United States Patent Office Patented July 30, 1974 1
3,826,610 United States Patent Office Patented July 30, 1974 1. 2. 3,826,610 As component (c) of the mixtures according to the PULVERULENT MIXTURE FORTANNING RAW invention there may especially be mentioned the adducts ANMAL HIDES AND LEATHER of about 20 to 70 moles of ethylene oxide to higher Ernst Komarek, Leverkusen, and Heinrich Spahrkas, (C-C16) alkylphenols such as nonylphenol, dodecylphe Bergisch-Neukirchen, Germany, assignors to Bayer Ak nol and hexadecylphenol, to aralkylphenols, such as phe tiengesellschaft, Leverkusen, Germany nol, C1-C4-alkylphenols, o- and p-hydroxydiphenyl substi No Drawing. Filed June 15, 1972, Ser. No. 263,076. tuted by benzyl, methylbenzyl, dimethylbenzyl, or-methyl Claims priority, application Germany, July 8, 1971, benzyl or g-phenylethyl radicals, e.g. di-benzylphenol or P 21 34 070.5 the reaction product of o-hydroxydiphenyl with 1-3 moles Int, C. C14c 3/06, 9/02 O of styrene or higher (Co-C2) fatty alcohols, such as U.S. CI. 8-94.26 5 Claims lauryl alcohol, stearyl alcohol and oleyl alcohol. In the adducts, a small percentage of the ethylene oxide, say up ABSTRACT OF THE DISCLOSUIRE to about 5% by weight, can be replaced by propylene A pulverulent mixture for tanning hides and leather oxide. n the tanning mixtures of the invention these comprising (a) a chrome tanning agent, (b) a product of 5 adducts function as non-ionic emulsifiers. the chlorination of paraffin hydrocarbons of about 8-24 In some cases it has proved advantageous to employ carbon atoms and having a chlorine content of about 20 anionic auxiliaries (emulsifier), such as paraffinsulfonic 50% by weight, and (c) an adduct of about 20 to 70 moles acids, especially alkylbenzenesulfonic acids, for example of ethylene oxide to one mole of an alkylphenol, arylalkyl dodecylbenzenesulfonic acid, or their salts, additionally to 20 the non-ionic emulsifiers in the mixtures according to the phenyl or fatty alcohol.
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