Patent · US Expired

Ethyne derivatives as a component of liquid crystal phases

US5068053A · kind A · utility

19Cited by

4References

6Claims

0Family size

Assignee

Merck Patent GmbH · DE

Inventors

Volker Reiffenrath · Roßdorf, DE
Eike Poetsch · Mühltal, DE
Joachim Krause · Dieburg, DE
Georg Weber · Langen (Hessen), DE

Key dates

Filing date	Nov 25, 1988
Grant date	Nov 26, 1991
Priority date	—
Expiry date	Nov 25, 2008

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K19/3461
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Ethyne derivatives of the formula I EQU R.sup.1 --(A.sup.1 --Z.sup.1).sub.m --A.sup.3 --C.tbd.C--A.sup.4 -(Z.sup.2 -A.sup.2).sub.n --R.sup.2 I wherein R.sup.1, A.sup.1, Z.sup.1 m, A.sup.3, A.sup.4, Z.sup.2, A.sup.2, n and R.sup.2 have the meaning given in claim 1 are suitable as components of liquid crystal phases.

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