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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 11136473 B1

PDFFull Text
Date of Patent:
Oct. 05, 2021

Filed:

Jan. 10, 2017

Fluorine-containing coating film and water- and oil-repellent coating composition

Applicant:

Sumitomo Chemical Company, Limited, Tokyo, JP;

Inventors:

Sayaka Sakurai, Osaka, JP;

Yasuharu Shimazaki, Osaka, JP;

Hidekazu Yoshida, Osaka, JP;

Assignee:

SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Megha M Gaitonde

Int. Cl.
CPC ...
B32B 3/26 (2006.01); C09D 183/12 (2006.01); C08L 83/04 (2006.01); C09D 5/16 (2006.01); C09D 7/65 (2018.01); C09D 183/08 (2006.01); C09D 7/20 (2018.01); C08G 77/24 (2006.01); C08G 77/46 (2006.01); C09D 5/00 (2006.01); C08G 77/20 (2006.01); C08L 83/14 (2006.01); C08G 77/50 (2006.01); C08G 77/00 (2006.01);
U.S. Cl.
CPC ...
C09D 183/12 (2013.01); C08G 77/24 (2013.01); C08G 77/46 (2013.01); C08L 83/04 (2013.01); C09D 5/00 (2013.01); C09D 5/1637 (2013.01); C09D 7/20 (2018.01); C09D 7/65 (2018.01); C09D 183/08 (2013.01); C08G 77/20 (2013.01); C08G 77/50 (2013.01); C08G 77/70 (2013.01); C08G 2150/00 (2013.01); C08L 83/14 (2013.01);
Abstract

It is an object of the present invention to provide a coating film capable of realizing satisfactory sliding properties in addition to water- and oil-repellent properties and wear resistance evaluated by a static contact angle, and a coating composition for obtaining the coating film. The present invention is directed to a fluorine-containing coating film which has a root mean square roughness of less than 3.5 nm and has a perfluoropolyether structure. It is preferred that the coating film has a polysiloxane backbone and further has a structure in which a fluoroalkyl group is directly bonded to a silicon atom of the polysiloxane backbone, and that a sliding angle of 6 μL of a water droplet is 24.3° or less, or a speed of 20 μL of a water droplet sliding on a coating film inclined at 32° is 0.1 cm/second or more.

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