Elastomeric copolymers of ethylene with alpha-olefins and process for their preparation
CA 2123335 A1 · Owner: Montell Technology Company B.V. · Inventors: Galimberti, Maurizio; Albizzati, Enrico; Resconi, Luigi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Amorphous copolymers of ethylene with .alpha.-olefins and optionally minor amounts of polyenes are disclosed having the, following characteristics: (A) the % by mole content of .alpha.-olefin in the copolymer (%.alpha.) and the ratio between the molar amount of .alpha.-olefin diads and the molar content of .alpha.-olefin in the copolymer (.alpha..alpha./.alpha.) satisfy the following relationship:, (%.alpha.) - 250 (.alpha..alpha./.alpha.) ? 10 (B) less than 2% of the CH2 groups in the polymeric chain are in sequences (CH2)n, wherein n is an even number. These copolymers are obtainable by operating in the presence of particular metallocene-based catalysts having two fluorenyl groups joined …
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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 May 11, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 11, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 11, 2016.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.