Polymerizable optical active compound and polymerizable...

Details Polymerizable optical active compound and polymerizable... Polymerizable optical active compound and polymerizable...

2011-03-22

2011-03-22

Visconti, Geraldina (Department: 1722)

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

C252S299010, C430S020000, C430S270100, C349S117000, C349S182000, C428S001100

Reexamination Certificate

active

07910021

ABSTRACT:
A polymerizable optically active compound of formula (1) has high helical twisting power. When added to a liquid crystal (LC) composition it achieves required helical pitch without largely impairing the physical and optical properties of the LC composition. The compound is suited to be compounded with a LC material, particularly a cholesteric LC material for making an optically anisotropic element excellent in heat resistance, solvent resistance, transparency, optical characteristics, and LC alignment fixing ability. The compound is also useful to form a LC alignment layer, a LC alignment controlling agent, a coating material, a protective film, etc.X1and X2each represent a (meth)acryloyloxy group; Y1and Y2each represent a single bond, an optionally branched C1-8alkylene group, an ether linkage, a thioether linkage, —COO—, —OCO—, —OCO—O—, —S—CO—, —CO—S—, an optionally substituted 6-membered ring, an optionally substituted naphthalene ring, or a combination thereof.

REFERENCES:
patent: 5476749 (1995-12-01), Steinmann et al.
patent: 6335462 (2002-01-01), Etzbach et al.
patent: 6830788 (2004-12-01), Morita et al.
patent: 2003/0224175 (2003-12-01), Morita et al.
patent: 0 399 279 (1990-11-01), None
patent: 2-305888 (1990-12-01), None
patent: 3-072445 (1991-03-01), None
patent: 4-317025 (1992-11-01), None
patent: 5-224412 (1993-09-01), None
patent: 9-506088 (1997-06-01), None
patent: 2001-505879 (2001-05-01), None
patent: 2002-179633 (2002-06-01), None
patent: 2003-055661 (2003-02-01), None
patent: 2003-137887 (2003-05-01), None
patent: 2003-315553 (2003-11-01), None
patent: 2004-137281 (2004-05-01), None
patent: 2005-281222 (2005-10-01), None
patent: 2005-281223 (2005-10-01), None
International Search Report, PCT/JP2007/074386, Apr. 1, 2008.

Affiliated with

Also associated with

Rating

Polymerizable optical active compound and polymerizable... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polymerizable optical active compound and polymerizable..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polymerizable optical active compound and polymerizable... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2661725