Poly(ester) carbonate molding compositions
AssigneeBayer Aktiengesellschaft
InventorsAndreas Seidel, Thomas Eckel, Holger Warth
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Abstract
A thermoplastic molding compositions having improved stress cracking resistance is disclosed. The composition contains A) 40 to 99.5 parts by weight of at least one branched resin selected from a first group consisting of aromatic polycarbonate and polyestercarbonate and B) 0.5 to 60 parts by weight of graft polymer containing a grafting shell and a grafting base, said grafting base being other than polybutadiene rubber. The structure of the branched resin contains at least one residue of a branching agent selected from among tri-functional phenolic monomer and tetra-functional phenolic monomer.
Claims22
A thermoplastic molding compositions comprising
- A) 40 to 99.5 parts by weight of at least one branched resin selected from a first group consisting of aromatic polycarbonate and polyestercarbonate and
- B) 0.5 to 60 parts by weight of graft polymer containing a grafting shell and a grafting base, said grafting base being other than polybutadiene rubber,
- wherein the structure of the branched resin contains at least one residue of a branching agent selected from a second group consisting of tri-functional phenolic monomer and tetra-functional phenolic monomer.
The composition of claim 14 wherein C1- to C8-alkyl, C5-to C6-cycloalkyl are substituted by an alkyl group.
Dependencies are inferred from the claim text.