| abstract |
Discloses a multistage polymer composition comprising: (a) at least one polymer selected from the group consisting of (a) crosslinked cores (i) alkyl (meth) acrylate monomers and (ii) one or more crosslinking monomers, graft-binding monomers and combinations thereof Lt; / RTI > (b) a first intermediate layer comprising polymerized units derived from (i) at least one alkyl (meth) acrylate monomer and (ii) a crosslinking monomer, a graft-binding monomer and combinations thereof; (c) a second intermediate layer comprising (i) one or more alkyl (meth) acrylate monomers, styrene monomers, and combinations thereof, and (ii) polymerized units derived from one or more chain transfer agents; And (d) one or more selected from the group consisting of shells (i) alkyl (meth) acrylate monomers, styrene monomers, and combinations thereof, (ii) acid functionalized monomers, hydroxyl functionalized monomers, And (iii) polymerized units derived from any one or more chain transfer agents. |