| 摘要 |
Disclosed are novel diphosphonic acids and diphosphonic acid esters of para-menthane which may be prepared by reacting alpha -pinene or beta -pinene with a dialkyl hydrogen phosphite under effective free-radical conditions. These products are potentially useful as flame retardants and are useful as treating agents for improving the pigmentary properties of pigmentary titanium dioxide in thermoplastic formulations.
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