bath by means of a multiple roller setup which gradually applies tension to the traveling filaments and thereby orients them while they are still plastic.
  • the preferred method is to apply a part or all of the stretch beyond the primary bath in a secondary bath or to u e a combination of air and hot bath stretch.
  • the secondary bath may consist simply of water or of dilute (1% to 3%) sulfuric acid, or it may have the same composition as the coagulating bath but at a greater dilution, e. g., one-fourth of the concentration of the coa ulating bath.
  • the temperature of the secondary bath is preferably between 50 C. and 100 C.
  • Stretches of 80% to 100% are preferred for producing high tenacity yarn and to for textile type yarns.
  • the bobbin process has been used in the example. but it is immaterial whether spinning is by bobbin, bucket, or continuous processes.
  • the yarn cake is washed free of acid and salt and then dried under tension. If preferred, it may be twisteror sla her-dried to enable the dry elongation of the fini hed product to be controlled.
  • the preferred procedure is to draw off the freshly coagulated gel yarn with a feed wheel speed equal to or less than the jet velocity and to ap ly all of the stretch between positively driven rollers traveling at different speeds.
  • the thread can be given a travel of 10 to inches in the secondary bath of hot water or dilute bath. As mentioned above, the amount of stretch applied depends on the properties desired for the yarn.
  • a method of producing regenerated cellulosic structures which comprises spinning viscose per grams of viscose of an aliphatic monoamine having at least four carbon atoms but containing no radical of more than six carbon atoms and being soluble in 6% aqueous sodium hydroxide to theextent of at least 0.3% in an aqueous sulfuric acid spinning bath containing from 1% to 15% zinc sulfate.
  • a method of producing regenerated cellu-i losic structures which comprises incorporating .in
  • viscose at least 1 millimole per 100 grams of viscose of an aliphatic monoamine having at least four carbon atoms but containing no radical of more than six carbon atoms and being soluble in 6% aqueous sodium hydroxide to the extent of at least 0.3%, extruding the resultant viscose into a coagulating bath comprising an aqueous solution of 4% to 12% sulfuric acid, 13% to 25% sodium sulfate, and 1% to 15% zinc sulfate;
  • Viscose containing at least 1 millimole per 100 grams of viscose of an aliphatic monoamine having at least four carbon atoms but containing no radical of more than six carbon atoms and being soluble in 6% aqueous sodium hy-- droxide to the extent of at least 0.3%.
  • a method of producing regenerated cellulosic structures which comprises spinning unripened viscose containing at least one millimole per 100 grams of unripened viscose of an aliphatic monoamine having at least four carbon atoms but containing no radical of more than 'six carbon atoms and being soluble in 6% aqueous sodium hydroxide to the extent of at least 0.3% in an aqueous sulfuric acid spinning bath containing from 1% to zinc sulfate.
  • a method of producing regenerated cellulosic structures which comprises spinning unripened viscose containing from about 1 to about 4 millimoles per 100 grams of unripened viscose of an aliphatic monoamine having at least four carbon atoms but containing no radical of more than six carbon atoms and being soluble in 6% aqueous sodium hydroxide to the extent of at least 0.3% in an aqueous sulfuric acid spinning bath containing from 1% to 15% zinc sulfate.
  • a method of producing regenerated cellulosic structures by extruding unripened viscose in an aqueous sulfuric acid bath containing from 1% to 15% zinc sulfate the step which comprises incorporating in the said unripened viscose at least 1 millimole per 100 grams of unripened viscose of an aliphatic monoamine having at least four carbon atoms but containing no radical of more than six carbon atoms and being soluble in 6% aqueous sodium hydroxide to the extent of at least 0.3%.
  • a method of producing regenerated cellulosic structures which comprises the steps of spinning unripened viscose containing at least one millimole per 100 grams of unripened viscose of an aliphatic monoamine having at least four carbon atoms but containing no radical of more than six carbon atoms and being soluble in 6% aqueous sodium hydroxide to the extent of at least 0.3% in an aqueous sulfuric acid spinning bath containing from 1% to 15% zinc sulfate; passing said structures into a second bath and stretching said structures to an extent of at least 14.
