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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.:

US 9206335 B1

PDFFull Text
Date of Patent:
Dec. 08, 2015

Filed:

Nov. 16, 2012

Silica coating for enhanced hydrophilicity

Applicant:

3m Innovative Properties Company, St. Paul, MN (US);

Inventors:

Patrick J. Hager, Woodbury, MN (US);

Jay S. Schlechte, Oakdale, MN (US);

Elaine M. Yorkgitis, St. Paul, MN (US);

Naiyong Jing, Woodbury, MN (US);

Assignee:

3M Innovation Properties Company, St. Paul, MN (US);

Attorney:

Kent S. Kokko

Primary Examiner:

Elizabeth A Robinson

Int. Cl.
CPC ...
C08G 77/04 (2006.01); C09D 183/06 (2006.01); B82Y 30/00 (2011.01); C09D 7/12 (2006.01); C09C 1/00 (2006.01); C09C 1/30 (2006.01); C09D 183/02 (2006.01); C09D 183/04 (2006.01); C08K 3/36 (2006.01); C08G 77/02 (2006.01); C08K 5/00 (2006.01); C08K 5/5419 (2006.01); C08K 5/5425 (2006.01); C08K 5/5435 (2006.01); C08K 5/548 (2006.01); C08K 9/06 (2006.01); C08G 77/18 (2006.01); C08G 77/20 (2006.01);
U.S. Cl.
CPC ...
C09D 183/06 (2013.01); B82Y 30/00 (2013.01); C08G 77/045 (2013.01); C09C 1/0009 (2013.01); C09C 1/309 (2013.01); C09C 1/3081 (2013.01); C09D 7/1225 (2013.01); C09D 7/1266 (2013.01); C09D 183/02 (2013.01); C09D 183/04 (2013.01); C01P 2004/64 (2013.01); C01P 2006/12 (2013.01); C01P 2006/22 (2013.01); C08G 77/02 (2013.01); C08G 77/18 (2013.01); C08G 77/20 (2013.01); C08K 3/36 (2013.01); C08K 5/0091 (2013.01); C08K 5/548 (2013.01); C08K 5/5419 (2013.01); C08K 5/5425 (2013.01); C08K 5/5435 (2013.01); C08K 9/06 (2013.01); Y10T 428/259 (2015.01);
Abstract

A coating composition is provided comprising a) an aqueous dispersion, having a pH of less than 7.5, of silica nanoparticles having average particle diameters of 40 nanometers or less, b) an alkoxysilane oligomer; c) a silane coupling agent, and d) optionally a metal β-diketone complexing agent. The compositions may be used to prepare coated articles wherein the coating is substantially uniform in thickness, durably adheres to the substrate, and provides hydrophilic and/or antireflection surface properties to the substrate.

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