GB556458A - Improvements in and relating to sensitive photographic materials - Google Patents

Improvements in and relating to sensitive photographic materials

Info

Publication number
GB556458A
GB556458A GB270/42A GB27042A GB556458A GB 556458 A GB556458 A GB 556458A GB 270/42 A GB270/42 A GB 270/42A GB 27042 A GB27042 A GB 27042A GB 556458 A GB556458 A GB 556458A
Authority
GB
United Kingdom
Prior art keywords
group
bromide
phosphonium
prepared
lauryltriethylphosphonium
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
GB270/42A
Other languages
English (en)
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.)
BURT HARING CARROLL
Eastman Kodak Co
Original Assignee
BURT HARING CARROLL
Eastman Kodak Co
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 BURT HARING CARROLL, Eastman Kodak Co filed Critical BURT HARING CARROLL
Publication of GB556458A publication Critical patent/GB556458A/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
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/08—Sensitivity-increasing substances
    • G03C1/10—Organic substances

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
GB270/42A 1940-02-29 1942-01-07 Improvements in and relating to sensitive photographic materials Expired GB556458A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US321593A US2271622A (en) 1940-02-29 1940-02-29 Photographic emulsion

Publications (1)

Publication Number Publication Date
GB556458A true GB556458A (en) 1943-10-06

Family

ID=23251219

Family Applications (1)

Application Number Title Priority Date Filing Date
GB270/42A Expired GB556458A (en) 1940-02-29 1942-01-07 Improvements in and relating to sensitive photographic materials

Country Status (3)

Country Link
US (1) US2271622A (fr)
FR (1) FR949229A (fr)
GB (1) GB556458A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2944902A (en) * 1956-07-30 1960-07-12 Eastman Kodak Co Sensitization of photographic emulsions with ionic polyalkylene oxide salts
US3113026A (en) * 1959-01-19 1963-12-03 Gen Aniline & Film Corp Polyvinyl alcohol photographic silver halide emulsions

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2454043A (en) * 1944-04-04 1948-11-16 Ilford Ltd Gelatino-silver halide photographic elements containing higher fatty alcohols
US2490760A (en) * 1946-04-15 1949-12-06 Eastman Kodak Co Water spot prevention in photographic film
DE1067811B (de) * 1957-01-30 1959-10-29 Hoechst Ag Verfahren zur Herstellung von quaternaeren organischen Phosphorverbindungen
US2937087A (en) * 1957-09-30 1960-05-17 Du Pont Silver halide emulsions
US3230069A (en) * 1958-08-27 1966-01-18 Plant Introduction Station Method of inhibiting plant growth
NL268156A (fr) * 1960-08-22
BE611864A (fr) * 1961-12-22
US3650741A (en) * 1968-03-25 1972-03-21 Agfa Gevaert Nv Silver complex diffusion transfer process
DE2247893A1 (de) * 1972-09-29 1974-04-11 Agfa Gevaert Ag Supersensibilisiertes photographisches material
US4076539A (en) * 1973-07-23 1978-02-28 Fuji Photo Film Co., Ltd. Process for preparing silver halide dispersions
JPS5917825B2 (ja) * 1975-08-02 1984-04-24 コニカ株式会社 高コントラスト銀画像の形成方法
JPS5917820B2 (ja) * 1977-01-26 1984-04-24 コニカ株式会社 高コントラスト銀画像の形成方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2944902A (en) * 1956-07-30 1960-07-12 Eastman Kodak Co Sensitization of photographic emulsions with ionic polyalkylene oxide salts
US3113026A (en) * 1959-01-19 1963-12-03 Gen Aniline & Film Corp Polyvinyl alcohol photographic silver halide emulsions

Also Published As

Publication number Publication date
FR949229A (fr) 1949-08-24
US2271622A (en) 1942-02-03

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