Thermosetting reactive resin mixtures and a process for the...

Details Thermosetting reactive resin mixtures and a process for the... Thermosetting reactive resin mixtures and a process for the...

C - Chemistry, Metallurgy

08

G

402/152, 400/550

C08G 18/00 (2006.01) C08G 18/04 (2006.01) C08G 18/18 (2006.01) C08G 18/58 (2006.01)

Patent

CA 1257739

THERMOSETTING REACTIVE RESIN MIXTURES AND A PROCESS FOR THE PRODUCTION OF MOLDINGS USING THESE MIXTURES ABSTRACT OF THE DISCLOSURE A thermosetting reactive resin mixture is made from an organic polyisocyanate, a polyepoxide and a heat activatable catalyst. The catalyst is a tertiary or quaternary ammonium salt of an alkylating or acidic ester of an organic phosphonic acid or of phosphoric acid. The polyisocyanate and polyepoxide are used in quantities such that the equivalent ratio of isocyanate groups to epoxide groups is from 1.2:1 to 70:1. These mixtures may be heated to produce plastics having excellent heat resistance, moisture and abrasion resistance, low dielectric losses and excellent molding properties.

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