Thermoplastic elastomer
CA 1269467 C · Owner: Yamamoto, Noboru · Inventors: Yamamoto, Noboru; Baba, Isao; Komatsu, Masato
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Partially crosslinked thermoplastic elastomer which is produced as follows:, (A) polpropylene (10-90 weight part) (B) halogenated, butyl rubber (90-10 weight part (A) + (B) = 100 weight, part), (C) olefinic rubber (10-120 weight part) and (D) mineral oil softening agent (5-120 weight part) are heated in the presence of (E) metal oxide and/or metal chrolide. To the composition based on (A)-(E) (100 weight part), (F) polyolefin (300-1900 weight part) and (G) styrenic rubber (50-1100 weight part) are blended. The composition has particularly good moldability compatibility, low temperature impact strength and gloss, and can be used for large scale molding.
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 May 22, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 22, 2007.
- 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.