公开(公告)号：US5372919A

公开(公告)日：1994-12-13

申请号：US35078

申请日：1993-03-22

申请人： Ralph B. Nielsen ,  David T. Southby ,  Katherine Root ,  Hwei-Ling Yau

发明人： Ralph B. Nielsen ,  David T. Southby ,  Katherine Root ,  Hwei-Ling Yau

IPC分类号： G03C1/06 ,  G03C7/305 ,  G03C5/26 ,  C08F220/40 ,  C08F232/00 ,  G03C7/32

CPC分类号： G03C7/305 ,  Y10S430/156 ,  Y10S430/157 ,  Y10S430/158 ,  Y10S430/159 ,  Y10S430/161

摘要： A polymeric material is provided comprising a blocked photographically useful group (PUG). The incorporated blocked photographically useful group includes a PUG and a blocking group that is capable of releasing the PUG upon processing the photographic element, wherein the blocking group(a) is capable of reacting with a dinucleophile reagent, and(b) comprises two electrophilic groups that are separated from each other by a substituted atom that enables a nucleophilic displacement reaction to occur with release of PUG upon processing the photographic element in the presence of a dinucleophile reagent, wherein the group that is less electrophilic is bonded directly or through at least one releasable timing group to the PUG.Photographic elements and emulsions including the inventive polymers, and processes for developing an image in the elements, are also provided.

摘要翻译： 提供聚合物材料，其包含封闭的照相用组（PUG）。 结合的封闭照相用组包括PUG和能够在处理照相元件时释放PUG的封闭基团，其中阻断基团（a）能够与双亲试剂反应，和（b）包含两个亲电子基团 其通过取代原子彼此分离，其在亲核试剂存在下处理照相元件时能够亲核置换反应发生，同时释放PUG，其中较少亲电子的基团直接键合或通过至少一个 可释放时间组到PUG。 还提供了包括本发明聚合物的摄影元件和乳液，以及用于在元件中显影图像的方法。

公开(公告)号：US5223581A

公开(公告)日：1993-06-29

申请号：US837800

申请日：1992-02-19

申请人： Ralph B. Nielsen ,  David T. Southby ,  Katherine Root ,  Hwei-Ling Yau

发明人： Ralph B. Nielsen ,  David T. Southby ,  Katherine Root ,  Hwei-Ling Yau

IPC分类号： G03C1/06 ,  G03C7/305

CPC分类号： G03C7/305 ,  Y10S430/156 ,  Y10S430/157 ,  Y10S430/158 ,  Y10S430/159 ,  Y10S430/161

摘要： A polymeric material is provided comprising a blocked photographically useful group (PUG). The incorporated blocked photographically useful group includes a PUG and a blocking group that is capable of releasing the PUG upon processing the photographic element, wherein the blocking group(a) is capable of reacting with a dinucleophile reagent, and(b) comprises two electrophilic groups that are separated from each other by a substituted atom that enables a nucleophilic displacement reaction to occur with release of PUG upon processing the photographic element in the presence of a dinucleophile reagent, wherein the group that is less electrophilic is bonded directly or through at least one releasable timing group to the PUG.Photographic elements and emulsions including the inventive polymers, and processes for developing an image in the elements, are also provided.