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    • 1. 发明授权
    • Silver halide color photographic light-sensitive elements having improved image quality
    • 卤化银彩色照相感光元件具有改善的图像质量
    • US06242168B1
    • 2001-06-05
    • US09576528
    • 2000-05-23
    • Mauro AvidanoRaffaella BiavascoDiego BrignoneGiuseppe RoccaLuisa Tavella
    • Mauro AvidanoRaffaella BiavascoDiego BrignoneGiuseppe RoccaLuisa Tavella
    • G03C146
    • G03C7/3003G03C7/3022G03C7/3029G03C7/30558G03C7/30594G03C2001/03535G03C2001/03558G03C2007/3037Y10S430/158
    • The present invention relates to a light-sensitive silver halide color multilayer photographic material which comprises a support base having coated thereon at least three red-sensitive emulsion layers having different sensitivity, at least three green-sensitive emulsion layers having different sensitivity, and at least two yellow-sensitive emulsion layers having different sensitivity, wherein (a) a core-shell silver halide emulsion having an average silver iodide content lower than 10% mol is present in at least one of the lowest sensitive red-, green- and yellow layers, (b) a yellow dye forming malonodiamide DIR coupler having in the coupling position thereof a 4,7-dihalogen-2-benzotriazolyl group is present in both the medium sensitive red- and green-sensitive layers, and (c) a yellow dye forming DIR coupler having a 1,2,4-triazolyl group attached to the coupling position, such 1,2,4-triazolyl group comprising a hydrolizable alkoxy- or aryloxy-carbonyl group attached to a benzytlthio substituent on the 1,2,4-triazolyl group is present in at least one of the highest sensitive red- and green-sensitive layers.
    • 本发明涉及一种感光卤化银彩色多层照相材料,其包括其上涂覆有至少三种具有不同灵敏度的感红乳剂层的支持基质,至少三种具有不同灵敏度的感绿乳剂层,至少 两个具有不同灵敏度的黄敏感乳剂层,其中(a)平均碘化银含量低于10%摩尔的核 - 壳卤化银乳剂存在于至少一个最低敏感的红,绿和黄层中 ,(b)具有4,7-二卤代-2-苯并三唑基的偶联位置的黄色染料形成丙二酰胺DIR成色剂存在于中敏感红和绿敏感层中,和(c)黄色染料 形成具有连接到偶联位置上的1,2,4-三唑基的DIR成色剂,所述1,2,4-三唑基包含连接到苯甲硫基的可水解烷氧基 - 或芳氧基 - 羰基 1,2,4-三唑基中的取代基存在于最敏感的红敏感层和绿敏感层中的至少一个中。
    • 4. 发明授权
    • Alkaline soluble mixture composed of cellulose derivatives
    • 由纤维素衍生物组成的碱性可溶性混合物
    • US06261752B1
    • 2001-07-17
    • US09482674
    • 2000-01-13
    • Paola PuppoAlberto ValsecchiCarlo BarloccoLuisa Tavella
    • Paola PuppoAlberto ValsecchiCarlo BarloccoLuisa Tavella
    • G03C1835
    • G03C1/825A61K9/2866C11D3/226C11D17/0039
    • One object of the present invention is to provide a mixture composed of 1) a cellulose ether derivative esterified at least with a biprotic acid group derivative expressed by the formula HOOC—B—COOH (I), wherein B is a linear aliphatic group represented by (CH2)x with x a positive integer from 1 to 5 or is a 5-member or 6-member cycloaliphatic group and 2) a cellulose or cellulose derivative esterified at least with a phthalic acid derivative represented by the following formula (II). wherein R1 is an all group and y is a positive integer from 0 to 3. Said mixture shows an enhanced stability against hydrolysis when subjected to conditioning at high relative humidity and temperature. The composition may be useful in order to get antihalation layer on photographic films as well as enteric coating of pharmaceutical dosage and for controlled-release applications such as for cleaning formulation.
    • 本发明的一个目的是提供一种由以下物质组成的混合物:1)至少与由式HOOC-B-COOH(I)表示的双相酸基衍生物酯化的纤维素醚衍生物,其中B是由 (CH 2)x,xa为1〜5的正整数,或为5元环或6元环脂肪基,2)至少与下式(II)表示的邻苯二甲酸衍生物酯化的纤维素或纤维素衍生物。 R1是全部组,y是0至3的正整数。当在高相对湿度和温度下进行调理时,所述混合物显示出增强的抗水解稳定性。组合物可用于在照相胶片上获得防晕层 以及用于药物剂量和控制释放应用的肠溶衣,例如用于清洁制剂。
    • 5. 发明授权
    • Light-sensitive silver halide color photographic elements containing
2-equivalent 5-pyrazolone magenta couplers
    • 含有2-当量5-吡唑啉酮品红色成色剂的感光卤化银彩色照相元件
    • US6020115A
    • 2000-02-01
    • US102846
    • 1998-06-23
    • Ferdinando OrengoLuisa TavellaAntonio Poggi
    • Ferdinando OrengoLuisa TavellaAntonio Poggi
    • G03C7/20G03C1/74G03C7/30G03C7/305G03C7/32G03C7/384G03C1/08
    • G03C7/3029G03C7/3041G03C7/3225Y10S430/158
    • Multilayer color photographic element having on a support base blue-, green- and red-sensitive silver halide emulsion layers respectively associated with non-diffusing yellow, magenta and cyan dye-forming couplers, wherein (a) the green-sensitive silver halide emulsion layer comprises three green-sensitive silver halide emulsion layers, respectively uppermost, intermediate and lowermost, sensitive to the same spectral region of visible light, in which the sensitivity of the three green-sensitive silver halide emulsion layers decreases in order from the uppermost silver halide emulsion layer to the lowermost silver halide emulsion layer, (b) each of the three green-sensitive silver halide emulsion layers contains an 1-phenyl-3-anilino-4-phenylthio-5-pyrazolone magenta dye-forming coupler, (c) the weight ratio of the coupler to silver halide (expressed as silver) in the highest sensitivity uppermost green-sensitive silver halide emulsion layer is higher than the weight ratio of the coupler to silver halide (expressed as silver) in the medium sensitivity intermediate green-sensitive silver halide emulsion layer, and (d) the highest sensitivity uppermost green-sensitive silver halide emulsion layer contains a DIR coupler. The color photographic elements containing the aforesaid layer arrangement provide good speed-granularity relationship, good interimage effects, and less changes in the photographic properties such as decrease in color density and increase in fog when brought in contact with formaldehyde gas during storage prior to color development.
    • 多层彩色照相元件具有分别与非扩散黄色,品红色和青色染料形成成色剂相关的蓝色,绿色和红色感光卤化银乳剂层的支持基底,其中(a)感绿卤化银乳剂层 包括对可见光的相同光谱区域敏感的三个感绿卤化银乳剂层,分别为最上,中,下三个,其中三种感绿卤化银乳剂层的灵敏度从最上面的卤化银乳剂 (b)三个感绿卤化银乳剂层中的每一个含有1-苯基-3-苯胺基-4-苯硫基-5-吡唑啉酮品红色染料形成成色剂,(c) 最高灵敏度最高的绿敏卤化银乳剂层中成色剂与卤化银(以银表示)的重量比高于连接器的重量比 (d)最高灵敏度的最高感绿卤化银乳剂层含有DIR成色剂。 包含上述层布置的彩色照相元件提供良好的速度 - 粒度关系,良好的图像间效应,以及较少的照相特性变化,例如在着色显影之前保存期间与甲醛气体接触时的着色密度降低和雾度增加 。