PROCESS FOR PRODUCTION OF AN AZOMETHINE PIGMENT
A process for the production of a compound of the formula: in pigmentary form having a mean particle size not exceeding 0.3 microns, comprising:a) reacting .beta.-naphthol with chloroform in an alkaline medium, using a sufficiently slow rate of addition of chloroform that the reaction mixture, after...
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| Main Authors | , , |
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| Format | Patent |
| Language | English |
| Published |
23.06.1981
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| Subjects | |
| Online Access | Get full text |
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| Abstract | A process for the production of a compound of the formula: in pigmentary form having a mean particle size not exceeding 0.3 microns, comprising:a) reacting .beta.-naphthol with chloroform in an alkaline medium, using a sufficiently slow rate of addition of chloroform that the reaction mixture, after initially assuming a deep blue colour and then turning green, maintains this green colouration until the addition of chloroform has been completed;b) reacting the alkali metal salt of 2-hydroxy-1-naphthal-dehyde from step a) with 2-aminophenol to produce a ligand of formula: IIc) metallising the ligand of formula II with an aqueous solution of a coppering agent, and isolating the complex metal pigment of formula I. - 1a |
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| AbstractList | A process for the production of a compound of the formula: in pigmentary form having a mean particle size not exceeding 0.3 microns, comprising:a) reacting .beta.-naphthol with chloroform in an alkaline medium, using a sufficiently slow rate of addition of chloroform that the reaction mixture, after initially assuming a deep blue colour and then turning green, maintains this green colouration until the addition of chloroform has been completed;b) reacting the alkali metal salt of 2-hydroxy-1-naphthal-dehyde from step a) with 2-aminophenol to produce a ligand of formula: IIc) metallising the ligand of formula II with an aqueous solution of a coppering agent, and isolating the complex metal pigment of formula I. - 1a |
| Author | MCCRAE, JAMES M IRVINE, ALEXANDER M MACPHERSON, IAN A |
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| Notes | Application Number: CA19770283967 |
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| PublicationDate | 19810623 |
| PublicationDateYYYYMMDD | 1981-06-23 |
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| PublicationDecade | 1980 |
| PublicationYear | 1981 |
| RelatedCompanies | CIBA-GEIGY AG |
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| Snippet | A process for the production of a compound of the formula: in pigmentary form having a mean particle size not exceeding 0.3 microns, comprising:a) reacting... |
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| SubjectTerms | ADHESIVES CHEMISTRY DYES LAKES METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MORDANTS NATURAL RESINS ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES PAINTS POLISHES |
| Title | PROCESS FOR PRODUCTION OF AN AZOMETHINE PIGMENT |
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