EP 0118086 B1 19890927 - TWO-COMPONENT DIAZO TYPE MATERIAL
Title (en)
TWO-COMPONENT DIAZO TYPE MATERIAL
Publication
Application
Priority
DE 3307364 A 19830302
Abstract (en)
[origin: ES8503862A1] The present invention relates to a two-component diazotype material comprising a support and one or several light-sensitive layers, each of which contains at least one light-sensitive diazonium salt, a coupler component and an acid stabilizer, and at least one of the layers contains a compound which absorbs light in the ultraviolet spectral region. The light-absorbing compound is present in the form of a dye salt of at least one benzothiazole which is converted into its leuco base under the action of an alkaline medium. It thus partially or completely loses its absorptivity toward radiation in the long-wave ultraviolet and short-wave visible spectral regions. The light-absorbing compound comprises a benzothiazole, in particular according to the general formula: < IMAGE > wherein R1 denotes hydrogen, alkyl or aralkyl, R2 denotes hydrogen or an optionally substituted alkyl, aralkyl, aryl, pyridylalkyl, carbalkyl, carboxyalkyl, carboxyaryl, carbamoyl, or sulfamoyl radical, or R1 and R2 denote members of a heterocyclic radical, and R3 denotes hydrogen or alkyl.
IPC 1-7
IPC 8 full level
G03C 1/52 (2006.01); G03C 1/60 (2006.01); G03C 1/61 (2006.01)
CPC (source: EP US)
G03C 1/61 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0118086 A2 19840912; EP 0118086 A3 19870527; EP 0118086 B1 19890927; AT E46773 T1 19891015; BR 8400996 A 19841009; CA 1211977 A 19860930; DE 3307364 A1 19840906; DE 3479925 D1 19891102; DK 105484 A 19840903; DK 105484 D0 19840227; ES 529801 A0 19850316; ES 8503862 A1 19850316; FI 74825 B 19871130; FI 74825 C 19880310; FI 840810 A0 19840229; FI 840810 A 19840903; JP S59165050 A 19840918; NO 840758 L 19840903; US 4540648 A 19850910; ZA 841513 B 19841031
DOCDB simple family (application)
EP 84101944 A 19840224; AT 84101944 T 19840224; BR 8400996 A 19840301; CA 448420 A 19840228; DE 3307364 A 19830302; DE 3479925 T 19840224; DK 105484 A 19840227; ES 529801 A 19840216; FI 840810 A 19840229; JP 3546784 A 19840228; NO 840758 A 19840228; US 58454784 A 19840228; ZA 841513 A 19840229