Elastomers with improved processability
CA 2301526 A1 · Owner: Dow Global Technologies Inc. · Inventors: Rowland, Michael E.; Kao, Che-I
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for improving the green strength of ethylene/.alpha.-olefin/diene polymers is described comprising (A) selecting an ethylene/.alpha.olefin/diene polymer having a Mooney viscosity at 125 C up to about 80 and a percent gel (%gel) up to about 30 percent and (B) partially cross-linking the ethylene/.alpha.-olefin/diene polymer selected in step (A) to make a modified ethylene/.alpha.-olefin/diene polymer satisfying the equations MV100 and (I) wherein MV is the Mooney viscosity of the modified polymer MS1 is the melt , strength in centiNewtons of the polymer selected in step (A) at 110 C when , formulated according to ASTM D3568#2 MS2 is the melt strength in centiNewtons of the …
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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 August 25, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 25, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 25, 2020.
- 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.