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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 9778399 B1

PDFFull Text
Date of Patent:
Oct. 03, 2017

Filed:

Jan. 14, 2013

Composition for transparent antistatic coating

Applicant:

Essilor International (Compagnie Generale D'optique), Charenton-le-Pont, FR;

Inventors:

Joshua Hazle, Largo, FL (US);

Ronald Harmon, Clearwater, FL (US);

Hoa T. Dang, Tampa, FL (US);

Assignee:

ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE), Charenton-le-Pont, FR;

Attorney:

Norton Rose Fulbright US LLP

Primary Examiner:

Robert Jones, Jr

Int. Cl.
CPC ...
G02B 1/16 (2015.01); C09D 5/00 (2006.01); C09D 183/00 (2006.01); C09D 7/12 (2006.01); G02C 7/02 (2006.01); C09D 183/06 (2006.01); C09D 183/08 (2006.01); C08K 5/43 (2006.01); G02B 1/10 (2015.01); G02B 27/00 (2006.01); G02B 1/04 (2006.01); C08K 3/36 (2006.01); C08K 5/00 (2006.01); C08K 5/42 (2006.01);
U.S. Cl.
CPC ...
G02B 1/16 (2015.01); C08K 5/43 (2013.01); C09D 5/00 (2013.01); C09D 7/1216 (2013.01); C09D 183/00 (2013.01); C09D 183/06 (2013.01); C09D 183/08 (2013.01); G02B 1/04 (2013.01); G02B 1/105 (2013.01); G02B 27/0006 (2013.01); G02C 7/02 (2013.01); C08K 3/36 (2013.01); C08K 5/0075 (2013.01); C08K 5/42 (2013.01);
Abstract

The present invention relates to a curable composition providing upon curing a transparent antistatic coating comprising a silica organosol, a salt comprising an alkali cation and a Bronsted acid. The invention further relates to optical articles comprising a substrate at least partially coated with a transparent antistatic coating formed by depositing onto substrate and curing the above curable composition. The obtained optical articles exhibit enhanced antistatic properties, high optical transparency, low haze and good mechanical properties, in particular a good abrasion resistance.

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