Oxime-functional moisture-curable hot melt silicone pressure-sensitive adhesives
CA 2125366 A1 · Owner: Dow Corning Corporation · Inventors: Schoenherr, William Joseph; Vincent, Harold Lewis; Cifuentes, Martin Eric
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A moisture-curable silicone hot-melt adhesive composition is disclosed, which composition comprises (i) a solid hydroxyl-functional organopolysiloxane resin comprising R3SiO1/2 siloxane units and SiO4/2 siloxane units in a molar ratio of 0.5/1 to 1.2/1 wherein R is, selected from hydrocarbon or halogenated hydrocarbon radicals;, (ii) a diorganopolysiloxane polymer having siliconbonded hydroxyl terminal groups and having a viscosity at 25°C. of 100 to 500,000 mPa?s (centipoise) the weight ratio, of said resin (i) to said polymer being (ii) in the range 40:60 to 75:25;, (iii) a ketoximosilane the amount of said, ketoximosilane being sufficient to provide a molar ratio of X groups to total …
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 June 7, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 7, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 7, 2016.
- 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.