| abstract |
A polymerisable composition comprising an ethylinically unsaturated isocyanurate resin and at least one vinyl monomer copolymerisable therewith. The isocyanurate resin is the trimerised reaction product of an ethylenically unsaturated, isocyanate functional urethane composition derived from the reaction of a polyisocyanate composition comprising a mixture of 2, 4' - and 4, 4' - diphenylmethane diisocyanates with at least one hydroxyl functionalised vinyl monomer. The polymerisable compositions are clear resins which can be reaction injection moulded to produce moulded articles having a high heat distortion temperature. |