申请人:Sukhomlinova Ludmila
                            
                            
                                公开号:US20100324296A1
                            
                            
                                公开(公告)日:2010-12-23
                            
                            A naphthopyran compound represented by the formula
B
1
and B
2
may include a phenyl, naphthyl, or heterocyclic aromatic group, or may combine to form one or more aromatic rings. B
1
and B
2
may further include one or more substituents. R
a
may include an alkyl, polycycloalkyl, alkenyl, polyalkenyl, haloalkyl, perhaloalkyl, alkynyl, polyalkynyl, hydroxyalkynyl, polyhydroxyalkynyl; or (C
3-20
)cycloalkyl group. R
b
and R
c
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. R
3
, R
4
, R
5
, R
6
, and R
10
may include hydrogen, halogen, —R
a
, —OH, —OR
a
, —O—CO—R
a
, —CN, —NO
2
, —SO
2
R
a
, —SOR
a
, —SH, —SR
a
, —NH
2
, —NHR
a
, —NR
a
R
a
, or —NR
b
R
c
; or any two or more may combine to form a cyclic group. R
7
is a mesogenic group. And the naphthopyran, which may be referred to as a dichroic-photochromic compound, may be incorporated into an optical article.