NEAR-INFRARED-ABSORBING MATERIAL AND NEAR-INFRARED-ABSORBING FILTER
申请人:KIMURA Keizo
公开号:US20080073626A1
公开(公告)日:2008-03-27
The invention provides a near-infrared-absorbing material comprising at least one first compound selected from the group consisting of a singlet oxygen scavenger, a radical trapping agent and an antioxidant and at least one second compound represented by the following formula (II-1) or (II-2).
NEAR-INFRARED ABSORBING MATERIAL
申请人:Kimura Keizo
公开号:US20100224839A1
公开(公告)日:2010-09-09
The invention provides a near-infrared absorbing material, including: at least one of at least one singlet oxygen scavengers, at least one radical scavenger, and at least one antioxidant; and at least one near-infrared absorbing compound obtained by oxidation of a compound represented by the following Formula (II).
In the formula, R
211
, R
212
, R
221
, R
222
, R
231
, R
232
, R
241
and R
242
independently represent a hydrogen atom or an aliphatic or aromatic group; R
203
, R
213
, R
223
, R
233
and R
243
independently represent a substituent; and n
203
, n
213
, n
223
, n
233
and n
243
independently represent an integer of 0 to 4.
ULTRAVIOLET ABSORBENT COMPOSITION
申请人:Furuwaka Kazushi
公开号:US20110057155A1
公开(公告)日:2011-03-10
An ultraviolet absorbent composition, containing:
an ultraviolet absorbent A represented by formula (1);
an ultraviolet absorbent B represented by formula (2-a) or (2-b); and
a compound C, which is at least one kind of compound selected from the group consisting of a singlet oxygen scavenger, an antioxidant and a radical trapping agent:
wherein
R
a1
and R
a2
each independently represent a hydrogen atom or a specific substituent; R
a3
and R
a4
each independently represent a substituent having a Hammett substituent constant σp value of 0.2 or more; R
a5
to R
a7
each represent a hydrogen atom or a monovalent substituent;
X
1
and X
2
each independently represent a hydrogen atom or a specific substituent; s
1
and s
2
each independently represent an integer of 1 to 3; Lg represents a divalent substituent or a single bond; w represents 0 or 1; tb represents 1 or 2; and X
3
represents, when tb is 1, a hydrogen atom or a specific substituent; and when tb is 2, X
3
represents a divalent substituent.