Patent · US Active

Heat-conducting polycarbonates having improved flame protection by means of barium sulfate

US11912865B2 · kind B2 · utility

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1References

13Claims

0Family size

Assignee

Covestro Intellectual Property GmbH & Co. KG · DE

Inventors

Christopher Schirwitz · Leverkusen, DE
Tim Hungerland · Cologne, DE
Tanja Grueter-Reetz · Krefeld, DE
Helmut Kruells · Meerbusch, DE

Key dates

Filing date	Apr 9, 2020
Grant date	Feb 27, 2024
Priority date	—
Expiry date	Sep 27, 2040

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L2201/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a thermoplastic composition comprising at least one aromatic polycarbonate, talc, at least one anhydride-modified alpha-olefin polymer, at least one organic flame retardant selected from: fluoropolymer-containing anti-drip agents, fluorinated sulfonic acid salts, organic phosphoric acid esters, phosphazenes or mixtures of at least two of the abovementioned agents and barium sulfate. The invention further relates to a production process for such a composition and to a molded article producible from this composition.The composition contains barium sulfate in an amount of ≥3% by weight based on the total weight of the composition. ≥5% by weight is preferred.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.