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:
Dec. 13, 1977
Filed:
Aug. 30, 1976
Applicant:
Inventors:
Assignee:
Hoffmann-La Roche Inc., Nutley, NJ (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ; C02F / ; C07D / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
252299 ; 2602 / ; 260463 ; 2604 / ; 2604 / ; 350150 ; 3501 / ;
Abstract
Compounds of the formula ##STR1## wherein when X is nitrogen, Y and Z are --CH--; or when Y is nitrogen, X and Z are --CH--; or when Z is nitrogen, X and Y are --CH--; and one of R.sub.1 and R.sub.2 is cyano and the other is straight-chain alkyl of 1 to 7 carbon atoms, straight-chain alkoxy of 1 to 7 carbon atoms or straight-chain alkanoyloxy of 2 to 7 carbon atoms, Prepared by a variety of methods, are described. The compounds of the invention are useful as components of nematic mixtures.