US3472607A - Low temperature dyeing of synthetic polyamide fibers - Google Patents

Low temperature dyeing of synthetic polyamide fibers Download PDF

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US3472607A
US3472607A US518023A US3472607DA US3472607A US 3472607 A US3472607 A US 3472607A US 518023 A US518023 A US 518023A US 3472607D A US3472607D A US 3472607DA US 3472607 A US3472607 A US 3472607A
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dyeing
parts
carpet
acid
low temperature
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US518023A
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Ira Sapers
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Sandoz Inc
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Arkansas Co Inc
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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
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/60—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing polyethers
    • D06P1/613—Polyethers without nitrogen
    • D06P1/6131—Addition products of hydroxyl groups-containing compounds with oxiranes
    • D06P1/6133—Addition products of hydroxyl groups-containing compounds with oxiranes from araliphatic or aliphatic alcohols
    • 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
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/39—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using acid dyes
    • 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
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/60—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing polyethers
    • D06P1/607—Nitrogen-containing polyethers or their quaternary derivatives
    • D06P1/6076—Nitrogen-containing polyethers or their quaternary derivatives addition products of amines and alkylene oxides or oxiranes
    • 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
    • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
    • D06P3/02—Material containing basic nitrogen
    • D06P3/04—Material containing basic nitrogen containing amide groups
    • D06P3/24—Polyamides; Polyurethanes
    • D06P3/241—Polyamides; Polyurethanes using acid dyes
    • 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
    • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
    • D06P3/82—Textiles which contain different kinds of fibres
    • D06P3/8204—Textiles which contain different kinds of fibres fibres of different chemical nature
    • D06P3/8219—Textiles which contain different kinds of fibres fibres of different chemical nature mixtures of fibres containing hydroxyl and amide groups
    • 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
    • Y10S8/907—Nonionic emulsifiers for dyeing
    • 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
    • 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
    • Y10S8/92—Synthetic fiber dyeing
    • Y10S8/924—Polyamide fiber
    • 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
    • Y10S8/929—Carpet dyeing

Definitions

  • This invention relates to a process of dyeing synthetic polyamide fibers at low temperatures, to preparations used in the course of such dyeing and to polyamide fibers dyed by said process.
  • the invention refers to both continuous filaments and staple fibers and is particularly concerned with synthetic polyamides used in the manufacture of carpets.
  • polyamide carpet yarns and polyamide carpets with a jute backing are mostly dyed by disperse dyes due to their case of application and good levelling properties.
  • Disperse dyes are generally used in alkaline bath which minimizes to a certain extent the staining of the nylon pile by jute backing.
  • disperse dyes do not have adquate fastness to light and to wet cleaning which are required of carpets.
  • acid dyes which of course must be used in an acid bath. Under such conditions the dark colored compounds in the jute backing, such as lignins, are readily absorbed by the nylon carpet face.
  • the light fastness of the absorbed stain is very poor, and when the carpets are dyed in light colors, dull shades will, be particularly noticeable. It should be also noted that at the present time all dyeing, with disperse dyes as well as with acid dyes, is usually carried out at or near the boil, namely, at about 200 F. and 212 F. Such high temperatures tend to intensify jute staining during the dyeing and to cause distortion of the staple nylon pile.
  • An object of the present invention is the provision of a dyeing process which will eliminate the staining of the polyamide face pile by the jute backing.
  • Another object is the provision of a dyeing process which provides a considerable saving in steam, time and labor as compared to prior art processes, which is simple in its application and which will make it possible to effectively dye polyamide carpet yarns and polyamide carpet fabrics having a jute backing with selected acid dyes at comparatively low temperatures.
  • Yet another object is the provision of a dyeing process which will minimize the distortion of the face pile and thus improve the physical appearance of the carpet fabric.
  • Still another object is the provision of dyeing compositions capable of effectively dyeing polyamide carpet yarns and polyamide carpets with a jute backing.
  • the first component consists of a leveling agent having moderately retarding properties.
  • the second component consists of a buffer salt which is capable of controlling the pH during the dyeing process to between 5.5 and 7 .5.
  • the leveling agent used in the process of the present invention has components which are selected from:
  • the preferred components are an ethoxylated fatty amine having 10 to 20 mols ethylene oxide and an ethoxylated fatty alcohol having 20 to 30 mols ethylene oxide.
  • the preferred proportions are 3 to 5 parts of the fatty amine to 5 parts of the ethoxylated fatty alcohol.
  • the buffer salt used in the process of the present invention must control the pH during dyeing to between 5.5 and 7.5 and preferably between 6.0 and 7.0. It was found that this is most important to achieve the desired results.
  • the components of the buffer salt are an alkali metal salt of phosphoric acid and an alkali metal salt of a volatile acid such as acetic or formic acid.
  • the preferred components are monosodium or monopotassium phosphate and sodium or potassium formate.
  • the proportion of leveling agent to buffer salt may be from 0.5 to 3.0 parts leveling agent to 2 to 5 parts buffer salt, the preferred proportion being from 1 to 2.5 parts leveling agent to 3 to- 4.25 parts buffer salt.
  • the process of the present invention may be carried out at a temperature range of F.180 F., but the preferred range is F. F.
  • the bath ratio used in practicing the invention may be from 20:1 up to 60:1 and preferably is from 25:1 to 40:1.
  • Example III Dyeing was carried out on pre-scoured carpet type 814 (Du Pont) in the same manner as in Example IV, except that 0.5% (OWF) monosodium phosphate and 2.0% (OWF) sodium formate were used.
  • Dyeing was carried out at 155 -160 F. for 1.25 hours. pH of dyebath after completion of dyeing6.8. Resultant dyeing was level, well penetrated and otherwise similar to Example IV.
  • Example IV 40:1 dye bath was prepared at 100 F. with:
  • Example V 25 :1 dye bath was prepared at F. with:
  • Staple nylon carpet (type 814 Du Pont) was entered and worked for about ten minutes. 2.0% (OWF) Pontacyl Red LN, pre-dissolved, was then added, bath heated gradually to 155 F. and dyeing continued at 155-160 F. for 1.5 hours. Bath was cooled, dropped, carpet rinsed thoroughly and dried. Resultant dyeing was bright. Pile was thoroughly penetrated, and the fastness properties were satisfactory. pH after dyeing6.1.
  • the buffer salt comprises an alkali metal salt of phosphoric acid and an alkali metal salt of a volatile acid selected from the group consisting of acetic and formic acids, the proportion of leveling agent to buffer salt being 0.5 to 3.0 parts leveling agent to 20 to 5.0 parts buffer salt.
  • a preparation for a dye bath for a jute backed polyamide carpet comprising a leveling agent comprising an ethoxylated fatty amine having 5 to 50 mols ethylene oxide and an ethoxylated fatty alcohol having 10 to 50 mols ethylene oxide, the proportions being 3 to 5 parts of the fatty amine to 5 parts fatty alcohol, and a buffer salt controlling the pH range to 5.5 to 7.5, the proportion of leveling agent to buffer salt being 0.5 to 3.0 parts leveling agent to 2.0 to 5.0 parts buffer salt.
  • the leveling agent comprises an ethoxylated fatty amine having 10 to 20 mols ethylene oxide and an ethoxylated fatty alcohol having 20 to 30 mols ethylene oxide, the proportions being 3 to 5 parts of the fatty amine to 5 parts of the ethoxylated fatty alcohol.
  • said buffer salt comprises an alkali metal salt of phosphoric acid and an alkali metal salt of a volatile acid selected from the group consisting of acetic and formic acids.
  • said buffer salt comprises a phosphate selected from the group consisting of monosodium phosphate and monopotassium phosphate and a formate selected from the group consisting of sodium formate and potassium formate, the proportions being 0.5 to 4 parts of the alkali phosphate and 0.25 to 2 parts of the alkali formate.
  • NORMAN A. TORCHIN Primary Examiner Innarone.

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

Description

United States Patent US. Cl. 8-21 9 Claims ABSTRACT OF THE DISCLOSURE Synthetic polyamide carpets and jute-backed nylon carpets are .dyed at a relatively low temperature range of 120180 F., and at a controlled pH using specified leveling agents and buffer salts to controlled pH in the range of 5.5 to 7.0.
This invention relates to a process of dyeing synthetic polyamide fibers at low temperatures, to preparations used in the course of such dyeing and to polyamide fibers dyed by said process. The invention refers to both continuous filaments and staple fibers and is particularly concerned with synthetic polyamides used in the manufacture of carpets.
At the present time polyamide carpet yarns and polyamide carpets with a jute backing are mostly dyed by disperse dyes due to their case of application and good levelling properties. Disperse dyes are generally used in alkaline bath which minimizes to a certain extent the staining of the nylon pile by jute backing. However, disperse dyes do not have adquate fastness to light and to wet cleaning which are required of carpets. To improve fastness, attempts have been made to use acid dyes which of course must be used in an acid bath. Under such conditions the dark colored compounds in the jute backing, such as lignins, are readily absorbed by the nylon carpet face. The light fastness of the absorbed stain is very poor, and when the carpets are dyed in light colors, dull shades will, be particularly noticeable. It should be also noted that at the present time all dyeing, with disperse dyes as well as with acid dyes, is usually carried out at or near the boil, namely, at about 200 F. and 212 F. Such high temperatures tend to intensify jute staining during the dyeing and to cause distortion of the staple nylon pile.
An object of the present invention is the provision of a dyeing process which will eliminate the staining of the polyamide face pile by the jute backing.
Another object is the provision of a dyeing process which provides a considerable saving in steam, time and labor as compared to prior art processes, which is simple in its application and which will make it possible to effectively dye polyamide carpet yarns and polyamide carpet fabrics having a jute backing with selected acid dyes at comparatively low temperatures.
Yet another object is the provision of a dyeing process which will minimize the distortion of the face pile and thus improve the physical appearance of the carpet fabric.
Still another object is the provision of dyeing compositions capable of effectively dyeing polyamide carpet yarns and polyamide carpets with a jute backing.
Other objects of the present invention will become apparent in the course of the following specification.
In the accomplishment of the objectives of the present invention it was found necessary to employ a combination of the following two components:
3,472,607 Patented Oct. 14, 1969 The first component consists of a leveling agent having moderately retarding properties.
The second component consists of a buffer salt which is capable of controlling the pH during the dyeing process to between 5.5 and 7 .5.
FIRST COMPONENT The leveling agent used in the process of the present invention has components which are selected from:
(a) An ethoxylated fatty amine having 5 to 50 mols ethylene oxide.
(b) An ethoxylated fatty alcohol having 10 to 50 mols ethylene oxide.
The preferred components are an ethoxylated fatty amine having 10 to 20 mols ethylene oxide and an ethoxylated fatty alcohol having 20 to 30 mols ethylene oxide.
The preferred proportions are 3 to 5 parts of the fatty amine to 5 parts of the ethoxylated fatty alcohol.
SECOND COMPONENT The buffer salt used in the process of the present invention must control the pH during dyeing to between 5.5 and 7.5 and preferably between 6.0 and 7.0. It was found that this is most important to achieve the desired results. The components of the buffer salt are an alkali metal salt of phosphoric acid and an alkali metal salt of a volatile acid such as acetic or formic acid.
The preferred components are monosodium or monopotassium phosphate and sodium or potassium formate.
The proportion of leveling agent to buffer salt may be from 0.5 to 3.0 parts leveling agent to 2 to 5 parts buffer salt, the preferred proportion being from 1 to 2.5 parts leveling agent to 3 to- 4.25 parts buffer salt.
The process of the present invention may be carried out at a temperature range of F.180 F., but the preferred range is F. F. The bath ratio used in practicing the invention may be from 20:1 up to 60:1 and preferably is from 25:1 to 40:1.
The following examples of the products and processes of the present invention are given solely by way of illustration and not by way of limitation:
FIRST COMPONENT Ethoxylated stearyl+palmityl alcohol (20 mols)- 25 Each product is made up to 100 parts with water after adjusting pH to about 7.0 with a small amount of acetic acid.
Percent (OWF Monosodium phosphate 2.0 Sodium formate 1.0 Product 3 2.0
A piece of pre-scoured carpet of nylon 66 staple (Du Pont Type 814) with jute backing was entered and run for about minutes.
Pro-dissolved dyes were then added:
Percent (OWF) Telon Yellow BL (Verona Dyestulf) 1 0.180 Telon Red BL (Verona Dyestuff) 1 0.096 Telon Blue BL (Verona Dyestuff) 1 0.030
30:1 dye bath was prepared at 90 F. with:
Percent (OWF) Monosodium phosphate 2.0 Sodium formate 1.0 Product 2 2.5
Pre-scoured staple nylon 66 carpet (type 814 Du Pont) was entered and worked for about 10 minutes. Pre-dissolved dyes:
Percent (OWF) Nylomine Yellow GS (I.C.I. Organics) 0.230 Nylomine Red 2BS (I.C.I. Organics) 0.096
Acid Blue 25 0.030
These dyes have no color index numbers.
Bath was heated gradually to 150 F. and dyeing continued at 145-150 F. for one hour. pH of bath at completion of dyeing6.2. Resultant dyeing was very level, nylon pile face was thoroughly penetrated, there was practically no distortion of pile or staining by jute backing.
Example III Dyeing was carried out on pre-scoured carpet type 814 (Du Pont) in the same manner as in Example IV, except that 0.5% (OWF) monosodium phosphate and 2.0% (OWF) sodium formate were used. Initial pH of dyebath6.9. Dyeing was carried out at 155 -160 F. for 1.25 hours. pH of dyebath after completion of dyeing6.8. Resultant dyeing was level, well penetrated and otherwise similar to Example IV.
Example IV 40:1 dye bath was prepared at 100 F. with:
Percent (OWF) Monosodium phosphate 3.0 Sodium formate 1.0 Product 1 1.25
Pre-scoured nylon carpet, type 814 (Du Pont), was entered and worked for about 10 minutes.
Pre-dissolved dyes:
Percent (OWF) Acid Yellow 114 0.063 Acid Black 64 0.0063 Acid Brown 45 0.2700
were added, bath heated gradually to 180 F. and dyeing continued at this temperature for one hour. Bath was cooled, carpet rinsed thoroughly and dried. Resultant dyeing was level, there was very little distortion of the pile and minimum staining by the jute. pH of dyebath after completion of dyeing-60.
Example V 25 :1 dye bath was prepared at F. with:
Percent (OWF) Monosodium phosphate 4.0 Sodium formate 0.25 Product 2 1.0
Staple nylon carpet (type 814 Du Pont) was entered and worked for about ten minutes. 2.0% (OWF) Pontacyl Red LN, pre-dissolved, was then added, bath heated gradually to 155 F. and dyeing continued at 155-160 F. for 1.5 hours. Bath was cooled, dropped, carpet rinsed thoroughly and dried. Resultant dyeing was bright. Pile was thoroughly penetrated, and the fastness properties were satisfactory. pH after dyeing6.1.
It is apparent that the above described examples were given solely by way of illustration and not by way of limitation and that they are subject to many variations and modifications within the scope of the present invention. All such variations and modifications are to be included within the scope of the present invention.
What is claimed is:
1. The process which comprises dyeing jute backed nylon carpets with acid dyes at a temperature range of F. to 180 F. and within a controlled pH range of 5.5 to 7.5 in the presence of a leveling agent comprising an ethoxylated fatty amine having 5 to 50 mols ethylene oxide and an ethoxylated fatty alcohol having 10 to 50 mols ethylene oxide, the proportions being 3 to 5 parts of the fatty amine to 5 parts fatty alcohol, and a buffer salt controlling said pH range of 5.5 to 7.5 and in which the dye bath is acidic at the completion of dyeing, whereby the pile of the dyed carpet is rendered substantially free from distortion and staining by the jute.
2. The process in accordance with claim 1, wherein the buffer salt comprises an alkali metal salt of phosphoric acid and an alkali metal salt of a volatile acid selected from the group consisting of acetic and formic acids, the proportion of leveling agent to buffer salt being 0.5 to 3.0 parts leveling agent to 20 to 5.0 parts buffer salt.
3. The process in accordance with claim 1, wherein the temperature range is F. to F.
4. The process in accordance with claim 1, wherein the pH range is 6.0 to 7.0.
5. The process in accordance with claim 1, wherein the dyeing takes place in a beck or winch.
6. A preparation for a dye bath for a jute backed polyamide carpet, comprising a leveling agent comprising an ethoxylated fatty amine having 5 to 50 mols ethylene oxide and an ethoxylated fatty alcohol having 10 to 50 mols ethylene oxide, the proportions being 3 to 5 parts of the fatty amine to 5 parts fatty alcohol, and a buffer salt controlling the pH range to 5.5 to 7.5, the proportion of leveling agent to buffer salt being 0.5 to 3.0 parts leveling agent to 2.0 to 5.0 parts buffer salt.
7. A preparation in accordance with claim 6, wherein the leveling agent comprises an ethoxylated fatty amine having 10 to 20 mols ethylene oxide and an ethoxylated fatty alcohol having 20 to 30 mols ethylene oxide, the proportions being 3 to 5 parts of the fatty amine to 5 parts of the ethoxylated fatty alcohol.
8. A preparation in accordance with claim 6 wherein said buffer salt comprises an alkali metal salt of phosphoric acid and an alkali metal salt of a volatile acid selected from the group consisting of acetic and formic acids.
9. A preparation in accordance with claim 6, wherein said buffer salt comprises a phosphate selected from the group consisting of monosodium phosphate and monopotassium phosphate and a formate selected from the group consisting of sodium formate and potassium formate, the proportions being 0.5 to 4 parts of the alkali phosphate and 0.25 to 2 parts of the alkali formate.
References Cited UNITED STATES PATENTS 6 OTHER REFERENCES E. F. Schnider, Proceed. Am. Ass. Textile Chem. & C0l., Am. Dyestuif Reporter, May 13, 1963, p. 370, p. 375, p. 376.
NORMAN A. TORCHIN, Primary Examiner Innarone.
SaperS et J. E. CALLAGHAN, Assistant Examiner Casty 821 Ortheil s 14 us. 01. X.R. Gift et a1. 855 s- 55
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4309177A (en) * 1979-12-31 1982-01-05 The Boeing Company Method and solution for the room temperature dyeing of nylon
US5540739A (en) * 1992-02-06 1996-07-30 Ciba-Geigy Corporation Process for dyeing naturally occurring or synthetic polyamide fibres

