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
  • D06P1/64—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
  • D06P1/65125—Compounds containing ester 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
  • 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
• • 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
  • D06P1/642—Compounds containing nitrogen
  • D06P1/649—Compounds containing carbonamide, thiocarbonamide or guanyl groups
  • D06P1/6495—Compounds containing carbonamide -RCON= (R=H or 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
  • D06P3/02—Material containing basic nitrogen
  • D06P3/04—Material containing basic nitrogen containing amide groups
  • D06P3/32—Material containing basic nitrogen containing amide groups leather skins

Definitions

• the leather treatment compositions according to the invention preferably contain components a) and b) in a weight ratio of 95: 5 to 5:95. They are used as a solution, emulsion or dispersion, preferably as an aqueous solution.
• the pH of the aqueous solutions is between 3 and 9, preferably between 5 and 8.
• the total concentration of a) and b) in the leather treatment compositions is, for example, 15-60% by weight, preferably 30-60% by weight.
• Components a) are free from amino groups and preferably have a molecular weight of 500-10,000.
• the components b) in particular have a molecular weight of 300-10,000.
• Components a) are produced by adding ethylene and / or propylene oxide to suitable starters.
• suitable starters examples include: water; Monoalcohols such as methanol, ethanol, butanol; Diols such as ethylene glycol, 1,2-propanediol, 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol, 1,4- and 3,6-dianhydrosorbitol, 4,4'-dihydroxydiphenylpropane; Triols such as glycerin, trimethylolethane, trimethylolpropane; higher polyols such as pentaerythritol, sorbitol, mannitol, formitol, formose, sucrose; Phenol and alkylphenols such as nonylphenol.
• Preferred compounds a) are those which are more than 1 g / l water-soluble at 20 ° C.
• Components b) are obtained by reacting polyvalent carboxylic acids with polyhydric alcohols, amines and amino alcohols to give oligoester amide carboxylic acids.
• the carboxylic acids can be used in the form of their anhydrides.
• carboxylic acids are: succinic acid, adipic acid, suberic acid, azelaic acid, sebacic acid, phthalic acid, tetrahydrophthalic acid, hexahydrophthalic acid, isophthalic acid, terephthalic acid, tetrachlorophthalic acid, glutaric acid, maleic acid, fumaric acid.
• polyhydric alcohols are: ethylene glycol, 1,2-propanediol, 1,3-propanediol, 1,4-butanediol, 2,3-butanediol, 1,6-hexanediol, 1,8-ethanediol, neopentylglycol, 1, 4-bis-chydroxymethyl] cyclohexane, 2-melhyl-1,3-propanediol, glycerin, trimethylolpropane, 1,2,6-hexanetriol, 1,2,4-butanetriol, trimethylolethane, pentaerythritol, quinite, mannitol, sorbitol, formitol , Methylglycoside, furthermore in particular oligoethylene glycols and oligopropylene glycols.
• polyvalent amines examples include: ethylenediamine, 1,2-propylenediamine, 1,3-propylenediamine, 1,6-hexamethylenediamine, l-amino-3-aminomethyl-3,5,5-trimethylcyclohexane, 1,4-diaminocyclohexane, Diethylenetriamine, triethylenetetramine, dipropylenetriamine, tripropylenetetramine.
• amino alcohols are: ethanolamine, diethanolamine, N-methylethanolamine, N-methyldiethanolamine, isopropanolamine, diisopropanolamine, N-methylisopropanolamine, N-methyldiisopropanolamine,
• DE-AS 2 856 628 describes ethylene oxide adducts with alkylamines with 8-20 C atoms as leveling agents and penetration aids for dyes.
• DE-AS 2 539 671 also shows that C 4-22 -alkylamines with hydroxyethyl end groups equalize colorations.
• An alkylamine with preferably more than 12 carbon atoms in the alkyl group and with hydroxyethyl groups is described as dyeing aid in GB-PS 705 335.
• Nonionic addition products of ethylene oxide together with ethoxylated C 10-22 fatty amines are described as surface-active dyeing aids for nitrogen-containing substrates such as leather in US Pat. No. 3,334,960.
• the mixtures according to the invention do not have these disadvantages. They result in a deep penetration of the dye into the leather and at the same time a high color strength on the surface and excellent exhaustion of the dyeing liquor.
• the process for leather treatment with the new mixtures is carried out according to known methods in tanning drums or tanning mixers.
