US2966390A - Process for the production of etched textile material containing synthetic cellulosefibers - Google Patents

Process for the production of etched textile material containing synthetic cellulosefibers Download PDF

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US2966390A
US2966390A US602446A US60244656A US2966390A US 2966390 A US2966390 A US 2966390A US 602446 A US602446 A US 602446A US 60244656 A US60244656 A US 60244656A US 2966390 A US2966390 A US 2966390A
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textile material
etched
material containing
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spinning solution
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US602446A
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Hoelkeskamp Franz
Hipp Heinz
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JP Bemberg AG
Bemberg AG
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Bemberg AG
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/15—Locally discharging the dyes
    • D06P5/155—Locally discharging the dyes with reductants
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S8/00—Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
    • Y10S8/916—Natural fiber dyeing
    • Y10S8/918—Cellulose textile

Definitions

  • This invention relates to a process for the production of an etched textile material containing synthetic cellulose fibers, and more particularly to a process for the preparation and production of a textile material containing dyed synthetic cellulose fibers in which the dyestufl pigment is partially reduced or decomposed.
  • the principal object of the present invention is to provide a process for the production of an etched and at the same time an ultra-fast dyed textile material containing synthetic cellulose fibers.
  • this principal object is achieved by dispersing a very finely divided, waterinsoluble dyestuff pigment in a cellulosic spinning solution, the dyestuff pigment being capable of being decomposed by a reducing agent, spinning internally dyed synthetic cellulose fibers from the spinning solution, and etching a textile material containing the internally dyed fibers by reaction with a reducing agent.
  • a very fine distribution or dispersion of the dyestufi pigments in the cellulosic spinning solution is advantageously obtained by employing dyestufI pigments having a particle size of not more than five microns. spondingly, internally dyed fibers or filaments are obtained in which the embedded dyestuff pigments, even in the interior of the fibers, can be etched by reaction with a reducing agent. A finely dispersed and highly uniform suspension of the dyestuff pigmetns in the spinning solution is further obtained by the use of a suitable emulsifying agent. Such emulsifiers are well known in the art, and only a small quantity is required to give a satisfactory dispersion of the water-insoluble pigment.
  • the dyestufi pigment selected for the process of the invention should be resistant or inert to the prevailing operating conditions ordinarily employed in spinning synthetic cellulose fibers.
  • a dyestuif pigment to be dispersed in a viscouse spinning solution should be both alkali and acid resistant and should also be fast to sulfur compounds.
  • the dyestutt' pigment is, of course, preferably selected so Corre- 2,966,390 Patented Dec. 27, 1960 as to remain fast to such treatment.
  • the group of Celliton dyestuffs which are water-insoluble and also etchable or decomposable by reduction are likewise suitable for employment in the present process (e.g., see Dyestutl Tables of Schultz, 7th printing, volume 2, pages 44-45; supplemental volume 1, pages and 76; and supplemental volume 2, pages 138-143).
  • azoic dyestuffs which can be utilized as dyestuif pigments, those which have been found to be particularly advantageous include the following combinations of a diazotized aromatic amine component with a naphthol component:
  • SOaNa Celliton dyestuff pigments which have been found to be particularly useful in the practice of the invention include all those Celliton dyestufi pigments which are insoluble in water and etchable with a reducing agent. They may be selected from the group of Celliton dyestuffs classified in Dyestuff Tables of Schultz, 7th printing, volume 2, pages 1-233.
  • the dyestuif pigments are preferably first prepared as aqueous suspension and this suspension then added to the spinning solution.
  • this suspension thenaphthol and diazotized' amineof an" azoid dyestuff should be linked-or combined in an aqueo'us media in the presence of an emulsifi'cation agent.
  • the dyestuif is preferably first dissolved in alcohol after which the alcoholic solution is mixed with water containing a suitable emulsification agent The alcohol can be vaporized so that the dyestuif pigment remains as a fine suspension in the aqueous media.
  • the emulsification agents employed are well known in the artand include, for example, ethoxylated fatty alcohols or ethoxylated alcoylphenols.
  • a suflicient quantity of the dyestuif contained in an aqueous suspension is added to the c'ellulosic. spinning solution to give the desired degree of coloring to the finished textile material.
  • concentration of dyestuff pigments amount to from about 1% to 5%, especially about 2% to.4%, by weight of the cellulose content of the spinning solution.
  • the spinning solution containing thedispersed dyestufl. is extruded in a conventional manner into continuous filaments which can then be made into a textile material,
  • etchable textile material i.e., a textile material containing synthetic cellulose fibers in which there has been internally incorporated a dyestuff pigment capable of being partially reduced or decomposed.
