会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 5. 发明授权
    • Process for preparing a photographic emulsion comprising silver halide grains with high silver chloride content
    • 包含具有高氯化银含量的卤化银颗粒的照相乳剂的方法
    • US06218098B1
    • 2001-04-17
    • US09388745
    • 1999-09-02
    • Pierre-Henri JezequelChristian S. Schmuckle
    • Pierre-Henri JezequelChristian S. Schmuckle
    • G03C1015
    • G03C1/015G03C1/035G03C2001/03541
    • A process for the preparation of a high chloride silver halide grain emulsion in which at least 50% of the projected area of the emulsion grains is accounted for by cubic grains, said process comprising: i) precipitating an intermediate emulsion containing high chloride cubic nuclei having an average edge length less than or equal to 0.07 &mgr;m, by adding to an external continuous reactor at least one silver salt aqueous solution, a chloride salt aqueous solution and a hydrophilic colloid aqueous solution, in conditions so that (Qgel*Tgel)/(Qag*CAg) is more than 100, wherein Qgel is the flow rate of the hydrophilic colloid aqueous solution, Tgel is the hydrophilic colloid content of the hydrophilic colloid solution (g/l), QAg is the flow rate of the silver salt aqueous solution, CAg is the silver concentration of the silver salt aqueous solution (mole/l) and is comprised between 0.01 and 5 moles/l, the average pCl in the external reactor being between 1.7 and 3.5, ii) continuously transferring the intermediate emulsion containing the cubic nuclei from the external continuous reactor to a storage vessel, iii) stabilizing the nuclei by the addition of a growth inhibitor in an amount such as the nuclei coverage by the growth inhibitor is at least 20%, and iv) growing the nuclei of the intermediate emulsion to obtain a high chloride emulsion comprising cubic grains by adding a silver salt aqueous solution and a halide salt aqueous solution provided that the silver salt solution is added with a flow rate that does not lead the formation of new stable nuclei.
    • 一种制备高氯化物卤化银颗粒乳剂的方法,其中至少50%的乳剂颗粒的投影面积占立方晶粒,所述方法包括:i)沉淀含有高氯化物立方晶核的中间乳液,其具有 平均边缘长度小于或等于0.07μm,通过在外部连续反应器中将至少一种银盐水溶液,氯化物盐水溶液和亲水胶体水溶液加入到(Qgel * Tgel)/( Qag * CAg)超过100,其中Qgel是亲水胶体水溶液的流速,Tgel是亲水胶体溶液的亲水胶体含量(g / l),QAg是银盐水溶液的流速 ,CAg是银盐水溶液的银浓度(摩尔/升),为0.01〜5摩尔/升,外部反应器中的平均pCl为1.7〜3.5,ii)连续转印 将含有立方晶核的中间体乳液从外部连续反应器中环到储存容器中,iii)通过加入诸如生长抑制剂的细胞核覆盖度的生长抑制剂稳定核至少20%,和) 通过加入银盐水溶液和卤化物盐水溶液生长中间体乳液的核,得到含有立方晶粒的高氯化物乳液,条件是银盐溶液加入的流速不会导致形成新的稳定 细胞核