Phosphorus—silicon synergistic flame retardants and the preparation method and use thereof
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United States of America Patent
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Nov 17, 2015
Grant Date -
Apr 3, 2014
app pub date -
Apr 13, 2012
filing date -
Mar 12, 2012
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Abstract
The present invention discloses a phosphorus-silicon synergistic flame retardant and the preparation method and use thereof. The phosphorus-silicon synergistic flame retardant provided by the present invention has a structural general formula shown as formula I. A new type of compound containing phosphorus and silicon is prepared by the present invention using the cheap organic boron catalyst, and employing the addition reaction of diphenyl phosphine oxide and derivatives thereof with silicone containing carbon-carbon double bond. Such compounds have the properties of hydrolytic resistance, easy purification, and low synthesis cost, etc. Phosphorus and silicon elements in the molecular structures of such compounds both can act as the flame retardants solely, and meantime can work synergistically, thereby enduing the common polymeric materials with the excellent flame retardant property.
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