5,5{40 ,6,6{40 -Tetrahydroxy-3,3,3{40 ,3{40 -tetramethyl-bis-spirohydrindene auxiliary developers
    4.
    发明授权
    5,5{40 ,6,6{40 -Tetrahydroxy-3,3,3{40 ,3{40 -tetramethyl-bis-spirohydrindene auxiliary developers 失效
    5,5 {40,6,6 {40-四羟基-3,3,3 {40,3 {40-四甲基 - 双 - 螺氢茚]辅助显影剂

    公开(公告)号:US3909263A

    公开(公告)日:1975-09-30

    申请号:US42496173

    申请日:1973-12-14

    CPC分类号: G03C8/16

    摘要: A photographic diffusion transfer color process comprising image exposing a photographic material having at least a silver halide emulsion layer and a layer containing a dye developer adjacent the silver halide emulsion layer and then treating the exposed silver halide emulsion layer with an alkaline solution to immobilize the dye developer at the exposed area while the dye developer at the unexposed area of the silver halide emulsion layer is transferred by diffusion to an image-receiving material, wherein the alkaline solution treatment is conducted in the presence of 5,5'',6,6''-tetrahydroxy-3,3,3'',3''-tetramethyl-bis1,1''-spirohydrindene.

    摘要翻译: 一种照相扩散转印着色方法,包括使至少具有卤化银乳剂层的照相材料和包含与卤化银乳剂层相邻的染料显影剂的层的图像曝光,然后用碱性溶液处理暴露的卤化银乳剂层以固定染料 显影剂,而卤化银乳剂层的未曝光区域的染料显影剂通过扩散转移到图像接收材料中,其中碱溶液处理在5,5',6,6' - 四羟基-3,3,3',3'-四甲基 - 双-1,1'-螺二氢茚。

    N-substituted triarylmethane sulfonamides and method of preparation
    10.
    发明授权
    N-substituted triarylmethane sulfonamides and method of preparation 失效
    N-取代三芳基甲烷磺酰胺及其制备方法

    公开(公告)号:US5399709A

    公开(公告)日:1995-03-21

    申请号:US076213

    申请日:1993-06-11

    摘要: A novel class of N-substituted triarylmethane sulfonamides is provided which undergo reversible oxidation into colored form and reversible reduction of the oxidized form into colorless form. The N-substituted triarylmethane sulfonamides can be represented by the formulae: ##STR1## wherein B is a carbocyclic ring or rings; T is a 5- or 6-membered ring; Y is a moiety selected from ##STR2## wherein E, positioned ortho or para to said --OH group, is selected from --OH, --NH.sub.2, --NHR', --NR'R" and --NHSO.sub.2 R' wherein R' and R" each are lower alkyl groups having 1 to 6 carbon atoms or aralkyl wherein the aryl portion may be substituted with alkyl groups having 1 to 24 carbon atoms, and E' is hydrogen or a monovalent group that is substituted on one of the remaining carbon atoms; G and G' each are hydroxy or methoxy, provided one is hydroxy and the other is methoxy; and Z and Z' taken individually represent the moieties to complete the chromophoric system of a triarylmethane dye when said N-containing ring, T, is open and Z and Z' taken together represent the bridged moieties to complete the chromophoric system of a bridged triarylmethane dye when said N-containing ring, T, is open; and Y' represents the quinoid form of Y. Preferred embodiments comprise xanthene sulfonamides having N-aryl substituents, e.g., hydroquinone substituents. These compounds possess redox potentials ranging between about +200 to -500 millivolts and thus are useful as dyes for producing photographic, photothermographic, thermal, and pressure-induced images, as well as being useful as redox indicators in a wide variety of biological and chemical reactions.

    摘要翻译: 提供了一类新的N-取代的三芳基甲烷磺酰胺,其经历可逆的氧化成着色形式,并将氧化形式可逆地还原成无色形式。 N-取代的三芳基甲烷磺酰胺可以由下式表示:其中B是碳环或环; T是5-或6-元环; Y是选自图像(a)和(b)中的部分,其中位于所述-OH基团的邻位或对位的E选自-OH,-NH 2,-NHR',-NR'R' '和-NHSO 2 R',其中R'和R“各自是具有1至6个碳原子的低级烷基或芳烷基,其中芳基部分可以被具有1至24个碳原子的烷基取代,并且E'是氢或一价 在其余碳原子上被取代的基团; G和G'各自为羟基或甲氧基,其中一个为羟基,另一个为甲氧基; 并且Z和Z'分别表示当所述含N环T是开放的且Z和Z'代表桥连部分以完成桥联三芳基甲烷的发色体系时完成三芳基甲烷染料的发色体系的部分 当所述含氮环T为开时染色; Y'表示Y的醌型。优选的实施方案包括具有N-芳基取代基的呫吨磺酰胺,例如氢醌取代基。 这些化合物具有范围在约+200至-500毫伏之间的氧化还原电位,因此可用作产生照相,光热照相,热和压力诱导图像的染料,并且可用作各种生物和化学品中的氧化还原指示剂 反应。