Patent 7332560 was granted and assigned to Bayer MaterialScience on February, 2008 by the United States Patent and Trademark Office.
A thermoplastic molding composition comprising polycarbonate and at least one (co)polyformal is disclosed. Characterized by its low water absorption the composition is particularly suitable for producing molded articles, especially optical data carriers, such as compact disks, video disks, digital versatile disks and optical data carriers that are writable and erasable once or repeatedly.