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.:
Date of Patent:
Oct. 21, 2014
Filed:
Mar. 05, 2008
Allan Francis Cunningham, Magden, CH;
Thomas Ehlis, Freiburg, DE;
Jean-luc Birbaum, Binningen, CH;
Pascal Hayoz, Hofstetten, CH;
Kamalesh Pai Fondekar, Thane, IN;
Allan Francis Cunningham, Magden, CH;
Thomas Ehlis, Freiburg, DE;
Jean-Luc Birbaum, Binningen, CH;
Pascal Hayoz, Hofstetten, CH;
Kamalesh Pai Fondekar, Thane, IN;
Datalase, Ltd., Cheshire, GB;
Abstract
The present invention provides heat-sensitive coating compositions, which comprise a color developer of formula (1) or mixtures thereof wherein Rcan be hydrogen, C-alkyl, C-cycloalkyl, C-alkenyl, aryl or SOH, and Rand Rcan be the same or different and can be hydrogen, halogen, C-alkyl, C-cyclo-alkyl, C-alkenyl, aryl, OR, NRR, SR, SOH or COORand Rand Rcan be the same or different, and can be hydrogen, halogen, C-alkyl, C-cyclo-alkyl, C-alkenyl, aryl, OR, NRRor SR, R, R, R, Rand Rcan be the same or different and can be hydrogen, C-alkyl, C-cycloalkyl, C-alkenyl or aryl, wherein C-alkyl can be unsubstituted or substituted with one or more C-cycloalkyl, C-alkenyl, phenyl, halogen, OR, NRR, SR, SOH or COOR, and aryl can be unsubstituted or substituted with one or more halogen, C-alkyl, halogenated C-alkyl, C-cycloalkyl C-alkenyl, phenyl, OR, NRR, SR, SOH or COOR, wherein R, R, R, Rand Rcan be the same or different and can be hydrogen, C-alkyl, C-cycloalkyl or C-alkenyl, a process for the preparation of these compositions, a process of coating substrates with these compositions, substrates coated with these compositions, a process for preparing marked substrates using these compositions, marked substrates obtainable by the latter process, and certain color developers.