Curable thermoplastic elastomeric blend, method of manufacture, and use thereof

A process comprising

• (a) adding and admixing an elastomer, a peroxide free-radical initiator and an organic multiolefinic coagent in a melt extruder or melt blender at a temperature insufficient to promote cross-linking to produce a first mixture wherein the elastomer is poly(alkyl (meth)acrylate) or polyethylene/alkyl (meth)acrylate;
• (b) mixing and heating the first mixture to a temperature effective to dynamically crosslink the elastomer while a thermoplastic polymer is being added to the first mixture whereby a second mixture is produced wherein the thermoplastic polymer is a polyalkylene phthalate polyester polymer or copolymer;
• (c) further mixing and heating the second mixture to produce a melt processible composition comprising 40 to 85 weight % of crosslinked elastomer dispersed in the thermoplastic polymer;
• and
• (d) recovering the composition.