Polypropylene resin composition
CA 2094476 A1 · Owner: Kobayashi, Yutaka · Inventors: Ohki, Ryuichi; Kobayashi, Yutaka; Hirano, Koki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed a polypropylene resin composition which comprises (a) polypropylene; (b) ethylene/.alpha.-olefin copolymer elastomer having a specific range of Mooney viscosity; (c) modifled polyolefin having a specific functioal group at either or both end thereof; and (d) specific compound such as stearic acid monoglyceride stearyl, diethanolamine, N-diethanol stearylamide and N-diethanol dodecaneamide. The above composition is excellent in elasticity, peeling strength and recoating properties can be, painted immediately after degreasing without pretreatment with trichloroethane, etc. and is well suited for polypropylene bumper materials to be painted etc.
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
- Filed April 20, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 20, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 20, 2015.
- 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.