公开(公告)号：US20180081082A1

公开(公告)日：2018-03-22

申请号：US15566960

申请日：2016-04-15

Applicant: KANEKA CORPORATION

Inventor： Hiroto KOMA ,  Ryutaro MUKAI ,  Tomohiro ABO

IPC: G02B1/08 ,  G02B5/30 ,  C08K3/36 ,  C08L1/30 ,  C08J5/18 ,  C08K7/18

CPC classification number: G02B1/08 ,  C08J5/18 ,  C08J2301/28 ,  C08K3/36 ,  C08K7/18 ,  C08K9/06 ,  C08K2201/003 ,  C08K2201/011 ,  C08L1/30 ,  C08L2205/025 ,  G02B5/3083 ,  G02F1/13363 ,  C08L1/32

Abstract: The retardation film according to the present invention is characterized by: including a polymer material that includes at least one cellulose derivative which includes specific monomer units; having an in-plane retardation Re(550) of 105-160 nm, reverse wavelength dispersion property, Re(450)/Re(550), of 0.80-0.89, and a thickness of 20-50 μm; and containing inorganic particles. In particular, the present invention exhibits the effect of reducing the photoelastic coefficient.

公开(公告)号：US20180282438A1

公开(公告)日：2018-10-04

申请号：US15766265

申请日：2016-10-06

Applicant: KANEKA CORPORATION

Inventor： Ryutaro MUKAI ,  Hiroto KOMA ,  Takahiro YASUMOTO ,  Katsuya FUJISAWA ,  Tomohiro ABO

IPC: C08B15/05 ,  C08B3/08 ,  C08J5/18 ,  G02B5/30

Abstract: Provided is a polymer material containing at least one kind of a cellulose derivative having (a) an organosilyl group (the organosilyl group having a first aliphatic group, an unsaturated aliphatic group, or an aromatic group), and (b) an acyl group or a second aliphatic group.

公开(公告)号：US20160274286A1

公开(公告)日：2016-09-22

申请号：US15030683

申请日：2014-10-20

Applicant: KANEKA CORPORATION

Inventor： Ryutaro MUKAI ,  Tomohiro ABO

IPC: G02B5/30 ,  G02F1/1335 ,  G02B1/111 ,  G02F1/13363 ,  B29C55/04 ,  B29D11/00

CPC classification number: G02B5/3083 ,  B29C55/04 ,  B29C55/06 ,  B29D11/00788 ,  B29K2001/08 ,  B29L2011/00 ,  C08J5/18 ,  C08J2301/00 ,  G02B1/111 ,  G02B5/305 ,  G02F1/133528 ,  G02F1/13363 ,  G02F2001/133541 ,  G02F2001/133635 ,  G02F2202/40 ,  G02F2413/13 ,  Y10T428/105

Abstract: The present invention achieves a phase difference film that is excellent in wavelength dispersion property, in-plane retardation, and film thickness, by using a polymeric material (i) which is composed of at least one type of cellulose derivative having a specific alkoxyl group substitution degree D1 and a specific 2-naphthoyl group substitution degree D2 and (ii) which has a specific total 2-naphthoyl group substitution degree D3.

Abstract translation: 本发明通过使用由至少一种具有特定烷氧基取代的纤维素衍生物构成的聚合物（i），实现了波长分散性，面内相位差，膜厚优异的相位差膜 度D1和特定的2-萘甲酰基取代度D2和（ii）具有特定的总2-萘甲酰取代度D3。