The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 29, 1978
Filed:
Apr. 27, 1976
Applicant:
Inventors:
Assignee:
Thomson-CSF, Paris, FR;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C09K / ;
U.S. Cl.
CPC ...
252299 ; 2604 / ; 2605 / ; 2605 / ; 350350 ; 560 65 ;
Abstract
An organic compound having a high negative dielectric anisotropy is capable, by mixing with a nematic liquid crystal, of improving the dynamic scattering effect of the liquid crystal. The organic compounds have the formula: ##STR1## in which R is either a fluoro or a nitrile radical and wherein R.sub.1 and R.sub.2 are alkyl radicals. An excellent dynamic scattering effect is obtained by mixing the new organic compound even in a low proportion with a nematic liquid crystal.