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3025127A (en) * 1959-05-28 1962-03-13 Du Pont Acid dyeing of polyamides using quaternary ammonium salts
US3086832A (en) * 1958-03-21 1963-04-23 Process for finishing dyeings
US3105732A (en) * 1961-01-10 1963-10-01 Burlington Industries Inc Process for dyeing blends of nylon 6 and nylon 66
US3170757A (en) * 1962-03-09 1965-02-23 Crompton & Knowles Corp Process for producing level dyeings on polyamide fibers
US3399953A (en) * 1967-10-02 1968-09-03 Arkansas Company Inc Dye assistant for polyamides containing alkylene polyamines diamidated with fatty acids, polyethylene glycol fatty acid ester and an alkyl quaternary ammonium compound

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3086832A (en) * 1958-03-21 1963-04-23 Process for finishing dyeings
US3025127A (en) * 1959-05-28 1962-03-13 Du Pont Acid dyeing of polyamides using quaternary ammonium salts
US3105732A (en) * 1961-01-10 1963-10-01 Burlington Industries Inc Process for dyeing blends of nylon 6 and nylon 66
US3170757A (en) * 1962-03-09 1965-02-23 Crompton & Knowles Corp Process for producing level dyeings on polyamide fibers
US3399953A (en) * 1967-10-02 1968-09-03 Arkansas Company Inc Dye assistant for polyamides containing alkylene polyamines diamidated with fatty acids, polyethylene glycol fatty acid ester and an alkyl quaternary ammonium compound

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4309177A (en) * 1979-12-31 1982-01-05 The Boeing Company Method and solution for the room temperature dyeing of nylon
US5540739A (en) * 1992-02-06 1996-07-30 Ciba-Geigy Corporation Process for dyeing naturally occurring or synthetic polyamide fibres

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