Patent number: 9102652
Abstract: A naphthopyran compound represented by the formula B1 and B2 are selected independently from the group consisting of a phenyl, naphthyl, or heterocyclic aromatic group, or may combine to form one or more aromatic rings. B1 and B2 may further include one or more substituents. R3, R4, R5, R6, and R10 are selected independently from the group consisting of hydrogen, halogen, —Ra, —OH, —ORa, —O—CO—Ra, —CN, —NO2, —SO2Ra, —SORa, —SH, —SRa, —NH2, —NHRa, —NRaRa, or —NRbRc; or wherein R5 and R6 combine to form a cyclic group. Ra may include an alkyl, polycycloalkyl, alkenyl, polyalkenyl, haloalkyl, perhaloalkyl, alkynyl, polyalkynyl, hydroxyalkynyl, polyhydroxyalkynyl; or (C3-20)cycloalkyl group. Rb and Rc may include hydrogen or alkyl groups, or may combine to form a saturated heterocyclic group, or together with an adjacent phenyl group may form a julolidinyl group. R7 is a mesogenic group.
Type:
Grant
Filed:
March 17, 2014
Date of Patent:
August 11, 2015
Assignee:
ALPHAMICRON INCORPORATED
Inventors:
Ludmila Sukhomlinova, Linli Su, Tamas Kosa, Bahman Taheri