1. Polymer blends [P]. U.S. Pat. 5,352,735 (1994).
2. Polymer blends of nylon and PVC[A]. In Proceeding of the 54th Technical Conference of Society of Plasitics Engineers [C]. Connecticut: Society of Plastics Engineers, 1996; p 3380.
3. Polymer blends [P]. WO Patent: WO 97/08242. 1997-03-06.
4. Polymer blends [P]. U.S. Pat. 5,856,405 (1999).