Patent ID: 9181407
Filing Date: 2015-11-10
Classification: C08J

Abstract:
1. A process for preparing a reinforcement resin comprising the steps of: a) providing a liquid curable resin comprising an epoxy resin component and a thermoplastic toughener component; b) providing a curing agent for said epoxy resin that is in the form of solid particles having particle sizes ranging from 10 microns to 100 microns; c) continuous blending of said curing agent with said liquid curable resin to dissolve the solid particles of curing agent within said liquid curable resin to form a liquid blend, wherein said continuous blending comprises passing said curable resin and said curing agent through a blender that comprises a conduit comprising a heated wall that defines an entrance, a blending zone having a circular cross-section with a diameter of less than 5 cm and an exit, applying a vacuum to said blending zone wherein the residence time of said curable resin and said curing agent within said blending zone is from 1 second to 2 minutes and wherein said liquid blend that flows from said exit is at a temperature of from 100° C. to 140° C.; and d) cooling said liquid blend after said liquid blend flows from the exit of said blender to form the reinforcement resin.