  • the etching step of the process is carried out by subjecting the textile material to the action of a reducing agent, preferably a strong reducing agent such as sodium hydrosulfite.
  • a reducing agent preferably a strong reducing agent such as sodium hydrosulfite.
  • suitable reducing agents include hydrazines and formaldehyde sodiumsulfoxylate, known as Rongalite.
  • the invention is further illustrated by the following examples in which the description includes (a) the production of an aqueous suspension containing the finely dispersed dyestuff pigment, and (b) the preparation of the spinning solution. It is to be understood that the examples are illustrative only and are not intended to limit the scope of the invention. Parts are parts by weight unless otherwise specified.
  • Example 1 (a) 33.9 parts of a diazotized amine (Fast Black Salt G, see Dyestuff Tables of Schultz, 7th printing, supplementary volume 1, page 94) are dissolved in 1000 parts of hot water with the addition of 89 parts of acetic acid and 1.4 parts of an emulsifying agent as an ethoxylated oleyl alcohol with 10-20 moles ethyleneoxide. With very strong stirring there is added a solution of 19 parts of m-nitranilide of 2.3oxynaphthoic acid and an equivalent quantity of caustic soda solution in 2000 parts of water. An aqueous suspension of a water-insoluble dyestulf pigment is thus formed having a pH of 8.2.
  • a diazotized amine Fest Black Salt G, see Dyestuff Tables of Schultz, 7th printing, supplementary volume 1, page 94
  • the internally dyed filaments are woven into a. fabric, and the fabric is then etched by means of sodium hydrosulfite. Various portions of the fabric are etched where the sodium hydrosulfite has decomposedthe dyestulf pig ment.
  • the fabric is also ultra-fast dyed, having a permanent, solid coloring.
  • Example 2 (a) 50.3 parts of a diazotized amine (Fast Gold Orange Salt GR, see Dyestuif Tables ofSchultz, 7th printing, supplementary volume 2, page 178) are dissolved in 1000 parts of hot water with the addition of 16.2 parts of acetic acid and 1.5 parts by weight of a suitable emulsifier as iso-dodecylphenol with 6 moles ethyleneoxide. To this there is added "together with intensive stirring a solution consisting of 16.3 parts of the o-toluidide of 2.3-oxynaphthoic acid in 2000'parts of water and an equivalent amount of caustic soda solution. The pH is set at 8.2 to 8.3 in the resulting suspension.
  • a diazotized amine Fest Gold Orange Salt GR, see Dyestuif Tables ofSchultz, 7th printing, supplementary volume 2, page 178
  • a suitable emulsifier as iso-dodecylphenol with 6 moles ethyleneoxide
  • a textile fabric is produced which can be etched by means of sodium hydrosulfite.
  • Example 3 10 parts of Celliton Fast Yellow G (see Dyestuif Tables of Schultz, 7th printing, volume 2, page 45) are dissolved in 85 parts of 96% alcohol as the solution is warmed.
  • the initial dye solution is introduced drop by drop into 1000 parts of water being vigorously stirred, the water containing 0.1% of an emulsifier, as in Example 2, Lavagent.
  • a finely dispersed dyestuif suspension results.
  • the alcohol is vaporized and the suspension is set at a pH value of 8.2.
  • Example 4 such a quantity that the spinning solution will contain 3% of dyestuif pigment with reference to the cellulose content.
  • the spinning process is accomplished in the usual manner.
  • the internally dyed filaments are woven into a fabric,
  • Example 5 An aqueous suspension of a water-insoluble dyestutf pigment is produced in the same manner as Example 2 except that the following dyestuff pigments were employed:
  • a process for the production of an etched textile material containing synthetic cellulose fibers which comprises dispersing a very finely divided, water-insoluble organic dyestufi in a cellulosic spinning solution, said dyestuff being capable of being decomposed by a reducing agent, spinning internally dyed synthetic cellulose fibers from said spinning solution, and etching a textile material containing said internally dyed fibers by reaction with a reducing agent.
  • a process for the production of an etched textile material containing synthetic cellulose fibers which comprises dispersing a very finely divided, water-insoluble organic dyestuff in the presence of an emulsifying agent in a cellulosic spinning solution such that the quantity of said dyestuif is from about 1% to 5% by weight of the cellulose content of said spinning solution, said dyestuff being capable of being decomposed by a reducing agent, spinning internally dyed synthetic cellulose fibers from said spinning solution, and etching a textile material containing said internally dyed fibers by reaction with a reducing agent.
  • a process for the production of an etched textile material containing synthetic cellulose fibers which comprises dispersing a very finely divided, water-insoluble organic dyestuff in the presence of an emulsifying agent in a cellulosic spinning solution such that the quantity of said dyestufi is from about 2% to 4% by weight of the cellulose content of said spinning solution, said dyestuif being capable of being decomposed by a reducing agent, spinning internally dyed synthetic cellulose fibers from said spinning solution, and etching a textile material containing said internally dyed fibers by reaction with a strong reducing agent.
  • a process of producing color-fast etched designs on a textile material containing synthetic cellulose fibers which comprises applying a reducing agent to selected portions of said textile material in which the cellulose fibers have been uniformly colored by dispersing a finely divided, water-insoluble organic dyestufi in an aqueous cellulosic spinning solution prior to spinning said fibers, said dyestufi being capable of being decomposed by said reducing agent.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Coloring (AREA)

