Sizes based on ketene dimers

US4614546A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Wolf-Dieter Schroer · Leverkusen, DE
• Ulrich Beck · Bornheim, DE
• Peter Mummenhoff · Cologne, DE
• Heinz Baumgen · Leverkusen, DE

Key dates

• Filing date: May 29, 1985
• Grant date: Sep 30, 1986
• Expiry date: May 29, 2005

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D21H17/17
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

New aqueous sizes, in particular paper sizes, are made available which contain PA0 (a) ketene dimers of the formula ##STR1## in which R.sub.1 and R.sub.2 can be identical or different and represent hydrocarbon radicals having 6 to 30 carbon atoms, PA0 (b) amine-modified starch, PA0 (c) hydrophobic compound(s) which contain(s) one or more functional groups which are reactive towards OH groups within a pH range of 2 to 6, and PA0 (d) if desired further auxiliaries.