Patent · US Expired

Phenyl-pyrimidine liquid crystal materials

US5128061A · kind A · utility

5Cited by
23References
16Claims
0Family size

Assignee

Inventor

Key dates

Filing dateAug 14, 1990
Grant dateJul 7, 1992
Priority date
Expiry dateAug 14, 2010

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC09K19/3469
  • WIPO fieldBasic materials chemistry
  • WIPO sectorChemistry

Abstract

Substituted-hydrocarbylthio phenyl-pyrimidines are disclosed which exhibit smectic A phases over a wide temperature range and are useful in formulating smectic A compositions. The liquid-crystal compositions formulated utilizing the smectic A compounds of the present invention have particular application in smectic cells such as laser smectic liquid-crystal light valves and optical limiters used in high performance environments.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.