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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 11065851 B1

PDFFull Text
Date of Patent:
Jul. 20, 2021

Filed:

Feb. 05, 2016

Multilayer hard coating film

Applicant:

Riken Technos Corporation, Tokyo, JP;

Inventors:

Kohei Nakashima, Tokyo, JP;

Hideaki Yambe, Tokyo, JP;

Nozomu Washio, Tokyo, JP;

Taketo Hashimoto, Tokyo, JP;

Assignee:

RIKEN TECHNOS CORPORATION;

Attorneys:

Bracewell LLP

Brad Y. Chin

Primary Examiner:

Frank J Vineis

Assistant Examiner:

Nicole T Gugliotta

Int. Cl.
CPC ...
B32B 27/18 (2006.01); B32B 27/36 (2006.01); B32B 7/02 (2019.01); B32B 7/12 (2006.01); B32B 38/00 (2006.01); B32B 27/20 (2006.01); B32B 27/30 (2006.01); B29C 48/21 (2019.01); C08J 7/043 (2020.01); C08J 7/046 (2020.01); C09D 7/40 (2018.01);
U.S. Cl.
CPC ...
B32B 27/18 (2013.01); B29C 48/21 (2019.02); B32B 7/02 (2013.01); B32B 7/12 (2013.01); B32B 27/20 (2013.01); B32B 27/30 (2013.01); B32B 27/365 (2013.01); B32B 38/0004 (2013.01); C08J 7/043 (2020.01); C08J 7/046 (2020.01); C09D 7/40 (2018.01); B32B 2255/10 (2013.01); B32B 2255/26 (2013.01); B32B 2255/28 (2013.01); B32B 2307/412 (2013.01); B32B 2457/208 (2013.01); G06F 2203/04103 (2013.01);
Abstract

One embodiment provides a multilayer hard coating film which sequentially includes, from the superficial layer side, a first hard coating and a resin film, and wherein: the first hard coating is formed from a coating material that contains a specific amount of (A) a polyfunctional (meth)acrylate and a specific amount of (B) a water repellent agent, while containing no inorganic particles; and the resin film includes at least one layer of (α) an acrylic resin that contains 50-95% by mole of a structural unit derived from methyl methacrylate and 50-5% by mole of a structural unit derived from vinyl cyclohexane when the total of the structural units derived from polymerizable monomers is taken as 100% by mole. Another embodiment provides a multilayer hard coating film which includes a second hard coating in addition to a first hard coating, and wherein: the first hard coating contains (C) a silane coupling agent in addition to the above-described components (A) and (B); and the second hard coating is formed from a coating material that contains a specific amount of (A) a polyfunctional (meth)acrylate and a specific amount of (D) inorganic fine particles having an average particle diameter of 1-300 nm.

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