The present invention refers to a photographic material including in one of its layers a polymeric product having an aminoallylidenemalononitrile ultraviolet absorber unit which can be introduced into a photographic layer by aqueous solutions, with the method according to this invention, of including said aminoallylidenemalononitrile unit in an allyl monomer and then copolymerizing it with an ethylenically unsaturated monomer in order to obtain said polymeric product to be added to the layer forming composition. This invention is of particular industrial interest in the field of color photographic materials.
Silver halide photographic emulsions including dye sensitizers and supersensitizing or stabilizing amounts of a polymeric compound, and photographic elements, particularly radiographic elements, including said emulsions
申请人:MINNESOTA MINING AND MANUFACTURING COMPANY
公开号:EP0027259A1
公开(公告)日:1981-04-22
Object of the invention are photographic emulsions including silver halide grains dispersed in gelatin and at least a methine dye spectral sensitizer associated with said grains, including in association therewith a supersensitizing orstabil- izing amount of polymeric compound having an aminoallylidenmalononitrile moiety. The invention further relates to photographic elements, in particular radiographic elements, comprising said emulsions. According to the invention, said polymeric compound is obtained upon copolymerization of an allyl monomer, comprising said aminoallylidenmalononitrile moiety, with an ethylenically unsaturated monomer.
3-Aminoallylidenemalononitrile uv-absorbing compounds and photographic elements containing them
申请人:MINNESOTA MINING AND MANUFACTURING COMPANY
公开号:EP0210409A2
公开(公告)日:1987-02-04
3-Aminoallylidenemalononitrile compounds corresponding to the formula:
wherein R, is a short alkyl chain having 1 to 3 carbon atoms and R is a substituted or unsubstituted long alkyl chain greater than 10 carbon atoms,
are useful in photography for absorbing ultraviolet radiations in the range from 360 to 400 nm, with no undesired absorption near 420 nm, when introduced in a photographic gelatin layer.
Polymeric ultraviolet absorbers, photographic material including them, and process
申请人:MINNESOTA MINING AND MANUFACTURING COMPANY
公开号:EP0027242B1
公开(公告)日:1985-01-02
Flüssige 2-(2-Hydroxy-3-höherverzweigtalkyl-5-methylphenyl)-2H-benztriazolgemische, Verfahren zu deren Herstellung und diese enthaltende stabilisierte Zusammensetzungen