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    • 4. 发明公开
    • Overcoat for reticulation control in photographic elements
    • Überzugzur Netzwerkkontrolle in fotografischen Elementen
    • EP1052542A1
    • 2000-11-15
    • EP00201558.4
    • 2000-05-01
    • EASTMAN KODAK COMPANY
    • Nair, Mridula, Eastman Kodak Company P.L.S.Lobo, Lloyd Anthony, Eastman Kodak Company P.L.S.Jones, Tamara Kay, Eastman Kodak Company P.L.S.
    • G03C1/76
    • G03C1/7614G03C2001/7635G03C2200/42G03C2200/47Y10S430/162
    • A photographic element containing a support; at least two contiguous layers, at least one of which is a silver halide emulsion layer superposed on a side of said support; a processing solution permeable protective overcoat containing a urethane-vinyl copolymer having acid functionalities wherein a weight ratio of a urethane component in the copolymer comprises from 20 to 100 percent and a weight ratio of a vinyl component in the copolymer comprises from 0 to 80 percent; a crosslinker for the said copolymer; and a second polymer selected from the group consisting of polyvinyl alcohol, cellulose ethers, n-vinyl amides, polyesters, poly(ethylene oxide), starch, proteins, whey, albumin, poly(acrylic acid), alginates and gums overlying the said at least two contiguous layers; and wherein the ratio of the gelatin to non-gelatin content of the dried layers immediately underlying the uppermost gelatin layer is less than 1.3 with the proviso that the water content of the wet coating of all the gelatin layers prior to drying is at a coverage of greater than 53g/m 2 .
    • 含有载体的摄影元件 至少两个连续的层,其中至少一个是重叠在所述载体的一侧上的卤化银乳剂层; 包含具有酸官能度的氨基甲酸酯 - 乙烯基共聚物的处理溶液可渗透保护外涂层,其中共聚物中的氨基甲酸酯组分的重量比为20-100%,共聚物中乙烯基组分的重量比为0-80%; 所述共聚物的交联剂; 和选自聚乙烯醇,纤维素醚,正乙烯基酰胺,聚酯,聚(环氧乙烷),淀粉,蛋白质,乳清,白蛋白,聚(丙烯酸),藻酸盐和树胶的第二种聚合物,覆盖在所述的 最少两个连续层; 并且其中刚刚在最上层明胶层下面的干燥层的明胶与非明胶含量的比例小于1.3,条件是干燥前所有明胶层的湿涂层的水含量为 大于53g / m 2。
    • 6. 发明公开
    • Protective overcoat for photographic elements
    • Schutzüberschichtfürphotographische Elemente
    • EP1022611A1
    • 2000-07-26
    • EP00200097.4
    • 2000-01-12
    • EASTMAN KODAK COMPANY
    • Nair, Mridula, Eastman Kodak CompanyJones, Tamara Kay, Eastman Kodak CompanyQiao, Tiecheng Alex, Eastman Kodak Company
    • G03C1/76
    • G03C1/7614G03C2001/7635G03C2200/42G03C2200/47Y10S430/162
    • The present invention is a photographic element which includes a support, at least one silver halide emulsion layer superposed on the support and a processing solution permeable protective overcoat overlying the silver halide emulsion layer. The processing solution permeable overcoat is composed of a urethane-vinyl copolymer having acid functionalities wherein a weight ratio of a urethane component in the copolymer comprises from 20 to 100 percent and a weight ratio of a vinyl component in the copolymer comprises from 0 to 80 percent and a second polymer composed of polyvinyl alcohol, cellulose ethers, n-vinyl amides, polyesters, poly(ethylene oxide), starch, proteins, whey, albumin, poly(acrylic acid), alginates or gums. The present invention is a method of making a photographic element which includes providing an photographic element having a support, a silver halide emulsion layer superposed on the support and a processing solution permeable protective overcoat overlying the silver halide emulsion layer. The processing solution permeable overcoat is composed of a urethane-vinyl copolymer having acid functionalities wherein a weight ratio of a urethane component in the copolymer comprises from 20 to 100 percent and a weight ratio of a vinyl component in the copolymer comprises from 0 to 80 percent and a second polymer composed of polyvinyl alcohol, cellulose ethers, n-vinyl amides, polyesters, poly(ethylene oxide), starch, proteins, whey, albumin, poly(acrylic acid), alginates or gums. The photographic element is developed in a developer solution having a pH greater than 7 and the processing solution permeable overcoat is fused.
