Melt strength thermoplastic elastomers and methods for making same
CA 2467339 A1 · Owner: Solvay Engineered Polymers · Inventors: Ding, Ruidong; Reid, Charles G.; Zhao, Xia
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The melt strength is increased and the gloss level is reduced in olefinic TPE compositions through the addition of sufficient amounts of free radical generators (A) and co-curative agents (B). The free radical generators (A) include peroxides, organic peroxides, the persulfates and the diazo , compounds, and mixtures thereof. The co-curative agents (B) includes metal salts of alpha, beta-unsaturated carboxylic acids and alpha beta-unsaturated , carboxylic acids where the pending acid group has been neutralized or , mixtures thereof, and the metals for forming the metal salts of co-curative agent (B) include zinc, lithium, calcium magnesium, sodium or aluminum, or , mixtures thereof.
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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 October 1, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 1, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 1, 2024.
- 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.