New crystallization method of p-phenylenediamine
A process for crystallizing p-phenyldiamine includes such steps as distilling p-phenyldiamine, dissolving in water, cooling while crystallizing, separation and vacuum drying. It features high purity and quality of product.
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | A process for crystallizing p-phenyldiamine includes such steps as distilling p-phenyldiamine, dissolving in water, cooling while crystallizing, separation and vacuum drying. It features high purity and quality of product. |
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