摘要:
A fatliquoring agent comprises A) a mixture of modified natural oils containing a1) at least one oxidized sulfited natural oil and a2) at least one oxidized sulfated natural oil, B) an emulsifier mixture containing b1) at least one C6- to C14-alkanol alkoxylated with from 4 to 12 alkylene oxide units, b2) at least one C12- to C24-alkanol alkoxylated with from 15 to 40 alkylene oxide units and b3) at least one C12- to C24-alkanol alkoxylated with from 50 to 100 alkylene oxide units, and C) if required, a linear, cyclic or branched polymer of a dialkylsilanediol, SiR2(OH)2, where R is methyl, ethyl, n-propyl or phenyl, and/or D) if required, a compound of the formula (II) where R1 and R2 are identical or different and, independently of one another, are selected from the group consisting of H, M, saturated linear aliphatic C1- to C18-alkyl and saturated branched aliphatic C3- to C18-alkyl, where at least one of the two radicals R1 and R2≠H, M with M=alkali metal or 0.5 alkaline earth metal, and M+ is selected from the group consisting of H+, NH4+, alkali metal+ and 0.5 alkaline earth metal+. The use of the novel fatliquoring agents in leather production and/or leather treatment and processes for the production and/or treatment of leather with aqueous dispersions of these fatliquoring agents are also described.
摘要:
Fatliquoring agents for the production and/or for the treatment of leather comprising (A) at least one natural lipoid; (B) at least one polymer based on the monomers acrylic acid and/or methacrylic acid; (C) an emulsifier composition containing a C6- to C17-alkanol alkoxylated with up to 12 alkylene oxide units or a mixture of two or more such alkanols and a C12- to C24-fatty alcohol mixture alkoxylated with at least 15 alkylene oxide units.
摘要:
Agents for the fatliquoring of, in particular, leathers and hides tanned in the absence of chromium comprise A) at least one modified natural oil and B) at least one stabilizer LnR where Ra is H or methyl, Rb is methyl, ethyl or tert-butyl, Rc is methyl, tert-butyl, cyclohexyl or methylcyclohexyl, R is an n-valent C3- to C30-hydrocarbon radical which is unsubstituted or substituted and/or contains hetero atoms and n is an integer from 1 to 10, the stabilizer LnR having altogether at least 20, in particular altogether at least 28, carbon atoms, and, where n is 2, —R— also being —S—, —O—, —N(H)—, —CH2—, —(CH2)2—, —CH(CH3)—, —CH2)3—, —CH(C2H5)— or —C(CH3)2—. The novel fatliquoring agents are used in leather production and/or leather treatment, and leather is produced and/or treated using aqueous dispersions of these fatliquoring agents.
摘要:
Aqueous compositions containing alkoxylated alcohols and hydrophobic components, method for the production and use thereof Compositions comprising, as components, a) at least two alkoxylated alcohols, b) at least one hydrophobic component selected from natural, modified natural and synthetic hydrophobic substances, c) at least 20% by weight, based on the total weight of the composition, of water, wherein the compositions have a mean hydrodynamic radius in the range from 1 to 200 nm, determined by dynamic light scattering.
摘要:
A process for the production of leather, wherein tanned animal hides are treated in step (A) with an aqueous liquor which comprises (a) at least one copolymer obtainable by copolymerization of (a1) at least one ethylenically unsaturated C4-C8-dicarboxylic acid or at least one derivative of an ethylenically unsaturated C4-C8-dicarboxylic acid and (a2) at least one C8-C100-α-olefin and, if appropriate, hydrolysis and/or at least partial neutralization, (b) at least one paraffin which is liquid at room temperature, (c) at least one synthetic nonionic emulsifier, the aqueous liquor being free of silicones, and furthermore silicone-free aqueous formulations and their use.