Description

PROCESS FOR THE PRODUCTION OF ETCHED TEXTILE MATERIAL CONTAINING SYNTHETIC CELLULOSE FIBERS Franz Hoelkeskamp, Wuppertal-Langerfeld, and Heinz Hipp, Wnppertal-Barmen, Germany, assignors to J. P. Bemberg Aktiengesellschaft, Wuppertal-Oberbarmen, Germany No Drawing. Filed Aug. 6, 1956, Ser. No. 602,446 Claims priority, application Germany Aug. 8, 1955 11 Claims. (CI. 18-54) This invention relates to a process for the production of an etched textile material containing synthetic cellulose fibers, and more particularly to a process for the preparation and production of a textile material containing dyed synthetic cellulose fibers in which the dyestufl pigment is partially reduced or decomposed.
It is a familiar practice to apply suitable dyestuffs to finished textiles in the form of threads, yarns, cloth, fabric or the like containing synthetic cellulose fibers, and then etching the textile material in a subsequent manufacturing operation. The etching step of the process includes the decomposition of dystufi pigment by reaction with a reducing agent in order to partially remove or destroy the dye at various locations or places on the textile material. It is also a familiar practice to apply insoluble dyestutf pigments to a spinning solution shortly before spinning synthetic filaments or fibers therefrom in order to produce an internally dyed fiber which can be made into ultra-fast dyed textile materials.
The principal object of the present invention is to provide a process for the production of an etched and at the same time an ultra-fast dyed textile material containing synthetic cellulose fibers. Other objects and advantages of the invention will become more apparent upon a consideration of the following description of the invention.
In accordance with the invention, this principal object is achieved by dispersing a very finely divided, waterinsoluble dyestuff pigment in a cellulosic spinning solution, the dyestuff pigment being capable of being decomposed by a reducing agent, spinning internally dyed synthetic cellulose fibers from the spinning solution, and etching a textile material containing the internally dyed fibers by reaction with a reducing agent.
A very fine distribution or dispersion of the dyestufi pigments in the cellulosic spinning solution is advantageously obtained by employing dyestufI pigments having a particle size of not more than five microns. spondingly, internally dyed fibers or filaments are obtained in which the embedded dyestuff pigments, even in the interior of the fibers, can be etched by reaction with a reducing agent. A finely dispersed and highly uniform suspension of the dyestuff pigmetns in the spinning solution is further obtained by the use of a suitable emulsifying agent. Such emulsifiers are well known in the art, and only a small quantity is required to give a satisfactory dispersion of the water-insoluble pigment.
Naturally, the dyestufi pigment selected for the process of the invention should be resistant or inert to the prevailing operating conditions ordinarily employed in spinning synthetic cellulose fibers. Thus, a dyestuif pigment to be dispersed in a viscouse spinning solution should be both alkali and acid resistant and should also be fast to sulfur compounds. Where conventional chemical treatments of the fibers and/ or textile material, such as soaping, desulfurizing and the like are employed, the dyestutt' pigment is, of course, preferably selected so Corre- 2,966,390 Patented Dec. 27, 1960 as to remain fast to such treatment. These modifications and limitations of the dyestufi employed will be readily apparent to those skilled in the art and are mentioned herein merely as an aid in selecting suitable dyestufis' without departing from the spirit and scope of the in vention.
Examples of particular dyestuffs which are especially useful in the process of the invention include water-in soluble, etchable dyestuff pigments obtained as the re action products or coupling products of naphthols with diazotized aromatic amines, these reaction products being commonly classed as azoic dyestuffs. The group of Celliton dyestuffs which are water-insoluble and also etchable or decomposable by reduction are likewise suitable for employment in the present process (e.g., see Dyestutl Tables of Schultz, 7th printing, volume 2, pages 44-45; supplemental volume 1, pages and 76; and supplemental volume 2, pages 138-143).
Among the azoic dyestuffs which can be utilized as dyestuif pigments, those which have been found to be particularly advantageous include the following combinations of a diazotized aromatic amine component with a naphthol component:
Fast Black Salt G, m-nitranilide of 2.3-oxynaphthoic acid;
Fast Gold Orange Salt GR, o-toluidide of 2.3-oxynaphthoic acid:
Pigment Fast (Schultz No.
Oil Red (Schultz No. 118) Oil Vermillion (Schultz No. 149) Polarorange R conc. (Schultz No. 367) :EIIZN SlOaNa.
