Patent ID: 8378013

Claim:
Hybrid impact modifiers prepared by: (i) mixing a latex or slurry of standard impact modifiers comprising particles having an elastomeric core and at least one thermoplastic shell and a slurry of a mineral filler to form a homogeneous mixture, and recovering at least one hybrid impact modifier from the homogenous mixture by spray drying, coagulation, freeze coagulation, or other known recovery methods; or (ii) introducing a first stream comprising a latex or slurry of standard impact modifiers comprising particles having an elastomeric core and at least one thermoplastic shell and simultaneously introducing a second stream comprising a slurry of a mineral filler, and recovering at least one hybrid impact modifier from the combined first and second streams by spray drying, coagulation, or other known recovery methods, wherein the at least one hybrid impact modifier is recovered as a powder, the powder consists of grains comprising an intimately mixed organic phase and inorganic phase, and the inorganic phase comprises the mineral filler in the form of a plurality of particles inside the grains.