    • 本发明是一种照相元件,它包括一个载体,至少一个叠加在载体上的卤化银乳剂层和覆盖在卤化银乳剂层上的可加工溶液渗透的保护性外涂层。 处理液可渗透外涂层由具有酸性官能团的聚氨酯 - 乙烯基共聚物组成,其中共聚物中的氨基甲酸酯组分的重量比为20-100%,共聚物中乙烯基组分的重量比为0-80% 和由聚乙烯醇,纤维素醚,正乙烯基酰胺,聚酯,聚(环氧乙烷),淀粉,蛋白质,乳清,白蛋白,聚(丙烯酸),藻酸盐或树胶组成的第二聚合物。 本发明是一种制造照相元件的方法,该方法包括提供具有载体的照相元件,叠置在载体上的卤化银乳剂层和覆盖在卤化银乳剂层上的可处理溶液渗透的保护性外涂层。 处理液可渗透外涂层由具有酸性官能团的聚氨酯 - 乙烯基共聚物组成,其中共聚物中的氨基甲酸酯组分的重量比为20-100%,共聚物中乙烯基组分的重量比为0-80% 和由聚乙烯醇,纤维素醚,正乙烯基酰胺,聚酯,聚(环氧乙烷),淀粉,蛋白质,乳清,白蛋白,聚(丙烯酸),藻酸盐或树胶组成的第二聚合物。 照相元件在pH大于7的显影剂溶液中显影,并且处理溶液可渗透的外涂层被熔合。
    • 7. 发明公开
    • Method for preparing tabular grains rich in silver chloride with reduced thickness growth and improved homogeneity
    • 一种生产高氯化银片状颗粒过程具有减少的厚度的生长和改善的均匀性
    • EP0932076A1
    • 1999-07-28
    • EP98200236.2
    • 1998-01-27
    • AGFA-GEVAERT N.V.
    • Verrept, PeterVerbeeck, AnnVermant, NadiaLouwet, Frank
    • G03C1/005
    • G03C1/0053G03C1/07G03C5/16G03C2001/0357G03C2001/03594G03C2200/03G03C2200/47
    • A method has been described for preparing a gelatinous emulsion having grains rich in silver choride, wherein at least 70 %, and more preferred 90%, of the total projected area of all grains is provided by {111} tabular grains having an average aspect ratio of more than 2:1, an average equivalent circular diameter of at least 0.3 µm and an average thickness of from 0.05 to 0.25 µm , wherein a procentual variation on average equivalent circular diameter of said tabular grains is 30 % or less and wherein a procentual variation on average thickness of said tabular grains is 20 % or less and wherein said tabular grains are present in procentual numerical amounts of at least 90 %, said method comprising following steps :

      preparing in a reaction vessel a dispersion medium comprising an initial amount of a crystal habit modifying agent;
      precipitating therein silver halide crystal nuclei by double-jet precipitation of an aqueous silver nitrate and an aqueous solution comprising halide ions, wherein less than 10 % by weight of a total amount of silver nitrate used is consumed;
      growing said silver halide crystal nuclei by further precipitation of silver halide by means of double-jet precipitation of an aqueous silver nitrate solution and an aqueous solution comprising halide ions, wherein more than 90 % by weight of a total amount of silver nitrate is consumed, characterized in that during at least one of the said steps at least one compound is added to the said reaction vessel, said compound being a hydrophilic amphoteric block copolymer containing (i) a non-ionic acrylic block comprising a sequence of units having pendant nitrile groups according to formula I given in the claims and (ii) a acrylamid(in)ic block comprising a sequence of units according to formula II given in the claims, said hydrophilic amphoteric block copolymer further comprising within said acrylamid(in)ic block(s) units having pendant acidic groups or salts thereof as well as units having pendant basic groups or salts thereof. Emulsions having tabular grains prepared according to the method of the present invention and light-sensitive silver halide photographic materials wherein said emulsions have been coated in light-sensitive layers have also been disclosed.
    • 一种方法,已经描述了用于制备具有所有颗粒的总投影面积的颗粒富含银的氯化物,worin至少70%,和更优选的90%,凝胶状乳液是由具有上的更平均纵横比ä111ü片状颗粒提供 比2:1上的至少0.3微米的平均等效圆直径,并在从0:05到0:25微米平均厚度,worin在所述片状颗粒的平均等效圆直径的变化procentual是30%或更少和worin一个procentual 在所述片状颗粒的平均厚度变化为20%或更少和worin所述片状颗粒中存在的至少90%procentual数值量,所述方法包括以下步骤:在反应容器中制备分散介质,其包括的初始量的 晶体习性改性剂; 在其中沉淀通过含水硝酸银的双喷嘴沉淀并在wässrige溶液包含卤离子,按重量计使用的被消耗的硝酸银的总量的worin小于10%的卤化银晶核; 通过硝酸银水溶液的双注沉淀法生长由卤化银的进一步沉淀。所述卤化银晶核和按重量计的硝酸银的总量被消耗到wässrige溶液包含卤化物离子,worin 90%以上, 其特征在于,所述至少一个期间所做步骤中的至少一种化合物加入到所述反应容器,所述的化合物是(i)含有非离子型丙烯酸类嵌段包括具有腈基侧基单元的序列的亲水性两性嵌段共聚物 雅丁式I中的权利要求中给出,和(ii)一个丙烯酰胺(在)的IC块包含的单元的序列雅丁式II的权利要求中给出,所述亲水两性嵌段共聚物还(在)的IC块。所述丙烯酰胺中含有(S 具有含碱性侧链基或其盐侧链酸性基团或其盐以及单位)为单位。 具有片状颗粒乳剂制备雅丁到本发明和光敏感的卤化银照相材料的worin所述乳液已涂覆在光敏层因此一直游离缺失盘的方法。
    • 9. 发明公开
    • Benzotriazole based UV absorbing monomers and photographic elements containing polymers formed from them
    • 包含基于苯并三唑和照相元件的紫外线吸收单体,由其制备的聚合物
    • EP0704754A2
    • 1996-04-03
    • EP95202576.5
    • 1995-09-23
    • EASTMAN KODAK COMPANY
    • Vishwakarma, Lal Chand
    • G03C1/815
    • G03C1/8155C07D249/20C08K5/3475G03C1/34G03C2200/47
    • An ultraviolet absorbing monomer of formula (A):

      wherein: R₄ and R5 are, independently, a substituted or unsubstituted alkylene with or without intervening oxygen, sulfur or nitrogen atoms; R₆ is H or a substituted or unsubstituted methyl; and the benzo ring, the hydroxy substituted phenyl ring and the phenyl ring of the styryl group may be further substituted or unsubstituted. A method of making such monomers and photographic elements containing UV absorbing polymers formed from such monomers are also provided.
