Back to results
US 7,332,560 B2Granted
Thermoplastic molding compositions having reduced water absorption
AssigneeBayer MaterialScience AG
InventorsHelmut-Werner Heuer, Rolf Wehrmann
Life of this patent
Estimating the term…
Abstract
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.
Claims17
A thermoplastic molding composition comprising polycarbonate and polyformal, said polyformal including repeating structural unit conforming to formula (1)
- wherein
- D represents an aromatic radical having 6 to 40 carbon atoms, said radical optionally containing hetero atoms, and is optionally substituted by C1-C12-alkyl, and/or by halogen, and is further optionally containing aliphatic or cycloaliphatic radicals.
Dependencies are inferred from the claim text.