Method for producing liquid crystal composition
The present invention provides a method for producing a liquid crystal composition which mixes two or more liquid crystal compounds, namely, a method for producing a liquid crystal composition, including conducting agitation or ultrasonic irradiation of two or more liquid crystal compounds without applying external heat, wherein at least one of the liquid crystal compounds has a melting point higher than 40° C., and a temperature at a start of the agitation or ultrasonic irradiation is not more than 40° C. The production method of the present invention enables a highly reliable, high-quality liquid crystal composition to be produced without the necessity for large-scale equipment such as a pressure reduction apparatus or heating apparatus. Accordingly, this method is extremely practical for the production of liquid crystal compositions that require a high level of reliability.
1. A method for producing a liquid crystal composition, comprising
conducting agitation or ultrasonic irradiation of two or more liquid crystal compounds without applying external heat, wherein
at least one of the liquid crystal compounds has a melting point higher than 40° C., and
the temperature at the start of the agitation or ultrasonic irradiation is not more than 40° C.
2. A method for producing a liquid crystal composition according to claim 1 , wherein at least two of the liquid crystal compounds have a melting point higher than 40° C.
3. A method for producing a liquid crystal composition according to claim 1 , wherein a proportion of compounds that have a melting point higher than 40° C. is at least 60%.
4. A method for producing a liquid crystal composition according to claim 1 , wherein the temperature at the start of the agitation or ultrasonic irradiation is not less than 15° C. and not more than 40° C.
5. A method for producing a liquid crystal composition according to claim 1 , wherein the time of the agitation or ultrasonic irradiation is not more than 5 hours.
6. A method for producing a liquid crystal composition according to claim 1 , wherein the agitation or ultrasonic irradiation is conducted under an atmosphere of an inert gas.
7. A method for producing a liquid crystal composition according to claim 1 , wherein the agitation is conducted using a planetary mixing device, vibrator, lab mixer, stirring propeller, shaker or rotary evaporator.
8. A method for producing a liquid crystal composition according to claim 1 , wherein the ultrasonic irradiation is conducted using an ultrasonic irradiation device.
9. A method for producing a liquid crystal composition according to claim 7 , wherein the agitation is conducted using the planetary mixing device.