摘要:
Fluent dye preparations useful for dyeing leather or wool containa) at least 15% of the weight of the dye preparation of one or more polyazo dyes in salt form which have one or more hydroxysulfonyl and/or carboxyl groups and may be present in the form of a 1:1 or 1:2 metal complex,b) from 2 to 15% of the weight of the dye preparation of a surfactant, andc) water.
摘要:
Polyazo dyes useful for dyeing leather in the free form or as copper, chromium, iron, cobalt or nickel complexes have the formula ##STR1## where m is 0, 1 or 2, n is 0 or 1, p is from 1 to 2, q is from 0 to 1, and R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, X, Y and the ring A are each as defined, and may be prepared from aniline derivatives of the formula ##STR2## where m is 0, 1, or 2, n is 0 or 1, and X, R.sup.1, R.sub.2 and R.sup.3 are each as defined.
摘要:
Pelts and skin pelts can be self-tanned, pretanned and assist tanned and leather and skin can be retanned by using for this purpose the compound Ior an acetal thereof.
摘要:
Products of the condensation of phenolmonosulfonic acids, dihydroxydiphenyl sulfones, urea and formaldehyde can be obtained by(A) preparing a homogeneous reaction mixture in sulfuric acid from the phenolmonosulfonic acid and dihydroxydiphenyl sulfone in the molar ratio of from 3:1 to 10:1, with the proviso that the water content of the mixture is not more than 10% of the total weight of the components, and the mixture contains from 0.3 to 1.5 moles of sulfuric acid per mole of dihydroxydiphenyl sulfone, at from 100.degree. to 180.degree. C.,(B) subsequently, at from 40.degree. to 90.degree. C., carrying out a precondensation with 1 to 2 moles of formaldehyde and 0.5 to 1.5 moles of urea per mole of phenol units present in aqueous medium,(C) partially neutralizing the reaction mixture,(D) adding to the partially neutralized reaction mixture 0 to 0.5 mole of phenol per mole of phenol units present and then 0.1 to 0.8 mole of formaldehyde per mole of phenol units then present,(E) further condensing at from 40.degree. to 90.degree. C.,(F) shifting the pH of the reaction mixture into the neutral range and(G) subsequently acidifying with a weak acid.
摘要:
Copolymers which are obtainable by free radical copolymerization of (a) C.sub.8 --C.sub.40 -monoolefins with (b) ethylenically unsaturated C.sub.4 -C.sub.8 -dicarboxylic anhydrides by mass polymerization at from 80.degree. to 300.degree. C. to give copolymers having molecular weights of from 500 to 20,000 g/mol, subsequent solvolysis of the anhydride groups of the copolymers and partial or complete neutralization of the carboxyl groups formed during the solvolysis, in an aqueous medium by means of a base, and which are present in the form of aqueous dispersions or solutions, are used as agents for rendering leathers and skins water-repellent.
摘要:
Novel compounds of the general formula I ##STR1## where A is a fiber-reactive radical of the triazine, pyrimidine or vinylsulfone series, D is a radical of a sulfo-containing diazo component of the aniline or aminonaphthalene series, K is the radical of a coupling component of the aminohydroxynaphthalene series, X is fluorine, chlorine, bromine, C.sub.1 -C.sub.4 -alkyl, trifluoromethyl, C.sub.1 -C.sub.4 -alkoxy, phenoxy, hydroxysulfonyl, carboxyl, acetyl, propionyl, methylsulfonyl, ethylsulfonyl, phenylsulfonyl, C.sub.1 -C.sub.4 -alkoxycarbonyl, phenoxysulfonyl or unsubstituted or substituted carbamyl or sulfamyl, and Y is fluorine, chlorine, bromine, C.sub.1 -C.sub.4 -alkyl, trifluoromethyl, C.sub.1 -C.sub.4 -alkoxy, phenoxy, phenoxysulfonyl, acetyl, propionyl, methylsulfonyl, ethylsulfonyl, phenylsulfonyl, p-acetylaminophenylsulfonyl, hydroxysulfonyl, C.sub.1 -C.sub.4 -alkoxycarbonyl, hydroxycarbonyl or unsubstituted or substituted carbamyl or sulfamyl, are very useful for dyeing wool and hydroxyl-containing fibers, such as cellulose and in particular cotton.
摘要:
A condensate of bis-(4-hydroxyphenyl) sulfone, an aldehyde, a dialdehyde and/or glyoxylic acid and aminoacetic acid or an N-substituted aminoacetic acid is prepared and used as a tanning assistant, in a process for tanning leather in combination with, in particular, aluminum tanning agents.
摘要:
A tanning assistant useful in particular for tanning in combination with aluminum tanning agents is obtained by condensing melamine with glyoxal and/or glyoxylic acid and optionally with an aromatic compound which has a phenolic hydroxyl group or optionally with a condensable nitrogen compound.
摘要:
Compounds of the general formula I ##STR1## wherein R.sup.1 is hydrogen, fluorine, chlorine or bromine, R.sup.2 is hydrogen, fluorine, chlorine, bromine, or nitro, B is aliphatic or a sulfo-substituted phenylene radical, and X is a dye radical, are useful for dyeing hydroxyl-containing textile material, in particular cotton.
摘要:
Copolymers which containa) from 50 to 90% by weight of C.sub.8 -C.sub.40 -alkyl methacrylates, vinyl esters of C.sub.8 -C.sub.40 -carboxylic acids or mixtures thereof andb) from 10 to 50% by weight of monoethylenically unsaturated C.sub.3 -C.sub.12 -carboxylic acids, monoethylenically unsaturated dicarboxylic anhydrides, monoesters or monoamides of monoethylenically unsaturated C.sub.4 -C.sub.12 -dicarboxylic acids, amides of C.sub.3 -C.sub.12 -monocarboxylic acids or mixtures thereofas copolymerized units and have molecular masses of from 500 to 30,000 are used in at least partially neutralized form in aqueous solution or dispersion for making leather and furs water repellent.