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
  • 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
  • D06P3/52—Polyesters
  • D06P3/54—Polyesters using dispersed dyestuffs
• • 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
• • 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
  • D06P3/26—Polyamides; Polyurethanes using dispersed dyestuffs

Definitions

• the invention relates to a process for dyeing synthetic, hydrophobic fiber materials with organophilic dyes free of sulfonic acid groups by the extraction method.
• the colorings often leave something to be desired in terms of rub fastness and levelness.
• Example 18b of DE-OS 2 247 568 alone a Soxhleta apparatus is described in which the colorant is deposited in a glass fiber sleeve which is de facto flowed through by the cold water condensed on the reflux condenser of the apparatus.
• the extraction process known per se can be carried out in a simple manner, i.e. can be used for dyeing hydrophobic fibers without the use of special preparations and while observing economically interesting dyeing times, if the depot is charged with a dye with a minimum solubility in water of 20 mg / l at 130 ° C and is flowed through by an aqueous dye liquor at dyeing temperature, which is free of emulsifiers and dispersants.
• the flow through the fleet can take place directly or indirectly in a so-called by-pass.
• Suitable dyes for carrying out the process are described in detail and comprehensively in the patent literature or - in the case of commercial products - are listed in the Color Index. They can belong to a wide variety of chromophoric systems. Examples include dyes from the azo, anthraquinone, quinophthalone, perinone and methine series, and organophilic optical brighteners.
• Suitable dyes are, in particular, those which are more than 50 mg / l, in particular 100 mg / l, soluble in the aqueous liquor at 130 ° C.
• solubility in water is determined by methods known per se, for example by taking a measured amount of dye solution at 130 ° C. from a suitable apparatus, as described, for example, in Melliand Textile Reports 11, (1969), page 1342, using a sample with Water-miscible polar, organic solvents (eg dimethylformamide) are diluted and the dye content therein is determined photometrically.
• R hydrophilizing substituent group R
• alkyl and alkoxy radicals mentioned above in any context preferably have 1 to 4 carbon atoms and can be substituted by substituents customary in dye or auxiliary chemistry (for example OH, CN, Cl, N0 2 , F, Br, alkoxycarbonyl or alkoxy), with the exception of ionic radicals (except COOH) for the dye radicals.
• substituents customary in dye or auxiliary chemistry for example OH, CN, Cl, N0 2 , F, Br, alkoxycarbonyl or alkoxy
• Suitable aryl or aryloxy radicals are naphthalene and especially benzene radicals, which may be substituted by, for example, alkyl, alkoxy, Cl, F, Br, N0 2 , alkoxycarbonyl, CF 3 , CN or COOH. are.
• Suitable hetaryl radicals are pyridyl, thienyl, furyl, quinolinyl, thiazolyl, thiadiazolyl and pyrazolyl.
• Suitable alkylene radicals preferably have 2-10 carbon atoms in the chain, which can optionally be substituted by alkyl, aryl, aralkyl or COOH. -C 2 H 4 - is preferred.
• Suitable arylene residues are naphthylene - and especially phenyl residues, which e.g. by alkyl or aryl subst. could be.
• Suitable bridge members are 0, S, CO, alkylene, phenylene and others.
• Suitable derivatives of the carboxyl group are nitriles, carboxamides, alkyl esters, acid anhydrides and imides.
• Very particularly preferred polyether dyes are those of the formula IX, in which at least one of the radicals R 1 -R 7 represents the radical - (C 2 H 4 O) m X, which is present directly or via a bridge, for example 0 or CO to which the azobenzene molecule is bound and m is 2-5.
• the dyes are used in the form of powder or granules or - according to a preferred process variant - as tablets. If appropriate, these formation forms can contain customary auxiliaries such as dispersants, mold release agents, blending agents, etc. An intensive grinding process, however, is not necessary when producing these preparations.
