摘要:
The present invention provides a method of producing a liquid crystalline coating liquid that substantially does not contain a fine crystal. The method of producing a liquid crystalline coating liquid of the present invention contains a heating step of heating a treatment liquid containing a lyotropic liquid crystalline compound containing an impurity, and a solvent, a depositing step of depositing a deposit by cooling the treatment liquid after the heating step to a temperature lower than 40° C., and a removing step of removing the deposit from the treatment liquid.
摘要:
A liquid-crystalline coating fluid which comprises: an azo compound represented by the following general formula (1); and a solvent to dissolve the azo compound: wherein R is an amino group, a cyano group, a hydroxyl group, a nitro group, a halogen group or a hydrogen atom; and M is a counterion.
摘要:
A liquid-crystalline coating fluid which comprises: an azo compound represented by the following general formula (1); and a solvent to dissolve the azo compound: wherein R is an amino group, a cyano group, a hydroxyl group, a nitro group, a halogen group or a hydrogen atom; and M is a counterion.
摘要:
It is possible to obtain a polarizing film having a high dichroic ratio by using a liquid-crystalline coating solution in which a small quantity of a second lyotropic liquid-crystalline low-molecular compound is mixed with a first lyotropic liquid-crystalline low-molecular compound. The second lyotropic liquid-crystalline low-molecular compound has a mole number smaller than the first lyotropic liquid-crystalline low-molecular compound. The molecular size of the second lyotropic liquid-crystalline low-molecular compound is smaller than that of the first lyotropic liquid-crystalline low-molecular compound.
摘要:
The present invention relates to a method for manufacturing a water resistant optically anisotropic film comprising: a water resistant treatment step of bringing an optically anisotropic film containing an organic dye having an anionic group into contact with a water resistant treatment liquid containing a multivalent metal salt or a compound having two or more nitrogen atoms in a molecule thereof; and a cleaning step of cleaning the optically anisotropic film after the water resistant treatment, using a cleaning liquid containing a hydrophilic organic compound.
摘要:
A method for producing a polarizing film, including: a dyeing step and a stretching step, a plurality of films being dipped into at least one processing liquid without contacting each other.
摘要:
A polarizing film is provided that prevents display unevenness and can form a liquid crystal display and an electroluminescence display that exhibit excellent display characteristics. The polarizing film is produced in the following manner. That is, a hydrophilic polymer film is conveyed by means of a guide roll so as to be impregnated in an aqueous solvent in a swelling bath and is allowed to swell. In this swelling step, at least a first guide roll is arranged in the swelling bath, and when the polymer film is impregnated in and allowed to travel in the aqueous solvent, the polymer film is brought into contact with the first guide roll within a time up to when swelling reaches a saturation state. Further, the polymer film is dyed using a dichroic substance and stretched.
摘要:
A liquid crystalline coating solution which comprises: an azo compound represented by the following general formula (I); and a solvent to dissolve the azo compound: wherein Q1 is a phenyl group or a naphthyl group (these groups may have any substituent groups); Q2 is a pheylene group or a naphtylene group (these groups may have any substituent groups); m is an integer from 1 to 5; and M is a counter ion.
摘要:
A process for the producing a coating fluid of the present invention comprises a step of adjusting a pH of the coating fluid by mixing ammonium hydroxide into an acid solution containing a lyotropic liquid crystal compound and a solvent. Further, a process for the producing an optically anisotropic film of the present invention comprises a step of obtaining an optically anisotropic film by casting the coating fluid produced by the aforementioned process for production of the coating fluid in a thin film state, followed by drying.
摘要:
The lyotropic liquid crystalline mixture of the present invention comprises at least a first azo compound and a second azo compound in relation of constitutional isomers wherein the first azo compound and the second azo compound are the constitutional isomers different in a binding site of at least an azo group. The first azo compound is preferably an azo compound wherein the azo group is bonded to an ortho-position of a hydroxyl group of an aminonaphthol skeleton. The second azo compound is preferably an azo compound wherein the azo group is bonded to an ortho-position of an amino group of an aminonaphthol skeleton.The lyotropic liquid crystalline mixture of the present invention may be utilized as a forming material of an optical anisotropic film, for example.