Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
  • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
  • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
  • B41M5/382—Contact thermal transfer or sublimation processes
  • B41M5/385—Contact thermal transfer or sublimation processes characterised by the transferable dyes or pigments
  • B41M5/3852—Anthraquinone or naphthoquinone dyes
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
  • C09B1/00—Dyes with anthracene nucleus not condensed with any other ring
  • C09B1/16—Amino-anthraquinones
  • C09B1/20—Preparation from starting materials already containing the anthracene nucleus
  • C09B1/26—Dyes with amino groups substituted by hydrocarbon radicals
  • C09B1/28—Dyes with amino groups substituted by hydrocarbon radicals substituted by alkyl, aralkyl or cyclo alkyl groups
• • 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
  • D06P5/003—Transfer printing
  • D06P5/004—Transfer printing using subliming dyes
  • D06P5/006—Transfer printing using subliming dyes using specified dyes

Definitions

• ABSTRACT A method for transfer printing onto a synthetic fabric is provided utilizing an ink comprising a base medium and at least one dyestuff having the formula:
• X is an unsubstituted alkyl group having from 1 to 6 carbon atoms
• Y and Z are cyanoor hy-- drogen, at least one of Y and Z being cyano.
• X is an alkyl group having from 1 to 6 carbon atoms which may be substituted, or a cycloalkyl group containing 6 carbon atoms, Y or Z is cyano the other being hydrogen or both Y and Z are cyano;
• X is an alkyl group having from 1 to 6 carbon atoms which may be substituted or a cycloalkyl group containing six carbon atoms
• Y is cyano or hydrogen and Z is cyano.
• the transfer backing material containing the printed design is contacted with the synthetic material which is to be dyed and heated at a temperature in the range of from 180 to 230C. for a period of from 10 seconds to 2 minutes, preferably from seconds to 30 seconds, but the precise conditions will depend on the materials employed and the desired results.
• the transfer printing process involves the conversion to the vapour phase by heat of the dyestuff which has been previously printed onto an inert support, followed by penetration and adsorption into the synthetic material to be dyed.
• Suitable alkyl or cycloalkyl groups represented by X in formula (1) above are saturated alkyl groups such as methyl, ethyl, normal or isopropyl, butyl or cyclohexyl.
• compounds of formula (I) are l-amino-2-cyano4-methylaminoanthraquinone, lamino-3-cyano-4-cyclohexylaminoanthraquinone, lamino-Z,3-dicyano-4 methylaminoanthraquinone, lamino-2,3-dicyano-4-ethylaminoanthraquinone and l-amino-2,3-dicyano-4-n-butylaminoanthraquinone.
• the design may be printed on the backing material, normally paper, by any of the usual paper printing processes such as a flexographic, lithographic, gravure, letter press or screen printing process.
• the printing ink is formulated to be. suitable for the desired process, but in general is made up of one or more solvents, a resinous or oily bindingand thickening material, and the desired dyestuff, either in finely divided form or wholly or in part in solution.
• the binding material should not decompose or transfer at the required transfer temperature.
• EXAMPLE 1 20 g of 1-amino-4-butylamino anthraquinone-Z- sodium sulphonate, 25 g of potassium cyanide, 5 g sodium carbonate and 1000 g of water are heated to 90C. until the product has completely precipitated from the original blue solution. The reaction mixture is then filtered, washed with water and dried to give a mixture of l-amino-2,3-dicyano-4- butylaminoanthraquinone mixed with small amounts of the corresponding 2 and 3 mononitriles.
• the ink may be printed by flexographic roller onto a paper base, dried, and the paper contacted with a polyester fabric at 215C. for 20 seconds.
• the resulting clear blue dyeing has good fastness to washing and light.
• Good prints may be obtained on other synthetic fibres and films, such as nylon and acrylic diand triacetate. On the latter fibres, gas fume fastness is also excellent.
