US 8,568,839 B2Granted

Liquid crystal composition and retardation film

AssigneeFUJIFILM Corporation

InventorsHiroshi Takeuchi, Mitsuyoshi Ichihashi, Ryo Hamasaki

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Abstract

The invention relates to a liquid crystal composition comprising two or more species of liquid crystal compounds respectively having a polymerizable group, at least one species of which being a compound represented by formula (I) below, having a content of the compound of from 20% to 80% relative to the total mass of said two or more species of liquid crystal compounds. In formula (I), P1 represents a polymerizable group; each of L1 and L2 represents a divalent spacer group; each of Z1 to Z4 represents a divalent linking group; each of A1 and A2 represents a divalent cyclic group; each of m and n represents an integer from 0 to 3; MA represents any one group of A-I to A-V below:

Claims16

Dependent claims

A retardation film comprising a liquid crystal composition comprising two or more species of liquid crystal compounds respectively having a polymerizable group, at least one species of which being a compound represented by formula (I) below, having a content of the compound represented by the formula (I) of from 20% by mass to 80% by mass relative to the total mass of said two or more species of liquid crystal compounds:

P1-L1-(Z1-A1)m-Z3-MA-Z4-(A2-Z2)n-L2-R0 Formula (I)
where, P1 represents a polymerizable group;
each of L1 and L2 independently represents a divalent spacer group;
each of Z1 to Z4 independently represents a divalent linking group;
each of A1 and A2 independently represents a divalent cyclic group;
each of m and n independently represents an integer from 0 to 3;
R0 represents a hydrogen atom or substituent;
MA represents any one group selected from the group consisting of M-1, M-5, M-6, M-8, M-9 and M-11 below:

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/569,225Filed 29 Sep 2009
Priority: JP 2008-25293030 Sep 2008
Published: US 2010/0078593 A11 Apr 2010
Granted: 29 Oct 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

C09K 19/32
Non-steroidal liquid crystal compounds: containing condensed ring systems, i.e. fused, bridged or spiro ring systems
C09K 19/2007
Linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters or ethers: the chain containing -COO- or -OCO- groups
C09K 19/3066
Cyclohexane rings: in which the rings are linked by a chain containing carbon and oxygen atoms, e.g. esters or ethers
C09K 19/322
Containing condensed ring systems, i.e. fused, bridged or spiro ring systems: compounds containing a naphthalene ring or a completely or partially…

Family

US 2010/0078593 A1Pre-grant publication · published 1 Apr 2010
US 8,568,839 B2This patent

From the US filing history. Foreign family members aren’t listed.

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