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公开(公告)号：DE2850533A1
公开(公告)日：1980-06-04
申请号：DE2850533
申请日：1978-11-22
Applicant: BASF AG
Inventor： OBERLINNER ANDREAS DIPL CHEM D
IPC: B41M5/136 , C07D243/02 , C07D243/04 , B41M5/12
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公开(公告)号：DE2737207A1
公开(公告)日：1979-03-01
申请号：DE2737207
申请日：1977-08-18
Applicant: BASF AG
IPC: C07D493/06 , B41M5/136 , B41M5/15 , C07D493/10 , C09B57/00 , B41M5/12
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公开(公告)号：DE2363458A1
公开(公告)日：1975-07-03
申请号：DE2363458
申请日：1973-12-20
Applicant: BASF AG
IPC: C07B61/00 , C07C47/52 , C07C67/00 , C07C223/06 , C07C229/66 , C07C253/00 , C07C255/58 , C09B11/14 , C09B26/02 , C09B57/00 , C07C131/00 , C07C119/06 , C07C109/12
Abstract: Aminobenzaldehyde compounds and a process for their production by the reaction of an aniline with a formamide in the presence of an acid halide with or without a following reaction with a nitrogen compound. The products are starting materials for the production of optical brighteners, dyes, plant protection agents and medicaments.
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公开(公告)号：DE2323803A1
公开(公告)日：1974-12-05
申请号：DE2323803
申请日：1973-05-11
Applicant: BASF AG
Abstract: Spirodipyrans based on condensed pyrylium salts and 4-dialkylamino-2-hydroxybenzaldehydes, their manufacture and their use as chromogenic materials in pressure-sensitive recording materials, particularly copying papers.
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公开(公告)号：DE2847690A1
公开(公告)日：1980-05-22
申请号：DE2847690
申请日：1978-11-03
Applicant: BASF AG
Inventor： OBERLINNER ANDREAS DIPL CHEM D
IPC: B41M5/136 , B41M5/15 , C07D491/20 , C07D491/22 , C07D493/10 , C09B57/00 , B41M5/12
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Patent Agency Ranking
公开(公告)号：CH605966A5
公开(公告)日：1978-10-13
申请号：CH628174
申请日：1974-05-08
Applicant: BASF AG
IPC: B41M5/136 , B41M5/15 , C07D493/10 , C09B57/00 , B41M5/12
Abstract: Spirodipyrans based on condensed pyrylium salts and 4-dialkylamino-2-hydroxybenzaldehydes, their manufacture and their use as chromogenic materials in pressure-sensitive recording materials, particularly copying papers.
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公开(公告)号：DE2703811A1
公开(公告)日：1978-08-10
申请号：DE2703811
申请日：1977-01-29
Applicant: BASF AG
IPC: B41M5/136 , B41M5/15 , C07D493/10 , C09B57/00 , B41M5/12
Abstract: A pressure-sensitive recording material which comprises a substrate bearing a dye-forming component and a binder. The dye-forming component is a spirodipyran of the formula where A is the radical of a fused benzene or naphthalene ring (which rings may or may not be substituted), R1 is alkyl of 1 to 16 carbon atoms, substituted or unsubstituted phenyl or phenalkyl of 7 to 10 carbon atoms, R2 is H or together with R1 is a trimethylene or tetramethylene bridge which is unsubstituted or substituted by from 1 to 3 alkyl, R3 is benzyl or beta -phenylethyl and R4 is benzyl, beta -phenylethyl or substituted or unsubstituted phenyl, or R3 is alkyl of 1 to 4 carbon atoms and R4 is substituted or unsubstituted phenyl or R3 is benzyl and R4 is beta -cyanoethyl. The recording materials give violet to bluish green colorations (copies) only on paper coated with an electron acceptor.
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公开(公告)号：DE2611600A1
公开(公告)日：1977-09-22
申请号：DE2611600
申请日：1976-03-19
Applicant: BASF AG
IPC: B41M5/15 , C07D493/10 , C07D493/02 , B41M5/12 , C07D491/22
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公开(公告)号：DE2430568A1
公开(公告)日：1976-01-15
申请号：DE2430568
申请日：1974-06-26
Applicant: BASF AG
IPC: C09B57/00 , C07D311/78 , G03C1/73 , C07D311/80 , B41M5/02
Abstract: New spirodipyrans of the formula (I) in which A is an optionally substituted benzene or naphthalene nucleus, B is dimethylene, trimethylene or tetramethylene substituted by from 1 to 3 alkyl groups and R1 and R2 are each alkyl of 1 to 6 carbon atoms, which may be substituted by cyano. The compounds (I) give deep blue to violet colorations with acid materials. They may be used for the manufacture of pressure-sensitive recording materials. The compounds (I) exhibit improved solubility in the solvents used for the manufacture of microcapsules.
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