Catalyst for olefin polymerization
CA 1308092 C · Owner: Matsuura, Mitsuyuki · Inventors: Fujita, Takashi; Matsuura, Mitsuyuki
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:, Component (A) which is a solid catalyst component obtained by contacting the following components (i) to (iv):, (i) a solid component comprising titanium magnesium and halogen as essential elements (ii) a silicon compound represented by the formula (I):, R1mXnSi(OR2)4-m-n .... (I), wherein R1 and R2 each represent a hydrocarbon residue, X represents a halogen and each of m and n is an integer in the range of 0?m?3, 0?n?3, and 0?m+n?3, (iii) a titanium compound or a silicon compound represented by the formula (II) or (III): Ti(OR3)4-?X? .... (II), R44-?SiX? .... (III) wherein R3 represents a hydrocarbon residue R4 represents hydrogen or …
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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 September 29, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 29, 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
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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.