  • a process of producing regenerated cellulosic structures which comprises incorporating in unripened viscose at least 1 millimole per 100 grams of unripened viscose of an aliphatic monoamine having at least fo r carbon atoms but containing no radical of more than six carbon atoms and being soluble in 6% aqueous sodium hy-r droxide to the extent of at least 0.3%. extrudins the resultant unripened viscose into a coagulating bath comprising an aqueous solution of 4% to 12% sulfuric acid, 13% to 25% sodium sulfate, and 1% to 15% zinc sulfate.
  • Unripened viscose containing at least 1 millimole per grams of unripened viscose of an aliphatic monoamine having at least four carbon atoms but containing no radical of more than six carbon atoms and being soluble in 6% aqueous sodium hydroxide to the extent of at least 0.3%.
  • Unripened viscose having a salt index of at least 5 and containing at least one millimole per 100 grams of unripened viscose of an aliphatic monoamine having at least four carbon atoms but containing no radical of more than six carbon atoms and being soluble in 6% aqueous sodium hydroxide to the extent of at least 0.3%.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Artificial Filaments (AREA)
US744068A 1947-04-26 1947-04-26 Spinning of viscose Expired - Lifetime US2535044A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FR961352D FR961352A (en(2012)) 1947-04-26
BE515618D BE515618A (en(2012)) 1947-04-26
US744068A US2535044A (en) 1947-04-26 1947-04-26 Spinning of viscose
GB602/48A GB654083A (en) 1947-04-26 1948-01-08 Spinning of viscose
DEP28794D DE860389C (de) 1947-04-26 1948-12-31 Verfahren zur Herstellung von Gebilden aus regenerierter Cellulose
GB863351A GB712623A (en) 1947-04-26 1951-04-13 Spinning of viscose
FR64253D FR64253E (fr) 1947-04-26 1951-04-14 Procédé de filage de la viscose

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Cited By (69)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696423A (en) * 1951-05-29 1954-12-07 Du Pont Viscose modifiers
US2784107A (en) * 1951-12-13 1957-03-05 Courtaulds Ltd Production of artificial filaments, threads and the like
US2792278A (en) * 1953-09-21 1957-05-14 American Viscose Corp Viscose composition and method of spinning
US2792280A (en) * 1953-09-21 1957-05-14 American Viscose Corp Viscose composition and method of spinning
US2792279A (en) * 1953-09-21 1957-05-14 American Viscose Corp Viscose composition and method of spinning
US2792281A (en) * 1953-09-21 1957-05-14 American Viscose Corp Viscose composition and method of spinning
US2810658A (en) * 1954-08-16 1957-10-22 Du Pont Process for spinning modified viscose solution
US2813038A (en) * 1953-04-07 1957-11-12 Courtaulds Ltd Production of artificial filaments, threads and the like
US2840448A (en) * 1955-06-29 1958-06-24 American Viscose Corp Method of producing all skin rayon
US2840449A (en) * 1955-06-29 1958-06-24 American Viscose Corp Method of producing all skin rayon
US2841463A (en) * 1955-06-29 1958-07-01 American Viscose Corp Process of producing all skin rayon
US2841462A (en) * 1955-06-29 1958-07-01 American Viscose Corp Production of all skin rayon
US2847272A (en) * 1953-06-25 1958-08-12 Courtaulds Ltd Production of artificial filaments, threads and the like
US2852333A (en) * 1954-05-21 1958-09-16 Du Pont Viscose spinning process
US2855321A (en) * 1955-03-30 1958-10-07 Du Pont Viscose process
US2860480A (en) * 1956-04-18 1958-11-18 Du Pont Regenerated cellulose structures and process for producing them