• the dyeings can be carried out at the boiling point of the aqueous dye liquor or - preferably - in closed dyeing systems at temperatures of approx. 130 ° C.
• the fiber material is dyed in a weakly acidic to weakly alkaline bath, advantageously at a pH of 3.5-6; the liquor ratio can vary between 1: 3 - 1:40, preferably in the range 1: 8 to 1:20.
• auxiliary agents with a known effect can be added to the dye liquor - for example phenol derivatives such as o-phenylphenol, methyl salicylic acid, chlorinated aromatic hydrocarbons such as o-dichlorobenzene or methylnaphthalenes or 2,2'-dinaphthylsulfonic acid sodium.
• phenol derivatives such as o-phenylphenol, methyl salicylic acid, chlorinated aromatic hydrocarbons such as o-dichlorobenzene or methylnaphthalenes or 2,2'-dinaphthylsulfonic acid sodium.
• the amounts of auxiliary agents that are added vary between 0.1 g / 1 and 4 g / l.
• aqueous moths which apart from the indicated auxiliaries can only contain the substances necessary for pH regulation, are generally free of organic solvents.
• structures made of polyesters, cellulose acetates or polyamides are suitable as textile materials, these fibers being able to be used in a mixture with one another or together with natural fibers such as wool or cotton.
• the present process for dyeing the synthetic fibers can be combined with dyeing operations for dyeing the native fiber components.
• dye mixtures are also used for dyeing a type of fiber according to the dyeing process claimed.
• 500 parts of polyester yarn are dyed in the form of a bobbin in a bobbin dyeing machine with a dye depot; for this purpose, the depot with 9 parts of a coarsely comminuted, unformed dye of the formula charged, the system filled with water without any further additives and the aqueous liquor heated to 130 ° C quickly.
• the circulation through the wound body is performed in the change of 3 min. And 5 M in. From the inside out and vice versa.
• the water flow can be directed through the depot immediately, ie at the beginning of the heating phase or only after reaching 100 or 130 ° C. After a dyeing time of 45 minutes at 130 ° C, the dye is completely detached from the depot and applied to the polyester cheese.
• the dyebath is drained after cooling to approx.
• polyester piece goods 200 parts are wound onto a material carrier and inserted into the cross-winder dyeing machine described above.
• the depot is filled with 1.1 parts of a tabletted dye, consisting of 95% of the dye of the formula and 5% binder or release agent (produced on a rotary machine or eccentric tablet press with a pressure of 900-1000 atmospheres) and the system is filled with water.
• the liquor is brought to 130 ° C. as quickly as possible and dyed at this temperature for 50 minutes. After cooling and draining the liquor and rinsing, a red-violet color in 1/1 RTT is obtained, which does not differ from a red. post-treated coloring, which is obtained with finished dye if the amounts of pure dye used are the same for both dyeings.
• Example 2 0.22% of the dye of the formula is used in the form of a spray granulate and otherwise operates as described in Examples 1-2, a brilliant red color is obtained which corresponds in color depth, color tone and fastness to a dyeing according to the conventional dyeing method.

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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Dispersion Chemistry (AREA)
• Coloring (AREA)
• Packages (AREA)

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Applications Claiming Priority (2)

Publications (3)

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Citations (6)

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• 1979
  • 1979-01-17 DE DE19792901666 patent/DE2901666A1/de not_active Withdrawn
• 1980
  • 1980-01-07 AT AT80100060T patent/ATE1107T1/de not_active IP Right Cessation
  • 1980-01-07 DE DE8080100060T patent/DE3060454D1/de not_active Expired
  • 1980-01-07 EP EP80100060A patent/EP0013892B1/fr not_active Expired
  • 1980-01-16 BR BR8000265A patent/BR8000265A/pt unknown
  • 1980-01-16 JP JP268380A patent/JPS5598985A/ja active Pending
  • 1980-01-17 ES ES487790A patent/ES487790A0/es active Granted

Patent Citations (6)

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