GB626625A - Photographic emulsions - Google Patents

Photographic emulsions

Info

Publication number
GB626625A
GB626625A GB25870/45A GB2587045A GB626625A GB 626625 A GB626625 A GB 626625A GB 25870/45 A GB25870/45 A GB 25870/45A GB 2587045 A GB2587045 A GB 2587045A GB 626625 A GB626625 A GB 626625A
Authority
GB
United Kingdom
Prior art keywords
acrylic acid
interpolymerization
addition
groups
hydrolysing
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
GB25870/45A
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.)
GAF Chemicals Corp
Original Assignee
General Aniline and Film Corp
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 General Aniline and Film Corp filed Critical General Aniline and Film Corp
Publication of GB626625A publication Critical patent/GB626625A/en
Expired legal-status Critical Current

Links

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
    • G03C1/005—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
    • G03C1/053—Polymers obtained by reactions involving only carbon-to-carbon unsaturated bonds, e.g. vinyl polymers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The preparation of interpolymers of acrylic or an a -substituted acrylic acid and an acrylic acid or a -substituted acrylic acid amide is described for use in photographic emulsions comprising a light-sensitive material dispersed in a thermal-reversible gel containing gelatine and the interpolymer. Terpolymers may be used by including acrylic acid esters or vinyl esters in the interpolymerization mixture, and alcohol groups may be introduced into the terpolymers prepared from vinyl esters by hydrolysing or partially hydrolysing the terpolymer formed. Preferably, the interpolymer components contain polar substituents, specified are hydroxyl, amino, amide, formyl, carboxyl and nitrile groups. The interpolymerization is preferably carried out in aqueous emulsion at a pH of 4-9 in the presence of an oxidizing catalyst. Products containing carboxyl groups may be partially esterified with ethylene glycol or glycerol. The gel may be hardened by addition of aluminium and chromium ions and its permeability to water increased by addition of polyvinyl alcohol. Examples are given of the interpolymerization of methacrylic acid and methacrylamide with or without the addition of methyl acrylate. Specification 626,626 is referred to.
GB25870/45A 1944-10-25 1945-10-04 Photographic emulsions Expired GB626625A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US560359A US2461023A (en) 1944-10-25 1944-10-25 Photographic silver halide emulsions

Publications (1)

Publication Number Publication Date
GB626625A true GB626625A (en) 1949-07-19

Family

ID=24237468

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25870/45A Expired GB626625A (en) 1944-10-25 1945-10-04 Photographic emulsions

Country Status (2)

Country Link
US (1) US2461023A (en)
GB (1) GB626625A (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1055759A (en) * 1946-07-22 1954-02-22
NL150528B (en) * 1949-05-14 Hollandse Signaalapparaten Bv PROCEDURE FOR MANUFACTURE OF TWISTLESS OR ALMOST TWISTLESS YARN AND THE YARN OBTAINED BY USING THIS PROCESS.
BE502283A (en) * 1950-03-31
BE520462A (en) * 1952-06-04
BE522869A (en) * 1952-09-24
US2794787A (en) * 1952-10-21 1957-06-04 Eastman Kodak Co Modified gelatins obtained by polymerizing an alkenyl carbonamide in an aqueous gelatin solution
US2822271A (en) * 1953-10-19 1958-02-04 Keuffel & Esser Co Photosensitive material
BE542633A (en) * 1954-11-08
BE543426A (en) * 1954-12-08
BE543031A (en) * 1954-12-29
US2949442A (en) * 1955-05-04 1960-08-16 Eastman Kodak Co Process for preparing amphoteric copolymers and the resulting products
US3005784A (en) * 1958-03-31 1961-10-24 Goodrich Co B F Polymers containing amide and carboxylic groups
BE586983A (en) * 1959-01-27
US3130050A (en) * 1960-01-18 1964-04-21 Gen Aniline & Film Corp Oil-dispersed dyes in photopolym-erization systems
US3114651A (en) * 1960-07-22 1963-12-17 American Cyanamid Co Water insolubilization of acrylamido polymers with a salt of trivalent chromium
BE620658A (en) * 1961-07-27
BE620515A (en) * 1961-07-27
US3850646A (en) * 1970-03-24 1974-11-26 H Wagner Light sensitive photographic element

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2006002A (en) * 1932-11-29 1935-06-25 Agfa Ansco Corp Manufacture of photographic silver halide emulsion layers
US2184310A (en) * 1937-06-10 1939-12-26 Du Pont Photographic and printing media
US2244703A (en) * 1938-04-16 1941-06-10 Du Pont Water soluble salts of interpolymers containing methacrylic acid
US2205883A (en) * 1938-06-16 1940-06-25 Du Pont Tanning
NL55385C (en) * 1940-06-14 1900-01-01
US2281703A (en) * 1940-08-01 1942-05-05 Eastman Kodak Co Photographic silver halide emulsions
US2253078A (en) * 1940-08-01 1941-08-19 Eastman Kodak Co Photographic silver halide emulsion

Also Published As

Publication number Publication date
US2461023A (en) 1949-02-08

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