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    • 8. 发明授权
    • Fine polymer particles having heterogeneous phase structure
    • 具有异质相结构的聚合物微粒
    • US6027805A
    • 2000-02-22
    • US103936
    • 1998-06-25
    • Junichi YamanouchiHidetoshi WatanabeKunio IshigakiSeiichi YamamotoKouta Fukui
    • Junichi YamanouchiHidetoshi WatanabeKunio IshigakiSeiichi YamamotoKouta Fukui
    • C08F279/02C08L51/00C08L51/04C08L51/06C08L53/00C08L53/02G03C1/053G03C1/95G03C5/26G03C5/30G03C5/305G03C5/31C08F279/00
    • G03C5/30C08F279/02C08L51/00C08L51/04C08L51/06C08L53/00C08L53/02G03C1/053G03C1/95G03C5/26G03C5/265G03C5/3021G03C5/3035G03C5/305G03C5/31Y10T428/2984Y10T428/2987Y10T428/2989
    • Latex polymer of fine particles having a heterogeneous phase structure which comprises a core of a polymer having repeating units derived from a conjugated diene monomer and a shell of a polymer having repeating units derived from at least one ethylenically unsaturated monomer carrying an active methylene group; a silver halide photographic light-sensitive material comprises a core/shell latex polymer whose shell consists of a polymer having repeating units of an ethylenically unsaturated monomer represented by the formula: CH.sub.2 .dbd.C(R.sup.1)--L--X (wherein R.sup.1 represents H, alkyl or halogen, L represents a single bond or a bivalent coupling group, X represents an active methylene group, provided that L is bonded to X in the form of alkylene; and a method for forming images on a silver halide light-sensitive material which comprises exposing the material which comprises at least one light-sensitive silver halide emulsion layer and at least one hydrophilic colloidal layer either of which comprises a latex polymer having active methylene groups and developing the exposed material with a developer which comprises a dihydroxybenzene developing agent and an auxiliary developing agent showing superadditivity, the pH increase observed when adding 0.1 mole/l developer of NaOH to the developer .ltoreq.0.25; 9.5.ltoreq. initial pH of the developer .ltoreq.11.0; the amount of the developer supplemented .ltoreq.225 ml/ml.sup.2.
    • 具有非均相结构的细颗粒的乳胶聚合物,其包含具有衍生自共轭二烯单体的重复单元的聚合物芯和具有衍生自至少一种带有活性亚甲基的烯属不饱和单体的重复单元的聚合物的壳; 卤化银照相感光材料包括核/壳胶乳聚合物,其壳由具有由式:CH 2 = C(R 1)-LX(其中R 1表示H的烷基或烷基)的烯属不饱和单体的重复单元的聚合物组成, 卤素,L表示单键或二价偶联基团,X表示活性亚甲基,条件是L以亚烷基的形式键合到X;以及在卤化银感光材料上形成图像的方法,其包括曝光 所述材料包含至少一种感光卤化银乳剂层和至少一种亲水性胶体层,其中任一种包含具有活性亚甲基的胶乳聚合物,并用显影剂显影所述外露材料,所述显影剂包含二羟基苯显影剂和辅助显影剂 显示超加性剂,当向显影剂添加0.1mol / l NaOH显影剂时观察到的pH增加