Solvent-free two-component polyurethane reactive adhesives and their use for producing sandwich-type interior panelling for vehicles
CA 2136676 A1 · Owner: Konig, Eberhard · Inventors: Wegener, Dirk; Gronemeier, Uwe Fritz; Konig, Eberhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to solvent-free two-component polyurethane reactive adhesives comprising, (A) a polyisocyanate component based on diphenylmethane diisocyanates, (B) a water-containing polyol component having a maximum of three OH groups, a water content of 0.25 to 2.0 wt.% and an OH value, of 300 to 600, and, optionally (C) auxiliary substances and additives wherein component (A) and component (B) are present in proportionate amounts such that the isocyanate index is 120 to 250. These adhesives are used for producing sandwich-type interior panelling for vehicles.
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 November 25, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 25, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 25, 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.