Process for waterproofing materials having a fibrous structure and agents used to carry out this process
AssigneeChemische Fabrik Stockhausen GmbH
InventorsHelmut Lohmann, Manfred Kaussen, Leonardus Strijbos, Waldemar Inger
Life of this patent
Estimating the term…
Abstract
A process is disclosed for waterproofing materials having a fibrous structure, such as leather, persian leather or leather replacement materials, by using waterproofing agents containing sulfosuccinic acid esters. Also disclosed are waterproofing agents used to carry out this process. The sulfosuccinic acid esters are prepared by reacting maleic anhydride with monohydric or polyhydric alcohols, then by sulfitizing them. Reactive siloxanes may also be used as polyhydric alcohols.
Claims18
A process of waterproofing a material having a fibrous structure selected from the group consisting of leather and fur, said process comprising the step of waterproofing said material by treating said material in an aqueous float with a waterproofing agent without conducting a mineral salt fixation, said waterproofing agent comprising:
- i) an organosilicon di-(monosulfosuccinate) or salt thereof, or
- ii) a sulfosuccinic acid monoester or salt thereof and at least one oil selected from mineral oil, paraffins, chlorinated paraffins or silicone oils.
A process of waterproofing a material having a fibrous structure selected from the group consisting of leather and fur, said process comprising the step of waterproofing said material by treating said material in an aqueous float with a waterproofing agent comprising an organosilicon di-(monosulfosuccinate) without conducting a mineral salt fixation.
Novel sulfosuccinic acid monoesters made by reaction of .alpha., .omega.-organofunctional polysiloxanes of the formula ##STR2## wherein n is a number from 10 to 30 and m is 1 to 4, with maleic anhydride and subsequent sulfitation.
Dependencies are inferred from the claim text.