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    Method for developing photographic materials
    2.
    发明授权
    Method for developing photographic materials 失效
    开发摄影材料的方法

    公开(公告)号：US3682634A

    公开(公告)日：1972-08-08

    申请号：US3682634D

    申请日：1970-09-22

    Applicant: AGFA GEVAERT NV

    Inventor： WILLEMS JOZEF FRANS

    IPC: G03C1/42 ,  G03C5/29 ,  G03C5/305 ,  G03C5/54 ,  G03C1/06 ,  G03C5/30

    CPC classification number: G03C5/3056

    Abstract: PHOTOGRAPHIC DEVELOPING METHODS ARE DESCRIBED WHEREIN AN EXPOSED SILVER HALIDE EMULSION LAYER OF A PHOTOGRAPHIC MATERIAL IS DEVELOPED WITH AN AQUEOUS ALKALINE COMPOSITION IN THE PRESENCE OF A N,N-DIALKYLHYDROXYLAMINE DEVELOPING AGENT AND A QUATERNARY AMMONIUM COMPOUND HAVING THE FORMULA

    $-(CH2)2-(OCH2CH2)N-1-R$X-

    WHEREIN

    $ STANDS FOR A QUATERNARY AMMONIUM GROUP EITHER CYCLIC OR ACYCLIC, R STANDS FOR AN ALKYL GROUP CONPRISING FROM 7 TO 20 CATOMS OR FOR THE GROUP

    Q(+)-(CH2)X-(O-(CH2)2)(N-1)-R X(-)

    X- IS AN ANION N STANDS FOR AN INTEGER FROM 1 TO 250, N BEING AT LEAST 2 WHEN R STANDS FOR ALKYL, AND X STANDS FOR 2 WHEN N IS DIFFERENT FROM U AND FOR AN INTERGER FROM 2 TO 16 WHEN N=1.

    THE DEVELOPMENT IS ACCELERATED WITHOUT ADVERSE EFFECTS.

    Sulphonated s-alkyl and s-aralkyl thiosulphates
    3.
    发明授权
    Sulphonated s-alkyl and s-aralkyl thiosulphates 失效
    磺化的S-烷基和S-阿拉伯基硫代磷酸酯

    公开(公告)号：US3607904A

    公开(公告)日：1971-09-21

    申请号：US3607904D

    申请日：1968-05-08

    Applicant: AGFA GEVAERT NV

    Inventor： WILLEMS JOZEF FRANS ,  HEUGEBAERT FRANS CLEMENT

    IPC: C07C381/02 ,  G03C1/09 ,  G03C1/34 ,  G03C5/38 ,  C07C139/00 ,  C07C141/00

    CPC classification number: G03C1/09 ,  C07C381/02 ,  G03C1/34 ,  G03C5/38

    Abstract: A process of preparing an S-alkyl or S-aralkyl thiosulphate compound having the formula: MO3S-L1-L2-L3-S-SO3M comprising the steps of mixing an intramolecular ester having the formula: WITH AN AQUEOUS SOLUTION CONTAINING AN INORGANIC THIOSULPHATE AND HEATING THE MIXTURE, WHEREIN EACH OF L1 and L3 stands for a methylene group, and L2 stands for an alkylene group comprising from 1 to 3 carbon atoms in straight line, or L1 together with L2 stands for the group WHEREIN Z represents the atoms necessary to close an aromatic nucleus, and M stands for a metal atom such as an alkali metal atom or an ammonium group, is described. The compounds are useful in photographic silver halide emulsions.

    Photographic light-sensitive material
    4.
    发明授权
    Photographic light-sensitive material 失效
    摄影感光材料

    公开(公告)号：US3554758A

    公开(公告)日：1971-01-12

    申请号：US3554758D

    申请日：1967-12-07

    Applicant: AGFA GEVAERT NV

    Inventor： WILLEMS JOZEF FRANS ,  THIERS ROBRECHT JULIUS

    IPC: G03C1/09 ,  G03C1/34

    CPC classification number: G03C1/346 ,  G03C1/09

    Abstract: A LIGHT-SENSITIVE MATERIAL COMPRISING A SILVER HALIDE EMULSION LAYER CONTAINING AN IODONIUM COMPOUND CORRESPONDING TO ONE OF THE FOLLOWING FORMULAE:

    (PHENYL)2-I(+) Y(-) . HGX2 AND

    DIBENZIODOLIUM Y(-) . HGX2

    WHEREIN Y- REPRESENTS AN ANION AND X REPRESENTS A HALOGEN ATOM HAVING AN ATOMIC NUMBER GREATER THAN 9 IS DESCRIBED. THE IODONIUM COMPOUND STABILIZES THE EMULSION AGAINST ANY INCREASE IN FOG WITHOUT SUBSTANTIAL DESENSITIZATION OF THE EMULSION.

