Ga-naphthalocyanine chromophores with short chain alkoxy axial substituents

Patent metadata

Field	Value
Publication number	US-10557047-B2
Application number	US-201515307964-A
Country	US
Kind code	B2
Filing date	Apr 30, 2015
Priority date	May 5, 2014
Publication date	Feb 11, 2020
Grant date	Feb 11, 2020

Abstract

The present invention relates to specific Ga-naphthalocyanine chromophores with short chain alkoxy axial substituents, their use as almost colourless IR absorbers, for optical filter applications; especially for plasma display panels, or for laser welding of plastics. The compounds may be used in compositions for inks, paints and plastics, especially in a wide variety of printing systems and are particularly well-suited for security applications.

First claim

The invention claimed is:

1. A printing ink formulation, comprising:
at least one compound of the formula (I)

wherein R is C 1 -C 6 alkyl.

2. The printing ink formulation according to claim 1 , comprising
a) 0.0001 to 25% by weight of at least one compound of the formula (I),
b) 5 to 74% by weight of at least one polymeric binder,
c) 1 to 94.9999% by weight of at least one solvent,
d) 0 to 25% by weight of at least one colorant, and
e) 0 to 25% by weight of at least one further additive,
wherein the sum of components a) to e) adds up to 100%.

3. A process for the manufacture of a security document, the process comprising:
printing on a substrate the printing ink formulation according to claim 1 .

4. A security document, comprising:
a substrate; and obtainable by printing the printing ink formulation according to claim 1 on the substrate.

5. The security document according to claim 4 , which is in the form of a bank note, a passport, a check, a voucher, an ID- or transaction card, a stamp, or a tax label.

6. A method for filtering IR radiation, the method comprising:
irradiating the printing ink formulation according to claim 1 ,
wherein said printing ink formulation is present in an optical filter, a plasma display panel, or a polymer.

7. A method of detecting an IR-absorbing composition, the method comprising:
printing on a substrate the printing ink formulation according to claim 1 , and irradiating the substrate having present thereon an IR-absorbing.

8. A method of bonding a printing ink formulation to a substrate, the method comprising:
depositing the printing ink formulation according to claim 1 onto a substrate.

9. The printing ink formulation according to claim 1 , wherein R is C 1 -C 5 alkyl.

10. The printing ink formulation according to claim 1 , wherein R is ethyl, propyl or butyl.

11. The security document according to claim 4 , wherein R is C 1 -C 5 alkyl.

12. The security document according to claim 4 , wherein R is ethyl, propyl or butyl.

13. The method for filtering IR radiation according to claim 6 , wherein R is C 1 -C 5 alkyl.

14. The method for filtering IR radiation according to claim 6 , wherein R is ethyl, propyl or butyl.

15. The method of detecting an IR-absorbing composition according to claim 7 , wherein R is C 1 -C 5 alkyl.

16. The method of detecting an IR-absorbing composition according to claim 7 , wherein R is ethyl, propyl or butyl.

17. The method of bonding a printing ink formulation to a substrate according to claim 8 , wherein R is C 1 -C 5 alkyl.

18. The method of bonding a printing ink formulation to a substrate according to claim 8 , wherein R is ethyl, propyl or butyl.

19. The printing ink formulation according to claim 1 , further comprising:
a polymeric binder,
a solvent,
optionally at least one colorant, and
optionally at least one further additive.

Assignees

• Basf Se

Inventors

• Reichert Hans
• Bron Yves
• Reichelt Helmut
• Schiller Marina

Classifications

• C09B47/045

  Special non-pigmentary uses, e.g. catalyst, photosensitisers of phthalocyanine dyes or pigments · CPC title

• C09D11/322

  Pigment inks · CPC title

• C07D487/22 Primary

  in which the condensed system contains four or more hetero rings · CPC title

• C09B47/04

  Phthalocyanines {abbreviation: Pc} · CPC title

• C09D11/037 Primary

  characterised by the pigment · CPC title