Near infrared absorber, preparation process therefor and use thereof
First Claim
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1. A phthalocyanine near infrared absorber having a broad absorption range in the near infrared region and represented by the following formula (1):
- ##STR27## wherein R1 and R2 each independently represents a hydrogen atom, a C1-20 alkyl group a C6-20 aryl group;
Ys each independently represents a C1-20 alkyl group, a C6-20 aryl group, a C1-20 alkoxy group, or a C6-20 aryloxy group;
m stands for an integer of 0 to 4;
Pc represents a phthalocyanine nucleus;
Z represents an --SH group or an --NHR3 group in which R3 represents a hydrogen atom, a C1-20 alkyl group or a C6-20 aryl group;
Xs each independently represents a halogen atom, a hydroxy group, a C1-20 alkoxy group, a C6-20 aryloxy group, a C1-20 alkylthio group, a C6-20 arylthio group, a C1-20 alkylamino group, a C6-20 arylamino group and a C7-20 alkylarylamino group;
the adjacent pairs of Xs may form a 5- or 6-membered ring via two hetero atoms;
M represents a divalent metal atom, a monosubstituted trivalent, a disubstituted tetravalent metal or an oxymetal atom;
p stands for an integer of 1 to 16;
q stands for an integer of 0 to 8;
r stand for an integer of 0 to 8; and
p+2q+r is not greater than 16.
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Abstract
A phthalocyanine near infrared absorber having a broad absorption range in the near infrared region and represented by the following formula (1): ##STR1## wherein each of the groups is defined.
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Citations
9 Claims
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1. A phthalocyanine near infrared absorber having a broad absorption range in the near infrared region and represented by the following formula (1):
- ##STR27## wherein R1 and R2 each independently represents a hydrogen atom, a C1-20 alkyl group a C6-20 aryl group;
Ys each independently represents a C1-20 alkyl group, a C6-20 aryl group, a C1-20 alkoxy group, or a C6-20 aryloxy group;
m stands for an integer of 0 to 4;
Pc represents a phthalocyanine nucleus;
Z represents an --SH group or an --NHR3 group in which R3 represents a hydrogen atom, a C1-20 alkyl group or a C6-20 aryl group;
Xs each independently represents a halogen atom, a hydroxy group, a C1-20 alkoxy group, a C6-20 aryloxy group, a C1-20 alkylthio group, a C6-20 arylthio group, a C1-20 alkylamino group, a C6-20 arylamino group and a C7-20 alkylarylamino group;
the adjacent pairs of Xs may form a 5- or 6-membered ring via two hetero atoms;
M represents a divalent metal atom, a monosubstituted trivalent, a disubstituted tetravalent metal or an oxymetal atom;
p stands for an integer of 1 to 16;
q stands for an integer of 0 to 8;
r stand for an integer of 0 to 8; and
p+2q+r is not greater than 16. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- ##STR27## wherein R1 and R2 each independently represents a hydrogen atom, a C1-20 alkyl group a C6-20 aryl group;
Specification