Basf Aktiengesellschaft

Basf Se Corporation

Oliver Seeger

Norbert Mronga

Raimund Schmid

Helmut Reichelt

Korinna Dormann

Hansulrich Reisacher

Hans Reichert

Rene Fischer

Christian Doerr

Michael Veith

Michelle Richert

Yannick Fuchs

Wilma M Dausch

Nikolay A Grigorenko

Gerhard Berger

Arno Bohm

Jochen Brill

Arno B&ouml;hm

Thomas Musiol

Olivier Enger

Rainer Henning

Ellen Pfrommer

Gunter Etzrodt

Marie-Pascale Perritaz

Anton Dotter

Stefan Faber

Ulrich Schalkowsky

Roland Hinrich Staff

Yves Bron

Arno Böhm

Thorsten Clemens

Reinhard Zickgraf

Otmar Pelz

Claus Hoffmann

Eckehard Fritscher

Bernd Dieter Oschmann

Gerd Rollar

Günter Etzrodt

J&ouml;rg Adel

Kirill Bramnik

Ruth Bauer

The present invention relates to a new crystal form of the compound of formula and a process for its preparation. The compound may be used in compositions for inks, paints and plastics, especially in a wide variety of printing systems and is particularly well-suited for security applications.

Crystal form of an organic fluorescent compound

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.

Microparticle composition comprising an organic IR absorbing pigment

The present invention relates to naphthalocyanine and phthalocyanine chromophores of formula (I), 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.

Naphthalocyanine and phthalocyanine chromophores

The present invention relates to a new crystal form of bis(diphenylimidazolidinetrithione-&#x3ba;S4, &#x3ba;S5)-, (SP-4-1)-nickel(II), a printing ink formulation for security printing and security documents, comprising the new crystal form of bis(diphenylimidazolidinetrithione-&#x3ba;S4, &#x3ba;S5)-, (SP-4-1)-nickel(II) as well as its use as IR absorber.

Crystal form of a dithiolene metal complex

The present invention relates to the use of specific naphthalocyanine chromophores with different axial substituents as almost colourless IR absorbers for security printing applications.

Naphthalocyanine derivatives

The present invention relates to complex security elements based on liquid crystal coatings which are subsequently coated with specific metallic nano-shaped metal particles, a method for their manufacture, in particular on a glass, paper or on a plastic substrate and a security product obtainable using the security element. The security element may contain additionally an embossed surface relief microstructure, especially an optically variable image (an optically variable device, OVD), such as a hologram. A further aspect of the invention is the use of such a security element for the prevention of counterfeit or reproduction of a document of value.

Security elements and method for their manufacture

The present invention relates to a process for producing polymerized films with line texture or fingerprint texture or for producing substrates coated with polymerized films with line texture or fingerprint texture, to polymerized films, obtainable by this process, with line texture or fingerprint texture or substrates coated with polymerized films with line texture or fingerprint texture, to pigments obtainable by comminuting such films, to the use of such films, substrates or pigments as or in optical filter(s), polarizers, decorative media, forgeryproof markers, reflective media or for focusing light (in solar cells), to the use of such films as an antibacterial coating, to a forgeryproof marker which comprises such a film, and to a process for detecting forgeryproof markings.

Polymerized films with line texture or fingerprint texture

Use of luster pigments based on a platelet-shaped metallic substrate coated with a low refractive dielectric layer which does not absorb visible light, for pigmenting macromolecular materials.

Coated metallic luster pigments for pigmenting high molecular weight materials

Luster pigments having pronounced sparkle which are based on aluminum platelets which have been coated with iron oxide and have in the precoated state an average platelet size from 8 to 30 &#x3bc;m, an average platelet thickness from 300 to 600 nm and an aspect ratio from 15 to 70.

Luster pigments having a pronounced glittering effect

Goniochromatic luster pigments comprising at least one dielectric low-refractive interference-colored layer which includes a polar organic solvent which can interact with the layer material via functional groups.

Goniochromatic bright pigments

Goniochromatic luster pigments which are based on titanium dioxide-coated siliceous platelets heated in a reductive atmosphere

Gloss pigments comprising an absorbent low-refractive coating

Phosphatic pigment preparations

Bismuth vanadate pigments comprising at least one coating containing calcium fluoride, bismuth oxyfluoride or a lanthanide fluoride or oxyfluoride or a mixture thereof are useful for coloring paints, printing inks and plastics.

Bismuth vanadate pigments comprising at least one metal fluoride coating

Aqueous coating compositions comprise a water-soluble or water-dispersible film-forming polymer, a metallic pigment based on coated metal flakes, an organic nitro compound which is further carboxyl-, carbonyl- and/or hydroxyl-functionalized, and an organic solvent in which the nitro compound is soluble, along with further components customary for aqueous coating compositions.

Aqueous coating compositions comprising metallic pigment

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Mannheim, Germany

Oliver Seeger