Multifunctional benzoxazines and composite materials incorporating the same
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United States of America Patent
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Nov 21, 2017
Grant Date -
Jun 25, 2015
app pub date -
Dec 8, 2014
filing date -
Dec 20, 2013
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Abstract
A curable resin composition containing a blend of multifunctional benzoxazines, and composite materials derived therefrom. The benzoxazine blend contains the combination of (A) a difunctional benzoxazine component and (B) a multifunctional benzoxazine component with functionality of greater than 2. Cured matrix resins and cured composite materials containing such benzoxazine blend exhibit a significant retardation in the rate of organic solvent uptake as compared to the same cured matrix resins and composite materials without component (B).
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