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公开(公告)号：US3816453A
公开(公告)日：1974-06-11
申请号：US20261571
申请日：1971-11-26
Applicant: POLAROID CORP
Inventor： KARGER E , MACGREGOR P
Abstract: THIS INVENTION RELATES TO A METHOD OF SYNTHESIZING INDICATOR DYES BY REACTING A 1-NAPHTHOL AND A PHTHALALDEHYDIC OR A NAPHTHALADEHYDIC ACID TO FORM THE CORRESPONDING 1:1 ADDUCT, AND REACTING THE ADDUCT WITH A 1-NAPHTHOL OR AN INDOL TO FORM A LEUCO DYE INTERMEDIATE WHICH IS OXIDIZED TO THE CORRESPONDING INDICATOR DYE PRODUCT. IN A PREFERRED AMBODIMENT, 3,3-DISUBSTITUTED (NA)PHTHALIDES ARE PREPARED WHEREIN THE 3,3 SUBSTITUENTS COMPRISE CARBOXY-SUBSTITUTED NAPHTHOL RADICALS WHICH INCLUDES THE ADDITIONAL STEP OF IONIZING THE LEUCO DYE IMTERMEDIATE PRIOR TO THE OXIDATION STEP.
Abstract translation: 本发明涉及邻苯二醛和萘甲酸的衍生物，其可用作制备pH敏感的苯酞和萘指示剂染料的中间体。
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2.发明授权Photographic processes and products employing mixed indole/phenol phthaleins as optical filter agents 失效使用混合印花/酚醛树脂作为光学过滤剂的摄影工艺和产品
公开(公告)号：US3816124A
公开(公告)日：1974-06-11
申请号：US20255871
申请日：1971-11-26
Applicant: POLAROID CORP
Inventor： KARGER E , MAC GREGOR P
CPC classification number: C07D311/92 , G03C8/48
Abstract: This invention relates to a class of 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 3,3-disubstituted naphthalides wherein one of the 3,3-substituents is an indol-3-yl radical substituted with hydrogen on the heterocyclic N atom and the other of said 3,3 substituents is a p-hydroxycarbocyclic aryl radical selected from a 4''-hydroxy-1''-phenyl radical and a 4''hydroxy-1''-naphthyl radical.
Abstract translation: 本发明涉及一类指示剂染料，其用作照相工艺中的滤光剂，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3,3-二取代的苯并二苯并呋喃和3,3-二取代的萘，其中3,3-取代基之一是在杂环N原子上被氢取代的吲哚-3-基基团，而所述3,3个取代基中的另一个 是选自4'-羟基-1'-苯基和4'-羟基-1'-萘基的对羟基碳环芳基。
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