A process for recovering and recycling organic binder components from a coatings slurry
CA 2089505 A1 · Owner: Bayer Aktiengesellschaft · Inventors: Schoenfelder, Manfred; Meixner, Juergen; Hovestadt, Wieland
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Mo3853, LeA 28,912, A PROCESS FOR RECOVERING AND RECYCLING ORGANIC BINDER COMPONENTS FROM A COATINGS SLURRY ABSTRACT OF THE DISCLOSURE, The present invention relates to a process for recovering and recycling the organic binder components accumulating during the spraying of a solvent-containing, two-component polyurethane coating or a solvent-containing moisture-curing, one-component polyurethane coating by i) forming a coatings slurry containing the organic binder components, water and a coagulating agent ii) mixing the coatings slurry, optionally after removing a portion of the water, with an organic solvent which is inert towards isocyanate groups, iii) reacting the free isocyanate groups …
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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 February 15, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 15, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 15, 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.