Composition, polarizer layer, laminate, and image displaying device
Provided is a composition that is capable of forming a polarizer layer having an excellent degree of alignment and excellent adhesiveness to another layer in a case of being applied to a laminate, a polarizer layer, a laminate, and an image display device. The composition of the present invention is a composition including at least a polymer liquid crystal compound, a dichroic material, and a low-molecular-weight liquid crystal compound, in which the polymer liquid crystal compound is a copolymer having a repeating unit (1) represented by Formula (1), the low-molecular-weight liquid crystal compound is a compound represented by Formula (LC), and relationships represented by Expressions |log P(SP1)−log P(SPL1)|≤2.0 (11), |log P(MG1)−log P(SP1)|≥4.5 (12), and |log P(ML)−log P(SPL1)|≥4.0 (13) are satisfied.
1 . A composition comprising:
at least a polymer liquid crystal compound;
a dichroic material;
a low-molecular-weight liquid crystal compound; and
a polymer interface improver,
wherein the polymer liquid crystal compound is a copolymer having a repeating unit (1) represented by Formula (1) and a repeating unit (4) represented by Formula (4),
the low-molecular-weight liquid crystal compound is a compound represented by Formula (LC), and
relationships represented by Expressions (11) to (13) and (20) to (21) are satisfied,
in Formula (1), PC1 represents a main chain of the repeating unit represented by the Formula (P1-A), L1 represents a single bond or a divalent linking group, SP1 represents a spacer group, MG1 represents a mesogen group, and T1 represents a terminal group,
in Formula (P1-A), “*” represents a bonding position with respect to L1 in Formula (1), and R 11 represent a hydrogen atom, a halogen atom, a cyano group, an alkyl group having 1 to 10 carbon atoms, or an alkoxy group having 1 to 10 carbon atoms,
in Formula (LC), SPL1 and SPL2 each independently represent a spacer group, ML represents a mesogen group, Q1 and Q2 each independently represent a crosslinkable group or a terminal group, and at least one of Q1 or Q2 represents a crosslinkable group,
in Formula (4), PC4 represents a main chain of the repeating unit, L4 represents a single bond or a divalent linking group, SP4 represents a spacer group, T4 represents a crosslinkable group, and the number of atoms in a main chain of SP4 in Formula (4) is 31 or more and 70 or less,
|log P ( SP 1)−log P ( SPL 1)|≤2.0 (11)
|log P ( MG 1)−log P ( SP 1)|≥4.5 (12)
|log P ( ML )−log P ( SPL 1)|≥4.0 (13)
in Formulae (11) to (13), log P(SP1) represents a log P value of SP1 in Formula (1), log P(MG1) represents a log P value of MG1 in Formula (1), log P(SPL1) represents a log P value of SPL1 in Formula (LC), and log P(ML) represents a log P value of ML in Formula (LC),
D ( SPL 1)≥ D ( SPL 2) (20)
| D ( SP 1)− D ( SPL 1)|≤4.0Å (21)
in Expressions (20) and (21), D(SPL1) represents a molecular length of SPL1 in Formula (LC), D(SPL2) represents a molecular length of SPL2 in Formula (LC), and D(SP1) represents a molecular length of SP1 in Formula (1).
2 . A composition comprising:
at least a polymer liquid crystal compound;
a dichroic material;
a low-molecular-weight liquid crystal compound; and
a polymer interface improver,
wherein the polymer liquid crystal compound is a copolymer having a repeating unit (1) represented by Formula (1) and a repeating unit (4) represented by Formula (4),
the low-molecular-weight liquid crystal compound is a compound represented by Formula (LC), and
relationships represented by Expressions (11) to (13) and (20) to (41′) are satisfied,
in Formula (1), PC1 represents a main chain of the repeating unit represented by the Formula (P1-A), L1 represents a single bond or a divalent linking group, SP1 represents a spacer group, MG1 represents a mesogen group, and T1 represents a terminal group,
in Formula (P1-A), “*” represents a bonding position with respect to L1 in Formula (1), and R 11 represent a hydrogen atom, a halogen atom, a cyano group, an alkyl group having 1 to 10 carbon atoms, or an alkoxy group having 1 to 10 carbon atoms,
in Formula (LC), SPL1 and SPL2 each independently represent a spacer group, ML represents a mesogen group, Q1 and Q2 each independently represent a crosslinkable group or a terminal group, and at least one of Q1 or Q2 represents a crosslinkable group,
in Formula (4), PC4 represents a main chain of the repeating unit, L4 represents a single bond or a divalent linking group, SP4 represents a spacer group, T4 represents a crosslinkable group, and the number of atoms in a main chain of SP4 in Formula (4) is 31 or more and 70 or less,
|log P ( SP 1)−log P ( SPL 1)|≤2.0 (11)
|log P ( MG 1)−log P ( SP 1)|≥4.5 (12)
|log P ( ML )−log P ( SPL 1)|≥4.0 (13)
in Formulae (11) to (13), log P(SP1) represents a log P value of SP1 in Formula (1), log P(MG1) represents a log P value of MG1 in Formula (1), log P(SPL1) represents a log P value of SPL1 in Formula (LC), and log P(ML) represents a log P value of ML in Formula (LC),
D ( SPL 1)≥ D ( SPL 2) (20)
D ( SPL 2)≤4.0Å (41′)
in Expressions (20) and (41′), D(SPL1) represents a molecular length of SPL1 in Formula (LC), and D(SPL2) represents a molecular length of SPL2 in Formula (LC).
3 . The composition according to claim 1 , wherein a relationship represented by Expression (31) is satisfied,
log P ( SPL 2)≤1.5 (31)
where in Formula (31), log P(SPL2) represents a log P value of SPL2 in Formula (LC).
4 . The composition according to claim 1 ,
wherein a content of the repeating unit (4) is 10% by mass or greater with respect to all repeating units of the polymer liquid crystal compound.
5 . The composition according to claim 1 ,
wherein SP1 in Formula (1) has an oxyethylene structure.
6 . A polarizer layer which is formed of the composition according to claim 1 .
7 . A laminate comprising:
a base material; and
the polarizer layer according to claim 6 provided on the base material.
8 . The laminate according to claim 7 , further comprising:
an alignment layer which contains a polymer having a repeating unit that contains a crosslinkable group, on the base material,
wherein a content of the repeating unit that contains the crosslinkable group is 20% by mass or greater with respect to all repeating units of the polymer.
9 . The laminate according to claim 8 ,
wherein the polymer further has a repeating unit having a partial structure represented by Formula (PA),
in Formula (PA), two symbols “*” represent a bonding position, and R P1 to R P4 each independently represent a hydrogen atom or a substituent.
10 . The laminate according to claim 7 , further comprising:
a refractive index adjusting layer on the polarizer layer.
11 . The laminate according to claim 7 ,
wherein the laminate has a haze of 0.2% to 1.5%.
12 . A laminate comprising:
the polarizer layer according to claim 6 ; and
a layer containing an ultraviolet absorbing agent.
13 . The laminate according to claim 7 , further comprising:
a λ/4 plate.
14 . The laminate according to claim 13 , further comprising:
a glass substrate on a side of the polarizer layer opposite to a surface where the λ/4 plate is provided,
wherein in a case where the laminate includes the base material, the base material is the glass substrate.
15 . The laminate according to claim 13 , further comprising:
a barrier layer on a side of the polarizer layer opposite to the surface where the λ/4 plate is provided.
16 . An image display device comprising:
the polarizer layer according to claim 6 .
17 . An image display device comprising:
the laminate according to claim 7 .