SOaNa Celliton dyestuff pigments which have been found to be particularly useful in the practice of the invention include all those Celliton dyestufi pigments which are insoluble in water and etchable with a reducing agent. They may be selected from the group of Celliton dyestuffs classified in Dyestuff Tables of Schultz, 7th printing, volume 2, pages 1-233.
The dyestuif pigments are preferably first prepared as aqueous suspension and this suspension then added to the spinning solution. In order to ensure a uniform distribution ofthe dyestuff pigments as a suspensioninan aqueous solution, thenaphthol and diazotized' amineof an" azoid dyestuff should be linked-or combined in an aqueo'us media in the presence of an emulsifi'cation agent.- Likewise, in preparingan aqueous suspension of a Celliton dyestuif, the dyestuif is preferably first dissolved in alcohol after which the alcoholic solution is mixed with water containing a suitable emulsification agent The alcohol can be vaporized so that the dyestuif pigment remains as a fine suspension in the aqueous media. The emulsification agents employed are well known in the artand include, for example, ethoxylated fatty alcohols or ethoxylated alcoylphenols.
A suflicient quantity of the dyestuif contained in an aqueous suspension is added to the c'ellulosic. spinning solution to give the desired degree of coloring to the finished textile material. Generally, it is preferred that the concentration of dyestuff pigments amount to from about 1% to 5%, especially about 2% to.4%, by weight of the cellulose content of the spinning solution.
The spinning solution containing thedispersed dyestufl. is extruded in a conventional manner into continuous filaments which can then be made into a textile material,
as by collecting a plurality of fibers in the form of a thread or yarn and weaving the fibers into a fabric, cloth, or the like. Internally dyed fibers or filaments are thus contained in an etchable textile material, i.e., a textile material containing synthetic cellulose fibers in which there has been internally incorporated a dyestuff pigment capable of being partially reduced or decomposed.
The etching step of the process is carried out by subjecting the textile material to the action of a reducing agent, preferably a strong reducing agent such as sodium hydrosulfite. Other suitable reducing agents include hydrazines and formaldehyde sodiumsulfoxylate, known as Rongalite.
The invention is further illustrated by the following examples in which the description includes (a) the production of an aqueous suspension containing the finely dispersed dyestuff pigment, and (b) the preparation of the spinning solution. It is to be understood that the examples are illustrative only and are not intended to limit the scope of the invention. Parts are parts by weight unless otherwise specified.
Example 1 (a) 33.9 parts of a diazotized amine (Fast Black Salt G, see Dyestuff Tables of Schultz, 7th printing, supplementary volume 1, page 94) are dissolved in 1000 parts of hot water with the addition of 89 parts of acetic acid and 1.4 parts of an emulsifying agent as an ethoxylated oleyl alcohol with 10-20 moles ethyleneoxide. With very strong stirring there is added a solution of 19 parts of m-nitranilide of 2.3oxynaphthoic acid and an equivalent quantity of caustic soda solution in 2000 parts of water. An aqueous suspension of a water-insoluble dyestulf pigment is thus formed having a pH of 8.2.
(b) 3,120 parts of this suspension, which contains 52.9 parts of the dyestufi pigment, are added with constant stirring to 14,650 parts of a cuprarnrnonium solution having a cellulose content of 12% by weight. After the solution has been well homogenized, 1,730 parts of water are further added to give a cellulose content of 9% by weight of the spinning solution. The spinning solution, which contains 3% of dyestuff pigments with reference to the cellulose content, is then spun by extrusion in the usual manner to form a plurality of internally dyed continuous filaments.
The internally dyed filaments are woven into a. fabric, and the fabric is then etched by means of sodium hydrosulfite. Various portions of the fabric are etched where the sodium hydrosulfite has decomposedthe dyestulf pig ment. The fabric is also ultra-fast dyed, having a permanent, solid coloring.
Example 2 (a) 50.3 parts of a diazotized amine (Fast Gold Orange Salt GR, see Dyestuif Tables ofSchultz, 7th printing, supplementary volume 2, page 178) are dissolved in 1000 parts of hot water with the addition of 16.2 parts of acetic acid and 1.5 parts by weight of a suitable emulsifier as iso-dodecylphenol with 6 moles ethyleneoxide. To this there is added "together with intensive stirring a solution consisting of 16.3 parts of the o-toluidide of 2.3-oxynaphthoic acid in 2000'parts of water and an equivalent amount of caustic soda solution. The pH is set at 8.2 to 8.3 in the resulting suspension.
(1)) 1,500 parts of the dyestuif suspension thus pre pared, which contains 33.3 parts of the dyestufi pigment, are added with constant stirring to 9,250 parts of a viscose spinning solution which contains 9% by weight of cellulose. After the dyestufi pigments are evenly distributed, 3,150 parts of water are further added so that a solution ready for spinning is provided having a content of 6% by weight of cellulose. The concentration of the dyestuif pigment amounts to 4% by weight with reference to the cellulose.
