Polycarbonate molding materials
AssigneeBayer Aktiengesellschaft
InventorsSiegfried Adelmann, Dieter Margotte, Josef Merten, Hugo Vernaleken
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Abstract
This invention relates to thermoplastic polycarbonate molding materials having improved flame resistance and hydrolysis resistance. These materials comprise intimate blends of aromatic high molecular weight polycarbonates and about 0.5 to 50 wt. % of polyphenylene sulphides. This invention also relates to a process for improving the flame resistance and hydrolysis resistance of aromatic polycarbonates by intimately blending them with about 0.5 to 50 wt. % polyphenylene sulphide.
Claims10
Thermoplastic polycarbonate molding materials based on high molecular weight, aromatic, thermoplastic polycarbonates having molecular weights, M.sub.w, of about 10,000 to 200,000, characterized in that they contain about 0.5 - 50% by weight of a polyphenylene sulphide, based on the total weight of polycarbonate + polyphenylene sulphide.
A thermoplastic molding material comprising an intimate blend of
- a. an aromatic thermoplastic polycarbonate having a molecular weight, M.sub.w, of between about 10,000 and 200,000, and
- b. about 0.5 to 50 wt.% based on the total weight of the material of polyphenylene sulphide based on unsubstituted 1,4-phenylene and having a glass transition temperature of between about 85.degree. and 95.degree. C.
A process for improving the flame resistance and hydrolysis resistance of thermoplastic aromatic polycarbonates having molecular weights, M.sub.w, of between about 10,000 and 200,000 comprising intimately blending said polycarbonates with about 0.5 to 50 wt.% of polyphenylene sulphide.
Dependencies are inferred from the claim text.