• EXAMPLE 2 A mixture of 22 parts of modified phenolic resin, e.g. Alsynol RL 23, and 48 parts of bleached linseed oil is heated to 260C. and thereafter cooled to C. 30 Parts of linseed oil modified alkyd resin, e.g. Alsynol PN 53 are added, the mixture being cooled to 40C. when 15 parts of the dye of example 1 are added and 3 the mixture is milled. After the addition of 6 parts of 6% cobalt naphthenate (6% cobalt), an ink suitable for offset or litho printing on paper is produced. Heat transfer to fabric gives similar results of example 1.
• EXAMPLE 3 A mixture of lO g l-amino-4-bromoanthraquinone- 2-sodium sulphonate, 96 g 60% aqueous ethylamine solution, g sodium carbonate, 0.75 g copper acetate and 1000 ml water is heated in a stainless steel autoclave at 95-l00C. for 3 hours. Excess ethylamine is removed by venting and the solution of l-amino-4- ethylaminoanthraquinone-2-sulpnonic acid is further diluted to 3 litres with water. l44 g sodium cyanide and g sodium carbonate are then added and the mixture is heated to reflux until the product has precipitated.
• the dye is then filtered, washed with hot water and dried, to give a mixture of mainly l-amino-4- ethylamino-2,3-dicyano anthraquinone, together with small amounts of the corresponding 2 and 3 monocyano derivatives.
• This dye may be converted to an ink equally well by the processes used in Examples 1 and 2.
• EXAMPLE 4 A mixture of 20 g of 1-amino-4-cyclohexylamino anthraquinone-Z-sodium sulphonate, 40 g of potassium cyanide and 1000 ml of water are refluxed for 2 hours, filtered, washed and dried. The product is mainly 1- amino-3-cyano-4-cyclohexylaminoanthraquinone.
• Transfer prints on to synthetic fibres were a bright reddish blue of good wash and light fastness.
• the results were qually good when applied from ink coated paper prepared with inks as in the previous examples.
• EXAMPLE 5 20 g of l-amino-4-methylaminoanthraquinone-2- sodium sulphone, 25 g of potassium cyanide, 5 g of sodium carbonate and 1000 ml water are heated at 8595C. for 3 hours. The mixture is filtered, washed with hot water and dried, to give a mixture of cyano derivatives which is mainly l-amino-2-cyano-4- methylaminoanthraquinone.
• a mixture of 20 parts of the above dye, parts of calcium carbonate extender, 12.5 parts of long oil linseed isophthalic acid alkyd resin, 25 parts of medium viscosity linseed oil and 12.5 parts of heavy viscosity linseed oil is passed through a triple roll mill to give an offset litho ink. Papers so printed gave good heat transfer prints on synthetic fibres.
• EXAMPLE 6 A mixture of equal parts of the dyestuffs of Examples 1 and 5 was made into an ink and printed as in Example l. Deeper blue shades on transfer printing were obtained than by the use of either dye singly. We claim:
• a method of transfer printing comprising printing with an ink a desired design onto a transfer backing-material, and thereafter transferring the printed design by the application'of heat from the backing material to a synthetic fabric which is to be dyed or printed, the ink comprising a base medium and at least one dyestuff having the formula I NH X in which: X is unsubstituted alkyl group having from l to 6 carbon atoms; Y is cyano or hydrogen and Z is cyano.
• saturated alkyl group is selected from the group consisting of methyl, ethyl, normal propyl, isopropyl or butyl.

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• Physics & Mathematics (AREA)
• Optics & Photonics (AREA)
• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Coloring (AREA)
• Color Printing (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

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Family Applications (1)

Country Status (4)

Cited By (4)

Citations (2)

• 1972
  • 1972-06-16 GB GB2821972A patent/GB1390864A/en not_active Expired
• 1973
  • 1973-06-14 US US369970A patent/US3893801A/en not_active Expired - Lifetime
  • 1973-06-15 BE BE132297A patent/BE800954A/fr not_active IP Right Cessation
  • 1973-06-15 FR FR7321988A patent/FR2190066A5/fr not_active Expired

Patent Citations (2)

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