Polymeric material whose impact resistance and toughness have been increased by the incorporation of phase microdomains of a rubbery material.
Note:
An example is the incorporation of soft polybutadiene domains into glassy polystyrene to produce high-impact polystyrene.
Source:
PAC, 2004, 76, 889. 'Definitions of terms relating to reactions of polymers and to functional polymeric materials (IUPAC Recommendations 2003)' on page 899 (https://doi.org/10.1351/pac200476040889)