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Machine translation
1. (WO1981001473) UV-ABSORBING COMPOUNDS AND PHOTOGRAPHIC ELEMENTS CONTAINING THEM
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/001473    International Application No.:    PCT/US1980/001473
Publication Date: 28.05.1981 International Filing Date: 31.10.1980
IPC:
C07D 249/20 (2006.01), G03C 1/815 (2006.01)
Applicants:
Inventors:
Priority Data:
65207 09.11.1979 IT
Title (EN) UV-ABSORBING COMPOUNDS AND PHOTOGRAPHIC ELEMENTS CONTAINING THEM
(FR) COMPOSES ABSORBANT LES RAYONS ULTRAVIOLETS ET ELEMENTS PHOTOGRAPHIQUES LES CONTENANT
Abstract: front page image
(EN)It is desirable to protect color photographic dye images from ultraviolet radiation which tends to cause dyes to fade. It has been the practice in the art to add materials into or above the silver halide emulsions which will absorb ultraviolet radiation but allow transmission of visible radiation. One of the best classes of compounds are the 2-(2'-hydroxyphenyl)-benzotriazoles. These materials absorb ultraviolet radiation well, but tend to have poor solubility, crystallize out of the coating solution and emulsion, and diffuse through the photographic element. A novel class of substituted 2-(2'-hydroxyphenyl)-benzotriazoles has been found to reduce many of these problems.
(FR)Il est souhaitable de proteger les matieres colorantes des images photographiques en couleur des radiations ultraviolettes qui ont tendance a provoquer un affaiblissement de ces matieres colorantes. La pratique courante dans l'art est celle d'ajouter des materiaux a l'interieur ou a la surface des emulsions d'- halogenure d'argent qui absorbent la radiation ultraviolette mais permettent la transmission de la radiation visible. Une des meilleures classes de composes est representee par les 2- (2'-hydroxyphenyle)-benzotriazoles. Ces materiaux absorbent efficacement la radiation ultraviolette, mais ont tendance a presenter une faible solubilite ils se cristallisent a l'exterieur de la solution et de l'emulsion de revetement, et se diffusent au travers de l'element photographique. Une nouvelle classe de 2- (2'-hydroxyphenyle)-benzotriazoles substitues a ete decouverte pour limiter un nombre considerable de ces problemes.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)