Classifications

• • 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
  • D06P5/005—Transfer printing using subliming dyes on resin-treated fibres
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
  • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
  • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • D06M15/227—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated
  • D06M15/233—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated aromatic, e.g. styrene

Definitions

• the present invention relates to transfer printing of cellulosic fibers and mixtures of such fibers with synthetic fibers. It is known that these materials cannot be printed by the known method of dry transfer printing. In fact, the dyes used in this technique only deposit on the cellulosic fibers, giving insufficient intensities and above all shades which are totally devoid of solidity in washing and in light.
• the present invention overcomes this drawback of the gas phase transfer technique. It provides the means to carry out transfer printing on cellulosic materials or containing cellulose fibers so as to obtain articles printed in bright shades, solid in washing.
• This product consists of an aqueous suspension mixture of 1 to 3 parts of a softener 2 to 5 "" of a cyclic methylol derivative of urea 5 to 15 "" of polystyrene and. 0.2 to 0.5 part of a methylol derivative curing catalyst; a heat stable optical brightening agent can be added to this mixture if necessary.
• the aqueous suspension which is the subject of the present invention is an emulsion or a dispersion of the polystyrene and of the softener, when the latter is not soluble in water, in a solution of the other constituents of the mixture which must therefore contain one (or more) emulsifier or dispersant which ensures the stability of the aqueous suspension: Textiles treated with such a suspension either with a scarf or by spraying (spray) have a significant improvement in their properties, in particular their susceptibility to dyeing and especially printing with heat transferable dyes
• mixture which is the subject of the present invention significantly reduces the curing which occurs when the transfer or after transfer, the textiles are treated with precondensates of thermosetting resins ble s. It also has the advantage of making it possible to print, by dry transfer in the gas phase, cellulose fibers in shades which are sufficiently solid in the wash, sufficiently shiny and of an excellent feel.
• softeners used aqueous dispersions can be mentioned polyethylene, such as BASF EPOTAL especially EPOTAL 181D, emulsions sili - cones or self-crosslinking polysiloxane, such as the product known under the name WS PHOBOTON from Ciba-Geigy or AVIVAN SO or the DICRYLAN WK from the same company.
• Emulsions' watery these products generally contain emulsifying nonionic nanta that ensure the stability of emulsions uti the i-SES.
• the amount of fabric softener to use depends on the amount of polystyrene present in the mixture. It can vary between fairly wide limits but should remain between a third and a fifth of the total amount of polystyrene emulsion.
• the cyclic methylol derivatives of urea to be used according to the invention are precondensates of the formaldehyde with melamine or better with diethylene-urea.
• methylol groups which in turn can be etherified or not. Excellent results were obtained with ethylene-urea dimethylol, ethylene-urea dihydroxy-dimethylol, partially or fully methylated di-, tetra- and hexamethylol-melamines.
• methyl derivatives constitute an essential element of the mixture according to the invention, which must however remain in proportions not exceeding 40% of the polystyrene also present in the mixture.
• methylol-ethylene urea methylol - melamines (or methoxymethyl-melamines which are in fact methylol-melamines etherified with methyl alcohol)
• the mixture must contain a curing catalyst, for example chloride or zinc nitrate, quaternary ammonium chlorides, ammonium acid phosphate etc.
• a curing catalyst for example chloride or zinc nitrate, quaternary ammonium chlorides, ammonium acid phosphate etc.
• the key element of the mixture according to the present invention is polystyrene. It must always be present at least 50%.
• STYROFAN aqueous polystyrene emulsion which can be used, mention may be made of STYROFAN from the company BASF.
• a wetting agent may be incorporated therein in very small amounts. It can be an agent of the anionic, cationic or preferably nonionic type.
• a concentrated mixture which is diluted before use or add the various elements of the mixture to the quantity of water desired to ensure adequate dilution.
• the various elements of the mixture can be added to each other in the form of suspensions or solutions in water.
• catalysts such as metal or amine salts (amine or metal chloride such as magnesium, ammonium acid phosphate, zinc chloride or nitrate).
• the indicated amounts of the various constituents of the mixture of the present invention may vary depending on the textiles to be treated.
• to treat cotton will be used together - diapers containing, per liter of water, to loo 12og polystyrene, while for polyester-cotton 50:50, polystyrene 30 to 50g per liter of water are sufficient.
• Polystyrene and fabric softeners are generally used in the form of aqueous emulsions containing 40 to 60% of substance, while the precondensates are generally presented in the form of syrups or aqueous solutions which contain 50 to 80% of dry matter.
