US 12,146,065 B2
Water-based ceramic dye
Piero Piccinelli, Bologna (IT)
Assigned to CEVP SAGL, Lugano (CH)
Appl. No. 17/431,026
Filed by CEVP SAGL, Lugano (CH)
PCT Filed Feb. 24, 2020, PCT No. PCT/EP2020/054770
§ 371(c)(1), (2) Date Aug. 13, 2021,
PCT Pub. No. WO2020/173875, PCT Pub. Date Sep. 3, 2020.
Claims priority of application No. 102019000002701 (IT), filed on Feb. 25, 2019.
Prior Publication US 2022/0135817 A1, May 5, 2022
Int. Cl. C09D 11/322 (2014.01); B41M 5/00 (2006.01); B41M 7/00 (2006.01); C04B 41/00 (2006.01); C04B 41/45 (2006.01); C04B 41/46 (2006.01); C04B 41/82 (2006.01); C09D 11/033 (2014.01); C09D 11/037 (2014.01); C09D 11/40 (2014.01)
CPC C09D 11/322 (2013.01) [B41M 5/0023 (2013.01); B41M 5/0047 (2013.01); B41M 5/007 (2013.01); B41M 7/009 (2013.01); C04B 41/009 (2013.01); C04B 41/4543 (2013.01); C04B 41/4554 (2013.01); C04B 41/4578 (2013.01); C04B 41/463 (2013.01); C04B 41/82 (2013.01); C09D 11/033 (2013.01); C09D 11/037 (2013.01); C09D 11/40 (2013.01)] 21 Claims
 
1. A colouring composition, preferably an ink for ink jet printing, comprising:
(A) 3.0-15.0% by weight of Ti in the form of a titanium compound obtained by a process comprising:
(i) reacting at least one titanium alkoxide of formula Ti(OR1)4, wherein R1 is a linear or branched C1-C4 saturated alkyl radical, with water and, optionally, at least one alcohol, obtaining a first reaction mixture;
(ii) adding glycolic acid to the reaction mixture of step (i) in a Ti:acid molar ratio comprised between 1:0.8 and 1:2.0, obtaining a second reaction mixture comprising water, alcohol and at least one intermediate titanium compound;
(iii) optionally, at least partially removing the water and alcohol from the second reaction mixture;
(iv) adding to the mixture of step (ii) or of step (iii) at least one compound of formula N(R2)3, wherein the R2 groups, whether the same or different from each other, are independently selected from the group consisting of H, CO(NH2), linear or branched C1-C4 alkyl radicals, linear or branched C1-C4 alcohols, and combinations thereof, in a Ti:N(R2)3 molar ratio comprised between 1:0.20 and 1:1.50; and
(v) completely eliminating the alcohol from the mixture of step (iv);
(B) 0.2-2.5% by weight of Cr and/or Ni in the form of a water-soluble organic compound of Cr and/or a water-soluble organic compound of Ni;
(C) up to 100% by weight of a solvent selected from the group consisting of water, organic solvents miscible with water and mixtures thereof,
wherein the quantities (A), (B) and (C) refer to the overall weight of the colouring composition.