Elastoplastic compositions of ethylene-vinyl acetate rubber and polyolefin resin
CA 1099839 A · Owner: Monsanto Company · