US1968819A - Dyeing of textile materials - Google Patents

Dyeing of textile materials Download PDF

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US1968819A
US1968819A US517308A US51730831A US1968819A US 1968819 A US1968819 A US 1968819A US 517308 A US517308 A US 517308A US 51730831 A US51730831 A US 51730831A US 1968819 A US1968819 A US 1968819A
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fabric
cellulose
cellulose acetate
dye liquor
padding
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Dreyfus Camille
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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
    • D06P1/0004—General aspects of dyeing
    • D06P1/0008—Dyeing processes in which the dye is not specific (waste liquors)
    • 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
    • D06P1/64—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 low-molecular-weight organic compounds without sulfate or sulfonate groups
    • D06P1/651—Compounds without nitrogen
    • D06P1/65106—Oxygen-containing compounds
    • 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
    • D06P1/64—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 low-molecular-weight organic compounds without sulfate or sulfonate groups
    • D06P1/651—Compounds without nitrogen
    • D06P1/6515—Hydrocarbons
    • D06P1/65156—Halogen-containing hydrocarbons
    • 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
    • D06P3/34—Material containing ester groups
    • D06P3/40—Cellulose acetate

Definitions

  • This invention relates to the dyeing of textile materials containing cellulose acetate or other organic derivative of cellulose, and relates more particularly to the provision of a method whereby fabrics containing cellulose acetate yarn may be dyed by 2. padding or other inexpensive method.
  • An object of my invention is to dye textile materials comprising cellulose acetate or other organic derivative of cellulose by an economical method involving padding.
  • a further object of my invention is to dye cellulose acetate or other organic derivative of cellulose fabric by padding the fabric in the presence of a suitable material that has at least a softening action on the organic derivative of cellulose with a dyestufi that has little or no affinity for cellulose acetate or other organic derivative of cellulose material when applied in the ordinary manner.
  • the padding method is one of the least expensive methods of dyeing fabrics and therefore its use is highly desirable from the point of view of economy.
  • I dye or color fabrics containing .organic derivatives of cellulose by applying thereto, preferably by a padding method, a dye liquor containing a suitable dyestuti and a volatile organic liquid having a boiling point above 100 C. and that has at least a softening action on the organic derivative of 0 cellulose.
  • the textile material to be treated may be in the form of a fabric containing yarn of organic derivatives of cellulose or cellulose ethers.
  • organic derivatives of cellulose are cellulose acetate, cellulose formate, cellulose propionate and cellulose butyrate, while examples of cellulose ethers are ethyl cellulose, methyl cellulose and berizyl cellulose.
  • the fabric may be a mixed fabric containing yarns of organic derivatives of cellulose and yarns of other fibres such as cotton, reconstituted cellulose, natural silk, wool, etc.
  • the dye liquor that is applied to the fabric contains a volatile organic liquid which has a relatively high boiling point, preferably above 100 C., and which is a solvent for or acts to soften the organic derivative of cellulose.
  • a volatile organic liquid which has a relatively high boiling point, preferably above 100 C.
  • suitable organic liquids may be used examples of which are the acetate of mono ethyl ether or ethylene glycol, diacetone alcohol, benzyl alcohol, tetra- S5 chlorethanaetc.
  • the amount of organic liquid used in the dye liquor will vary with the particular organic liquid employed, in the case of ethyl lactate the amount being from 160 to 400 cc. or more per litre of dye liquor.
  • dyestuff may be employed and they may be basic dyes, certain vat dyes, water insoluble coloring bodies which are ordinarily applied to cellulose acetate in a form dispersed or solubilized by means of soaps, fatty acids, etc. It is a surprising fact that by this invention some direct cotton dyes which have no affinity for cellulose acetate material when applied by other methods may be used. Also certain of the acid dyes which have no aflinity for cellulose acetate material produce excellent dyeings when employed in this invention. The amount of dyestufi present in the dye liquor will vary in accordance with the particular dyestuif employed and the 0 depth of color desired, the amount required being less than in ordinary dye methods and being as low as 0.5 to 3% of the dyebath.
  • the dye liquor may be applied to the fabric by any suitable padding mangle.
  • the fabric til may be passed between two rolls, the lower one of which dips in the dye liquor.
  • the fabric may be passed continuously through the dye liquor and then between rolls. The nip of the rolls is regulated so that the required amount of dye liquor is retained by the fabric to obtain the desired depth of color.
  • a small amount of thickening agent such as gum arabic, gum tragacanth or Colloresin (water soluble methyl cellulose) may be added to the dye liquor, and the material applied to the fabric by means of pin rolls or all-over rolls.
  • the fabric After application of the dye liquor, the fabric may be batched and then dried or it may be directly given a simple drying at temperatures below 100 C., say 60 to C. by passing the fabric through chambers containing heated air, or over heated drums or cans. To obtain maximum fastness to soaping and for most successful results, it is important that the ethyl lactate or other volatile organic liquid employed should be completely removed by the drying process. The fabric may then be rinsed or given any other suitable after treatment.
  • Example A fabric consisting of cellulose acetate yarn is padded with a dye liquor of the following composition:
  • the dyestuif used may be any one or more of the following: milling green (color index No. 667); chloramine black J (Sandoz) (color index No. 581); acridine red (color index No. 740); chromazurine H. B. (color index No. 879) palatin orange: palatin black (color index No. 241); benzyl violet (color index No. 683) cyanol blue; milling orange (color index No. 274); metanile yellow (color index No. 138); chomacetine blue S. (color index No. 884); acid blue N. V. S.; acridine orange (color index No. 788); astra violet; alkali blue (color index No.
  • the nip of the roll is arranged so that an amount of dye liquor to obtain the desired depth of color is taken up by the fabric.
  • the fabric is then dried at 70 to 80 C. for sufficient time to cause complete vaporization of the ethyl lactate.
  • the fabric is then rinsed and then may be scoured or given any other desired treatment.
  • the colorations obtained are quite brilliant and are of great depth for the amount of dyestuff employed. Moreover the color is surprisingly fast to soaping.
  • Method of coloring textile materials containing organic derivatives of cellulose comprising applying to the whole surface thereof, by mechanical impregnation, a dye liquor containing a volatile liquid that has at least a softening action on the organic derivative of cellulose and a dyestuff that has relatively little or no aflinity for the organic derivative of cellulose when applied in simple dyebaths, and then drying.
  • Methodpf coloring textile materials containing cellulose acetate comprising applying to the whole surface thereof, by mechanical impregnation, a dye liquor containing a. volatile liquid that has at least a softening action on the cellulose acetate and a dyestuif that has relatively little or no aflinity for the cellulose acetate when applied in simple dyebaths, and then drying.
  • Method of coloring textile materials containing organic derivatives of cellulose comprising applying to the whole surface thereof, by mechanical impregnation, a dye liquor containing a volatile liquid of a boiling point above C. that has at least a softening action on the organic derivative of cellulose and a dyestuff that has relatively little or no affinity for the organic derivative of cellulose when applied in simple dyebaths, and then drying.
  • Method of coloring textile materials contain-: ing cellulose acetate comprising applying to the whole surface thereof, by mechanical impregnation, a dye liquor containing a volatile liquid of a boiling point above 100 C. that has at least a softening action on the cellulose acetate and a dyestuff that has relatively little or no aflinity for the cellulose acetate when applied in simple dyebaths, and then drying.
  • Method of coloring textile materials containing cellulose acetate comprising applying to the whole surface thereof, by mechanical impregnation, a dye liquor containing ethyl lactate and a dyestuff that has relatively little or no aflinity for the cellulose acetate when applied in simple dyebaths and then drying.
  • Method of coloring fabric containing organic derivative of cellulose yarn comprising padding the fabric with a dye liquor containing a suitable dyestuff and a volatile liquid having a boiling point above 100 C. that has at least a softening action on the organic derivative of cellulose and then drying the fabric.
  • Method of coloring fabric containing cellulose acetate yarn comprising padding the fabric with a dye liquor containing a suitable dyestufl' and a volatile liquid having a boiling point above 100 C. that has at least a softening action on the cellulose acetate and then drying the fabric.
  • Method of coloring fabric containing cellulose acetate yam comprising padding the fabric with a dye liquor containing a suitable dyestuff and a volatile liquid having a boiling point above 100 C. that has at least a softening action on the cellulose acetate and then drying the fabric at a temperature below 100 C.
  • Method of coloring fabric containing organic derivative of cellulose yarn comprising padding the fabric with a dye liquor containing a suitable dyestufl which has little or substantially no aflinity for the organic derivative of cellulose when applied in simple dyebaths and a large amount of a volatile liquid having a boiling point above C. that has at least a softening action on the organic derivative of cellulose, and then drying the fabric.
  • Method of coloring fabric containing cellulose acetate yarn comprising padding the fabric with a dye liquor containing a suitable dyestufi which has little or substantially no aillnity for the cellulose acetate when applied in simple dyebaths and a large amount of a volatile liquid having a boiling point above 100 C. that has at least a softening action on the cellulose acetate, and. then dryt' lg the fabric.
  • Method of coloring fabric containing cellulose acetate yam comprising padding the fabric with a dy liquor containing ethyl lactate and a suitable dyestulf and then drying the fabric.
  • Method of coloring fabric containing cellulose acetate yarn comprising padding the fabric with a dye liquor containing ethyl lactate and a suitable dyestufl that has substantially no affinity for the cellulose acetate when applied in simple dyebaths and then drying the fabric.
  • Method of coloring fabric containing cellulose acetate yarn comprising padding the fabric with a dye liquor containing ethyl lactate and a suitable dyestuif that has substantially no aftlnity for the cellulose acetate when applied in simple dyebaths and then drying the fabric at a temperature below 100 C.
  • Patent No. 1,968, 819
  • Method of coloring fabric containing cellulose acetate yarn comprising padding the fabric with a dye liquor containing a suitable dyestufi which has little or substantially no aillnity for the cellulose acetate when applied in simple dyebaths and a large amount of a volatile liquid having a boiling point above 100 C. that has at least a softening action on the cellulose acetate, and. then dryt' lg the fabric.
  • Method of coloring fabric containing cellulose acetate yam comprising padding the fabric with a dy liquor containing ethyl lactate and a suitable dyestulf and then drying the fabric.
  • Method of coloring fabric containing cellulose acetate yarn comprising padding the fabric with a dye liquor containing ethyl lactate and a suitable dyestufl that has substantially no affinity for the cellulose acetate when applied in simple dyebaths and then drying the fabric.
  • Method of coloring fabric containing cellulose acetate yarn comprising padding the fabric with a dye liquor containing ethyl lactate and a suitable dyestuif that has substantially no aftlnity for the cellulose acetate when applied in simple dyebaths and then drying the fabric at a temperature below 100 C.
  • Patent No. 1,968, 819

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

Description

i atentecl Aug. 7, 1934 PATENT; OFFICE DYEING F TEXTILE MATERIALS Camille Dreyfus, New York, N. Y.
No Drawing. Application February 20, 1931,
Serial'No. 517,308
13 Claims.
This invention relates to the dyeing of textile materials containing cellulose acetate or other organic derivative of cellulose, and relates more particularly to the provision of a method whereby fabrics containing cellulose acetate yarn may be dyed by 2. padding or other inexpensive method.
An object of my invention is to dye textile materials comprising cellulose acetate or other organic derivative of cellulose by an economical method involving padding. A further object of my invention is to dye cellulose acetate or other organic derivative of cellulose fabric by padding the fabric in the presence of a suitable material that has at least a softening action on the organic derivative of cellulose with a dyestufi that has little or no affinity for cellulose acetate or other organic derivative of cellulose material when applied in the ordinary manner. Other objects of this invention Will-appear from the following detailed description.
The padding method is one of the least expensive methods of dyeing fabrics and therefore its use is highly desirable from the point of view of economy. However heretofore it has not been possible to obtain satisfactory colorations on fabrics containing cellulose acetate material by a padding method, due to the fact, among other reasons, that the cellulose acetate material is not sufliciently absorbent to take up enough of the ordinary dye liquor to obtain the required depth and brilliancy of color.
I have found that if there is present in the dye bath a relatively large amount of volatile organic liquid of relatively high boiling point which has at least a softening action on the organic derivative of cellulose such dyebath may be applied to fabric containing organic derivative of cellulose yarn by a padding or analogous method, and after suitable fixation of the dyestufi, very satisfactory colorations are obtained. Moreover, by this process, many dyestuffs that have little or no affinity for the organic derivative of cellulose when applied by ordinary dyeing methods may be employed to obtain 5 brilliant colors which are quite fast to soaping,
rubbing, etc. This method presents many economies which are due not only to the low cost of manipulation involved in a padding method as compared with dyeing in jigs, winches, dye barks or the like, but also to the fact that dyestuffs of low cost may be used and the amount of dyestufl necessary to produce a given depth of color is considerably reduced.
In accordance with my invention, I dye or color fabrics containing .organic derivatives of cellulose by applying thereto, preferably by a padding method, a dye liquor containing a suitable dyestuti and a volatile organic liquid having a boiling point above 100 C. and that has at least a softening action on the organic derivative of 0 cellulose.
The textile material to be treated may be in the form of a fabric containing yarn of organic derivatives of cellulose or cellulose ethers. Examples of such organic derivatives of cellulose are cellulose acetate, cellulose formate, cellulose propionate and cellulose butyrate, while examples of cellulose ethers are ethyl cellulose, methyl cellulose and berizyl cellulose. The fabric may be a mixed fabric containing yarns of organic derivatives of cellulose and yarns of other fibres such as cotton, reconstituted cellulose, natural silk, wool, etc. Some of the dyestufls that may be used have no aflinity for the said other materials, and thus differential color effects may be obtained.
As stated, the dye liquor that is applied to the fabric contains a volatile organic liquid which has a relatively high boiling point, preferably above 100 C., and which is a solvent for or acts to soften the organic derivative of cellulose. While I prefer to employ ethyl lactate, other suitable organic liquids may be used examples of which are the acetate of mono ethyl ether or ethylene glycol, diacetone alcohol, benzyl alcohol, tetra- S5 chlorethanaetc. I prefer to employ organic liquids that are miscible with water. The amount of organic liquid used in the dye liquor will vary with the particular organic liquid employed, in the case of ethyl lactate the amount being from 160 to 400 cc. or more per litre of dye liquor.
Various kinds of dyestuff may be employed and they may be basic dyes, certain vat dyes, water insoluble coloring bodies which are ordinarily applied to cellulose acetate in a form dispersed or solubilized by means of soaps, fatty acids, etc. It is a surprising fact that by this invention some direct cotton dyes which have no affinity for cellulose acetate material when applied by other methods may be used. Also certain of the acid dyes which have no aflinity for cellulose acetate material produce excellent dyeings when employed in this invention. The amount of dyestufi present in the dye liquor will vary in accordance with the particular dyestuif employed and the 0 depth of color desired, the amount required being less than in ordinary dye methods and being as low as 0.5 to 3% of the dyebath.
The dye liquor may be applied to the fabric by any suitable padding mangle. Thus the fabric til may be passed between two rolls, the lower one of which dips in the dye liquor. If desired the fabric may be passed continuously through the dye liquor and then between rolls. The nip of the rolls is regulated so that the required amount of dye liquor is retained by the fabric to obtain the desired depth of color. If desired a small amount of thickening agent such as gum arabic, gum tragacanth or Colloresin (water soluble methyl cellulose) may be added to the dye liquor, and the material applied to the fabric by means of pin rolls or all-over rolls.
After application of the dye liquor, the fabric may be batched and then dried or it may be directly given a simple drying at temperatures below 100 C., say 60 to C. by passing the fabric through chambers containing heated air, or over heated drums or cans. To obtain maximum fastness to soaping and for most successful results, it is important that the ethyl lactate or other volatile organic liquid employed should be completely removed by the drying process. The fabric may then be rinsed or given any other suitable after treatment.
In order further to illustrate my invention, the following specific example is given.
Example A fabric consisting of cellulose acetate yarn is padded with a dye liquor of the following composition:
The dyestuif used may be any one or more of the following: milling green (color index No. 667); chloramine black J (Sandoz) (color index No. 581); acridine red (color index No. 740); chromazurine H. B. (color index No. 879) palatin orange: palatin black (color index No. 241); benzyl violet (color index No. 683) cyanol blue; milling orange (color index No. 274); metanile yellow (color index No. 138); chomacetine blue S. (color index No. 884); acid blue N. V. S.; acridine orange (color index No. 788); astra violet; alkali blue (color index No. 704); rhoduline blue (color index No. 658); orange II (color index No. 151); neolane orange; chrysophenine (color index No. 365); rhoduline yellow 6 G. (color index No. 815); milling red (color index No. 344); induline (color index No. 861); acridine red P. S. (color index No. 740) induline brown; polar red (color index No. 430); benzyl green (color index No. 667); wool blue acid N; formyl violet 5 B. (color index No. 698) and rhodamine 3 G. 0. (color index No. 749).
The nip of the roll is arranged so that an amount of dye liquor to obtain the desired depth of color is taken up by the fabric. The fabric is then dried at 70 to 80 C. for sufficient time to cause complete vaporization of the ethyl lactate. The fabric is then rinsed and then may be scoured or given any other desired treatment.
The colorations obtained are quite brilliant and are of great depth for the amount of dyestuff employed. Moreover the color is surprisingly fast to soaping.
The term mechanical impregnation as used hereinafter in the claims connotes any method of applying a reagent in which, as opposed to a bath treatment process, the whole quantity of reagent is applied to the goods in such an amount to secure by Letters Patent is:
1. Method of coloring textile materials containing organic derivatives of cellulose comprising applying to the whole surface thereof, by mechanical impregnation, a dye liquor containing a volatile liquid that has at least a softening action on the organic derivative of cellulose and a dyestuff that has relatively little or no aflinity for the organic derivative of cellulose when applied in simple dyebaths, and then drying.
2. Methodpf coloring textile materials containing cellulose acetate comprising applying to the whole surface thereof, by mechanical impregnation, a dye liquor containing a. volatile liquid that has at least a softening action on the cellulose acetate and a dyestuif that has relatively little or no aflinity for the cellulose acetate when applied in simple dyebaths, and then drying.
3. Method of coloring textile materials containing organic derivatives of cellulose comprising applying to the whole surface thereof, by mechanical impregnation, a dye liquor containing a volatile liquid of a boiling point above C. that has at least a softening action on the organic derivative of cellulose and a dyestuff that has relatively little or no affinity for the organic derivative of cellulose when applied in simple dyebaths, and then drying.
4. Method of coloring textile materials contain-: ing cellulose acetate comprising applying to the whole surface thereof, by mechanical impregnation, a dye liquor containing a volatile liquid of a boiling point above 100 C. that has at least a softening action on the cellulose acetate and a dyestuff that has relatively little or no aflinity for the cellulose acetate when applied in simple dyebaths, and then drying.
5. Method of coloring textile materials containing cellulose acetate comprising applying to the whole surface thereof, by mechanical impregnation, a dye liquor containing ethyl lactate and a dyestuff that has relatively little or no aflinity for the cellulose acetate when applied in simple dyebaths and then drying.
6. Method of coloring fabric containing organic derivative of cellulose yarn comprising padding the fabric with a dye liquor containing a suitable dyestuff and a volatile liquid having a boiling point above 100 C. that has at least a softening action on the organic derivative of cellulose and then drying the fabric.
7. Method of coloring fabric containing cellulose acetate yarn comprising padding the fabric with a dye liquor containing a suitable dyestufl' and a volatile liquid having a boiling point above 100 C. that has at least a softening action on the cellulose acetate and then drying the fabric.
8. Method of coloring fabric containing cellulose acetate yam comprising padding the fabric with a dye liquor containing a suitable dyestuff and a volatile liquid having a boiling point above 100 C. that has at least a softening action on the cellulose acetate and then drying the fabric at a temperature below 100 C. V
9. Method of coloring fabric containing organic derivative of cellulose yarn comprising padding the fabric with a dye liquor containing a suitable dyestufl which has little or substantially no aflinity for the organic derivative of cellulose when applied in simple dyebaths and a large amount of a volatile liquid having a boiling point above C. that has at least a softening action on the organic derivative of cellulose, and then drying the fabric.
10. Method of coloring fabric containing cellulose acetate yarn comprising padding the fabric with a dye liquor containing a suitable dyestufi which has little or substantially no aillnity for the cellulose acetate when applied in simple dyebaths and a large amount of a volatile liquid having a boiling point above 100 C. that has at least a softening action on the cellulose acetate, and. then dryt' lg the fabric.
11. Method of coloring fabric containing cellulose acetate yam comprising padding the fabric with a dy liquor containing ethyl lactate and a suitable dyestulf and then drying the fabric.
12. Method of coloring fabric containing cellulose acetate yarn comprising padding the fabric with a dye liquor containing ethyl lactate and a suitable dyestufl that has substantially no affinity for the cellulose acetate when applied in simple dyebaths and then drying the fabric.
13. Method of coloring fabric containing cellulose acetate yarn comprising padding the fabric with a dye liquor containing ethyl lactate and a suitable dyestuif that has substantially no aftlnity for the cellulose acetate when applied in simple dyebaths and then drying the fabric at a temperature below 100 C.
CAMILLE Darn 5.
CERTIFICATE OF CORRECTION.
Patent No. 1,968, 819.
August 7, 1934.
CAMILLE DREYFUS.
It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 1, line 84, for "or" read of; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.