• the constituents of the mixture are chosen in such a way that their emulsions and / or solutions remain compatible with each other, that is to say that they do not form precipitates or distinct phases.
• the simultaneous use of cationic and anionic emulsions should be avoided, while nonionic emulsions are usually compatible with each other and with those of the ionic type.
• the mixture of the present invention is applied to the fabrics to be thermo-printed by soaking or not spraying (spray) with a scarf or in a sprayer, It is therefore possible either to immerse the material to be treated in a treatment bath and to express the quantity of excess bath by pressure between rollers, or spray the mixture on the face of the fabric which will then be printed by dry transfer.
• the textile material whether cotton or a mixture of cotton and polyester, is suitable for transfer. It is not necessary, as in known methods, to subject it to a curing operation for methylol derivatives.
• the crosslinking of the precondensates used takes place during the transfer, which is usually carried out in 25 to 45 seconds at 200-220 ° C. There is no requirement at all to carry out the immediate transfer. ment after the treatment, the textile material treated with the mixture of the present invention remaining heat-printable by dry transfer several months, even years, after having undergone the treatment.
• the mixture according to the invention makes it possible to make the cellulosic fibers dry printable with the sublimable dyes which are generally of the type known as "dispersion dyes"
• certain dispersion dyes give particularly favorable results on the cellulosic fibers treated according to the invention interesting; these are BAFIXAN RL yellow from BASF, red 901 and yellow 809 from Eastman Kodak, RESOLIN FB red from Bayer, HOSTATERM 3GL and H3: GL yellows from Hochst, BAFIXAN R and 2RL blues from BASF, TERAPRIPT blues 2R and 5R from CIBA-GEIGY, the red TERAPRINT 6B from CIBA-GEIGY.
• the treatment with the mixture according to the invention is done after dilution by spraying on one side of the fabric or knitted fabric and drying in air or in an oven. You can also perform the treatment by padding.
• 660 parts of a 40% polystyrene emulsion (STYROFAN 2D from BASF) are mixed with stirring with 100 parts of a polysiloxane (PHOBOTON WS from Ciba-Geigy) and 200 parts of an aqueous solution of dihydroxy-dimethylol-urea (KNITTEX LE from Ciba-Geigy). 20 parts of hydroxy propylamine chloride are added as catalyst as well as 0.7 part of PHOBOTON K catalyst from Ciba-Geigy.
• STYROFAN 2D 40% polystyrene emulsion
• PHOBOTON WS polysiloxane
• KNITTEX LE dihydroxy-dimethylol-urea
• 20 parts of hydroxy propylamine chloride are added as catalyst as well as 0.7 part of PHOBOTON K catalyst from Ciba-Geigy.
• the concentrated intimate mixture thus obtained to be applied by spraying is diluted with 3 to 6, preferably 4.5 parts of water.
• Example 1 The procedure is as in Example 1 using 50 parts of STYROFAN 2D, 7.5 parts of PHOBOTON WS, 15 parts of KNITTEX LE and 1.5 parts of the Aerotex DC accelerator from American Cyanamid. 0.05 part of a heat stable optical brightening agent (UVITEX EFT from Ciba-Geigy), 1.0 part of diethylene glycol and 25 parts of water are added to the mixture obtained.
• a heat stable optical brightening agent UVITEX EFT from Ciba-Geigy
• cotton and polyester-cotton can be treated by padding (expression rate 80 to 90%) and, after drying, a fabric which can -be printed by dry transfer in solid and lively shade, whose whites have an improved brightness compared to those obtained with a similar mixture but not containing UVITEX.
• Example 2 The procedure is as in Example 1, replacing the PHOBOTON WS with the same quantity of EPOTAL 181D from BASF. A mixture is also obtained which is applicable to cellulosic fibers to which it imparts dry printability qualities which they did not have before the treatment.
• Example 2 The procedure is as in Example 1, but replacing the PHOBOTON WS from Ciba-Geigy with the AVIVAN SO from the same company, the KNITTEX LE with 150 parts of SUBLIFIX TPC from Ciba-Geigy and the catalyst chloride with zinc nitrate or ammonium acid phosphate. This also gives a mixture applicable after dilution to cotton fibers to which it gives properties which make them printable by dry transfer of dispersion dyes.
• DICRYLAN can be replaced by a mixture of 24 parts of DICRYLAN and 6 parts of PHOBOTON WS.

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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Coloring (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=4250540

Family Applications (1)

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Cited By (2)

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Citations (6)

• 1981
  • 1981-04-08 EP EP81102632A patent/EP0038965A1/de not_active Withdrawn
  • 1981-04-11 JP JP5493881A patent/JPS56159377A/ja active Pending
  • 1981-04-13 AU AU69466/81A patent/AU6946681A/en not_active Abandoned
  • 1981-04-17 IL IL62678A patent/IL62678A0/xx unknown
  • 1981-04-24 PT PT72909A patent/PT72909B/pt unknown
  • 1981-04-24 ES ES501615A patent/ES8306817A1/es not_active Expired

Patent Citations (6)

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