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1.发明授权Photographic processes and products employing aminomethyl-substituted phenolic phthaleins as optical filter agents 失效使用氨基甲酸取代苯酚PHTHALEIN作为光学过滤剂的摄影过程和产品
公开(公告)号：US3779753A
公开(公告)日：1973-12-18
申请号：US3779753D
申请日：1971-09-02
申请人： POLAROID CORP
CPC分类号： G03C8/48
摘要： This invention relates to a class of phthalein indicator dyes useful as optical filter agents in photographic processes to protect a selectively exposed photosensitive material from further exposure during processing in the presence of incident light. Such dyes comprise 3,3-disubstituted phthalides and 3,3disubstituted naphthalides wherein the 3,3 substituents are phydroxy carbocyclic aryl radicals wherein one or both of the radicals possess a -CH2-NRR'' group ortho to the p-hydroxy group and the -CH2-NRR'' group(s) is capable of rendering the indicator dye substantially non-diffusible in aqueous solution.
摘要翻译： 本发明涉及一种在摄影过程中用作光学过滤剂的酞类指示剂染料，以在入射光的存在下保护选择性曝光的感光材料免于进一步曝光。 这样的染料包括3,3-二取代的苯酞和3,3-二取代的萘，其中3,3个取代基是对羟基碳环芳基，其中一个或两个基团具有邻羟基的-CH 2 -NRR'基团 基团和-CH 2 -NRR'基团能够使指示剂染料在水溶液中基本上不扩散。
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公开(公告)号：US3833615A
公开(公告)日：1974-09-03
申请号：US10386471
申请日：1971-01-04
申请人： POLAROID CORP
CPC分类号： G03C8/48 , C09B11/04 , C09B11/08 , C09B11/245 , C09B11/26
摘要： THIS INVENTION RELATES TO PHENOL PHTHALEIN INDICATOR DYES CONTAINING AS THE RING-CLOSING MOIETY, A NAPHTHALIDE GROUP OR A CARBOXYPHTHALIDE GROUP POSSESSING A CARBOXY SUBSTITUENT IN EITHER THE 4- AND/OR 7-POSITION OF THE PHTHALIDE RING. IN A PREFERRED EMBODIMENT, THE PHENOL RADICALS ARE SUBSTITUTED WITH A HYDROGEN-BONDING GROUP ON A CARBON ATOM ADJACENT TO THE CARBON ATOM CONTAINING THE PHENOLIC -OH. THESE DYES, DUE TO THE NAPHTHALIDE OR CARBOXYPHTHALIDE RING-CLOSING MOIETY EXHIBIT IMPROVED STABILITY IN HIGHLY ALKALINE MEDIA AND WHEN SUBSTITUTED WITH HYDROGEN-BONDING GROUPS AS IN THE THE PREFERRED EMBODIMENT, POSSESS A RELATIVELY HIGH PKA AS WELL.
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