PROCESS FOR PREPARING HIGHLY STEREO REGULAR POLYMERS OR COPOLYMERS OF .alpha.-OLEFINS CONTAINING AT LEAST THREE CARBON ATOMS, AND CATALYSTS USED THEREFOR
CA 1077012 A · Owner: Mitsui Petrochemical Industries · Inventors: Kashiwa, Norio; Odawara, Kiyoshi; Toyota, Akinori
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Highly stereoregular polymers or copolymers of .alpha.-olefins containing at least 3 carbon atoms are prepared in high yields by polymerizing or copolymerizing the .alpha.-olefins in the presence of a catalyst composed of (a) an improved solid transition metal catalyst component prepared by reacting (1) a magnesium-containing reaction product derived from a member of the group consisting of (i) a magnesium halide (ii) an, active hydrogen-containing compound (iii) an organic acid ester and (iv), a silicon or tin compound containing at least one halogen atom or hydrocarbon group bonded directly to silicon or tin with (2) (a) titanium compound and, (b) an organometallic compound of a metal …
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 May 6, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 6, 1997.
- 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.