公开(公告)号：US4990435A

公开(公告)日：1991-02-05

申请号：US940903

申请日：1986-12-10

申请人： Angelo Vallarino ,  Mauro Besio ,  Lorenzo Vittore

发明人： Angelo Vallarino ,  Mauro Besio ,  Lorenzo Vittore

IPC分类号： G03C1/04 ,  G03C1/053 ,  G03C1/06 ,  G03C7/388

CPC分类号： G03C7/3882

摘要： A polymeric latex to load photographically useful compounds into photographic elements comprises, as a dispersed phase, fine particles of a hydrophobic polymer which, for at least 70% of its weight, comprises:(a) repeating units derived from an ethylenic monomer containing a sulfonic or sulfonate group which monomer is capable of forming hydrophilic homopolymers, said units comprising 0.5 to 1.5% by weight of said hydrophobic polymer,(b) repeating units derived from an N-3-oxo-alkyl-substituted acrylamide, said units comprising from 5 to 25% by weight of said hydrophobic polymer, and(c) repeating units derived from acrylic acid ester monomers having a TG lower than 0.degree. C., said units comprising at least 43.5% by weight of said hydrophobic polymer,the remaining polymer weight percentage, from zero to 30%, being formed by repeating units derived from inert monomers and/or cross-linking monomers.Such polymeric latex can be loaded with hydrophobic compounds to obtain stable coating compositions which are suitable for a uniform dispersion in a hydrophilic layer of a photographic material.

摘要翻译： 将摄影有用的化合物加载到照相元件中的聚合物胶乳包含作为分散相的疏水性聚合物的细颗粒，其至少70％的重量包含：（a）衍生自含有磺酸的烯属单体的重复单元 或单体能够形成亲水均聚物的磺酸盐基团，所述单元包含0.5至1.5重量％的所述疏水性聚合物，（b）衍生自N-3-氧代 - 烷基取代的丙烯酰胺的重复单元，所述单元包含5 至25重量％的所述疏水性聚合物，和（c）衍生自TG低于0℃的丙烯酸酯单体的重复单元，所述单元包含至少43.5重量％的所述疏水性聚合物，剩余的聚合物重量 百分数，从零到30％，由衍生自惰性单体和/或交联单体的重复单元形成。 这样的聚合胶乳可以加载疏水性化合物，以获得适合在照相材料的亲水层中均匀分散的稳定的涂料组合物。

公开(公告)号：US4447525A

公开(公告)日：1984-05-08

申请号：US419403

申请日：1982-09-17

申请人： Angelo Vallarino ,  Lorenzo Vittore

发明人： Angelo Vallarino ,  Lorenzo Vittore

IPC分类号： G03C1/32 ,  G03C1/04 ,  G03C1/76 ,  G03C1/95 ,  G03C1/78

CPC分类号： G03C1/95 ,  Y10S430/151

摘要： A matt surface can be provided on a photographic material comprising a support base, one or more light-sensitive gelatin silver halide emulsion layers and an outer non-light-sensitive gelatin layer coated on said layers if discrete particles, insoluble in water and substantially soluble in aqueous alkaline medium, of a carboxyl group containing copolymer are introduced into said outer layer. The particles, of a diameter between 0.5 and 4 micron, are introduced into the coating composition of the outer layer as a dispersion of a methacrylic acid and ethylmethacrylate copolymer containing 20 to 50 percent by weight of methacrylic acid, which dispersion is obtained by dispersing in an aqueous solution of a hydrophilic colloid a solution of said copolymer in ethylacetate or water-including ethylacetate.

摘要翻译： 可以在包含支撑基底，一个或多个光敏明胶卤化银乳剂层和涂覆在所述层上的外部非光敏明胶层的照相材料上提供哑光表面，如果离散的颗粒不溶于水并且基本上可溶 在碱性水溶液中含有羧基的共聚物引入所述外层。 将直径在0.5至4微米之间的颗粒作为含有20至50重量％甲基丙烯酸的甲基丙烯酸和甲基丙烯酸乙酯共聚物的分散体引入外层的涂料组合物中，该分散体通过分散在 亲水胶体的水溶液，所述共聚物在乙酸乙酯或含水乙酸乙酯中的溶液。