Primer for leather finishes

US4772289A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Hermann Anzinger · Goldkronach, DE
• Hans-Herbert Friese · Monheim, DE
• Gerhard Kaindl · Hilden, DE
• Michael Marschner · Neuss, DE
• Uwe Ploog · Haan, DE
• Ludwig Schieferstein · Ratingen, DE
• Horst Schulz
• Rolf Tenhaef · Goldkronach, DE

Key dates

• Filing date: Jul 28, 1987
• Grant date: Sep 20, 1988
• Expiry date: Jul 28, 2007

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C14C11/00
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for improving the adhesion of finishes to oiled and/or hydrophobicized leathers wherein oiled and/or hydrophobicized leathers are treated before prefinishing and/or in the prefinish with aqueous dispersions containing PA0 (A) short-chain and/or medium-chain alkyl ether phosphates and PA0 (B) finely divided, soft, urea-group-terminated, aliphatic anionic polyurethane dispersions.