A liquid crystal composition which prevents production of an alignment defect of a liquid crystal compound and also has excellent storage stability during dissolution in a solvent is provided. The liquid crystal composition is suitable for constituting a retardation film capable of favorable circular polarization conversion. The liquid crystal composition includes a polymerizable liquid crystal compound having 3 or more ring structures in the main chain, and aluminum. A content of the aluminum is 1 ppm or more and 170 ppm or less relative to the polymerizable liquid crystal compound.
A liquid crystal composition which prevents production of an alignment defect of a liquid crystal compound and also has excellent storage stability during dissolution in a solvent is provided. The liquid crystal composition is suitable for constituting a retardation film capable of favorable circular polarization conversion. The liquid crystal composition includes a polymerizable liquid crystal compound having 3 or more ring structures in the main chain, and aluminum. A content of the aluminum is 1 ppm or more and 170 ppm or less relative to the polymerizable liquid crystal compound.
Liquid crystal composition, method of producing the same, and retardation film constituted from the same
申请人:Sumitomo Chemical Company, Limited
公开号:US11193065B2
公开(公告)日:2021-12-07
A liquid crystal composition is provided containing a polymerizable liquid crystal compound, the composition having high preservation stability when dissolved in a solvent and also having the ability to restrain the development of orientation defects of the liquid crystal compound. A method of producing such a liquid crystal composition is also provided with ease. The liquid crystal composition includes a first polymerizable liquid crystal compound having five or more ring structures on its principal chain and represented by the following formula (A) and a second polymerizable liquid crystal compound having five or more ring structures and represented by the following formula (B).
Polymer Compound, Polymer Thin Film and Polymer Thin Film Device Using the Same
申请人:Ueda Masato
公开号:US20080003422A1
公开(公告)日:2008-01-03
A polymer compound comprising a repeating unit of the following formula (1) and a repeating unit of the following formula (2) and having a polystyrene-reduced number-average molecular weight of 10
3
to 10
8
:
(wherein, Ar
1
and Ar
2
represent each independently a tri-valent aromatic hydrocarbon group or a tri-valent heterocyclic group, X
1
and X
2
represent each independently O, S, C(═O), S(═O), SO
2
or the like, and X
1
and X
2
are not identical. Y represents O, S, and R
9
represents a halogen atom, alkyl group, alkyloxy group or the like. m represents 0 or 1, and n represents an integer from 1 to 6. o represents an integer from 1 to 6, and p represents an integer from 0 to 2.).