GB1205474A - Gelatin-containing photographic coating compositions and photographic materials containing them - Google Patents

Gelatin-containing photographic coating compositions and photographic materials containing them

Info

Publication number
GB1205474A
GB1205474A GB572168A GB572168A GB1205474A GB 1205474 A GB1205474 A GB 1205474A GB 572168 A GB572168 A GB 572168A GB 572168 A GB572168 A GB 572168A GB 1205474 A GB1205474 A GB 1205474A
Authority
GB
United Kingdom
Prior art keywords
dextran
dextran sulphate
reacted
sulphate
photographic
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
GB572168A
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.)
Meito Sangyo KK
Original Assignee
Meito Sangyo KK
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 Meito Sangyo KK filed Critical Meito Sangyo KK
Publication of GB1205474A publication Critical patent/GB1205474A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
    • C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
    • C08B37/0009—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid alpha-D-Glucans, e.g. polydextrose, alternan, glycogen; (alpha-1,4)(alpha-1,6)-D-Glucans; (alpha-1,3)(alpha-1,4)-D-Glucans, e.g. isolichenan or nigeran; (alpha-1,4)-D-Glucans; (alpha-1,3)-D-Glucans, e.g. pseudonigeran; Derivatives thereof
    • C08B37/0021—Dextran, i.e. (alpha-1,4)-D-glucan; Derivatives thereof, e.g. Sephadex, i.e. crosslinked dextran
    • 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
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/04—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with macromolecular additives; with layer-forming substances

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Organic Chemistry (AREA)
  • Molecular Biology (AREA)
  • General Health & Medical Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Medicinal Chemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

1,205,474. Gelatine compositions; dextran sulphates. MEITO SANGYO K.K. AND KONISHIROKU PHOTO INDUSTRY CO. Ltd. 5 Feb., 1968 [6 Feb., 1967 (2)], No. 5721/68. Headings C3H and C3U. [Also in Division G2] Photographic gelatine coating compositions, including gelatine silver halide emulsions, contain dextran sulphate or a carboxyalkyl dextran sulphate or a salt thereof. The composition may be coated on a support to form an emulsion layer or an interlayer or an antiabrasion, subbing, antihalation or backing layer. The gellation temperature of the composition is raised and when the latter is an emulsion the covering power of the developed silver is increased. Salts of dextran sulphate and carboxyalkyl dextran sulphates are prepared. In Examples A to D, dextrans of various viscosities are reacted with chlorosulphonic acid in formamide and isolated as the sodium and calcium salts of dextran sulphate; E, sodium dextran sulphate is reacted with monochloracetic acid to form sodium carboxymethyl dextran sulphate; and, F, dextran is reacted with monochloracetic acid in aqueous alkali and the carboxymethyl dextran is reacted in formamide with chlorosulphonic acid and isolated as sodium carboxymethyl dextran sulphate.
GB572168A 1967-02-06 1968-02-05 Gelatin-containing photographic coating compositions and photographic materials containing them Expired GB1205474A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP719467 1967-02-06
JP719367 1967-02-06

Publications (1)

Publication Number Publication Date
GB1205474A true GB1205474A (en) 1970-09-16

Family

ID=26341457

Family Applications (1)

Application Number Title Priority Date Filing Date
GB572168A Expired GB1205474A (en) 1967-02-06 1968-02-05 Gelatin-containing photographic coating compositions and photographic materials containing them

Country Status (4)

Country Link
BE (1) BE710390A (en)
DE (1) DE1622294B2 (en)
FR (1) FR1553411A (en)
GB (1) GB1205474A (en)

Also Published As

Publication number Publication date
DE1622294B2 (en) 1976-07-22
BE710390A (en) 1968-06-17
DE1622294A1 (en) 1970-10-22
FR1553411A (en) 1969-01-10

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee