The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 19, 2002
Filed:
Feb. 02, 2000
Markus A. Schafheutle, Graz, AT;
Rami-Raimund Awad, Graz, AT;
Hannelore Gsoell, Graz, AT;
Birgit Anner, Graz, AT;
Anton Arzt, Tillmitsch, AT;
Martina Glettler, Graz, AT;
Andreas Lerch, Fernitz, AT;
Gerlinde Petritsch, Graz, AT;
Joerg Wango, Wundschuh, AT;
Solutia Austria GmbH, Werndorf, AT;
Abstract
Oxidatively drying aqueous polyurethane dispersions obtainable by reacting drying and/or simidrying oils with low molar mass hydroxy compounds having two or more hydroxyl groups to give compounds containing on average at least one hydroxyl group and at least one radical of a fatty acid having at least one olefinic double bond, then reacting these compounds together with high molar mass polyols, compounds having at least two isocyanate-reactive groups and at least one acid or cation-forming group with polyfunctional isocyanates to give prepolymers having a mass fraction of unreacted isocyanate groups of from 0.1 to 4%, then neutralizing the product and transferring the utilized product to the aqueous phase, a process for preparing them and their use for coating wood.