High stiffness propylene polymer composition
CA 1318056 C · Owner: Nakazima, Hirokazu · Inventors: Nakazima, Hirokazu; Suzuki, Akio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A high stiffness propylene polymer composition comprising 100 parts by weight of a crystalline propylene homopolymer or crystalline ethylene-propylene block copolymer having a specific molecular weight distribution and a specific isotactic pentad ratio and from 0.01 to 1 part by weight of a phosphate compound represented by formula (I) wherein R1, R2, R3, M and n are as defined in the specification. The composition is excellent in postprocessability of a sheet when molded into a sheet blow, moldability, stiffness, and heat distortion resistance.
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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 18, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 18, 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
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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.