Process for preparing a mixture of bitumen, a high-boiling hydrocarbon and a rubber-like copolymer of ethylene, at least one other alkene and, if necessary, one or more polyenes
CA 1061494 A · Owner: Stamicarbon B.V. · Inventors: Van Der Loos, Jozef L.M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mixture containing bitumen a high-boiling hydrocarbon and an, EPDM-rubber is prepared by dissolving the EPDM under special conditions in the hydrocarbon and by subsequently mixing the resulting solution with bitumen. An improved bitumen is obtained that can be applied for instance, in road, construction. Preferably during the dissolution of EPDM in hydrocarbon oxygen, is incorporated into the mixture in a forced manner in order to achieve improved dispersion.
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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
- Granted August 28, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 28, 1996.
- 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.