| Titre : |
High performance pigments (HPP) : Copper phthalocyanine (CPC) pigment : Part 2 |
| Type de document : |
texte imprimé |
| Auteurs : |
Tipanna Melkeri, Auteur |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 73-75 |
| Langues : |
Anglais (eng) |
| Catégories : |
Phtalocyanine de cuivre
Pigments -- Synthèse
Pigments organiques
Procédés de fabrication
|
| Index. décimale : |
667.2 Colorants et pigments |
| Résumé : |
Copper phthalocyanine pigments are one of the largest consumed high performance organic pigments. AH copper phthalocyanine pigments are obtained from crude Copper phthalocyanine compound. Crude CPC is obtained by reacting phthalic anhydride, cuprous chloride, urea and solvent using ammonium molybdate as a catalyst. Crude CPC is manufactured by bake process and solvent process. Solvent process is commonly and commercial ly accepted process. There are many advantages of solvent process over bake process such as yield, quality and ease of operations. By using solvent process one can get about 91-94 % yield and high purity of about 98%. However, production of crude CPC is lead to generation of lots of water effluent which is threat to environment and aquatic animais. There is generatim'of ammonical nitrogen through ammonium carbonate which is dangerous to aquatic animais. Huge amounts of acid effluent is also generated during crude CPC manufacturing. It is a need of time to implement better process such as zero discharge process. This zero discharge process is economical if implemented effectively with value addition. India is one of largest manufacturer of crude CPC so, it's our responsibility to implement such environmentally friendly process. An improved process with less consumption of urea per kg crude. CPC is also now a days are more popular. Crude CPC are used to prepare blue and green pigments. |
| Note de contenu : |
- MANUFACTURING OF CRUDE COPPER PHTHALOCYANING (CPC) : Bake process - Solvent process - Process involves following steps
- SILENT FEATURES OF SOLVENT PROCESS
- NEW PROCESS WITH ZERO DISCHARGE
- NEW PROCESS WITH LESS UREA CONSUMPTION
- USE OF CRUDE CPC
- FIGURES : 1a. Condensation reaction in glass lined reactor - 1b. Distillation of solvent from reaction mixture - 1c. Treatment with sulphuric acid to remove impurities - 1d. Filtration and drying - 2. Series reactor to manufacture crude CPC |
| En ligne : |
https://drive.google.com/file/d/1U5Hp29FXWs-A-kCEgOoYxtnvbPr428Fp/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30693 |
in PAINTINDIA > Vol. LXVIII, N° 3 (03/2018) . - p. 73-75
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High performance pigments (HPP) in PAINTINDIA, Vol. LXVIII, N° 3 (03/2018)
