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    • 2. 发明授权
    • Optical filter agents and photographic products and processes containing
same
    • 光学过滤剂和含有它们的摄影产品和方法
    • US4621156A
    • 1986-11-04
    • US309914
    • 1981-10-08
    • Derek H. R. BartonIrena Y. Bronstein-BonteLloyd D. Taylor
    • Derek H. R. BartonIrena Y. Bronstein-BonteLloyd D. Taylor
    • G03C8/48C07C109/12
    • G03C8/48
    • Optical filter agents and photographic products and processes using same are disclosed. The optical filter agents are pH-sensitive hydrazone compounds conforming to the following structural formula: ##STR1## where R is any group which can provide a double bond for conjugation with the ##STR2## portion of the compound to provide light-absorbing capability or color for the agent at a pH above its pKa, X is a substituent of R providing at least one electron-withdrawing group and each R' can be defined as any substituent that does not impair the light-absorbing capacity of the compound at a pH above the pKa thereof. The pH-sensitive optical filter agents have a highly colored light-absorbing form at a pH above the pKa and are substantially non-absorbing at a pH below the pKa. The pH-sensitive optical filter agents are useful in photographic film units and processes for the protection of photoexposed photosensitive elements against the occurrence of fogging during in-light development.
    • 公开了使用其的光学过滤剂和照相产品和方法。 光学过滤剂是符合以下结构式的pH敏感腙化合物:其中R是可以提供双键与化合物的部分缀合以提供光吸收能力或颜色的任何基团 对于高于其pKa的pH的试剂,X是提供至少一个吸电子基团的R的取代基,并且每个R'可以被定义为在上述pH下不影响化合物的光吸收能力的任何取代基 其pKa。 pH敏感的光学过滤剂在高于pKa的pH下具有高度着色的光吸收形式,并且在低于pKa的pH下基本上不吸收。 pH敏感的光学过滤剂可用于照相胶片单元和用于保护光敏元件免于在光照显影过程中发生起雾的过程。
    • 10. 发明授权
    • Process for producing ketazine by reacting a ketone with ammonia and a
peroxide
    • 通过使酮与氨和过氧化物反应制备酮连氮的方法
    • US4233242A
    • 1980-11-11
    • US27895
    • 1979-04-06
    • Nobuyuki NagatoYuichi Sugiyama
    • Nobuyuki NagatoYuichi Sugiyama
    • C07C109/12C07C109/14C07C109/16C07C119/00
    • C07C251/88
    • Ketazines having the general formula (I) ##STR1## wherein R.sub.1 represents alkyl group having 1 to 4 carbon atoms and R.sub.2 represents (i) an alkyl group having 1 to 4 carbon atoms or (ii) a phenyl group optionally substituted with an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms or a halogen group, and R.sub.1 and R.sub.2 together with the carbon atom to which they are both bonded may form a ring, are advantageously manufactured by reacting an aliphatic or aromatic ketone having the formula (II) ##STR2## wherein R.sub.1 and R.sub.2 are as defined above, with ammonia and a peroxide compound or compounds in the presence of amorphous silica or palladium compounds, as a catalyst, at a temperature of from 0.degree. to 120.degree. C., in a liquid phase.
    • 具有通式(I)的化合物其中R 1表示具有1至4个碳原子的烷基,R 2表示(i)具有1至4个碳原子的烷基或(ii)任选被 具有1至4个碳原子的烷基,具有1至4个碳原子的烷氧基或卤素基团,并且R 1和R 2与它们所连接的碳原子一起形成环可有利地通过使 在无定形二氧化硅或钯化合物作为催化剂存在下,在氨气和过氧化物或化合物作为催化剂的情况下,具有式(II)的脂族或芳族酮(II)其中R 1和R 2如上定义, 为0〜120℃,为液相。