(Sea l Leslie Frazer Acting Commissioner of Patents.
aflinity for the organic derivative of cellulose when applied in simple dyebaths and a large amount of a volatile liquid having a boiling point above C. that has at least a softening action on the organic derivative of cellulose, and then drying the fabric.
10. Method of coloring fabric containing cellulose acetate yarn comprising padding the fabric with a dye liquor containing a suitable dyestufi which has little or substantially no aillnity for the cellulose acetate when applied in simple dyebaths and a large amount of a volatile liquid having a boiling point above 100 C. that has at least a softening action on the cellulose acetate, and. then dryt' lg the fabric.
11. Method of coloring fabric containing cellulose acetate yam comprising padding the fabric with a dy liquor containing ethyl lactate and a suitable dyestulf and then drying the fabric.
12. Method of coloring fabric containing cellulose acetate yarn comprising padding the fabric with a dye liquor containing ethyl lactate and a suitable dyestufl that has substantially no affinity for the cellulose acetate when applied in simple dyebaths and then drying the fabric.
13. Method of coloring fabric containing cellulose acetate yarn comprising padding the fabric with a dye liquor containing ethyl lactate and a suitable dyestuif that has substantially no aftlnity for the cellulose acetate when applied in simple dyebaths and then drying the fabric at a temperature below 100 C.
CAMILLE Darn 5.
CERTIFICATE OF CORRECTION.
Patent No. 1,968, 819.
August 7, 1934.
CAMILLE DREYFUS.
It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 1, line 84, for "or" read of; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.
(Sea l Leslie Frazer Acting Commissioner of Patents.
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428836A (en) * 1947-10-14 Printing of cellulose acetate
US2428834A (en) * 1943-05-15 1947-10-14 Celanese Corp Dyeing of cellulose acetate fabrics with direct dyeing dyestuffs, lower aliphatic alcohols and lower aliphatic acids
US2514410A (en) * 1945-05-08 1950-07-11 Celanese Corp Printing of cellulose acetate using methyl cellulose as a thickener for strongly alcoholic dye solutions
US2524072A (en) * 1947-07-28 1950-10-03 Celanese Corp Dyeing organic derivative of cellulose textile material with an aqueous solution comprising a leuco vat dye, a water-miscible organic base, and diacetone alcohol
US2524093A (en) * 1948-04-20 1950-10-03 Celanese Corp Union dyeing of mixed fabrics of cellulose ester and animal fibers with alkaline reduced vat dye solutions containing swelling agents
US2524811A (en) * 1946-09-20 1950-10-10 Interchem Corp Dyeing plastic articles with an aqueous dispersion of dye dissolved in a plasticizer
US2606809A (en) * 1942-02-13 1952-08-12 Joseph L Switzer Daylight-fluorescent textiles
US2615781A (en) * 1952-10-28 Xx x x x
US2620257A (en) * 1948-12-15 1952-12-02 Celanese Corp Vat dye pigment pad process for cellulose ester textiles using a water-miscible organic swelling agent in the alkaline hydrosulfite reducing bath

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428836A (en) * 1947-10-14 Printing of cellulose acetate
US2615781A (en) * 1952-10-28 Xx x x x
US2606809A (en) * 1942-02-13 1952-08-12 Joseph L Switzer Daylight-fluorescent textiles
US2428834A (en) * 1943-05-15 1947-10-14 Celanese Corp Dyeing of cellulose acetate fabrics with direct dyeing dyestuffs, lower aliphatic alcohols and lower aliphatic acids
US2514410A (en) * 1945-05-08 1950-07-11 Celanese Corp Printing of cellulose acetate using methyl cellulose as a thickener for strongly alcoholic dye solutions
US2524811A (en) * 1946-09-20 1950-10-10 Interchem Corp Dyeing plastic articles with an aqueous dispersion of dye dissolved in a plasticizer
US2524072A (en) * 1947-07-28 1950-10-03 Celanese Corp Dyeing organic derivative of cellulose textile material with an aqueous solution comprising a leuco vat dye, a water-miscible organic base, and diacetone alcohol
US2524093A (en) * 1948-04-20 1950-10-03 Celanese Corp Union dyeing of mixed fabrics of cellulose ester and animal fibers with alkaline reduced vat dye solutions containing swelling agents
US2620257A (en) * 1948-12-15 1952-12-02 Celanese Corp Vat dye pigment pad process for cellulose ester textiles using a water-miscible organic swelling agent in the alkaline hydrosulfite reducing bath

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