Polycarbonate molding compositions
AssigneeBayer Aktiengesellschaft
InventorsManfred Grundmeier, Rudolf Binsack, Hugo Vernaleken
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Abstract
The present invention is concerned with polycarbonate molding resins with improved flow and strength properties which contain about 10 to 40 wt.% glass fibers and about 0.5 to 5 wt. % of polyalkylene glycol terephthalate or about 0.5 to 10 wt.% of polyalkylene glycol isophthalate.
Claims29
Thermoplastic molding compositions comprising
- a. high molecular aromatic polycarbonates based on diphenols,
- b. about 10% by weight to 40% by weight based on the polycarbonate + glass fibers, of glass fibers, and
- c. about 4% by weight to 0.5% by weight, based on the total mixture, of a polyalkylene glycol terephthalate,
- or
- a. high molecular aromatic polycarbonates based on diphenols
- b. about 10% by weight to 40% by weight, based on the total mixture, of glass fibers and
- c. about 10% by weight to 0.5% by weight, based on the total mixture of a polyalkylene glycol isophthalate.
Thermoplastic molding compositions comprising
- a. high-molecular aromatic polycarbonates based on diphenols
- b. about 10% by weight to 40% by weight, based on the polycarbonate + glass fibers, of glass fibers
- c. about 4% by weight to 1% by weight, based on the total mixture, of a polyalkylene glycol terephthalate.
Thermoplastic molding compositions comprising
- a. high-molecular aromatic polycarbonates based on diphenols
- b. about 10% by weight to 40% by weight, based on the total mixture, of glass fibers and
- c. about 10% by weight to 0.5% by weight, based on the total mixture, of a polyalkylene glycol isophthalate.
A process for improving the melt viscosity of high molecular weight aromatic polycarbonate molding resins containing about 10 to 40 wt.% glass fibers, based on the weight of the polycarbonate and glass fibers, comprising incorporating about 0.5 to 4 wt.%, based on the weight of the total mixture, of a polyalkylene glycol terephthalate into the molding resin.
A process for improving the melt viscosity of high molecular weight aromatic polycarbonate molding resins containing about 10 to 40 wt.% glass fibers, based on the weight of the polycarbonate and glass fibers, comprising incorporating about 0.5 to 10 wt.%, based on the weight of the total mixture, of a polyalkylene glycol isophthalate into the molding resin.
Dependencies are inferred from the claim text.