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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9765227 B1

PDFFull Text
Date of Patent:
Sep. 19, 2017

Filed:

Aug. 01, 2016

Coating compositions for security elements and holograms

Applicant:

Basf SE, Ludwigshafen, DE;

Inventors:

Nikolay A. Grigorenko, Basel, CH;

Michelle Richert, Illzach, FR;

Assignee:

BASF SE, Ludwigshafen, DE;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Kelly M Gambetta

Int. Cl.
CPC ...
B41M 3/14 (2006.01); B44F 1/12 (2006.01); C09D 11/037 (2014.01); B44F 1/14 (2006.01); C09D 5/29 (2006.01); C09D 7/12 (2006.01); C09D 11/101 (2014.01); B05D 3/00 (2006.01); C09D 11/107 (2014.01); C09D 11/14 (2006.01); C09D 11/50 (2014.01); C08K 3/08 (2006.01);
U.S. Cl.
CPC ...
C09D 11/037 (2013.01); B05D 3/007 (2013.01); B41M 3/148 (2013.01); B44F 1/14 (2013.01); C09D 5/29 (2013.01); C09D 7/1266 (2013.01); C09D 7/1275 (2013.01); C09D 7/1291 (2013.01); C09D 11/101 (2013.01); C09D 11/107 (2013.01); C09D 11/14 (2013.01); C09D 11/50 (2013.01); C08K 3/08 (2013.01); C08K 2003/0806 (2013.01); C08K 2201/016 (2013.01); Y10T 156/10 (2015.01); Y10T 428/24851 (2015.01); Y10T 428/25 (2015.01); Y10T 428/256 (2015.01);
Abstract

The present invention relates to the use of coating compositions, comprising shaped transition metal, especially silver, particles and a binder, wherein the ratio of pigment to binder is preferably such that the resulting coating shows an angle dependent color change, for the production of security elements and holograms. When the coating compositions of the present invention are used in coating a hologram the obtained products show a an angle dependent color change (flip/flop effect), different colors in reflection and transmission, an extremely bright OVD image and extremely strong rainbow effect, high purity and contrast.

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