Epoxy alkoxy siloxane oligomers
CA 2398550 A1 · Owner: Crivello, James Vincent · Inventors: Crivello, James Vincent
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Polymerizable siloxane oligomers comprising a plurality of repeating units of formula (A) and at least one unit of formula (B) and terminating in a residue R2 or R8 are disclosed. In these formulae FG is a functional group such as 2-, (3,4-epoxycyclohexylethyl) and the R groups are alkyl, aryl, haloalkyl aralkyl, alkoxy or aryloxy of 1 to 10 carbons. Processes for preparing the oligomers by hydrolysis/condensation of monomers of formula (RO)3Si FG and one or more alkoxy silane monomers of formula R3R4R8SiOR2a are also disclosed as , are polymers resulting from the cationic polymerization of the oligomers.
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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
- Filed March 30, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 30, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 30, 2022.
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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.