Polyolefin tanks internally coated with moisture hardening coating compositions and a process for their preparation
CA 2087284 A1 · Owner: Hense, Michael · Inventors: Henning, Wolfgang; Zollner, Franz-Ferdinand; Rummel, Rolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Mo-3831, LeA 28,854, POLYOLEFIN TANKS INTERNALLY COATED WITH MOISTURE HARDENING COATING COMPOSITIONS AND A PROCESS FOR THEIR PREPARATION ABSTRACT OF THE DISCLOSURE, The present invention relates to a process for coating the inside of a polyolefin plastic tank for storing liquid hydrocarbons by, I) coating the inside of the tank with i moisture-hardening coating composition having a viscosity at 23°C of 60 to 2,500 mPa.s and containing, a) at least one polyisocyanate containing biuret isocyanurate, uretdione and/or allophanate groups which is liquid at room temperature, is prepared from hexamethylene diisocyanate and has an isocyanate content of at least 10% by weight and, b) 0 to 5% by …
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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 January 14, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 14, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 14, 2015.
- 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.