PRODUCTION OF CRUDE COPPER PHTHALOCYANINE
PURPOSE:To obtain the titled copper phthalocyanine by dry grinding of a crude copper phthalocyanine under specified conditions in a short time, also with a small mechanical energy to effect reduction in its bulkiness, thus enabling to be readily made into pigment in the subsequent process. CONSTITUT...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | PURPOSE:To obtain the titled copper phthalocyanine by dry grinding of a crude copper phthalocyanine under specified conditions in a short time, also with a small mechanical energy to effect reduction in its bulkiness, thus enabling to be readily made into pigment in the subsequent process. CONSTITUTION:The objective copper phthalocyanine can be obtained by dry grinding, in the absence of both grinding aid and organic liquid, of a crude copper phthalocyanine, using a grinder such as ball mill, vibration mill or attrition mill, to such a point as to be |
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