GB259926A - Improvements relating to the manufacture of photographic silver halide emulsions - Google Patents

Improvements relating to the manufacture of photographic silver halide emulsions

Info

Publication number
GB259926A
GB259926A GB2016926A GB2016926A GB259926A GB 259926 A GB259926 A GB 259926A GB 2016926 A GB2016926 A GB 2016926A GB 2016926 A GB2016926 A GB 2016926A GB 259926 A GB259926 A GB 259926A
Authority
GB
United Kingdom
Prior art keywords
silver halide
halide emulsions
manufacture
improvements relating
photographic silver
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
GB2016926A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Publication of GB259926A publication Critical patent/GB259926A/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
    • G03C1/047—Proteins, e.g. gelatine derivatives; Hydrolysis or extraction products of proteins

Abstract

259,926. I. G. Farbenindustrie Akt.- Ges., (Assignees of Akt.-Ges. f³r Anilin- Fabrikation). Oct. 14, 1925, [Convention date]. Addition to 258,237. Plates, films, and papers; emulsions, preparing. -Decomposition products of proteins, for use in making silver halide emulsions, are prepared by acid hydrolysis instead of by alkali or fermentative hydrolysis as described in the parent Specification. The proteins are treated for some time with hot dilute, nitric, sulphuric, hydrochloric, or other acid. The resulting solutions, preferably neutralized, may be highly concentrated and evaporated to dryness. Reference is made to Specification 235,210 as open to inspection under 'Sect. 91 of the Act.
GB2016926A 1925-10-14 1926-08-16 Improvements relating to the manufacture of photographic silver halide emulsions Expired GB259926A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA0046124 1925-10-14

Publications (1)

Publication Number Publication Date
GB259926A true GB259926A (en) 1927-09-22

Family

ID=6935092

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2016926A Expired GB259926A (en) 1925-10-14 1926-08-16 Improvements relating to the manufacture of photographic silver halide emulsions

Country Status (1)

Country Link
GB (1) GB259926A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2699391A (en) * 1950-01-11 1955-01-11 Gen Aniline & Film Corp Synthetic polypeptides of alpha-amino acids as restrainers in photographic emulsions
US2710805A (en) * 1952-10-09 1955-06-14 Ilford Ltd Production of silver halide photographic emulsions containing a synthetic polypeptide derivative
US3190752A (en) * 1961-12-26 1965-06-22 Fuji Photo Film Co Ltd High edge gradient silver halide emulsion

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2699391A (en) * 1950-01-11 1955-01-11 Gen Aniline & Film Corp Synthetic polypeptides of alpha-amino acids as restrainers in photographic emulsions
US2710805A (en) * 1952-10-09 1955-06-14 Ilford Ltd Production of silver halide photographic emulsions containing a synthetic polypeptide derivative
US3190752A (en) * 1961-12-26 1965-06-22 Fuji Photo Film Co Ltd High edge gradient silver halide emulsion

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