Oligomer silasesquioxanes, method for the production thereof, and use of the same
CA 2513002 A1 · Owner: Jost, Carsten · Inventors: Kuhnle, Adolf; Abbenhuis, Hendrikus Cornelius Louis; Jost, Carsten
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 method for producing fully condensed oligomer silasesquioxanes of formula R1aR2bR3cR4dR5eR6fR7gR8hSi8O12 wherein R1 R2, R3, R4, R5, R6, R7, R8 represent substituted or unsubstituted alkyl cycloalkyl, alkenyl, cycloalkenyl, alkinyl cycloalkinyl, aryl, heteroaryl radicals or hydrogen which are the same or different and a + b + c + d + e + f + g + h = , 8 said compounds having the structure (1). The invention also relates to the use of said compounds for the synthesis of partially condensed silasesquioxanes, functionalised silasesquioxanes catalysts, and the parent , compounds thereof and for the synthesis and modification of polymers.
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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
- Filed January 9, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 9, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 9, 2025.
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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.