Flexible epoxy adhesives with low bleeding tendency

Details Flexible epoxy adhesives with low bleeding tendency Flexible epoxy adhesives with low bleeding tendency

C - Chemistry, Metallurgy

09

J

C09J 163/00 (2006.01) C08G 59/22 (2006.01) C08G 59/38 (2006.01) C08K 5/05 (2006.01) C08K 5/13 (2006.01) C08L 63/00 (2006.01) C09J 11/06 (2006.01) H01L 21/58 (2006.01) H01L 23/29 (2006.01)

Patent

CA 2193707

An improvement to flexible epoxy resin compositions consists in the addition to the composition of a polyhydroxyl compound having two or three hydroxyl groups or of a monohydroxyl compound that also contains one or more phenyl groups. The hydroxyl compound is present in the composition in a ratio by weight to the flexibilizing agent of from 1:3 to 1 : 1 0 and reduces bleeding of the resin onto a substrate when applied in its uncured state.

Une amélioration apportée à des compositions à base de résines époxy flexibles consiste en l'addition à la composition d'un composé du type polyhydroxyle comportant deux ou trois groupements hydroxyle, ou d'un composé du type monohydroxyle, contenant également un ou plusieurs groupements phényle. Le composé hydroxyle est présent dans la composition dans une proportion pondérale de 1:3 à 1:10, par rapport à l'agent assouplissant, et il réduit le ressuage de la résine sur un substrat lorsqu'elle est appliquée à l'état non durci.

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