N,n'-bis(trans-4-isocyanatocyclohexyl)urea, a process for its preparation and its use
CA 1317307 C · Owner: Ruckes, Andreas · Inventors: Ruckes, Andreas; Grogler, Gerhard; Rasshofer, Werner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Mo-3079, LeA 25,619, N,N'-BIS(TRANS-4-ISOCYANATOCYCLOHEXYL)UREA A PROCESS FOR ITS PREPARATION AND ITS USE ABSTRACT OF THE DISCLOSURE, The present invention relates to N,N'-bis- (4-isocyanatocyclohexyl)urea obtained from the reaction with water of cyclohexane-1,4-diisocyanate having a high trans isomer content. This invention further relates to the process for preparing the N,N'-bis(4-isocyanatocyclohexyl)urea and to its use in the synthesis of polyurethanes. Le A 25 619
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
- Granted May 4, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 4, 2010.
- 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.