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US 4,052,356 AGranted
Molding compounds based on polybutylene terephthalate
AssigneeCiba-Geigy Corporation
InventorsFranz Breitenfellner, Josef Hrach
Life of this patent
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Abstract
Reinforced polybutylene terephthalate which contain kaolin have improved arc resistance with at the same time improved tracking resistance.
Claims6
A moulding compound with improved arc resistance and tracking resistance, consisting of
- a. a polybutylene terephthalate,
- b. 5 to 50 percent by weight, referred to the total composition, of a kaolin, and
- c. 5 to 40 percent by weight, referred to the total composition, of a reinforcing filler, the amount of kaolin and reinforcing filler being at most 60 percent by weight of the total composition.
Dependencies are inferred from the claim text.