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:
Dec. 29, 2009
Filed:
Dec. 19, 2005
Naiyong Jing, Woodbury, MN (US);
Tatsuo Fukushi, Woodbury, MN (US);
Chuntao Cao, Woodbury, MN (US);
Lan H. Liu, Rosemount, MN (US);
Thomas P. Klun, Lakeland, MN (US);
William D. Coggio, Hudson, WI (US);
Vivian W. Jones, Woodbury, MN (US);
Naiyong Jing, Woodbury, MN (US);
Tatsuo Fukushi, Woodbury, MN (US);
Chuntao Cao, Woodbury, MN (US);
Lan H. Liu, Rosemount, MN (US);
Thomas P. Klun, Lakeland, MN (US);
William D. Coggio, Hudson, WI (US);
Vivian W. Jones, Woodbury, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A fluoropolymer coating composition contains a homogeneous mixture of crystalline submicron fluoropolymer particles dispersed in a solvent-borne solution of less crystalline or amorphous fluororesin. The composition may be prepared by blending a latex containing crystalline submicron fluoropolymer particles with a latex containing less crystalline or amorphous fluororesin particles, coagulating and drying the blended latices, and dissolving the dried blend in a solvent for the fluororesin particles. Quasi-homogenous compositions may be prepared by blending dry crystalline submicron fluoropolymer particles with a) dry less crystalline or amorphous fluororesin particles and a solvent for the fluororesin particles, or b) a solvent-borne solution of less crystalline or amorphous fluororesin. Rubbing the disclosed coatings can provide a thin, continuous or nearly continuous fluoropolymer surface layer atop a less crystalline or amorphous fluororesin binder containing crystalline submicron fluoropolymer particles.