But-1-ene molding resin blends
CA 1311070 C · Owner: Shell Oil Company · Inventors: Hughes, Patrick M.; Hwo, Charles C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition is disclosed comprising a blend of from 50 to 80% by weight of an isotactic but-1-ene homopolymer having a melt index of 225 or less, from 13.5 to 40% by weight of a stabilized propylene polymer and from 0.02 to 1.5% by weight of high density polyethylene. A mold release agent may be included in an amount of 0.1 to 1% by weight. Molded articles made from the composition are also disclosed.
Read the whole patent
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 December 1, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 1, 2009.
- 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.