C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 63/00 (2006.01) C08L 53/02 (2006.01)
Patent
CA 2093605
T 4577 A B S T R A C T EPOXY RESIN COMPOSITION According to this invention, an epoxy resin composition is provided with a finely dispersed phase of an elastomeric block copolymer having at least one block of a hydrogenated conjugated diene connected to at least one block of a carboxylated monoalkenyl aromatic hydrocarbon. The block copolymers are dispersed in the epoxy resin by emulsifying the carboxylated block copolymer and blending the emulsion with the epoxy resin. The block copolymer is emulsified from a relatively non-polar solvent such as tetrahydrofuran using gradual addition of a polar sol~ent such as water or an alcohol. The dispersed rubber particles have an average diameter between 0.05 and 0.20 microns. VM7/T4577FF
Modic Michael J.
Pottick Lorelle A.
Shell Canada Limited
Smart & Biggar
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