Heat-foamable crosslinked propylene resin composition in the form of a melt-shaped sheet structure
CA 1269494 C · Owner: Sasaki, Zenichi · Inventors: Sasaki, Zenichi; Hashimoto, Takashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A heat-foamable crosslinked propylene resin composition in the form of a melt-shaped sheet structure comprising, 1 100 parts by weight of a crosslinked propylene resin composition obtained by mixing at least four components composed of (A) a propylene resin (B) an olefin, resin other than the resin (A) (C) a radical initiator and, (D) a crosslinking agent and, 2 0.5 to 5 parts by weight of a blowing agent; wherein, (a) the propylene resin (A) is in an amount of 60 to 95 parts by weight per 100 parts by weight of the resins (A) and (B) combined, and has a melt flow rate (MFR) of 0.1 to 50 g/10 min. and, (b) the alpha-olefin resin (B) is in an amount of S to 40 parts by weight per 100 parts …
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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 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.