US2879170A (en) * 1957-10-02 1959-03-24 Du Pont Chemical composition and process
US2890133A (en) * 1955-06-29 1959-06-09 American Viscose Corp Process of producing all skin rayon
US2890131A (en) * 1955-06-29 1959-06-09 American Viscose Corp Method of producing all skin rayon
US2890132A (en) * 1954-11-03 1959-06-09 John A Howsmon Producing all skin viscose rayon
US2891836A (en) * 1955-04-26 1959-06-23 Du Pont Viscose process
US2893820A (en) * 1956-07-16 1959-07-07 Du Pont Process for the production of regenerated cellulose filaments
US2893821A (en) * 1955-09-03 1959-07-07 American Enka Corp Production of yarns of regenerated cellulose having improved properties
US2898222A (en) * 1956-01-30 1959-08-04 Int Paper Canada Manufacture of regenerated cellulose
US2902381A (en) * 1955-06-29 1959-09-01 American Viscose Corp Method of producing all skin rayon
US2904446A (en) * 1954-11-03 1959-09-15 American Viscose Corp Process of producing viscose rayon
US2906634A (en) * 1954-11-03 1959-09-29 American Viscose Corp Method of producing viscose rayon
US2908581A (en) * 1954-11-03 1959-10-13 American Viscose Corp Producing all skin viscose rayon
US2908582A (en) * 1955-06-29 1959-10-13 American Viscose Corp Production of all skin rayon
US2908583A (en) * 1954-11-03 1959-10-13 American Viscose Corp Method of producing viscose rayon
US2912299A (en) * 1954-09-03 1959-11-10 Chimotex Sa Process of spinning viscose containing thiodiglycol
US2914375A (en) * 1954-05-12 1959-11-24 American Enka Corp Manufacture of viscose thread
US2916391A (en) * 1954-11-03 1959-12-08 American Viscose Corp Process of producing viscose rayon
US2919203A (en) * 1955-12-05 1959-12-29 American Viscose Corp Producing all skin rayon
US2920973A (en) * 1956-04-23 1960-01-12 American Viscose Corp Preparing viscose rayon
US2926099A (en) * 1955-12-05 1960-02-23 American Viscose Corp Preparing all skin viscose rayon
US2932578A (en) * 1955-12-05 1960-04-12 American Viscose Corp Method of producing all skin rayon
US2937070A (en) * 1955-08-02 1960-05-17 Du Pont Viscose process
US2937922A (en) * 1954-03-24 1960-05-24 Rayonier Inc Viscose process
US2940818A (en) * 1954-11-25 1960-06-14 American Enka Corp Production of shaped objects from viscose
US2946782A (en) * 1957-04-05 1960-07-26 Tatsuji Tachikawa Process for the manufacture of viscose rayon staple
US2947597A (en) * 1956-02-20 1960-08-02 American Enka Corp Manufacture of viscose rayon
US2950208A (en) * 1954-11-25 1960-08-23 American Enka Corp Production of shaped objects from viscose
US2952508A (en) * 1953-09-16 1960-09-13 Rayonier Inc Viscose process and products produced thereby
US2953425A (en) * 1954-11-25 1960-09-20 American Enka Corp Production of shaped objects from viscose
US2953426A (en) * 1954-11-25 1960-09-20 American Enka Corp Production of shaped objects from viscose
US2953468A (en) * 1955-10-25 1960-09-20 American Enka Corp Production of shaped objects from viscose
US2954270A (en) * 1955-12-14 1960-09-27 Chimiotex Sa Process of producing a shrinkable cellulose textile filament
US2958569A (en) * 1954-10-20 1960-11-01 American Enka Corp Production of threads and other shaped objects from viscose
US2961289A (en) * 1956-12-18 1960-11-22 American Viscose Corp Process of producing viscose rayon
US2962341A (en) * 1956-05-14 1960-11-29 Du Pont Viscose modification
US2962342A (en) * 1956-12-17 1960-11-29 American Viscose Corp Process of producing viscose rayon
US2970883A (en) * 1956-01-16 1961-02-07 American Enka Corp Manufacture of viscose rayon
US2971817A (en) * 1955-06-29 1961-02-14 American Viscose Corp Producing all skin rayon
