Method of dressing leather

US3987223A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Kuno Wagner · Leverkusen, DE
• Walter Schroer · Leverkusen, DE

Key dates

• Filing date: Oct 30, 1974
• Grant date: Oct 19, 1976
• Expiry date: Oct 30, 1994

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2375/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Stable solutions of diisocyanate polyaddition products in a solvent mixture containing: a) inert organic solvents, b) primary and/or secondary alcohols and c) semiacetals of formaldehyde and the process of preparing such solutions. Methods of dressing leather with said solutions are also disclosed.