Abstract: An adhesive compositions which shows a first color change when the ambient temperature is increased to a temperature of ?T1 and a second color change when the ambient temperature is lowered to a temperature of ?T2, wherein T1>T2. Such adhesive compositions have advantageous properties, in particular at security applications.
Type:
Grant
Filed:
November 13, 2014
Date of Patent:
May 9, 2017
Assignee:
ARTIMELT AG
Inventors:
Olaf Meincke, Philip Andres, Thomas Griebel, Benno Blickenstorfer