US2974004A (en) * 1954-11-25 1961-03-07 American Enka Corp Production of shaped objects from viscose
US2979376A (en) * 1955-06-29 1961-04-11 American Viscose Corp Production of rayon
US2989366A (en) * 1955-06-29 1961-06-20 American Viscose Corp Method of preparing all skin viscose
US2989410A (en) * 1955-06-29 1961-06-20 American Viscose Corp All skin viscose rayon and method of preparing same
US3007764A (en) * 1957-10-01 1961-11-07 Du Pont Process of preparing viscose rayon
US3009763A (en) * 1958-04-08 1961-11-21 American Viscose Corp Process of producing all skin rayon
US3018158A (en) * 1959-05-05 1962-01-23 Rayonier Inc Viscose process
US3050823A (en) * 1958-10-30 1962-08-28 Beaunit Mills Inc Crimpable regenerated cellulose fibers and yarn
US3097914A (en) * 1960-09-07 1963-07-16 Courtaulds Ltd Process for the production of a ribbon filament yarn of regenerated cellulose
US3097414A (en) * 1958-10-30 1963-07-16 Woodell
US3112986A (en) * 1958-10-30 1963-12-03 Beaunit Corp Process for the production of crimpable regenerated cellulose fibers and yarn
US3126435A (en) * 1956-07-25 1964-03-24 Production of regenerated cellulose
US3182107A (en) * 1956-12-18 1965-05-04 Fmc Corp Method of producing all-skin viscose rayon
US3531560A (en) * 1968-10-28 1970-09-29 Int Paper Canada Spinning of viscose
CN116377607A (zh) * 2023-04-17 2023-07-04 邯郸宏大化纤机械有限公司 一种新型双开盖式过丝通道

Families Citing this family (7)

* Cited by examiner, † Cited by third party
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NL96511C (en(2012)) * 1953-09-16
NL182650B (nl) * 1953-11-09 Phillips Petroleum Co Rotatiegietvormmengsel en werkwijze voor het rotatiegieten.
DE1041638B (de) * 1955-07-27 1958-10-23 Du Pont Verfahren zur Herstellung von Faeden aus regenerierter Cellulose
BE554986A (en(2012)) * 1956-03-02 1900-01-01
NL112538C (en(2012)) * 1956-08-29
GB879946A (en) * 1957-02-11 1961-10-11 Tatsuji Tachikawa Process for the manufacture of highly polymerized viscose rayon
DE1144000B (de) * 1958-12-13 1963-02-21 Stockhausen & Cie Chem Fab Verfahren zum Koagulieren von Viskose

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1877933A (en) * 1928-05-31 1932-09-20 Ig Farbenindustrie Ag Manufacture of artificial textiles
US1880514A (en) * 1929-06-17 1932-10-04 Eastman Kodak Co Cellulose derivative products
US1984303A (en) * 1932-10-04 1934-12-11 American Bemberg Corp Manufacture of artificial silk
US2069805A (en) * 1934-09-15 1937-02-09 Du Pont Cellulosic structures and methods for producing same
US2125031A (en) * 1935-02-16 1938-07-26 American Enka Corp Manufacture of artificial silk
US2310207A (en) * 1938-10-07 1943-02-09 North American Rayon Corp Surface-active incrustation inhibitor
US2340377A (en) * 1939-12-11 1944-02-01 Graumann Erich Process of making artificial fibers
US2364273A (en) * 1941-11-22 1944-12-05 Du Pont Production of cellulosic structures

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1877933A (en) * 1928-05-31 1932-09-20 Ig Farbenindustrie Ag Manufacture of artificial textiles
US1880514A (en) * 1929-06-17 1932-10-04 Eastman Kodak Co Cellulose derivative products
US1984303A (en) * 1932-10-04 1934-12-11 American Bemberg Corp Manufacture of artificial silk
US2069805A (en) * 1934-09-15 1937-02-09 Du Pont Cellulosic structures and methods for producing same
US2125031A (en) * 1935-02-16 1938-07-26 American Enka Corp Manufacture of artificial silk
US2310207A (en) * 1938-10-07 1943-02-09 North American Rayon Corp Surface-active incrustation inhibitor
