Invention Grant
- Patent Title: Cellulose acylate film, protective film for polarizing plate, polarizing plate, and liquid crystal display device
- Patent Title (中): 纤维素酰化物膜，偏光板用保护膜，偏光板和液晶显示装置
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Application No.: US13675615Application Date: 2012-11-13
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Publication No.: US08922889B2Publication Date: 2014-12-30
- Inventor: Nobutaka Fukagawa , Masaki Noro , Shuuji Kanayama , Hiroshi Inada
- Applicant: Fujifilm Corporation
- Applicant Address: JP Tokyo
- Assignee: Fujifilm Corporation
- Current Assignee: Fujifilm Corporation
- Current Assignee Address: JP Tokyo
- Agency: Edwards Neils PLLC
- Agent Jean C. Edwards, Esq.
- Priority: JP2011-248841 20111114
- Main IPC: G02B5/30
- IPC: G02B5/30 ; C09K19/02 ; B32B23/04 ; C08L1/10
Abstract:
There is provided a cellulose acylate film, containing a hindered amin-based compound, wherein the hindered amine-based compound is contained in an amount of 0.001% by mass to 5% by mass based on cellulose acylate, a minimum value of Knoop hardness is 170 N/mm2 to 220 N/mm2, and the Knoop hardness is measured several times by a Knoop indenter, the Knoop indenter is rotated by a given angle in each measurement, and a rotation axis of the Knoop indenter is orthogonal to an upper surface of the cellulose acylate film.
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