Liquid crystal materials

• US 3,965,029 A
• Filed: 02/04/1974
• Issued: 06/22/1976
• Est. Priority Date: 02/04/1974
• Status: Expired due to Term

• Current Assignee: Kent State University
• Original Assignee: Kent State University
• Inventors: Arora, Sardari L.
• Primary Examiner(s): Padgett, Benjamin R.
• Assistant Examiner(s): Gron, T. S.
• Application Number:
  US05/439,046
• Time in Patent Office: 869 Days
• Field of Search: 252/299, 252/408 LC, 350/160 LC, 350/150, 428/1
• US Class Current: 252/299.5
• CPC Class Codes: C09K 19/22 linked by a chain containing carbon and nitrogen atoms as chain links, e.g. Schiff bases

Abstract

Disclosed are alkoxybenzalmethylphenylenediamines and methylbenzalbutylaniline as liquid crystal materials, and eutectic mixtures of these as long life liquid crystal materials.

Claims

1. A liquid crystal material comprising a mixture of at least one Bis-(4'"'"'-n-alkoxybenzal) - 2-methyl-1, 4-phenylenediamine and 4-methylbenzal-4'"'"'-n-butylaniline.

2. The liquid crystal material of claim 1 in which the alkoxy is octyloxy.

3. The liquid crystal material of claim 1 in which the alkoxy is nonyloxy.

4. The liquid crystal material of claim 1 in which the alkoxy is decyloxy.

5. The liquid crystal material of claim 1 in which the alkoxy is dodecyloxy.

6. A liquid crystal material comprising a mixture of about one mol Bis-(4'"'"'-octyloxybenzal)-2-methyl-1,4-phenylenediamine and about five mols 4-methylbenzal-4'"'"'-n-butylaniline.