<p>The incorporation of 2 to 25 mu m particles of a limited class of polyimides having appreciable nonaromatic character into heat curable epoxy resin systems significantly increases the toughness of such systems without loss of other desirable properties. These toughened epoxy resin systems are useful in preparing carbon fiber reinforced composites having compression strength after impact (CAI) of greater than 45 Ksi after a 1500 in-lb/in impact.</p>
申请公布号
EP0377194(A2)
申请公布日期
1990.07.11
申请号
EP19890123889
申请日期
1989.12.23
申请人
BASF AKTIENGESELLSCHAFT
发明人
FOLDA, THOMAS, DR.;BOYD, JACK DOUGLAS;TESCH, HELMUT, DR.;WEBER, THOMAS, DR;RECKER, HANS GERT