Water-dispersible polyisocyanates

US6080831A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Bernhard Jansen · Cologne, DE
• Joachim Konig
• Bernd Thiele · Odenthal, DE
• Jurgen Reiners · Leverkusen, DE
• Rolf-Volker Meyer · Krefeld, DE

Key dates

• Filing date: Jun 19, 1997
• Grant date: Jun 27, 2000
• Expiry date: Jun 19, 2017

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31591
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Cellulose-containing, optionally wood-containing materials which have been obtained using water-dispersible polyisocyanates which in turn have been prepared by reaction of the following starting components: PA1 a) modified polyisocyanates of the formula (I) ##STR1## in which: R.sup.1 denotes an aliphatic hydrocarbon radical having 2 to 18 carbon atoms; a cycloaliphatic hydrocarbon radical having 4 to 15 carbon atoms; an aromatic hydrocarbon radical having 6 to 15 carbon atoms or an araliphatic hydrocarbon radical having 8 to 15 carbon atoms, PA2 R.sup.2 denotes an aliphatic hydrocarbon radical which has 10 to 35 carbon atoms and optionally contains double bonds, PA2 R.sup.3 denotes a hydrocarbon radical which is at least divalent and can also be heterocyclic, with inclusion of the ester oxygen or amide nitrogen from X, ##STR2## where R.dbd.H or C.sub.1 -C.sub.4 -alkyl, or R is a constituent of a cyclic structure, PA2 n denotes a number .gtoreq.2 and y denotes a number .gtoreq.1, PA1 b) non-modified polyisocyanates, PA1 c) polyethylene oxide polyether alcohols optionally containing ester groups, PA1 d) optionally cycloaliphatic and/or aliphatic amines which optionally contain ether,…