公开(公告)号：US06303284B1

公开(公告)日：2001-10-16

申请号：US09645743

申请日：2000-08-24

申请人： Lloyd A. Lobo ,  Sridhar Sadasivan ,  Seshadri Jagannathan ,  Jerzy A. Budz ,  David C. Gliottone ,  John W. Boettcher

发明人： Lloyd A. Lobo ,  Sridhar Sadasivan ,  Seshadri Jagannathan ,  Jerzy A. Budz ,  David C. Gliottone ,  John W. Boettcher

IPC分类号： G03C1005

CPC分类号： G03C1/06 ,  G03C1/005 ,  G03C1/047

摘要： A process for forming a silver halide photographic emulsion is disclosed comprising precipitating silver halide grains in an aqueous dispersing medium to which has been added silver and halide salt solutions while agitating the dispersing medium, wherein the precipitation is done in the presence of an antifoamant which comprises a hydrophobic group containing nonionic mono- or di-saccharide compound having an HLB number of between 2 and 12. The antifoamant material may be delivered to the aqueous dispersing medium as a small particle dispersion, made with the same peptizer used for manufacturing the emulsion or another stabilizer. A further embodiment of the invention is directed towards a silver halide photographic material comprising a support upon which is coated at least one light sensitive silver halide emulsion layer, comprising a silver halide emulsion precipitated in accordance with the described process.

摘要翻译： 公开了一种形成卤化银照相乳剂的方法，其包括在水分散介质中沉淀卤化银颗粒，在其中加入银和卤化物盐溶液同时搅拌分散介质，其中沉淀在消泡剂存在下进行， 含有HLB数为2至12的非离子单糖或二糖化合物的疏水基团。消泡剂材料可以作为小颗粒分散体递送到水分散介质中，用与制造乳液相同的胶溶剂制成， 另一种稳定剂。 本发明的另一个实施方案涉及一种包含载体的卤化银照相材料，其上涂覆有至少一种感光卤化银乳剂层，其包含根据所述方法沉淀的卤化银乳剂。

公开(公告)号：US06326134B1

公开(公告)日：2001-12-04

申请号：US09645625

申请日：2000-08-24

申请人： Lloyd A. Lobo ,  Sridhar Sadasivan ,  John W. Boettcher ,  Seshadri Jagannathan ,  Jerzy A. Budz ,  David C. Gliottone

发明人： Lloyd A. Lobo ,  Sridhar Sadasivan ,  John W. Boettcher ,  Seshadri Jagannathan ,  Jerzy A. Budz ,  David C. Gliottone

IPC分类号： G03C1005

CPC分类号： G03C1/043 ,  G03C1/005 ,  G03C1/047 ,  G03C2001/7448

摘要： A process for forming a silver halide photographic emulsion is disclosed comprising precipitating silver halide grains in an aqueous dispersing medium to which has been added silver and halide salt solutions while agitating the dispersing medium, wherein the precipitation is done in the presence of an antifoamant compound of the formula RO(CH2CH2O)nH wherein R represents an alkyl or alkenyl group containing 10 to 25 carbon atoms, or mixtures thereof, and n represents a mean value of from 2 to 4. The antifoamant material may be delivered to the aqueous dispersing medium as a small particle dispersion, made with the same peptizer used for manufacturing the emulsion or another stabilizer. A further embodiment of the invention is directed towards a silver halide photographic material comprising a support upon which is coated at least one light sensitive silver halide emulsion layer, comprising a silver halide emulsion precipitated in accordance with the described process.

摘要翻译： 公开了一种形成卤化银照相乳剂的方法，其包括在水分散介质中沉淀卤化银颗粒，在其中加入银和卤化物盐溶液同时搅拌分散介质，其中沉淀是在消泡化合物 式RO（CH 2 CH 2 O）n H其中R表示含10至25个碳原子的烷基或链烯基，或其混合物，n表示平均值为2至4.消泡剂可以作为 由用于制造乳液或另一种稳定剂的相同胶溶剂制成的小颗粒分散体。 本发明的另一个实施方案涉及一种包含载体的卤化银照相材料，其上涂覆有至少一种感光卤化银乳剂层，其包含根据所述方法沉淀的卤化银乳剂。