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.:
Date of Patent:
Sep. 22, 2015
Filed:
Jan. 31, 2012
Yuki Arakawa, Tokyo, JP;
Gen-ichi Konishi, Tokyo, JP;
Shunpei Nakajima, Tokyo, JP;
Sungmin Kang, Tokyo, JP;
Junji Watanabe, Tokyo, JP;
Takuya Matsumoto, Tokyo, JP;
Suzushi Nishimura, Tokyo, JP;
Takehiro Toyooka, Tokyo, JP;
Yuki Arakawa, Tokyo, JP;
Gen-Ichi Konishi, Tokyo, JP;
Shunpei Nakajima, Tokyo, JP;
Sungmin Kang, Tokyo, JP;
Junji Watanabe, Tokyo, JP;
Takuya Matsumoto, Tokyo, JP;
Suzushi Nishimura, Tokyo, JP;
Takehiro Toyooka, Tokyo, JP;
Tokyo Institute of Technology, Tokyo, JP;
JX Nippon Oil & Energy Corporation, Tokyo, JP;
Abstract
The present invention provides a diacetylene derivative represented by the following formula (A) which exhibits liquid crystallinity by itself and has a large refractive index anisotropy or does not exhibit liquid crystallinity by itself but exhibits a large refractive index anisotropy when added to a liquid crystalline compound:R1-Sp1-(Ar1)-(Ar3)-(Phe)-C≡C—C≡C-(Phe)-(Ar4)-(Ar2)-Sp2-R2  (A)(wherein R1 and R2 are a hydrogen, halogen, cyano, isothiocyanate, alkyl, alkenyl, alkynyl or reactive group, SP1 and SP2 are each a spacer group, Ar1 and Ar2 are each a non-substituted or substituted aromatic carbocyclic or heterocyclic group, Ar3 and Ar4 are each a non-substituted or substituted heterocyclic group, Phe is a non-substituted or substituted 1,4-phenylene group, and p, q and r are each 0 or 1.