Curable composition
CA 2302934 A1 · Owner: Iwakiri, Hiroshi · Inventors: Iwakiri, Hiroshi; Jyono, Hideharu; Odaka, Hidetoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention has its object to provide a curable composition showing a controlled initial curing rate and hence, offering good workability by introducing a methyl group into the neighborhood of the reactive silicon group within an oligomer to indirectly lower the reactivity of the reactive silicon group within the oligomer. The present invention is concerned with a curable composition comprising (A) a reactive silicon group-containing polyether oligomer and (B) a silanol condensation catalyst said (A) reactive silicon group-containing polyether oligomer having a partial structure of the following general formula (1) per molecule:, -O-R1-CH (CH3)-CH2-(Si(R2 2-b) (X b)O) m Si(R3 3-a …
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
- Filed March 23, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 23, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 23, 2022.
- 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.