Polyurethane compositions with improved storage stability
CA 1297622 C · Owner: Schmitt, Peter D. · Inventors: Schmitt, Peter D.; Markusch, Peter H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Mo-2739, PC-151, POLYURETHANE COMPOSITIONS WITH IMPROVED STORAGE STABILITY, ABSTRACT OF THE DISCLOSURE The present invention is directed to a process for improving the storage stability of a composition containing, a) a blocked polyisocyanate component prepared by blocking the isocyanate groups of an organic polyisocyanate with a blocking agent comprising a di- C1-C12-alkyl and/or -alkoxyalkyl malonate and b) a high molecular weight component comprising a compound containing at least two isocyanate-reactive hydrogens, which comprises incorporating a stabilizing amount of a low molecular weight compound having at least 2 hydroxyl groups into the composition by adding said compound to …
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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
- Granted March 17, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 2009.
- 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.