    Photographic development process
    5.
    发明授权
    Photographic development process 失效
    摄影发展过程

    公开(公告)号：US3552968A

    公开(公告)日：1971-01-05

    申请号：US3552968D

    申请日：1967-07-05

    Applicant: AGFA GEVAERT NV

    Inventor： WILLEMS JOZEF FRANS

    IPC: C07F9/6581 ,  C08G65/327 ,  G03C1/043 ,  G03C5/30 ,  G03C1/02 ,  G03C1/48

    CPC classification number: G03C1/043 ,  C07F9/65814 ,  C08G65/327 ,  Y10S430/15

    Abstract: A PHOTOGRAPHIC LIGHT-SENSITIVE MATERIAL COMPRISING A SILVER HALIDE EMULSION LAYER CONTAINING A COMPOUND CORRESPONDING TO ONE OF THE FOLLOWING STRUCTURAL FORMULAE IA OR IB:

    2-A1,2-Z1,4-A2,4-Z2,6-A3,6-Z3-1,3,5,2,4,6-

    TRIAZATRIPHOSPHORINE OR

    2-A1,2-Z1,4-A2,4-Z2,6-A3,6-Z3,8-A4,8-Z4-1,3,5,7,2,4,6,8-

    TETRAZATETRAPHOSPHOCINE

    WHEREIN:

    EACH OF A1, A2, A3, A4, Z1, Z2, Z3, AND Z4 STANDS FOR A CHLORINE ATOM OR A POLYOXYALKYLENE GROUP OF THE FORMULA -(OR1)N-X, AT LEAST ONE OF THE GROUPS A1, A2, A3, A4, Z1, Z2, Z3, OR Z4 BEING THE GROUP -(OR1)N-X WHEREIN N REPRESENTS AN INTEGER OF AT LEAST 5, THE

    -(OR1)-

    GROUP REPRESENTING REPEATING UNITS ENTIRELY CONSISTING OF ETHYLENE OXIDE UNITS OR A MIXTURE OF ETHYLENE OXIDE UNITS AND PROPYLENE OXIDE UNITS, AND X BEING A TERMINAL GROUP THAT IS UNREACTIVE WITH RESPECT TO AN ACTIVE HALOGEN ATOM OF AN ACID HALIDE COMPOUND AND IS SELECTED FROM THE GROUP CONSISTING OF

    -O-R, -OOC-R, -S-R, OR -N(-R)2

    WHEREIN R IS AN ALKYL, AN ARYL, A CYCLOALKYL, OR A HETEROCYCLIC RADICAL, SAID RADICALS BEING UNREACTIVE WITH RESPECT TO SAID ACTIVE HALOGEN ATOM IS DESCRIBED. THE SILVER HALIDE EMULSION HAS A HIGH DEVELOPING ACTIVATION IN COMBINATION WITH A VERY LOW FOG PRODUCTION.

    Selenium compound antifoggant for silver halide emulsion
    9.
    发明授权
    Selenium compound antifoggant for silver halide emulsion 失效
    硒化合物防腐剂用于银盐乳化剂

    公开(公告)号：US3681078A

    公开(公告)日：1972-08-01

    申请号：US3681078D

    申请日：1970-06-24

    Applicant: AGFA GEVAERT NV

    Inventor： POLLET ROBERT JOSEPH ,  WILLEMS JOZEF FRANS

    IPC: C07D277/64 ,  C07F9/54 ,  G03C1/34

    CPC classification number: G03C1/346 ,  C07D277/64 ,  C07F9/54

    Abstract: R1, R2, AND R3 EACH REPRESENTING ALKYL, ARALKYL OR ARYL AND X-IS AN ANION WHEN R ITSELF DOES NOT CONTAIN AN ANIONIC GROUP. THESE PHOTOGRAPHIC MATERIALS HAVE DECREASED FORGGING TENDENCY, EVEN UNDER CONDITIONS OF HIGH TEMPERATURE AND HUMIDITY, AND THEIR SENSITIVITY IS PRACTICALLY NOT LOWERED BY THE PRESENCE OF THESE SELENIUM COMPOUNDS.

    -P(+)(-R1)(-R2)(-R3) X(-)

    PHOTOGRAPHIC MATERIAL ARE PROVIDED WHICH COMPRISE IN A LIGHT-SENSITIVE SILVER HALIDE EMULSION LAYER OR IN AN ADJACENT WATER-PERMEABLE LAYER A SELENIUM COMPOUND OF THE FORMULA R-SE-Q WHEREIN R STAND FOR ALKYL, ARALKYL, ALKARYL OR ARYL WHICH MAY BE SUBSTITUTED BY HALOGEN, SULPHO, CARBOXYL OR NITRO OR FORM PART OF A HETEROCYCLIC RING SYSTEM AND O STANDS FOR HALOGEN, CYANA OR

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