Process for the preparation of urea condensates and their use
CA 1236631 A · Owner: Basf Farben + Fasern Aktiengesellschaft · Inventors: Schupp, Eberhard; Osterloh, Rolf; Loch, Werner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a process for the preparation of urea condensates and to their use as binder components in thermosetting surface coatings. To prepare these urea condensates, a primary di-and/or polyamine is reacted with urea, a secondary monoamine and, if appropriate a po-, lyalcohol at elevated temperatures in the presence or absence of catalysts, and the ammonia formed is separated off.
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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 May 10, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 10, 2005.
- 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.