Catalysts
CA 1318306 C · Owner: Runciman, Peter James Inglis · Inventors: Pickering, Anthony; Ballard, Denis George Harold; Runciman, Peter James Inglis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A catalyst for addition polymerisation comprising, (a) an (initiator) first component of formula (I):, M(Xm)(Yn)zP (I), wherein, M is Si Ge or Sn, m and p are each an integer and n is 0 or an, integer such that (m + n + p) =4;, X is QR1R22 where Q is N P, As or, P(=T)G.D where T is O or S and G and D are each independently a bond, O or S and R1 and R2 are each independently optionally substituted hydrocarbyl or together are optionally substituted hydrocarbadiyl which are inert in the process conditions of the present invention or, when Q is P(=T)G.D as hereinbefore defined R1, and R2 are each independently M(Yn)Zp as hereinbefore defined. Y is independently any group as defined for X, 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 May 25, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 25, 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
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.