公开(公告)号：US20170360660A1

公开(公告)日：2017-12-21

申请号：US15532900

申请日：2015-12-03

Applicant: BASF SE

Inventor： Ewelina BURAKOWSKA-MEISE ,  Valeria BEM ,  Roland Hinrich STAFF ,  Brigitte LINDEMANN ,  Helmut WITTELER

IPC: A61K8/11 ,  B01J13/22 ,  A61Q17/04 ,  A61K8/81 ,  B01J13/08

Abstract: The present invention relates to microcapsules comprising a capsule core and a capsule shell wherein the capsule shell comprises a core surrounding layer of a polyvinyl alcohol and an adjacent layer of a polyoxazoline, a process of their production and their use.

公开(公告)号：US20210388223A1

公开(公告)日：2021-12-16

申请号：US17286473

申请日：2019-10-17

Applicant: BASF SE

Inventor： Roland Hinrich STAFF ,  Yannick FUCHS ,  Helmut REICHELT ,  Hans REICHERT ,  Oliver SEEGER ,  Korinna DORMANN ,  Bernd Dieter OSCHMANN

IPC: C09D11/037 ,  C09D11/50 ,  C09D5/32 ,  D21H21/40 ,  D21H21/48 ,  D21H19/42 ,  C09B67/08 ,  C09B67/02 ,  B42D25/382 ,  B41M3/14

Abstract: The present invention relates to microparticle compositions comprising an organic IR absorbing pigment having a main absorption maximum in the range from 750 to 1100 nm. The invention also relates to a process for producing said microparticle compositions and to their use in a printing ink, in particular in a printing ink, which is suitable for producing a security feature or a security document. 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. 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 D(4,3) value in the range from 1.0 to 15.0 μm.

公开(公告)号：US20210387156A1

公开(公告)日：2021-12-16

申请号：US17290669

申请日：2019-10-29

Applicant: BASF SE

Inventor： Bernd Dieter OSCHMANN ,  Kerstin MUELHEIMS ,  Wolfgang KRAUSE ,  Patrick LEIBACH ,  Roland Hinrich STAFF ,  Dieter FLICK ,  Lukas MAYR ,  Stephanie RENZ ,  Felicitas GUTH ,  Klaus KAHLE ,  Stephan HUEFFER ,  Tobias Maximilian MERKEL ,  Axel BINDER ,  Karl KOLTER ,  Yean Yik GEOERG ,  Regina VOGELSANG ,  Antoine Maxime Charles Jos BEZIAU

IPC: B01J13/20 ,  B01J13/22

Abstract: The present invention relates to processes for producing microparticles having, in their interior, at least one cavity which is connected via pores to the surface of the microparticles and which have been laden with at least one organic active of low molecular weight. The invention especially relates to a process for loading microparticles with at least one organic active of low molecular weight, wherein the active has been embedded in a matrix and/or the pores of the microparticles have been closed by means of a substance applied to the surface of the microparticles. The invention additionally relates to a process for sealing microparticles laden with at least one organic active of low molecular weight. The invention also relates to compositions of microparticles laden with at least one active of low molecular weight and to the use thereof.