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:
Jan. 03, 2012
Filed:
Nov. 15, 2007
Arno Nennemann, Bergisch Gladbach, DE;
Michael Mager, Leverkusen, DE;
Markus Mechtel, Bergisch Gladbach, DE;
Thomas Klimmasch, Leverkusen, DE;
Christoph Gurtler, Cologne, DE;
Christian Wamprecht, Neuss, DE;
Arno Nennemann, Bergisch Gladbach, DE;
Michael Mager, Leverkusen, DE;
Markus Mechtel, Bergisch Gladbach, DE;
Thomas Klimmasch, Leverkusen, DE;
Christoph Gurtler, Cologne, DE;
Christian Wamprecht, Neuss, DE;
Bayer MaterialScience AG, Leverkusen, DE;
Abstract
The present invention relates to innovative, nanoparticle-modified polyisocyanates, a process for their preparation and to their use in coating compositions and adhesives. The process comprises the steps of 1) reacting A) polyisocyanates with B) alkoxysilanes, and subsequently 2) incorporating by dispersion inorganic particles, optionally surface modified, having an average particle size of less than 200 nm as determined by means of dynamic light scattering in dispersion, where the alkoxysilanes are according to formula (I)Q-Z—SiXY  (I)in which Q is an isocyanate-reactive group, X is a hydrolysable group, Y is identical or different alkyl groups, Z is a C-Calkylene group and a is an integer from 1 to 3.