GB848458A - Improvements in or relating to diazotype processes - Google Patents

Improvements in or relating to diazotype processes

Info

Publication number
GB848458A
GB848458A GB3588656A GB3588656A GB848458A GB 848458 A GB848458 A GB 848458A GB 3588656 A GB3588656 A GB 3588656A GB 3588656 A GB3588656 A GB 3588656A GB 848458 A GB848458 A GB 848458A
Authority
GB
United Kingdom
Prior art keywords
group
diazotype
zincichloride
cyclopentatrione
nov
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3588656A
Inventor
Kenneth Reynolds
George Frank Duffin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ilford Imaging UK Ltd
Original Assignee
Ilford Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ilford Ltd filed Critical Ilford Ltd
Priority to GB3588656A priority Critical patent/GB848458A/en
Publication of GB848458A publication Critical patent/GB848458A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • G03C1/52Compositions containing diazo compounds as photosensitive substances
    • G03C1/58Coupling substances therefor

Landscapes

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

Abstract

848,458. Diazotype processes. ILFORD Ltd. Nov. 22, 1957 [Nov: 23, 1956], No. 35886/56. Class 98(2) Diazotype material containing a diazotized amine of the formula:- wherein R1 is an alkyl group of 1 to 3 carbon atoms and R2 is H or a methyl group in 3<1>-, 5 <1>- or 61-position, or the corresponding amines in which the indicated CH3 group is in 4<1>-position, is developed in an alkaline medium in the presence of a 1:3:4-cyclopentatrione which may have an alkvl, arvl or aralkyl group in the 2-position. The diazonium compound may be 4-p-tolylthio- 21, 5-diethoxy-benzene diazonium zincichloride or 21, 5-dimethoxy-4 (2<1>-methyl-phenylthio) benzene diazonium zincichloride. The coupler may be 1; 3; 4-cyclopentatrione or its 2-phenyl derivative, and it may be present in the light-sensitive material or in the alkaline developer solution. The developer may contain potassium tetraborate and sodium lauryl sulphate with or without potassium carbonate. Specification 759,045 is referred to.
GB3588656A 1956-11-23 1956-11-23 Improvements in or relating to diazotype processes Expired GB848458A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3588656A GB848458A (en) 1956-11-23 1956-11-23 Improvements in or relating to diazotype processes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3588656A GB848458A (en) 1956-11-23 1956-11-23 Improvements in or relating to diazotype processes

Publications (1)

Publication Number Publication Date
GB848458A true GB848458A (en) 1960-09-14

Family

ID=10382630

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3588656A Expired GB848458A (en) 1956-11-23 1956-11-23 Improvements in or relating to diazotype processes

Country Status (1)

Country Link
GB (1) GB848458A (en)

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