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
  • 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
  • D06P1/6135—Addition products of hydroxyl groups-containing compounds with oxiranes from aromatic alcohols or from phenols, naphthols
• • 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

Definitions

• the invention offers a solution to the unevenness problems in dyeing carrier-free dyeable polyester fibers, so-called.
• NCD fibers by using ethylated alkylphenols or naphthols as leveling agents.
• polyester fibers which cannot be dyed carrier-free, consist of the relatively highly crystalline polyethylene terephthalate and are known to be dyed satisfactorily only at temperatures above 100 ° C. or with the use of dyeing aids, the "carriers” that break down the fiber for the disperse dyes to a certain extent .
• the dyeing of polyester fibers in a mixture with other, temperature-sensitive fibers, in particular with wool and polyurethane fibers remains problematic even when the carriers are used.
• the other fiber portion is loaded with carriers, which must then be washed out.
• the use of most carriers has to be increasingly restricted for ecological reasons.
• dyeing at high temperature requires a relatively large amount of energy, which is increasingly disadvantageous.
• the carrier-free dyeable polyester fibers developed in recent years essentially still consist of polyethylene terephthalate. However, this is modified by the incorporation of certain proportions of other molecular building blocks, i.e. other dicarboxylic acids and / or hydroxycarboxylic acids and / or diols in the sense of reduced crystallinity and thus improved colorability, so that the use of carriers or high temperature is unnecessary and dye can be saved or deeper shades can be achieved.
• other molecular building blocks i.e. other dicarboxylic acids and / or hydroxycarboxylic acids and / or diols
• the invention was therefore based on the object of developing a process for dyeing carrier-free dyeable polyester fibers with disperse dyes which avoids these disadvantages, that is to say, when using the conventional dyeing units, reliably leads to level dyeings.
• the dyeings obtainable by this process are irrelevant even when the dyeing liquor or the material to be washed is only slightly moved, and when dyeing wound textile webs there are no differences in the coloration between the inner and outer web end.
• the process according to the invention is carried out under the conditions customary for dyeing NCD fibers.
• the leveling agent according to the invention is used in amounts of 0.5 to 20, preferably 1 to 4%, based on the weight of the NCD fibers. Within these limits, the amount depends mainly on the type and amount of the dye used.
• the leveling agent consists of an oxyethylated alkylphenol or alkylnaphthol with 5 to 14, preferably 9 carbon atoms in the alkyl radical.
• the degree of oxyethylation, i.e. the number of attached ethylene oxide molecules is 4 to 25, preferably 8 to 12.
• disperse dye is familiar to the person skilled in the art and can be found in the Color Index or also L. Diserens, "The Latest Advances in the Application of Dyes", 2nd Edition, Ed. Birkhäuser, Basel 1949, Vol. 2, pp. 254 ff . It does not require any further explanation, especially since practically no other class of dyestuff can be considered for dyeing polyester fibers.
• the levelness of the dyeings is considerably improved by the process according to the invention. Apart from that, with regard to the ecology, it is by no means indifferent whether one of the almost entirely toxic carriers or the comparatively harmless, largely biodegradable Egali- sierstoff is used. The invention therefore requires technical progress in two respects.
• the percentages given in the examples relate to the weight of the polyester fiber material to be dyed.
• EO stands for ethylene oxide
• PO propylene oxide
• Example 10 g of knitted fabrics made from the same carrier-free dyeable polyester fibers as in Example 3 were dyed with a dye combination as in Example 3 using 4% of a C 9 alkylphenol with 20 EO in a liquor ratio of 1:30.
• the dyeing process was carried out as in Example 1. The coloring didn't matter; the control staining without aids, however, became uneven.
• a strip 13 cm wide and 8 m long (500 g) of a knitted fabric made of the same carrier-free dyeable polyester fibers as in Example 1 was wound on a perforated cylinder and in a laboratory dyeing machine with the direction of circulation from the inside to the outside and a flow rate of 15 1 / kg / min with dyed in a liquor ratio of 1:20 at pH 5.5.
• As Auxiliaries were chosen 2% of a C 9 alkylphenol with 9 EO.
• the dye liquor was heated from 70 ° C. to the boiling temperature in 15 minutes and left at the boiling temperature for 60 minutes. After dyeing, rinsing was carried out and reductively cleaned and rinsed again as in Example 1.
• the strip was colored in an olive green tone and showed no difference in color or depth between the beginning and the end.
• the control dyeing without auxiliaries showed a strong unegality on the entire fabric and a large color deviation between the inside and outside of the winding.
• Example 10 g of knitted fabrics made from the same carrier-free dyeable polyester fibers as in Example 2 were dyed with a dye combination as in Example 5 using 2% of a C 9 dialkylphenol with 16 EO in a liquor ratio of 1:20.
• the dyeing process was carried out as in Example 1. The coloring didn't matter; however, the control staining without aids was uneven.

Landscapes

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

Applications Claiming Priority (2)

Publications (2)

Family

ID=6096313

Family Applications (1)

Country Status (3)

Families Citing this family (2)

Family Cites Families (10)

• 1980
  • 1980-03-05 DE DE19803008388 patent/DE3008388A1/de not_active Withdrawn
• 1981
  • 1981-02-10 US US06/233,300 patent/US4345910A/en not_active Expired - Lifetime
  • 1981-02-21 EP EP81101257A patent/EP0035678A3/fr not_active Withdrawn

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