Modified polymers with a high proportion of cis-position double bonds, method for the production and use thereof
CA 2444713 A1 · Owner: Knauf, Thomas · Inventors: Braubach, Wilfried; Gruen, Michael; Knauf, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to polymers which are modified along a polymer chain on the basis of conjugated dienes or conjugated dienes and vinyl aromatic compounds having a proportion of vinyl aromatic compounds of up to 60 wt. % a , proportion of cis-position double bonds of >= 92 % an average molecular , weight of between 50 000 - 1 500 000 g/mol and a gel content of <= 5 %. The inventive polymers can be used in the production of all kinds of moulded bodies, whereby the technical and physical characteristics thereof are improved, particularly compared to prior art.
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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 April 11, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 11, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 11, 2024.
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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.