US2340377A (en) * 1939-12-11 1944-02-01 Graumann Erich Process of making artificial fibers
US2364273A (en) * 1941-11-22 1944-12-05 Du Pont Production of cellulosic structures

Cited By (70)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696423A (en) * 1951-05-29 1954-12-07 Du Pont Viscose modifiers
US2784107A (en) * 1951-12-13 1957-03-05 Courtaulds Ltd Production of artificial filaments, threads and the like
US2813038A (en) * 1953-04-07 1957-11-12 Courtaulds Ltd Production of artificial filaments, threads and the like
US2847272A (en) * 1953-06-25 1958-08-12 Courtaulds Ltd Production of artificial filaments, threads and the like
US2952508A (en) * 1953-09-16 1960-09-13 Rayonier Inc Viscose process and products produced thereby
US2792278A (en) * 1953-09-21 1957-05-14 American Viscose Corp Viscose composition and method of spinning
US2792280A (en) * 1953-09-21 1957-05-14 American Viscose Corp Viscose composition and method of spinning
US2792279A (en) * 1953-09-21 1957-05-14 American Viscose Corp Viscose composition and method of spinning
US2792281A (en) * 1953-09-21 1957-05-14 American Viscose Corp Viscose composition and method of spinning
US2937922A (en) * 1954-03-24 1960-05-24 Rayonier Inc Viscose process
US2914375A (en) * 1954-05-12 1959-11-24 American Enka Corp Manufacture of viscose thread
US2852333A (en) * 1954-05-21 1958-09-16 Du Pont Viscose spinning process
US2810658A (en) * 1954-08-16 1957-10-22 Du Pont Process for spinning modified viscose solution
US2912299A (en) * 1954-09-03 1959-11-10 Chimotex Sa Process of spinning viscose containing thiodiglycol
US2958569A (en) * 1954-10-20 1960-11-01 American Enka Corp Production of threads and other shaped objects from viscose
US2890132A (en) * 1954-11-03 1959-06-09 John A Howsmon Producing all skin viscose rayon
US2916391A (en) * 1954-11-03 1959-12-08 American Viscose Corp Process of producing viscose rayon
US2908581A (en) * 1954-11-03 1959-10-13 American Viscose Corp Producing all skin viscose rayon
US2908583A (en) * 1954-11-03 1959-10-13 American Viscose Corp Method of producing viscose rayon
US2904446A (en) * 1954-11-03 1959-09-15 American Viscose Corp Process of producing viscose rayon
US2906634A (en) * 1954-11-03 1959-09-29 American Viscose Corp Method of producing viscose rayon
US2953425A (en) * 1954-11-25 1960-09-20 American Enka Corp Production of shaped objects from viscose
US2953426A (en) * 1954-11-25 1960-09-20 American Enka Corp Production of shaped objects from viscose
US2940818A (en) * 1954-11-25 1960-06-14 American Enka Corp Production of shaped objects from viscose
US2950208A (en) * 1954-11-25 1960-08-23 American Enka Corp Production of shaped objects from viscose
US2974004A (en) * 1954-11-25 1961-03-07 American Enka Corp Production of shaped objects from viscose
US2855321A (en) * 1955-03-30 1958-10-07 Du Pont Viscose process
US2891836A (en) * 1955-04-26 1959-06-23 Du Pont Viscose process
US2890133A (en) * 1955-06-29 1959-06-09 American Viscose Corp Process of producing all skin rayon
US2989410A (en) * 1955-06-29 1961-06-20 American Viscose Corp All skin viscose rayon and method of preparing same
US2840448A (en) * 1955-06-29 1958-06-24 American Viscose Corp Method of producing all skin rayon
US2979376A (en) * 1955-06-29 1961-04-11 American Viscose Corp Production of rayon
US2890131A (en) * 1955-06-29 1959-06-09 American Viscose Corp Method of producing all skin rayon
US2971817A (en) * 1955-06-29 1961-02-14 American Viscose Corp Producing all skin rayon
US2902381A (en) * 1955-06-29 1959-09-01 American Viscose Corp Method of producing all skin rayon
