Abstract
Phosphates having ΔSP of 1 to 2 from a given resin were found to have partial compatibility with the resin. Such phosphates promote resin plastication and thus function as flow modifiers during molding while their partial incompatibility serves to maintain the inherent heat resistance of the resin in molded products. It was found in particular that hydroxyphenyl-containing phosphates such as resorcinyl diphenyl phosphate function not only as flame retardants but also as flow modifiers for styrenic resin compositions, in which they improve flowability without causing reduced impact resistance or heat resistance. Investigation of phosphate/styrenic resin compatibility by FT-IR spectroscopic and viscoelastic analysis indicated strong interaction by the phosphate containing no hydroxyphenyl group, but significantly weaker interaction by the hydroxyphenyl-containing phosphate.
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Nishihara, H., Tanji, S. & Kanatani, R. Interaction between Hydroxyphenyl-Containing Phosphate and Styrenic Resin. Polym J 29, 399–403 (1997). https://doi.org/10.1295/polymj.29.399
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DOI: https://doi.org/10.1295/polymj.29.399