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US 4,871,821 AGranted
Curable resin from bis-maleimide and alkenyl phenyl hydroxy ether
AssigneeTechnochemie GmbH
InventorsHorst Stenzenberger, Peter Koenig
Life of this patent
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Abstract
Cured resins of high fracture toughness are prepared from N,N'-bisimides of formula I ##STR1## and alkenyl compounds of formula II D(G).sub.m II in which D is an m-valent group and G represents a phenyl ring having at least one alkenyl (e.g. allyl or 1-propenyl) substituent.
Claims20
Curable resin comprising a mixture of
- (a) at least one bisimide of the general formula I ##STR17## 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) at least one alkenyl compounds of formula II
- D(G).sub.m II
- in which m is an integer from 1 to 4, G represents a phenyl ring substituted by at least one alkenyl group and D represents (i) a group of formula IIa
- E--[OCH.sub.2 CH(OH)CH.sub.2 O--].sub.n IIa
- in which E is a n-valent group and n is an integer from 1 to 4, (ii) a divalent group of formula IIb ##STR18## in which F is a divalent group chosen from --SO.sub.2 --, --SO--, --CMe.sub.2 --, --O--, --C(CF.sub.3).sub.2 --, --CH.sub.2 -- or --CO--, (iii) a group of formula IIc ##STR19## in which F is as defined in (ii) above, (iv) a divalent group of formula IId ##STR20## or (v) a divalent group of formula IIe ##STR21## in which J is a divalent group chosen from --SO.sub.2 --, --SO--, --CMe.sub.2 --, --O--, --C(CF.sub.3).sub.2 --, --CH.sub.2 -- or --CO-- and p is 0 or 1.
3 more elements
Dependencies are inferred from the claim text.