US 12,378,424 B2
Microparticle composition comprising an organic IR absorbing pigment
Roland Hinrich Staff, Ludwigshafen am Rhein (DE); Yannick Fuchs, Ludwigshafen am Rhein (DE); Helmut Reichelt, Ludwigshafen am Rhein (DE); Hans Reichert, Basel (CH); Oliver Seeger, Ludwigshafen am Rhein (DE); Korinna Dormann, Ludwigshafen am Rhein (DE); and Bernd Dieter Oschmann, Ludwigshafen am Rhein (DE)
Assigned to BASF SE, Ludwigshafen am Rhein (DE)
Appl. No. 17/286,473
Filed by BASF SE, Ludwigshafen am Rhein (DE)
PCT Filed Oct. 17, 2019, PCT No. PCT/EP2019/078222
§ 371(c)(1), (2) Date Apr. 18, 2021,
PCT Pub. No. WO2020/079154, PCT Pub. Date Apr. 23, 2020.
Claims priority of application No. 18201244 (EP), filed on Oct. 18, 2018.
Prior Publication US 2021/0388223 A1, Dec. 16, 2021
Int. Cl. C09D 11/00 (2014.01); B41M 3/14 (2006.01); B42D 25/382 (2014.01); C09B 67/02 (2006.01); C09B 67/08 (2006.01); C09D 5/32 (2006.01); C09D 11/037 (2014.01); C09D 11/50 (2014.01); D21H 19/42 (2006.01); D21H 21/40 (2006.01); D21H 21/48 (2006.01)
CPC C09D 11/037 (2013.01) [B41M 3/14 (2013.01); B42D 25/382 (2014.10); C09B 67/0013 (2013.01); C09B 67/0097 (2013.01); C09D 5/32 (2013.01); C09D 11/50 (2013.01); D21H 19/42 (2013.01); D21H 21/40 (2013.01); D21H 21/48 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A microparticle based pigment composition of an organic IR absorbing pigment, which is a polyunsaturated polycyclic organic compound or metal organic compound having a main absorption maximum in the range from 750 to 1100 nm, wherein the microparticles of the pigment composition contain the organic IR absorbing pigment as solid particles, which are surrounded by or embedded in an aminoplast polymer, which is a polycondensation product of one or more amino compounds and one or more aldehydes, where the microparticle based pigment composition is characterized by a volume based particle size distribution, as determined by static light scattering according to ISO 13320:2009 EN, having a volume-averaged mean D (4,3) value in the range from 1.0 to 15.0 μm, wherein the amount of aminoplast polymer in the microparticle composition is from 15 to 50% by weight, based on the total weight of aminoplast polymer and the organic IR absorbing pigment and the amount of organic IR absorbing pigment is from 50 to 85% by weight, based on the total weight of the aminoplast polymer and the organic IR absorbing pigment;
wherein the microparticle based pigment composition is an aqueous suspension of the microparticles or a solid composition of the microparticles.