US Patent 7297735 Polycarbonate compositions

Patent 7297735 was granted and assigned to Eastman Chemical Company on November, 2007 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Eastman Chemical Company

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7297735

Date of Patent

November 20, 2007

Patent Application Number

10639712

Date Filed

March 5, 2003

Patent Primary Examiner

‌

Kriellion Sanders

Patent abstract

This invention relates to polycarbonate compositions comprising:(A) at least one polycarbonate comprising repeating units derived from a dihydroxyaromatic compound or a dihydroxyaliphatic compound of the formula HO—Y—OH; and(B) at least one salt prepared from the reaction of one or more acidic phosphorus-containing compounds and one or more hindered amine light stabilizers. The polycarbonate compositions exhibit improved hydrolytic stability.