| 摘要 |
Impact modifier concentrates that produce transparent, high Dynatup impact strength blends with amorphous, aromatic polyesters are described. Impact modifier concentrates provide amorphous, aromatic polyesters articles having better clarity than similar articles prepared with comparable powdered impact modifiers. The impact modifier concentrates are blends of polyesters with core-shell polymers with (A) a core composed principally of rubbery polymers, such as copolymers of diolefins with vinyl aromatic monomers, such as copolymers of butadiene with styrene, (B) an intermediate stage composed principally of hard polymers, such as polymers or copolymers of vinyl aromatic monomers, and (C) a shell composed principally of vinyl aromatic copolymers that contain hydroxyl functional groups or their equivalents (e.g. styrene/hydroxyalkyl (meth)acrylate copolymers).
|
