Use of carbonyl stabilizers for 3-isothiazolones
CA 2029302 A1 · Owner: Rohm And Haas Company · Inventors: Willingham, Gary L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed herein are compositions comprising a) at least one 3-isothiazolone of the formula (I) (I), wherein, Y is an unsubstituted or substituted (C1 - C18) alkyl an, unsubstituted or substituted (C3 - C12) cycloalkyl an, unsubstituted or halogen-substituted (C2-C8) alkenyl or alkynyl, an unsubstituted or substituted (C7-C10) aralkyl or, an unsubstituted or substituted aryl; and R and R1 is each independently H, halogen or (C1-C4) alkyl; and, b) a carbonyl compound selected from the group consisting of (C2-C6) aldehydes, (C7-C10) aromatic aldehydes or acids, (C2-C4) dialdehydes (C1-C12) acids, (C2 -, C8) diacids, triacids or tetracids (C3-C10) .alpha..beta. unsaturated, carbonyls (C1-C6) …
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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 November 5, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 5, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 5, 2012.
- 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.