Butene-1 copolymer composition
CA 1323716 C · Owner: Idemitsu Petrochemical Company Limited · Inventors: Yamawaki, Takashi; Kondo, Masahiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a butene-1 copolymer composition which has excellent heat sealing properties mechanical characteristics, moldability and transparency, without lowering its surface characteristics and is, characterized by containing 75 to 99.5% by weight of a butene-1 copolymer comprising butene-1 unit and .alpha.-olefine having a carbon number of 2 to 3, and 25 to 0.5% by weight of a propylene polymer, the said butene-1 copolymer has an .alpha.olefine unit content of 1 to 35 mol%, intrinsic viscosity of 0.9 to 7.2 dl/g, weight-average molecular weight/numberaverage molecular weight of 4 to 15, and the content of the boiling diethyl ether soluble component is 3 to 15% by …
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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 October 26, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 26, 2010.
- 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.