Process for disinfecting and preserving hides and skins
AssigneeRiedel-de Haen Aktiengesellschaft
InventorFranz Margold
Life of this patent
Estimating the term…
Abstract
Hides and skins are disinfected and preserved by contacting them with a mixture of an inorganic zinc salt and an acid amide and subsequently with common salt and an acid having a disinfectant and preservative action. The mixture of zinc salt and acid amide is used in general in an amount of at most 2 weight %. The efficiency of the mixture may be improved by using additionally a further organic preservative. Carboxylic acids are especially suitable for the aftertreatment using a salt-acid pickle. The process is particularly appropriate for preserving hides and skins as well as furskins of different kinds and provenance.
Claims6
A process for disinfecting and preserving one or more hides or skins of any kind and provenance by treating it or them with one or more substances having a disinfectant and preservative action, which comprises contacting the one or more hides or skins with up to 2 weight %, calculated on the weight of said one or more hides or skins, of a mixture consisting of an inorganic zinc salt and an acid amide, or said mixture in combination with at least one further nitrogen-containing organic preservative, and subsequently with 5 to 10 weight %, calculated on the weight of said one or more hides or skins, of common salt and 0.5 to 2.5 weight %, calculated on the weight of said one or more hides and skins, of a mono- or dibasic carboxylic acid of from 1 to 6 carbon atoms.
A process for disinfecting and preserving one or more hides or skins of any kind and provenance by treating it or them with one or more substances having a disinfectant and preservative action, which consists essentially of contacting the one or more hides or skins with up to 2 weight %, calculated on the weight of said one or more hides or skins, of a mixture consisting of an inorganic zinc salt and an acid amide, or said mixture in combination with at least one further nitrogen-containing organic preservative, and subsequently with 5 to 10 weight %, calculated on the weight of said one or more hides or skins, of common salt and 0.5 to 2.5 weight %, calculated on the weight of said one or more hides and skins, of a mono- or dibasic carboxylic acid of from 1 to 6 carbon atoms.
Dependencies are inferred from the claim text.