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:
Nov. 06, 2001
Filed:
Nov. 25, 1997
Gary P. Roberts, Stillwater, MN (US);
Lowell W. Holland, St. Paul Park, MN (US);
Richard G. Hansen, Mahtomedi, MN (US);
Ashok Sengupta, London, CA;
George G. I. Moore, Afton, MN (US);
Miguel A. Guerra, Woodbury, MN (US);
3M Innovative Properties, St. Paul, MN (US);
Abstract
Coatings are provided with very low surface energies provided by fluorine and/or silicone moieties. Aqueous dispersions of externally chain extended polyurethane compositions terminated by hydrolyzable and/or hydrolyzed silyl groups and containing dispersing or emulsifying groups, particularly carboxyl groups are provided. Also polyurethane dispersions which are substantially organic solvent free which cure to water and solvent resistant, tough, scratch resistant, preferably light stable polyurethane films are provided. Such films are useful as anti-fouling marine coatings. The compound R,R′,CFCOOCH,C(R)(CH,OH),is provided.