Modified thermosetting imide resins with improved fracture toughness
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United States of America Patent
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May 6, 1986
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app pub date -
Feb 28, 1985
filing date -
Jul 21, 1982
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Abstract
Bisimide resins having improved fracture toughness and resistance to microcracking comprise a mixture of, (a) a bisimide of the general formula (I) ##STR1## in which B represents a divalent radical containing a carbon-carbon double bond and A is a divalent radical containing at least two carbon atoms and (b) a polyisocyanate of the general formula (II) D(NCO).sub.x (II) in which x has a value of between 2 and 4 and D stands for an x-valent radical.
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