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    • 1. 发明授权
    • Image dye-forming couplers and photographic elements containing them
    • 图像染料形成成色剂和含有它们的摄影元件
    • US6071683A
    • 2000-06-06
    • US131851
    • 1998-08-07
    • John D. GoddardDanuta GibsonLlewellyn J. LeyshonBrian Thomas
    • John D. GoddardDanuta GibsonLlewellyn J. LeyshonBrian Thomas
    • C07C235/80C07C311/08C07D263/44G03C7/30G03C7/305G03C7/36G03C7/392G03C1/08
    • C07D263/44C07C235/80C07C311/08G03C7/3013G03C7/30535G03C7/36G03C7/39216
    • The present invention relates to a silver halide photographic element comprising a dye-forming coupler of formula (I) ##STR1## wherein R.sup.1 is selected from an alkyl group, an aryl group, a 5-10 membered heterocyclic group containing one or more O, N or S atoms, each of which groups is unsubstituted or substituted, or a substituted amino group;R.sup.2 is an unsubstituted alkyl group having a secondary or tertiary carbon atom attached to the oxygen atom;X is hydrogen or a coupling-off group; andR.sup.3 is a substituent and n is 0 to 4; orwherein R.sup.2, as defined above, and an R.sup.3 substituent may together with the O atom form a 5-10 membered heterocyclic group which may contain one or more further heteroatoms selected from O, N and S, said group being unsubstituted or substituted; andwherein at least one of R.sup.1, R.sup.2 and R.sup.3 separately or in combination constitutes a ballast group,the couplers providing enhanced light stability together with acceptable dye hue in images produced from photographic materials containing them.
    • 本发明涉及一种卤化银照相元件,其包含式(I)的染料形成成色剂,其中R 1选自烷基,芳基,含有一个或多个O,N或S的5-10元杂环基 原子,其各自为未取代或取代的基团,或取代的氨基; R2是与氧原子连接的具有仲或叔碳原子的未取代的烷基; X是氢或偶合离去基团; R3为取代基,n为0〜4; 或其中如上定义的R 2和R 3取代基可以与O原子一起形成5-10元杂环基团,其可以含有一个或多个另外的选自O,N和S的杂原子,所述基团是未取代的或取代的; 并且其中R 1,R 2和R 3中的至少一个分别或组合构成镇流器基团,所述成色剂提供增强的光稳定性以及由含有它们的照相材料产生的图像中可接受的染料色调。
    • 8. 发明授权
    • High contrast photographic element containing a novel nucleator
    • 含有新型成核剂的高对比度照相元件
    • US06245480B1
    • 2001-06-12
    • US09591774
    • 2000-06-12
    • Judith A. BogiePhilip J. ColdrickJohn D. GoddardLlewellyn J. Leyshon
    • Judith A. BogiePhilip J. ColdrickJohn D. GoddardLlewellyn J. Leyshon
    • G03C108
    • G03C1/061G03C2001/108
    • The invention relates to an ultrahigh contrast photographic material comprising a support bearing a silver halide emulsion layer, containing a hydrazide nucleating agent in the emulsion layer or a hydrophilic colloid layer, characterised in that the nucleating agent of formula (I) comprises (a) two nicotinamide moieties, which may be the same or different, which are linked by a linking group, and (b) a hydrazide moiety linked to only one of the nicotinamide moieties. The nucleator of formula (I) may be in combination with a nucleator of formula (II) which comprises a dimeric molecule comprising two monomers linked by a linking group, each monomer of which (a) may be the same or different and (b) comprises a hydrazide moiety and a nicotinamide moiety. The photographic material provides unexpectedly good nucleation in the absence of, or with reduced amounts of, booster and in a developer whose pH is variable, and further with lower chemical spread and pepper fog. When the synthesis provides both a compound of formula (I) and (II), the products can be used directly without a separation step, providing a cost advantage.
    • 本发明涉及一种超高对比度照相材料,其特征在于,式(I)的成核剂包括:(a)两个(II)的成核剂,其特征在于,所述超高对比度照相材料包含载体,所述载体含有在所述乳剂层中的酰肼成核剂或亲水胶体层的卤化银乳剂层, 烟酰胺部分,其可以相同或不同,其通过连接基团连接,和(b)仅与一个烟酰胺部分连接的酰肼部分。 式(I)的成核剂可以与式(II)的成核剂组合,其包含包含通过连接基团连接的两个单体的二聚体分子,其各自的单体(a)可以相同或不同,和(b) 包含酰肼部分和烟酰胺部分。照相材料在不存在或具有减少量的助催化剂和在pH可变的显影剂中进一步具有较低的化学扩散和胡椒雾的情况下提供出人意料的良好成核。 当合成提供式(I)和(II)的化合物时,可以直接使用产物而不进行分离步骤,从而提供成本优势。
    • 10. 发明授权
    • Bisphenol derivative stabilizers
    • 双酚衍生物稳定剂
    • US4782011A
    • 1988-11-01
    • US035970
    • 1987-04-08
    • John D. GoddardNigel E. MilnerLlewellyn J. Leyshon
    • John D. GoddardNigel E. MilnerLlewellyn J. Leyshon
    • G03C7/26C07C43/23G03C7/32G03C7/392G03C1/34
    • C07C43/23G03C7/39216
    • A photographic element comprising a support having thereon at least one silver halide emulsion layer having associated therewith a dye-forming coupler and a dye stabilizer comprising a bisphenol derivative having two linked phenol rings, one of the phenolic hydroxy groups being substituted and at least one of the phenol rings being substituted.In a preferred embodiment, the bisphenol derivative has the following formula: ##STR1## wherein A is a substituted or unsubstituted alkyl, cycloalkyl, alkenyl, aryl, acyl, alkylsulfonyl or arylsulfonyl group;X is a single bond or a linking group selected from alkylidene, a heteroatom or sulfonyl; and,each R independently represents one or more substituents, each substituent independently being a substituted or unsubstituted alkyl, alkenyl, cycloalkyl or aryl group; or each R in combination with the benzene ring to which it is attached independently represents the atoms necessary to complete a fused ring system.
    • 一种照相元件,包括其上具有至少一个卤化银乳剂层的载体,所述卤化银乳剂层具有染料形成成色剂和染料稳定剂,所述染料稳定剂包含具有两个连接的酚环的双酚衍生物,一个酚羟基被取代,以及至少一个 酚环被取代。 在优选的实施方案中,双酚衍生物具有下式:其中A是取代或未取代的烷基,环烷基,烯基,芳基,酰基,烷基磺酰基或芳基磺酰基; X是单键或选自亚烷基,杂原子或磺酰基的连接基团; 每个R独立地表示一个或多个取代基,每个取代基独立地是取代或未取代的烷基,烯基,环烷基或芳基; 或每个R与其所连接的苯环组合,独立地表示完成稠环体系所必需的原子。