EP 0193200 A1 19860903 - Colour-forming mixture and pressure-sensitive recording material containing this mixture.
Title (en)
Colour-forming mixture and pressure-sensitive recording material containing this mixture.
Title (de)
Farbbildnergemische und diese Gemische enthaltendes druckempfindliches Aufzeichnungsmaterial.
Title (fr)
Mélange pour le développement de la couleur et matériel pour l'enregistrement sensible à la pression contenant ce mélange.
Publication
Application
Priority
DE 3507173 A 19850301
Abstract (en)
[origin: US4717423A] Mixtures of dye precursors which contain (a) the lactone of 2-carboxy-4,4'-bisdimethylaminobenzhydrol (I) and (b) crystal violet lactone and/or one or more fluoran lactones of the formula <IMAGE> (II) where R1 is alkyl, R2 is alkyl, phenalkyl, unsubstituted or substituted phenyl or cycloalkyl, or <IMAGE> is pyrrolidinyl, piperidinyl or morpholinyl, R3 is H or tert.-butyl, R4 is H or methyl, R5 is H, alkyl or phenalkyl and R6 is H, alkyl, phenalkyl, cycloalkyl or unsubstituted or substituted phenyl, or <IMAGE> is pyrrolidinyl, piperidinyl or morpholinyl, possess improved lightfastness in pressure-sensitive recording systems.
Abstract (de)
Farbbildnergemische, die (a) das Lacton des 2-Carboxy-4,4'-bisdimethylaminobenzhydrol (I) und (b) Kristallviolettlacton und/oder mindestens ein Fluoranlacton der Formel <IMAGE> stehen, zeigen in druckempfindlichen Aufzeichnungssystemen verbesserte Lichtechtheit.
IPC 1-7
IPC 8 full level
B41M 5/145 (2006.01); C09B 67/22 (2006.01)
CPC (source: EP US)
B41M 5/145 (2013.01 - EP US); B41M 5/1455 (2013.01 - EP US)
Citation (search report)
- [X] US 3525630 A 19700825 - PHILLIPS PAUL S JR
- [Y] DE 2151113 A1 19720420 - KANZAKI PAPER MFG CO LTD
- [Y] GB 852131 A 19601026 - CARIBONUM LTD
- [YD] CHEMICAL ABSTRACTS, Band 84, Nr. 4, 26. January 1976, Seite 116, Nr. 19192v, Columbus, Ohio, US; & JP - A - 75 124 930 (KANZAKI PAPER MFG. CO., LTD.) 01.10.1975
- [Y] CHEMICAL ABSTRACTS, Band 80, Nr. 10, 11. März 1974, Seite 410, Nr. 65547e, Columbus, Ohio, US; & JP - A - 73 69 615 (MITSUI PETROCHEMICAL INDUSTRIES, LTD.) 21.09.1973
- [Y] CHEMISTRY AND INDUSTRY, Nr. 12, 16. Juni 1973, Seite 583, The Chemical Society, Letchworth, Herts., GB; EN ABRAHART: " Stabilised leuco dyes as colour formers"
Designated contracting state (EPC)
BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0193200 A1 19860903; BR 8600875 A 19861111; DE 3507173 A1 19860904; FI 860749 A0 19860220; FI 860749 A 19860902; JP S61204275 A 19860910; US 4717423 A 19880105
DOCDB simple family (application)
EP 86102602 A 19860228; BR 8600875 A 19860228; DE 3507173 A 19850301; FI 860749 A 19860220; JP 4053486 A 19860227; US 83328086 A 19860227