Classifications

• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
  • G03C1/00—Photosensitive materials
  • G03C1/52—Compositions containing diazo compounds as photosensitive substances
  • G03C1/54—Diazonium salts or diazo anhydrides

Definitions

• the present invention relates to the production of light-sensitive diazotype layers.
• diam-compounds proposed for the positive diazo-type process only the diazo-compounds of the o-aminonaphthols and p-diamines have been able to attain any considerable practical importance. These diam-compounds are very light-sensitive,possess good lasting properties and are more or less coloured. Moreover they fade 10 during the exposure, so that a good white ground is obtained, and, when suitable azo-components are employed, they give dark colour tones.
• diazo compound of a para-aminodiphenyl which carries in the nucleus carrying the diazo group two alkoxy groups in 2- and 5- ..positions can be employed exceptionally advantageously for the diazotype process.
• the diazo compound of 4-amino-2,5-diethoxydiphenyl is a compound of this kind.
• the designations 1- or 1-position, respectively, in this specification indicate the places at which the benzene nuclei of the diphenyl are combined with one another.
• alkyl groups in the alkoxy groups methyl and ethyl are of particular value.
• the alkyl groups may also be propyl or butyl groups. Alkyl resi-.
• The. new diam-compounds generally couple rather energetically, so that they are particularly suitable for the wet dia'zotype process. They may, however, also be applied to a base together with azo-jcomponents which couple more slowly,
• Layers are then obtain'edwhich can be developed either by the dry process withammonia, or by the wet process, for example with soda solution.
• a paper containing the diazo-compound-if desired, together, with an Good results are in particular obtained with 5 I such compounds as contain in addition also ether groups in the other benzene nucleus preferably in 4-position, such as, for example the diazo-compound of 4-amino-2,5-diethoxy-4'-methoxy-diphenyl; 'As ether groups in the nucleus contain- 10 ing no diazo group methoxy-and-ethoxy groups are particularly suitable. In place of these groups also a methyl group can be employed.
• Such bodies substituted in both nuclei give particularly deeply coloured layers, so that when copying the 15 formation of the image can be very readily followed.
• the layers may be exposed by the aid of the various customary sources of light.
• still further substituents such as alkyl groups or halogens, may be introduced into the 20 molecule of the diam-compound, whereby the colour tones are more or less altered.
• a suitable acid such as tartaric acid or boric 35 acid
• a means for preventing yellowing is painted on to a base of the usual kind and is exposed behind a pattern.
• triethoxydiphenyl or the diazo-compound of 4- amino-2,5-diethoxy-4'-methoxydiphenyl may be employed.
• the lines of the obtained prints are black-blue.
• Light-sensitive layer comprising the monovdiazo compound or a 4-amino-2,5-dialkoxydiphenyl, which contains in the nucleus containing no diazo group a substituent selected from the group consisting of the methylgroup, the methoxy group and the ethoxy group.
• Light-sensitive layer comprising the monodiazo compound of a 4-amino-2,5-dialkoxydiphenyl, which contains in the nucleus containing no diazo' group in the 4-position a substituent selected from the group consisting of the methyl group, the methoxy group and the ethoxy group.
• Light-sensitive layer comprising the monodiazo compound of 4-amino-2,5,4-trimethoxydiphenyl.
• Light-sensitive layer comprising the monodiazo compound of 4-amino-2,5,4-triethoxydiphenyl.
• Light-sensitive layer comprising the monodiazo compound of a p-aminodiphenyl which carries in the nucleus containing-the 'diazo group two alkoxy groups in 2- and 5-positions.
• Light-sensitive layer comprising the monodiazo compound ofa p-aminodiphenyl which carries in the nucleus containing the'diazo group two alkoxy groups in 2- and 5-positions wherein the said alkoxy groups contain one to four carbon atoms.
• Light-sensitive layer comprising the monodiazo compound of a 4-amino-2,5dialkoxydiphenyl wherein the said alkoxy groups contain one to. four carbon atoms, the diazo compound carrying. in the nucleus containing no diazo group a substituent selected from the group consisting of the methyl group, the methoxy group and the ethoxy group.
• Light-sensitive layer comprising the monodiazo compound of a 4-amino-2,5dialkcxydiphenyl wherein the said alkoxy groups contain one to four carbon atoms, the diazo compound carrying in the nucleus containing no diazo group, in the 4'-position, a substituent selected from the group consisting of the methyl group, the methoxy group and the ethoxy group.

Landscapes

• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=7250046

Family Applications (1)

Country Status (4)

Families Citing this family (1)

• 0
  • NL NL47899D patent/NL47899C/xx active
• 1936
  • 1936-05-11 GB GB13320/36A patent/GB471614A/en not_active Expired
• 1937
  • 1937-03-27 US US133384A patent/US2158836A/en not_active Expired - Lifetime
  • 1937-04-21 FR FR820905D patent/FR820905A/fr not_active Expired

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