CATALYST AND PROCESS FOR PRODUCING .alpha.-OLEFIN POLYMERS USING THE SAME
CA 1263370 C · Owner: Katao, Masaaki · Inventors: Sasaki, Toshio; Shiga, Akinobu; Katao, Masaaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A catalyst comprizing:, (A) a solid catalyst component containing a tri-valent titanium compound, which is obtained by reducing a titanium compound represented by the general formula, Ti(OR1)nX4-n (wherein R1 is a hydrocarbon group having 1 to 20 carbon atoms, X is a halogen atom and n is a number satisfying 0<n?4 with an organo magnesium compound in the presence of an organo silicon, compound having Si-O bonds and then treating the resulting solid product with an ester compound and a mixture of an, ether compound and titanium tetrachloride (B) an organo aluminum compound, and, (C) a silicon compound having Si-OR2 bonds (wherein R2 is a hydrocarbon group having 1 to 20 carbon atoms) and/or …
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 November 28, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 28, 2006.
- 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.