| 摘要 |
The present invention is to provide an antioxidant for liquid crystal composition which contains one or more kinds of liquid crystal compounds having a positive dielectric anisotropy of 4 or more as an absolute value at 3% or more and is represented by Formula (II-1);;(in the Formula (II-1), My represents a hydrocarbon having from 1 to 25 carbon atoms, a 1,4-phenylene group, or a trans-1,4-cyclohexylene group, Xy represent an alkylene group having from 1 to 15 carbon atoms, —OCH2—, —CH2O—, —COO—, —OCO—, —CF2O—, —OCF2—, —CF2CF2—, —CH═CH—COO—, —CH═CH—OCO—, —COO—CH═CH—, —OCO—CH═CH—, —CH═CH—, —C≡C—, a singlebond, a 1,4-phenylene group, or a trans-1,4-cyclohexylene group, and l represents an integer from 2 to 6), a liquid crystal composition containing the antioxidant, and a liquid crystal display device using the liquid crystal composition. |
| 主权项 |
1. An antioxidant for liquid crystal composition comprising one or more kinds of liquid crystal compounds having a positive dielectric anisotropy of 4 or more as an absolute value at 3% or more, wherein
the antioxidant for liquid crystal composition is used in a liquid crystal composition, and the antioxidant for liquid crystal composition is represented by Formula (II-1): (in Formula (II-1), My represents a hydrocarbon having from 1 to 25 carbon atoms (one or two or more —CH2— in the hydrocarbon may be substituted with —O—, —CO—, —COO—, or —OCO— so as not to be directly adjacent to an oxygen atom), a 1,4-phenylene group, or a trans-1,4-cyclohexylene group, wherein an arbitrary hydrogen atom in the 1,4-phenylene group may be substituted with a fluorine atom, Xy's may be the same as or different from one another and represent an alkylene group having from 1 to 15 carbon atoms (one or two or more —CH2— in the alkylene group may be substituted with —O—, —CO—, —COO—, or —OCO— so as not to be directly adjacent to an oxygen atom), —OCH2—, —CH2O—, —COO—, —OCO—, —CF2O—, —OCF2—, —CF2CF2—, —CH═CH—COO—, —CH═CH—OCO—, —COO—CH═CH—, —OCO—CH═CH—, —CH═CH—, —C≡C—, a single bond, a 1,4-phenylene group, or a trans-1,4-cyclohexylene group, wherein an arbitrary hydrogen atom in the 1,4-phenylene group may be substituted with a fluorine atom, and l represents an integer from 2 to 6). |