• the temperatures are generally 10-90 ° C, preferably 30-60 ° C.
• the aqueous treatment liquors contain a total of 0.01-20% by weight, preferably 0.2-2% by weight (based on the shaved weight) of the agents according to the invention.
• the treatment can be carried out before or at the same time as the coloring and also together with the oiling.
• the products according to the invention are preferably used together with the dye in solution.
• Suitable dyes are the dyes customary for leather dyeing, which are described, for example, in the Color Index, Vol. 2, 3rd Edition.
• the amount of the dye applied to the leather and the amount of dye in the remaining liquor are determined optically in the following examples according to the test described by H. Traubel and A. Goffin in “Leather and Skin Market, Sept. 1985” (hereinafter referred to as "Test A” designated) determined.
• Alkylene oxide adducts are prepared in a known manner by adding oxiranes to starter alcoholates and then neutralizing, filtering salts and optionally adding oxidation inhibitors.
• trimellitic anhydride 576 parts are melted at 180 ° C. 268 parts of dipropylene glycol are added dropwise over the course of 2 hours. Then 54 parts of water are distilled off in a water jet vacuum until the acid number of the product is 288 mg KOH / g. After cooling to 100 ° C., the product is dissolved in a mixture of 618 parts of water and 260 parts of 25% ammonia.
• compositions 3.1.-3.9 listed in Tab. 1 were produced and tested in detail.
• Chrome-tanned leather (4.0 X Cr 2 O 3 based on 14% water) is divided and processed in various ways (percentages relate to the fold weight).
• the leather is washed, neutralized, retanned and dyed according to the following formula:
• the liquor is drained off after retanning and 300% water at 50 ° C. and 0.5% of the mixtures 3.1.-3.9 according to the invention are added. After 15 min, 1.5 X Direct Brown 80 (CI 20210) and 3% fat liquor mixture (1) added. After a running time of 40 minutes, the dye is fixed by treatment with 1% 85% formic acid (pH 4-4.5) for 20 minutes.
• the leather is finished as usual. It has a satisfactory surface color strength and good depth of penetration of the dye.
• washing, neutralizing and retanning are carried out as in method A.
• the dyeing is carried out as follows.
• the leather is first tanned with 0.8% of the mixture according to the invention 3.3 without retanning. or 3.6, 15 min treated (300% water, 50 ° C). The coloring is then carried out with 1 X C.I. Acid Black 173 (40 min). Greasing, dye fixation and completion are the same as for method A (Table 2).
• C.I. Acid Black 173 can also C.I. Acid Red 279 and C.I. Acid Brown 429 can be used.
• the leather is treated as in method C, but a retanning as in method A is carried out between neutralization and dyeing.
• the leathers are washed, neutralized and dyed as in Method C, using either 1% C.I. Acid Red 279 (Table 3) or 1% C.I. Acid Brown 429 (Table 4) can be used.
• the leathers are washed, neutralized and retanned as in Method D and dyed as in Method F.
• the chrome extract is then made.
• washing, retanning, neutralizing and retanning are carried out analogously to method E and staining analogously to method F.
• the chrome extract is then again produced.
• the determination of the color strength on the leather obtained by the CH methods and the amounts of dye in the remaining liquor are determined according to "Test A" and listed in Tables 2-4.
• the leather is cut open at an angle of 10-20 ° C to the surface and the penetration behavior is assessed visually for comparison.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Treatment And Processing Of Natural Fur Or Leather (AREA)
• Coloring (AREA)

Applications Claiming Priority (2)

Publications (3)

Family

ID=6299664

Family Applications (1)

Country Status (4)

Cited By (1)

Families Citing this family (2)

Family Cites Families (7)

• 1986
  • 1986-04-26 DE DE19863614280 patent/DE3614280A1/de not_active Withdrawn
• 1987
  • 1987-04-14 EP EP87105532A patent/EP0243788B1/fr not_active Expired - Lifetime
  • 1987-04-14 DE DE87105532T patent/DE3787493D1/de not_active Expired - Fee Related
  • 1987-04-21 US US07/040,915 patent/US4831075A/en not_active Expired - Fee Related
  • 1987-04-21 JP JP62096389A patent/JPS62263390A/ja active Pending

Also Published As

Similar Documents

Legal Events