Molding compositions comprising carbonate polymer,...

Details Molding compositions comprising carbonate polymer,... Molding compositions comprising carbonate polymer,...

C - Chemistry, Metallurgy

08

L

400/3035, 18/509

C08L 69/00 (2006.01) B29C 49/00 (2006.01)

Patent

CA 2014475

ABSTRACT Carbonate polymers (PC) such as randomly branched carbonate polymers and blends thereof with linear carbonate polymers are blended with ABS polymers and MBS polymers which enhance the melt strength of polymer composition. The ABS polymers have less than 40 weight percent rubber and greater than 18 percent by weight acrylonitrile. The MBS polymers have greater than 40 weight percent rubber and an outer polymer shell made from alkyl (meth)acrylates. This locates the MBS rubber modifier in the PC phase and in the PC/ABS interface so that higher melt elasticity is achieved and the compositions are therefore useful in blow molding and thermoforming applications.

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