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Molecules 2011, 16(6), 5035-5053; doi:10.3390/molecules16065035

Synthetic Dye - Inorganic Salt Hybrid Colorants for Application in Thermoplastics

State Key Laboratory of Environmental Pollution and Resourse Reuse, Tongji University, Shanghai 200092, China
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Received: 22 February 2011 / Revised: 13 June 2011 / Accepted: 16 June 2011 / Published: 17 June 2011
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Abstract

Common synthetic dyes, e.g., Weak Acid Pink Red B (APRB, C.I. 18073), Mordant Blue 9 (MB, C.I.14855) and Acid Brilliant Blue 6B (ABB6B, C.I. 42660), can be removed from water by in situ hybridization with CaCO3, BaSO4 and Ca3(PO4)2 and the resulting hybrids thus prepared used as plastic colorants. All the hybrids can be processed into polypropylene (PP) at 200 °C with good color intensity, color brightness and homogeneous dispersion. The BaSO4-MB hybrid exhibits better migration resistance to acid and alkali, and stronger covering power than the BaSO4-MB mixture. The thermal stability and UV resistance of the Ca3(PO4)2-ABB6B hybrid are better than those of the Ca3(PO4)2-ABB6B mixture. The crystallinity of PP is enhanced by incorporation of these hybrids and the use of these hybrids as colorants in PP instead of the dyes alone is determined to be feasible.
Keywords: synthetic dye; hybrid; insoluble inorganic salt; colorant; plastic synthetic dye; hybrid; insoluble inorganic salt; colorant; plastic
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Wei, Y.-P.; Li, T.; Gao, H.-W. Synthetic Dye - Inorganic Salt Hybrid Colorants for Application in Thermoplastics. Molecules 2011, 16, 5035-5053.

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