Catalyst for olefin polymerization
CA 1306736 C · Owner: Mitsubishi Petrochemical Co. Ltd. · Inventors: Matsuura, Mitsuyuki; Fujita, Takashi; Hirakawa, Katsumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A catalyst for olefin polymerization which comprises a combination of Component A, a solid catalyst component,obtained by contacting a component (i), which is a solid component comprising titanium, magnesium and halogen as essential elements with a component (ii), which is a silicon compound represented by formula RlR23-nSi(OR3)n where R1 stands for a branched hydrocarbon residue, R2 stands for a hydrocarbon residue which is the same as or different from R1, R3 stands for a hydrocarbon residue and n stands for a number satisfying an equation: l?n?3 Component B which is an organoaluminum compound and Component, C which is compound represented by a formula M(OR4)xR5yXz in which M stands for …
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 August 25, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 25, 2009.
- 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.