Patent · US Active

Heat-sensitive recording material

US10882348B2 · kind B2 · utility

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11Claims

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Assignee

MITSUBISHI HITEC PAPER EUROPE GMBH · DE

Inventors

Claas Boxhammer · Herford, DE
Martin Schreer · Melle, DE

Key dates

Filing date	Sep 29, 2017
Grant date	Jan 5, 2021
Priority date	—
Expiry date	Sep 29, 2037

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41M2205/40
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A heat-sensitive recording material having i) a supporting substrate and ii) a heat-sensitive recording layer, where the heat-sensitive recording layer comprises a colour former and a colour developer mixture and the colour developer mixture comprises a) N-[2-(3-phenylureido)phenyl]benzenesulfonamide (compound of the formula (I)), where the compound of the formula (I) is in a crystalline form having an absorption band at 3401 □ 20 cm 1 in the IR spectrum, and b) N-(4-methylphenylsulfonyl)-N′-(3-(4-methylphenylsulfonyloxy)phenyl) urea (compound of the formula (II)), where the mass ratio between the compound of the formula (I) and the compound of the formula (II) is 0.5:99.5 to 35:65 or 99.5:0.5 to 65:35.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.