Agents and a process for waterproofing leathers and furs

US5658484A · kind A · utility

Assignee

• Chemische Fabrik Stockhausen GmbH · DE

Inventors

• Helmut Lohmann · Krefeld, DE
• Wolfgang Hubner · Kempen, DE
• Leonardus Strijbos · Neuenburg am Rhein, DE
• Waldemar Inger · Krefeld, DE

Key dates

• Filing date: Nov 18, 1996
• Grant date: Aug 19, 1997
• Expiry date: Nov 18, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K23/44
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to anhydrous and water-containing agents for waterproofing leathers and furs, which comprise a silicone and as emulsifier an alkyl polyalkylol ether carboxylic acid and/or an alkylaryl polyalkylol ether carboxylic acid and/or one of their alkali, alkaline earth, ammonia, amine, or alkanolamine salts. The present invention further relates to the use of these agents for waterproofing, preferably in retanning or afterwards. Subsequent to the waterproofing, an aftertreatment using metallic salts of bito tetravalent cations may be carried out.