Photographic color developer solution stabilized with lithium ions
    31.
    发明授权
    Photographic color developer solution stabilized with lithium ions 失效
    摄影彩色开发商解决方案稳定了锂离子

    公开(公告)号:US3839045A

    公开(公告)日:1974-10-01

    申请号:US36816773

    申请日:1973-06-08

    申请人: EASTMAN KODAK CO

    发明人: BROWN J

    IPC分类号: C02F5/14 G03C5/305 G03C5/30

    CPC分类号: G03C5/3053 C02F5/14

    摘要: WHEREIN R is a lower alkyl radical having from one to five carbon atoms, inhibits the formation of the white precipitate characteristically produced when sequestrants of this type are used to sequester ions of heavy metals such as calcium. Alkali metal, ammonium and ethanolamine salts of compounds of the above formula and mono and dialkyl esters thereof with methanol, ethanol, propanol and butanol also provide useful sequestering agents.

    The incorporation of small amounts of lithium ion into a solution of a heavy metal sequestering agent of the formula:

    摘要翻译: 将少量锂离子掺入下式的重金属螯合剂的溶液中:

    Photographic color developing composition containing calcium ion sequestering agent combination and method of use
    40.
    发明授权
    Photographic color developing composition containing calcium ion sequestering agent combination and method of use 失效
    含有钙离子螯合剂的摄影彩色显影组合物及其使用方法

    公开(公告)号:US06645709B1

    公开(公告)日:2003-11-11

    申请号:US10216942

    申请日:2002-08-12

    IPC分类号: G03C7413

    摘要: Concentrated and working strength photographic color developing compositions are stabilized with the inclusion of two specific types of calcium ion sequestering agents. One of the sequestering agents is a polyelectrolyte such as a polycarboxylic acid or salt thereof having a molecular weight of from about 2000 to about 100,000. The other one is a non-polymeric aminocarboxylic acid, polyphosphonic acid, or a salt thereof. The weight ratio of the first calcium ion sequestering agent to the second calcium ion sequestering agent is from about 1:1 to about 20:1. These compositions can be used to process color photographic materials such as color photographic papers.

    摘要翻译: 浓缩和加工强度的照相彩色显影组合物通过包含两种特定类型的钙离子螯合剂来稳定。 螯合剂之一是分子量为约2000至约100,000的聚电解质,例如多元羧酸或其盐。 另一种是非聚合氨基羧酸,多膦酸或其盐。 第一钙离子螯合剂与第二钙离子螯合剂的重量比为约1:1至约20:1。 这些组合物可用于处理彩色照相材料,例如彩色照相纸。