    • 照相元件包含与来自单体(I)DERIV重复单元的UV吸收聚合物。 R4和R5 =选择substd亚烷基与选择居间O,S或N原子,该substits为1-10C烷氧基,烷基1-10C硫化物,0〜10℃的氨基或卤素; R6 = H或CH 3选择substd卤素; 与苯并环和两个环是由GPS苯基选择substd而不unsatd CC债券,substits为1-18C的烷基,芳基,杂芳基,芳氧基,烷氧基或卤素,烷基和烷氧基被1-5个具有substits选择居间ö ,S或N原子或苯并环可具有稠合的苯并,吡咯基,呋喃基或噻吩基环。 (II)中包含的任一乳剂层或不同的层,以便声称是具有光敏卤化银乳剂层和与衍生自单体的单元的UV吸收聚合物的照相元件。 R1,R2和R3 = H,卤素或选择substd烷基,烷氧基,芳基,杂芳基或芳氧基,烷基或烷氧基选择contg居间1-5 O,S或N原子和substits为1-17C烷氧基,1-17C 烷基硫醚,0-17C氨基或卤素,或R1 + R2完整或具有1-17C的烷基,1-17C烷氧基或卤素的芳族或杂芳环选择substd; R4 =选择substd 2-20C亚烷基,所述substits为1-10C烷氧基,1-10C硫醚,0-10℃卤素 - 烷基氨基;或 和R5 =甲基通过选择1-10C烷氧基,烷基1-10C硫醚,0-10℃氨基或卤素substd。
    • 10. 发明公开
    • Photographic processing compositions including hydrophobically modified thickening agent
    • Photographische Verarbeitungszusammensetzungen mit einemrophob-modifizierten Verdickungsmittel。
    • EP0683430A2
    • 1995-11-22
    • EP95101799.5
    • 1995-02-09
    • POLAROID CORPORATION
    • Eckert, Robert D.Huang, Daniel D.Pierce, Francis M.
    • G03C8/38G03C5/305
    • G03C8/38G03C8/10G03C2200/21G03C2200/47Y10S516/06Y10S516/07
    • Photographic processing compositions comprising an aqueous alkaline medium and a hydrophobically modified thickening agent are disclosed. The subject thickening agent increases the viscosity of the processing composition while maintaining a relatively uniform homogenous mixture of the constituents thereof. The subject processing compositions are useful in photographic diffusion transfer film units and processes.
    • 摄影处理公司 包含(i)aq。 pH值在10以上的碱性介质。 12以上,(ii)增稠剂 从(a)选自丙烯酸,甲基丙烯酸,乙基丙烯酸,丙烯酸和丁烯酸的羧酸单体和(b)式(I)的疏水性单体中的(a)羧酸单体聚合的共聚物H 2 C = C(R 1)-C(O) -X 。 在式(I)中,R 1 = H或1-4C烷基; X = -OR 2或-NR 3 R 4 R 2 =芳烷基,烷芳基或烷基,其中每个烷基组分具有8-30℃; R3 = H或CH3; R4 = 1-18℃,当R3 = CH3时,4-18℃。 烷基,连接C为叔丁基。 当R3 = H. 共聚物还可以含有(c)式(II)的单体:H 2 C = CYZ(II)。 在式(II)中,Y = H或1-4C烷基; Z = H,CN,Cl,CH = CH 2或C 6 H 4 R 5; R5 = H或1-4C烷基。 compsn。 也可以含有(d)交联cpd,更优选。 多不饱和cpd compsn。 (a),0.1-40重量%,(尤其是大于5重量%),(b),至多40重量%(c),和至多5重量% (d)的重量%。 特别是 优先。 增稠剂是丙烯酸和叔丁基丙烯酰胺或丙烯酸和甲基丙烯酸硬脂酯的交联无规共聚物。