From the internally dyed spun filaments, a textile fabric is produced which can be etched by means of sodium hydrosulfite.
Example 3 (a) 10 parts of Celliton Fast Yellow G (see Dyestuif Tables of Schultz, 7th printing, volume 2, page 45) are dissolved in 85 parts of 96% alcohol as the solution is warmed. The initial dye solution is introduced drop by drop into 1000 parts of water being vigorously stirred, the water containing 0.1% of an emulsifier, as in Example 2, Lavagent. A finely dispersed dyestuif suspension results. The alcohol is vaporized and the suspension is set at a pH value of 8.2.
(b) 3,120 parts of this suspension are added to 14,650 parts of a cuprammonium spinning solution which has a cellulose content of 12% by weight. The remainder of the process is carried out in accordance with the procedure described in Example 1(b) to obtain a fabric etched by sodium hydrosulfite.
Example 4 such a quantity that the spinning solution will contain 3% of dyestuif pigment with reference to the cellulose content.
The spinning process is accomplished in the usual manner. The internally dyed filaments are woven into a fabric,
which is then etched by means of sodium hydrosulfite.
Example 5 (a) An aqueous suspension of a water-insoluble dyestutf pigment is produced in the same manner as Example 2 except that the following dyestuff pigments were employed:
Oil Vermillon (Schultz No. 149) Pigment Fast (Schultz No. P olarorange R cone. (Schultz No. 367) etching process will be accomplished in several steps one gets different color shades also with clear contours,
The invention is hereby claimed as follows:
1. A process for the production of an etched textile material containing synthetic cellulose fibers which comprises dispersing a very finely divided, water-insoluble organic dyestufi in a cellulosic spinning solution, said dyestuff being capable of being decomposed by a reducing agent, spinning internally dyed synthetic cellulose fibers from said spinning solution, and etching a textile material containing said internally dyed fibers by reaction with a reducing agent.
2. A process as defined in claim 1 wherein the dyestufi .is an azoic dyestuif.
3. A process as defined in claim 1 wherein the dyestufi" has a particle size of not more than five microns.
4. A process as defined in claim 1 wherein the dispersion of the dyestufi is accomplished in the presence of an emulsifying agent.
5. A process for the production of an etched textile material containing synthetic cellulose fibers which comprises dispersing a very finely divided, water-insoluble organic dyestuff in the presence of an emulsifying agent in a cellulosic spinning solution such that the quantity of said dyestuif is from about 1% to 5% by weight of the cellulose content of said spinning solution, said dyestuff being capable of being decomposed by a reducing agent, spinning internally dyed synthetic cellulose fibers from said spinning solution, and etching a textile material containing said internally dyed fibers by reaction with a reducing agent.
6. A process for the production of an etched textile material containing synthetic cellulose fibers which comprises dispersing a very finely divided, water-insoluble organic dyestuff in the presence of an emulsifying agent in a cellulosic spinning solution such that the quantity of said dyestufi is from about 2% to 4% by weight of the cellulose content of said spinning solution, said dyestuif being capable of being decomposed by a reducing agent, spinning internally dyed synthetic cellulose fibers from said spinning solution, and etching a textile material containing said internally dyed fibers by reaction with a strong reducing agent.
7. A process as defined in claim 6 wherein the reducing agent is sodium hydrosulfite.
8. A process as defined in claim 6 wherein the reducing agent is hydrazine.
9. A process as defined in claim 6 wherein the reducing agent is formaldehyde sodiumsulfoxylate.
10. A process of producing color-fast etched designs on a textile material containing synthetic cellulose fibers which comprises applying a reducing agent to selected portions of said textile material in which the cellulose fibers have been uniformly colored by dispersing a finely divided, water-insoluble organic dyestufi in an aqueous cellulosic spinning solution prior to spinning said fibers, said dyestufi being capable of being decomposed by said reducing agent.
11. A process as defined in claim 10 wherein the dyestutf is an azoic dyestuft.
References Cited in the file of this patent UNITED STATES PATENTS 2,143,883 Kline et a1 Jan. 17, 1939 2,166,741 Karplus July 18, 1939 2,210,774 Pern'n et a1. Aug. 6, 1940 2,261,295 Schlack Nov. 4, 1941 2,345,345 Koch Mar. 28, 1944 2,385,885 Seymour et a1. Oct. 2, 1945 2,457,808 Dort Jan. 4, 1949 2,583,192 Waite Jan. 22, 1952 2,650,168 Van Dijk Aug. 25, 1953

