Novel benzylidenecyanoacetates and a method for making benzylidenecyanoacetates
CA 2377176 A1 · Owner: Lord Corporation · Inventors: Righettini, Robin F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Benzylidenecyanoacetates having a structure represented by (A) wherein each R4 and R5 is the same or different and is selected from alkoxy alkyl or alkyl , ether. These benzylidenecyanoacetates are liquid at room temperature have low , volatility and are odor free and thus, are useful in formulating adhesives and coatings. There is also provided a method for making a benzylidenecyanoacetate having a structure represented by formula (B) the method including: (e) reacting an alkyl cyanoacetate with a benzaldehyde to produce an alkyl benzylidenecyanocetate and then (f) reacting the resulting alkyl benzylidenecyanoacetate with a hydroxy-functional reactant to produce the …
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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 June 8, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 8, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 8, 2022.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.