Patent ID: 7041732

Claim:
A process of making a compatible thermoplastic molding composition comprising reactive blending, in the melt and in the presence of a transesterification catalyst, a polycarbonate, a vinyl (co)polymer and a hydroxy-containing compatibilizer that is the polymerized reaction product of (a) and (b) wherein (a) is at least one vinyl monomer that contains no hydroxy groups and where (b) is a hydroxyl containing monomer conforming to (I) where R denotes H or C 1 –C 4 alkyl, R 1 denotes H, Cl, Br, C 1 –C 4 alkyl, cyclohexyl, or C 1 –C 4 alkoxy, a is 0 or 1, b is 0 or 1, c is 0 or 1, n is an integer of 0 to 4, and X is an OH group, and wherein vinyl (co)polymer is selected from the group consisting of SAN, ABS, homopolyolefin, homopolymethacrylate, homopolyacrylate and homopolystyrene.