Sulfited fats as oiling agents for leather and skins
AssigneeHenkel Kommanditgesellschaft auf Aktien
InventorsHans-Herbert Friese, Friedrich Pieper, Reinhard Bosse
Life of this patent
Estimating the term…
Abstract
Sulfited fats prepared by oxidation of fats with oxygen-containing gas mixtures and simultaneous or subsequent sulfitation using alkali and/or ammonium hydrogen sulfites, wherein the fats used are mixtures containing (A) fats having iodine numbers below about 100 and (B) fatty acid esters having iodine numbers of from about 60 to about 100 and containing from 12 to 24 carbon atoms in the linear or branched, natural and/or synthetic fatty acid residue and from 1 to 5 carbon atoms in the monofunctional alcohol residue the ratio by weight of (A) to (B) being from about 9:1 to about 1:4.
Claims11
An oiling agent for the treatment of leather and skins comprising
- I. from about 10 to about 95% by weight of an oxidized sulfited fat mixture comprising
- A. at least one sulfited fat having an iodine number before sulfitation below about 100;
- and
- B. at least one sulfited fatty acid ester having an iodine number before sulfitation of from about 60 to about 100, and containing from 12 to 24 carbon atoms in a linear or branched, natural or synthetic fatty acid residue, and wherein the ester residue is from a monofunctional C.sub.1 -C.sub.5 alcohol;
- wherein the ratio by weight of A to B is from about 9:1 to about 1:4;
- and
- II. one or more of a sulfated fat, a sulfonated fat, a sulfochlorinated fat, a phosphated fat, a neutral oil, an anionic emulsifier, and a nonionic emulsifier.
Dependencies are inferred from the claim text.