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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 11459470 B1

PDFFull Text
Date of Patent:
Oct. 04, 2022

Filed:

Jul. 11, 2014

Antistatic coating compositions

Applicant:

Essilor International, Charenton le Pont, FR;

Inventor:

Haipeng Zheng, Dallas, TX (US);

Assignee:

Essilor International, Charenton-le-Pont, FR;

Attorney:

Norton Rose Fulbright US LLP

Primary Examiner:

Maria V Ewald

Assistant Examiner:

Daniel P Dillon

Int. Cl.
CPC ...
C08K 3/36 (2006.01); C09D 5/24 (2006.01); C09D 183/06 (2006.01); G02B 1/16 (2015.01); C09D 7/63 (2018.01); C09D 7/65 (2018.01); C08K 5/43 (2006.01); C09D 5/00 (2006.01); C08L 71/02 (2006.01); C08K 5/06 (2006.01); C08L 71/12 (2006.01); C08K 5/42 (2006.01); C08G 77/26 (2006.01); C08G 77/14 (2006.01); C09D 7/40 (2018.01);
U.S. Cl.
CPC ...
C09D 7/63 (2018.01); C08K 3/36 (2013.01); C08K 5/06 (2013.01); C08K 5/43 (2013.01); C08L 71/02 (2013.01); C09D 5/00 (2013.01); C09D 5/24 (2013.01); C09D 7/65 (2018.01); C09D 183/06 (2013.01); G02B 1/16 (2015.01); C08G 77/14 (2013.01); C08G 77/26 (2013.01); C08K 5/42 (2013.01); C08L 71/126 (2013.01); C09D 7/40 (2018.01);
Abstract

Described is a curable composition that includes a salt comprising an alkali cation or rare earth metal ion and a counter ion which is the conjugate base of a superacid, a silicon containing binder, and an additive having a formula R1-O—[(CH—CHR3)-O]—R2, in which R1 and R2 represent H or an alkyl group, R3 is H or methyl, and n is an integer ranging from 2 to 200. Said composition is typically provided as a coating or hard coating. When cured, the composition provides good antistatic performance on its surface or to a surface on which it is applied. The composition when formed may also provide high optical transparency. The composition when formed exhibits low haze and good mechanical properties, such as good abrasion resistance, or good scratch resistance, or good mar resistance to its surface or to the surface on which it is applied.

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