Organosilicon compounds containing glycoside radicals and processes for their preparation
CA 2114922 C · Owner: Wacker-Chemie Gmbh · Inventors: Wimmer, Franz; Sejpka, Johann
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a process for the preparation of an organosilicon compound containing glycoside radicals which comprises, in a first stage, reacting a monosaccharide and/or oligosaccharide (1) with a compound (2) of the, formula, HO-(R2O)c-R4 (IV), in which R2 are each independently an alkylene radical c is 1 and, R4 is an alkenyl radical, in the presence of an acid and in a second stage neutralizing the acid and reacting the glycoside containing compound obtained in, the first stage with an organosilicon compound (3) containing Si-bonded hydrogen, containing units of the formula (see formula II) , in which, R5 are each independently a hydrocarbon radical having 1 to 18 …
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 February 3, 1994 and granted December 28, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 3, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 3, 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.