Claims (1)

1. A PROCESS FOR THE PRODUCTION OF AN ETCHED TEXTILE MATERIAL CONTAINING SYNTHETIC CELLULOSE FIBERS WHICH COMPRISES DISPERSING A VERY FINELY DIVIDED, WATER-INSOLUBLE ORGANIC DYESTUFF IN A CELLULOSIC SPINNING SOLUTION, SAID DYESTUFF BEING CAPABLE OF BEING DECOMPOSED BY A REDUCING AGENT, SPINNING INTERNALLY DYED SYNTHETIC CELLULOSE FIBERS FROM SAID SPINNING SOLUTION, AND ETCHING A TEXTILE MATERIAL CONTAINING SAID INTERNALLY DYED FIBERS BY REACTION WITH A REDUCING AGENT.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3279974A (en) * 1963-01-03 1966-10-18 Allied Chem Visibly distinctive melt spun pigmented yarn

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2143883A (en) * 1934-08-23 1939-01-17 Ind Rayon Corp Manufacture of artificial silk
US2166741A (en) * 1926-12-08 1939-07-18 North American Rayon Corp Artificial silk
US2210774A (en) * 1936-02-04 1940-08-06 Ici Ltd Fibers from ethylene polymers
US2261295A (en) * 1936-09-30 1941-11-04 Walther H Duisberg Artificial textile materials
US2345345A (en) * 1939-08-01 1944-03-28 American Enka Corp Manufacture of rayon
US2385885A (en) * 1942-02-28 1945-10-02 Celanese Corp Discharge printing of cellulose acetate
US2457808A (en) * 1945-03-14 1949-01-04 Celanese Corp Fluorescent red cellulose acetate fibers
US2583192A (en) * 1949-09-17 1952-01-22 Waite Carpet Company Rug
US2650168A (en) * 1948-10-18 1953-08-25 American Enka Corp Method for dispersing an immiscible pigment in viscose solution

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2166741A (en) * 1926-12-08 1939-07-18 North American Rayon Corp Artificial silk
US2143883A (en) * 1934-08-23 1939-01-17 Ind Rayon Corp Manufacture of artificial silk
US2210774A (en) * 1936-02-04 1940-08-06 Ici Ltd Fibers from ethylene polymers
US2261295A (en) * 1936-09-30 1941-11-04 Walther H Duisberg Artificial textile materials
US2345345A (en) * 1939-08-01 1944-03-28 American Enka Corp Manufacture of rayon
US2385885A (en) * 1942-02-28 1945-10-02 Celanese Corp Discharge printing of cellulose acetate
US2457808A (en) * 1945-03-14 1949-01-04 Celanese Corp Fluorescent red cellulose acetate fibers
US2650168A (en) * 1948-10-18 1953-08-25 American Enka Corp Method for dispersing an immiscible pigment in viscose solution
US2583192A (en) * 1949-09-17 1952-01-22 Waite Carpet Company Rug

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3279974A (en) * 1963-01-03 1966-10-18 Allied Chem Visibly distinctive melt spun pigmented yarn

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