US2840449A (en) * 1955-06-29 1958-06-24 American Viscose Corp Method of producing all skin rayon
US2908582A (en) * 1955-06-29 1959-10-13 American Viscose Corp Production of all skin rayon
US2841463A (en) * 1955-06-29 1958-07-01 American Viscose Corp Process of producing all skin rayon
US2989366A (en) * 1955-06-29 1961-06-20 American Viscose Corp Method of preparing all skin viscose
US2841462A (en) * 1955-06-29 1958-07-01 American Viscose Corp Production of all skin rayon
US2937070A (en) * 1955-08-02 1960-05-17 Du Pont Viscose process
US2893821A (en) * 1955-09-03 1959-07-07 American Enka Corp Production of yarns of regenerated cellulose having improved properties
US2953468A (en) * 1955-10-25 1960-09-20 American Enka Corp Production of shaped objects from viscose
US2926099A (en) * 1955-12-05 1960-02-23 American Viscose Corp Preparing all skin viscose rayon
US2932578A (en) * 1955-12-05 1960-04-12 American Viscose Corp Method of producing all skin rayon
US2919203A (en) * 1955-12-05 1959-12-29 American Viscose Corp Producing all skin rayon
US2954270A (en) * 1955-12-14 1960-09-27 Chimiotex Sa Process of producing a shrinkable cellulose textile filament
US2970883A (en) * 1956-01-16 1961-02-07 American Enka Corp Manufacture of viscose rayon
US2898222A (en) * 1956-01-30 1959-08-04 Int Paper Canada Manufacture of regenerated cellulose
US2947597A (en) * 1956-02-20 1960-08-02 American Enka Corp Manufacture of viscose rayon
US2860480A (en) * 1956-04-18 1958-11-18 Du Pont Regenerated cellulose structures and process for producing them
US2920973A (en) * 1956-04-23 1960-01-12 American Viscose Corp Preparing viscose rayon
US2962341A (en) * 1956-05-14 1960-11-29 Du Pont Viscose modification
US2893820A (en) * 1956-07-16 1959-07-07 Du Pont Process for the production of regenerated cellulose filaments
US3126435A (en) * 1956-07-25 1964-03-24 Production of regenerated cellulose
US2962342A (en) * 1956-12-17 1960-11-29 American Viscose Corp Process of producing viscose rayon
US2961289A (en) * 1956-12-18 1960-11-22 American Viscose Corp Process of producing viscose rayon
US3182107A (en) * 1956-12-18 1965-05-04 Fmc Corp Method of producing all-skin viscose rayon
US2946782A (en) * 1957-04-05 1960-07-26 Tatsuji Tachikawa Process for the manufacture of viscose rayon staple
US3007764A (en) * 1957-10-01 1961-11-07 Du Pont Process of preparing viscose rayon
US2879170A (en) * 1957-10-02 1959-03-24 Du Pont Chemical composition and process
US3009763A (en) * 1958-04-08 1961-11-21 American Viscose Corp Process of producing all skin rayon
US3050823A (en) * 1958-10-30 1962-08-28 Beaunit Mills Inc Crimpable regenerated cellulose fibers and yarn
US3097414A (en) * 1958-10-30 1963-07-16 Woodell
US3112986A (en) * 1958-10-30 1963-12-03 Beaunit Corp Process for the production of crimpable regenerated cellulose fibers and yarn
US3248466A (en) * 1958-10-30 1966-04-26 Beaunit Corp Process for producing two component crimpable regenerated cellulose fiber
US3018158A (en) * 1959-05-05 1962-01-23 Rayonier Inc Viscose process
US3097914A (en) * 1960-09-07 1963-07-16 Courtaulds Ltd Process for the production of a ribbon filament yarn of regenerated cellulose
US3531560A (en) * 1968-10-28 1970-09-29 Int Paper Canada Spinning of viscose
CN116377607A (zh) * 2023-04-17 2023-07-04 邯郸宏大化纤机械有限公司 一种新型双开盖式过丝通道

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GB654083A (en) 1951-06-06
FR961352A (en(2012)) 1950-05-11
DE860389C (de) 1952-12-22
BE515618A (en(2012))
FR64253E (fr) 1955-11-09

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