Mechanically compatible polyurethane/polyolefin thermoplastic polymeric blends
CA 1338846 C · Owner: Noveon Ip Holdings Corp. · Inventors: Lee, Biing-Lin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Polymeric blends of thermoplastic polyurethane elastomers and crystalline or predominately crystalline polyolefin thermoplastics are produced by high shear mixing of melts of the respective polymers. The stabilized mechanically compatible blend of the ordinarily thermodynamically incompatible polymers comprises from about 3.5 to 20 parts by weight of a polyolefin homopolymer or copolymer with 100 parts by weiqht of polyurethane. The mechanically compatible polymeric blend is particularly useful for molding piastic articles by injection molding, extrusion, calendering or similar process for molding thermoplastic articles.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted January 14, 1997. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 14, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.