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. 10, 2023
Filed:
May. 06, 2019
Applicant:
Papierfabrik August Koehler SE, Oberkirch, DE;
Inventors:
Assignee:
PAPIERFABRIK AUGUST KOEHLER SE, Oberkirch, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D 11/50 (2014.01); B41M 5/327 (2006.01); B41M 5/333 (2006.01); B41M 5/41 (2006.01); C09D 11/037 (2014.01); C09K 9/02 (2006.01); D21H 19/42 (2006.01); D21H 27/00 (2006.01);
U.S. Cl.
CPC ...
C09D 11/50 (2013.01); B41M 5/3275 (2013.01); B41M 5/3335 (2013.01); B41M 5/41 (2013.01); C09D 11/037 (2013.01); C09K 9/02 (2013.01); D21H 19/42 (2013.01); D21H 27/00 (2013.01); B41M 2205/36 (2013.01); C09K 2211/1007 (2013.01); C09K 2211/1011 (2013.01); C09K 2211/1014 (2013.01); C09K 2211/1022 (2013.01);
Abstract
The invention relates to a heat-sensitive recording material, comprising a carrier substrate and a heat-sensitive colour-forming layer, which contains at least one colour former and at least one phenol-free colour developer, characterised in that the at least one colour developer is the compound of formula (A), Ar(NH—CO—NH—CO—NH—Ar)(A), wherein Ar is an unsubstituted or substituted phenyl or naphthyl group, Aris an unsubstituted or substituted phenyl, naphthyl, pyridyl, thiazolyl or benzothiazolyl group, and n is 1 or 2.