Invention Grant
- Patent Title: Hardcoat multilayer film
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Application No.: US16463994Application Date: 2017-11-07
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Publication No.: US11639428B2Publication Date: 2023-05-02
- Inventor: Nozomu Washio
- Applicant: RIKEN TECHNOS CORPORATION
- Applicant Address: JP Tokyo
- Assignee: RIKEN TECHNOS CORPORATION
- Current Assignee: RIKEN TECHNOS CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Bracewell LLP
- Agent Brad Y. Chin
- Priority: JPJP2016-229018 20161125
- International Application: PCT/JP2017/040099 WO 20171107
- International Announcement: WO2018/096921 WO 20180531
- Main IPC: B32B27/08
- IPC: B32B27/08 ; C08J7/04 ; B32B27/18 ; B32B27/30 ; B32B27/32 ; B32B27/36 ; C08K3/36 ; C08K5/375 ; C08K5/548 ; C08K5/544

Abstract:
One embodiment is a hardcoat multilayer film which includes layers, namely, a first hardcoat, a second hardcoat and a transparent resin film sequentially from the surface layer side. The first hardcoat is formed from a coating material that does not contain inorganic particles, while containing 100 parts by mass of (A) a polyfunctional (meth)acrylate, 0.5-20 parts by mass of (B) a compound having two or more secondary thiol groups in each molecule, 0.01-7 parts by mass of (C) a water repellent agent and 0.01-10 parts by mass of (D) a silane coupling agent; and the second hardcoat is formed from a coating material that contains 100 parts by mass of (A) a polyfunctional (meth)acrylate and 30-300 parts by mass of (F) inorganic fine particles having an average particle diameter of 1-300 nm. The polyfunctional (meth)acrylate (A) may contain 20% by mass or more of a tripentaerythritol acrylate. The coating material which forms the first hardcoat may additionally contain 0.1-5 parts by mass of (E) a thiophenyl-based photopolymerization initiator.
Public/Granted literature
- US20200282710A1 HARDCOAT MULTILAYER FILM Public/Granted day:2020-09-10
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