| 主权项 |
1. A polymerizable liquid crystal composition comprising a mixture of polymerizable compounds containing at least one compound selected from a group of compounds represented by the formula (1-1) as a component A, at least one compound selected from a group of compounds represented by the formula (2-1) as a component B, at least one compound selected from a group of compounds represented by the formulae (3-2) and (3-3) as a component C and optionally at least one compound selected from a group of compounds represented by the formula (4-1) as a component D, and at least a nonionic surfactant as a component E, wherein a birefringence (Δn) of a liquid crystal film obtained by polymerizing the polymerizable liquid crystal composition is in a range of 0.10 to 0.13:wherein
in the formula (1-1), ring T represents triptycen-1,4-diyl; Z1 independently represents hydrogen, fluorine, chlorine, methyl or trifluoromethyl; W1 independently represents hydrogen, halogen, alkyl having from 1 to 3 carbon atoms or fluoroalkyl having from 1 to 3 carbon atoms; Y1 independently represents a single bond, —COO—, —OCO—, —CH═CH—COO—, —OCO—CH═CH—, —(CH2)2—COO— or —OCO—(CH2)2—; and n1 independently represents an integer of from 2 to 15, in the formula (2-1), Z2 independently represents hydrogen, fluorine, methyl or trifluoromethyl; W2 independently represents hydrogen, halogen, alkyl having from 1 to 3 carbon atoms or fluoroalkyl having from 1 to 3 carbon atoms; Y2 independently represents a single bond, —CH═CH— or —(CH2)2—; and n2 independently represents an integer of from 2 to 15, in the formulae (3-2) and (3-3), Z3 independently represents hydrogen, fluorine, methyl or trifluoromethyl; W3 independently represents hydrogen, halogen, alkyl having from 1 to 3 carbon atoms or fluoroalkyl having from 1 to 3 carbon atoms; W32 independently represents hydrogen, halogen, alkyl having from 1 to 8 carbon atoms or fluoroalkyl having from 1 to 8 carbon atoms; ring A3 independently represents 1,4-phenylene or 1,4-cyclohexylene; X3 independently represents a single bond, —COO—, —OCO—, —CH═CH—COO—, —OCO—CH═CH—, —(CH2)2—COO—, —OCO—(CH2)2—, —(CH2)2—, —C≡C—, —CH2O— or —OCH2—; Y3 independently represents a single bond, alkylene having from 1 to 20 carbon atoms, —O—, —COO—, —OCO— or —OCOO—; r represents 0 or 1; and n3 independently represents an integer of from 0 to 20, provided that when n3 is 0, Y3 represents a single bond or alkylene having from 1 to 20 carbon atoms, in the formula (4-1), Z4 represents hydrogen, fluorine, methyl or trifluoromethyl; W4 independently represents hydrogen, halogen, alkyl having from 1 to 3 carbon atoms or fluoroalkyl having from 1 to 3 carbon atoms; X4 represents a single bond, —O—, alkylene having from 1 to 20 carbon atoms, —COO— or —OCO—; ring A4 independently represents 1,4-phenylene or 1,4-cyclohexylene; R4 represents hydrogen, fluorine, chlorine, cyano, alkyl having from 1 to 20 carbon atoms or alkoxy having from 1 to 20 carbon atoms, in which in the alkyl and the alkoxy, arbitrary hydrogen may be replaced by halogen; n4 represents an integer of from 0 to 20; and p and q each independently represent 0 or 1, provided that when n4 is 0, X4 represents a single bond or alkylene having from 1 to 20 carbon atoms, and in the formula (2-1), A2 represents a divalent group represented by one of the formulae (A2-10), (A2-11) and (A2-16) |
