Organopolysiloxanes having si-bonded hydrogen and sic-bonded epoxy groups and a process for preparing the same
CA 1234443 A · Owner: Wacker-Chemie Gmbh · Inventors: Kaufmann, Rudolf; Huhn, Karl
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Si-BONDED, HYDROGEN AND SiC-BONDED EPOXY GROUPS AND A PROCESS FOR PREPARING THE SAME, Abstract of the Disclosure Novel organopolysiloxanes are described in which the organopolysiloxanes are terminated by units of the formula R3SiO? and comprise units of the formulas RR1SiO RR2SiO, RR3SiO, RHSiO and R2SiO, where R represents the same or different alkyl radicals having from 1 to 4 carbon atoms per radical, or phenyl radicals, R1 represents the same or different alkyl radicals having at least 6 carbon atoms per radical R2, represents the same or different aralkyl radicals and R3 represents the same or different, SiC-bonded monovalent organic, radicals having at least one vicinal epoxy group …
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 March 22, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 22, 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.