Abstract: Tanned leather, skin or pelt is produced by non-metal tanning, comprising the step of tanning a bated hide, skin or pelt with a tanning agent (A), the tanning agent (A) being a sulfo-group-containing dichloro-diazine selected from compounds of formula (I), (II), (III) and mixtures of two or more thereof, wherein R1 signifies hydrogen, methyl, methoxy, benzoyl, naphthoyl, mono- or di(C1-4-alkyl)-aminocarbonyl, C1-8-alkoxy-carbonyl or oxy-mono- or oligo-C2-3-alkyleneoxy)-carbonyl, R2—(SO3M)n signifies a radical of formula (a) or (b), wherein R3 signifies hydrogen, C1-8-alkyl or C1-8-alkoxy, m is 1 or 2, n is 1 or 2, and M signifies hydrogen or an alkali metal cation or an ammonium cation, the ammonium cation being a protonated tertiary amine or a quaternary ammonium cation, in a tanning bath, the tanning bath having a pH of from 6 to 10 at the beginning of tanning step.

Abstract: Tanned leather, skin or pelt is produced by non-metal tanning, comprising the step of tanning a bated hide, skin or belt with a tanning agent (A) of at least a mixture of compounds of formula (I) and formula (II), wherein Hal signifies fluorine or chlorine, R1 signifies hydrogen, C1-8-alkyl or an alkyleneoxy radical of formula (III), —(—C2-3 alkylene-O—)q—H (III); R2 signifies a) phenyl, mono- or di-substituted with SO3M or COOM and optionally substituted also with hydroxyl, C1-4-alkyl C1-4-alkoxy; b) naphthyl, mono- or di- or tri-substituted with SO3M and optionally substituted also with hydroxyl; c) C1-8-alkylene, substituted with (SO3M) or (COOM); d) aradical of formula (IV), —(—C2-3 alkylene-O—)p—Y (IV) or e) a radical of formula (IVa) —(C2-3 alkylene-O)p—C2-3 alkylene-SO2CH2CH2O—Y (IVa), M signifies 1 or 2, p signifies 0 or 1, Y signifies hydrogen or —SO3M, q signifies 1 to 10, M signifies hydrogen, an alkali metal cation or an ammonium cation being aprotonated tertiary amine or a quaternary ammonium

Abstract: Tanned leather, skin or pelt is produced by non-metal tanning, comprising the step of tanning a bated hide, skin or pelt with a tanning agent (A), the tanning agent (A) being at least one compound of formula (I), wherein Hal signifies chlorine or fluorine, X signifies N or CR, Y signifies hydrogen, C1-8-alkyl, C1-4-alkyl-carbonyl, C-1-4-alkyl-sulphonyl or a radical of formula (Ia), or (Ib) —(—C2-3 alkylene-O—)q—H (Ib), R signifies hydrogen or chlorine, q is 1 to 10 and M signifies hydrogen, an alkali metal cation or an ammonium cation being a protonated tertiary amine or a quaternary ammonium cation, in a tanning bath having a pH of from 6 to 10 at the beginning of the tanning step.

Abstract: Tanned leather, skin or pelt is produced by non-metal tanning, comprising the step of tanning a bated hide, skin or pelt with a tanning agent (A), the tanning agent (A) being at least one compound of a formula (I), wherein X signifies fluorine or chlorine, and/or (+NR3)0-1, wherein R is a substituted or unsubstituted C1 to C6 alkyl group, a substituted or unsubstituted C6 to C10 aryl or a C5 to C6heteroaryl group, R1 signifies hydrogen, C1-8-alkyl or an alkyleneoxy radical of a formula (Ia), -(—C2-3 alkylene-O—)q—H (Ia), R2 signifies hydrogen or hydroxyl, m, signifies 1, 2 or 3, q is of from 1 to 10, M signifies hydrogen or an alkali metal cation or an ammonium cation, being a protonated tertiary amine or a quaternary ammonium cation, in a tanning bath having a pH of from 6 to 10 at the beginning of tanning step.

Abstract: Tanned leather, skin or pelt is produced by non-metal tanning, comprising the step of tanning a bated hide, skin or pelt with a tanning agent (A), the tanning agent (A) being at least one compound of a formula (I), wherein X signifies fluorine or chlorine, and/or (+NR3)0-1, wherein R is a substituted or unsubstituted C1 to C6 alkyl group, a substituted or unsubstituted C6 to C10 aryl group or a C5 to C6 heteroaryl group, R1 signifies hydrogen, C1-8-alkyl or an alkyleneoxy radical of a formula (Ia), —(—C2-3 alkylene-O—)q—H (Ia), R2 signifies substituted or unsubstituted C2 to C8 alkylenesulphonic acid, substituted or unsubstituted C2 to C8 alkylenecarboxylic acid or an alkyleneoxy radical of formula (Ib), —(—C2-3 alkylene-O—)m—Y (Ib) or an alkylene sulfonyl alkyleneoxy radical of formula (Ic), —(—C2-3 alkylene-O—)p—C2-3 alkylene- SO2CH2O—Y (Ic), m signifies 1 or 2, p signifies 0 or 1, q is of from 1 to 10, Y signifies hydrogen or —SO3M, M signifies hydrogen or an alkali metal cation or an ammonium cation,

