Epoxy resin composition

Details Epoxy resin composition Epoxy resin composition

1992-04-09

1995-01-03

Wu, Shean

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 65, C08L 5300, C08G 6348

Patent

active

H00014052

ABSTRACT:
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 solvent such as water or an alcohol. The dispersed rubber particles have an average diameter between 0.05 and 0.20 microns.

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