摘要:
A method of preparing a sultine of formula (V) from a dihalogeno compound of formula (IV) is provided. The method comprises reacting the dihalogeno compound (IV) with a hydroxymethanesulfinate salt in a DMSO solvent,wherein: R1, R2, R3 and R4 are each independently selected from hydrogen, hydroxyl, C1-20alkyl, C1-20alkoxy, amino, C1-20alkylamino, di(C1-20alkyl)amino, halogen, cyano, thiol, C1-20alkylthio, nitro, C1-20alkylcarboxy, C1-20alkylcarbonyl, C1-20alkoxycarbonyl, C1-20alkylcarbonyloxy, C1-20alkylcarbonylamino, C5-20aryl, C5-20arylalkyl, C5-20arylalkoxy, C5-20heteroaryl, C5-20heteroaryloxy, C5-20heteroarylalkoxy or C5-20heteroarylalkyl; and X is Cl, Br or I.
摘要:
There is provided an aqueous formulation comprising an IR-absorbing naphthalocyanine dye of formula (II): or a salt form thereof, wherein: M is Ga(A1); A1 is an axial ligand selected from —OH, halogen, —OR3, —OC(O)R4 or —O(CH2CH2O)eRe wherein e is an integer from 2 to 10 and Re is H, C1-8 alkyl or C(O)C1-8 alkyl; R1 and R2 may be the same or different and are selected from hydrogen or C1-12 alkoxy; R3 is selected from C1-12 alkyl, C5-12 aryl, C5-12 arylalkyl or Si(Rx)(Ry)(Rz); R4 is selected from C1-12 alkyl, C5-12 aryl or C5-12 arylalkyl; and Rx, Ry and Rz may be the same or different and are selected from C1-12 alkyl, C5-12 aryl, C5-12 arylalkyl, C1-12 alkoxy, C5-12 aryloxy or C5-12 arylalkoxy; The formulation has a pH in the range of 3.5 to 7 and is particularly suitable for use as an IR-absorbing inkjet ink, providing compatibility with known CMYK inks together with an optimally red-shifted λmax.
摘要:
An inkjet ink comprising an IR-absorbing dye. The dye is a metal-cyanine complex of formula (I): wherein Q1, Q2, Q3 and Q4 are the same or different and are independently selected from a C3-20 arylene group or a C3-20 heteroarylene group; M is selected from Ti(A1)(A2), Zr(A1)(A2), V(A1)(A2), Si(A1)(A2), Ge(A1)(A2), Ga(A1), Al(A1), Mn(A1), Fe(A1), Sn(A1)(A2), or Pb(A1)(A2); and A1 and A2 may be the same or different and are axial ligands of formula (IIIa) wherein: C1 represents a core unit having two or more branching positions; each P1 is independently selected from H, a hydrophilic moiety or a branched moiety; g1 is an integer from 2 to 8; q1 is 0 or an integer from 1 to 6; and each p1 is independently selected from 0 or an integer from 1 to 6.
摘要:
A method of preparing a sultine of formula (V) from a dihalogeno compound of formula (IV) is provided. The method comprises reacting the dihalogeno compound (IV) with a hydroxymethanesulfinate salt in a DMSO solvent,wherein: R1, R2, R3 and R4 are each independently selected from hydrogen, hydroxyl, C1-20alkyl, C1-20alkoxy, amino, C1-20alkylamino, di(C1-20alkyl)amino, halogen, cyano, thiol, C1-20alkylthio, nitro, C1-20alkylcarboxy, C1-20alkylcarbonyl, C1-20alkoxycarbonyl, C1-20alkylcarbonyloxy, C1-20alkylcarbonylamino, C5-20aryl, C5-20arylalkyl, C5-20arylalkoxy, C5-20heteroaryl, C5-20heteroaryloxy, C5-20heteroarylalkoxy or C5-20heteroarylalkyl; and X is Cl, Br or I.
摘要:
The present invention provides an IR-absorbing metal-cyanine dye, said metal having at least one axial ligand bound thereto, wherein said axial ligand comprises a moiety suitable for reducing intermolecular interactions between adjacent dye molecules, thereby minimizing absorption of visible light.Dyes of this type are especially suitable for use in netpage and Hyperlabel systems.
摘要:
A method of modulating a stability of a sulfonated dye, particularly its ozonefastness is provided. The method comprises providing a salt of the dye, wherein the salt comprises at least one organic cation selected from the group consisting of: a first organic cation having a positive charge delocalized between a nitrogen atom and at least one other heteroatom; a second organic cation having a positive charge delocalized between a nitrogen atom and at least two other atoms; and a third organic cation of formula (A): wherein: Rp, Rq and Rr are each independently selected from a C1-6 alkyl group; s is 0, 1, 2 or 3; and Ar is a C6-12 aryl group or C3-12 heteroaryl group.
摘要:
A method of formulating an aqueous ink having minimal visible coloration. The method includes the steps of: providing an aqueous ink formulation containing a sulfonated water-soluble IR-absorbing naphthalocyanine dye having a central metal atom moiety; and adjusting a pH of the formulation to a pH value in the range of 4 to 6.5 so as to minimize visible coloration of the formulation.
摘要:
An aqueous formulation comprises a sulfonated water-soluble IR-absorbing naphthalocyanine dye having a central metal atom moiety. A pH of the formulation is in the range of 4 to 6.5, which minimizes visibility of the formulation.
摘要:
A method of effecting a one-pot conversion of a tetrahydronaphthalic anhydride of formula (I): to a nitrate salt of a benzisoindolenine of formula (II): The method comprises heating the tetrahydronaphthalic anhydride of formula (I) with a reagent mixture comprising ammonium nitrate so as to effecting concomitant dehydrogenation during the conversion.
摘要:
An IR-absorbing naphthalocyanine dye of formula (I): wherein M is Ga(A1); A1 is selected from the group consisting of: OH and halogen; and W is a sulfonic acid group or salts thereof.