Abstract: Tanned leather, skin or pelt is produced by non-metal tanning, comprising the step of tanning a bated hide, skin or pelt with a tanning agent (A), the tanning agent (A) being at least one compound of a formula (I), wherein X signifies fluorine or chlorine, and/or (+NR3)0-1, wherein R is a substituted or unsubstituted C1 to C6 alkyl group, a substituted or unsubstituted C6 to C10 aryl or a C5 to C6 heteroaryl group, R1 signifies hydrogen, C1-8-alkyl or an alkyleneoxy radical of a formula (Ia), —(—C2-3 alkylene-O—)q—H (Ia), R2 signifies hydrogen, hydroxyl, C1-4-alkyl or C1-4-alkoxy, m, signifies 1 or 2, n signifies 0 to 2, q is of from 1 to 10, M signifies hydrogen or an alkali metal cation or an ammonium cation, the ammonium cation being a protonated tertiary amine or a quaternary ammonium cation, in a tanning bath, the tanning bath having a pH of from 6 to 10 at the beginning of tanning step, wherein the bated hide or skin or pelt is subjected to tanning with (A) without previous pickling.

Abstract: An embodiment of the present disclosure relates to a composition suitable for leather tanning comprising zeolite treated with monocarboxylic acid and to a method for manufacturing said composition. An embodiment of the present disclosure method comprises providing zeolite into a reactor and keeping said zeolite in motion while introducing concentrated monocarboxylic acid thereto provided that the mean temperature of the resulting composition is 50° C. or below.

Abstract: Tanned leather, skin or pelt is produced by non-metal tanning, comprising the step of tanning with a tanning agent (A) of a formula (I), Wherein Hal signifies fluorine or chlorine, R1 signifies hydrogen, C1-8-alkyl or an alkyleneoxy radical of a formula (Ia), —(—C2-3alkylene-O—)q—H (Ia), R2 signifies C-1-4-alkyl or C-1-4-alkoxy, m, signifies 1 or 2, n signifies 0 or 1, q is of from 1 to 10, M signifies hydrogen or an alkali metal cation or an ammonium cation, in a tanning bath, the tanning bath having a pH of from 6 to 10 at the beginning of tanning step, the invention relates to the defined tanning process, particular tanning agent compositions, the use of the tanned leather, skins or pelts for further processing and the produced tanned and optionally further processed leather, skins or pets.

Abstract: Tanned leather, skin or pelt is produced by non-metal tanning, comprising the step of tanning a bated hide, skin or pelt with a tanning agent (A), the tanning agent (A) being at least one compound of formula (1), R—NH—Y—SO2—Z (1), wherein R is a radical of formula wherein Hal is fluorine or chlorine, X is N or CR1, Y is an aliphatic, aromatic or aromatic hydrocarbonic bridge which may be optionally be interrupted by a heteroatom or heteroatomic group, Z is vinyl, ?-chloroethyl, ?-phosphatoethyl or ?-sulphatoethyl, R1 is hydrogen or Cl, in a tanning bath, the tanning bath having a pH of from 6 to 10 at the beginning of tanning step.

Abstract: A process of combination tannage is disclosed whereby Zirconium salt is complexed with THP salt to produce wet pink leather without using any conventional dye. The resulting leathers exhibit a shrinkage temperature of more than 100° C., and other properties comparable to those of conventionally processed leathers.

Abstract: Chromium-free leather having a waterproofness, measured as penetration time according to DIN 53338 , of at least 30 min.

Abstract: The present invention provides an improved pickling and bating free process suitable for both hides and skins for making chrome tanned leathers by using a mixture of conventional chrome tanning salt and alkali metal salt is used at a pH in the range of 5–5.5.

Abstract: Chromium-free leather having a waterproofness, measured as penetration time according to DIN 53338, of at least 30 min.

Abstract: A mixture of THP and a moderator is used to tan leather. The moderator is selected from metaphosphates and polyhydroxy or polypyrolidyl compounds such as glycerol, carboxydrates PVA or PVP.

Abstract: THP and chrome are synergistic tanning agents. The combination of THP with small amounts of chrome and optionally non-ionic and/or cationic surfactants gives increased area yield and shrink temperature compared with THP, and reduced environmental impact compared with chrome. It is possible to combine degreasing, pre-tan and main tan in a single step.

Abstract: Aqueous pigment preparations containing a) at least one pigment, b) at least one condensation product based on A) suphonated aromatics, B) aldehydes and/or ketones and optionally C) one or several compounds selected from the group of non sulphonated aromatics, urea and urea derivatives, and c) at least one polyether polyol with a boiling point of above 150° C., at normal pressure. The inventive preparations are highly suitable for pigmenting natural or synthetic materials.

Abstract: Aqueous solutions or dispersions of copolymers obtainable by free-radical copolymerization of (a) from 20 to 90% by weight of at least one monoethylenically unsaturated C4-6-dicarboxylic acid or the anhydride thereof, as component A, (b) from 5 to 50% by weight of at least one olefin having 2 to 6 carbon atoms, as component B, (c) from 5 to 50% by weight of at least one hydrophobic comonomer from the group consisting of long-chain olefins, esters of long-chain alcohols with acrylic acid or methacrylic acid, long-chain amides of acrylic acid or methacrylic acid, and long-chain alkyl vinyl ethers, as component C, (d) from 0 to 40% by weight of further comonomers which can be copolymerized with the above monomers, as component D, where the sum of the amounts of components A, B, C and, if used, D is 100% by weight, followed by at least partial esterification or hydrolysis and neutralization and/or reaction of the carboxyl groups formed during the hydrolysis with bases, for treating leather and/or fur skins.