Sizes

US4499153A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Wulf von Bonin · Leverkusen, DE
• Peter Mummenhoff · Cologne, DE
• Ulrich Beck · Bornheim, DE
• Heinz Baumgen · Leverkusen, DE

Key dates

• Filing date: Feb 15, 1983
• Grant date: Feb 12, 1985
• Expiry date: Feb 15, 2003

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31783
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

New products having excellent sizing action, in particular on paper are obtained by reacting .alpha.,.beta.-unsaturated carboxylic acids or their reactive derivatives (such as, for example, esters or anhydrides) with amide-amines of higher carboxylic acids at temperatures above 120.degree. C. The new products are used in size formulations, preferably as aqueous alkaline and, in particular, aqueous ammoniacal, dispersions.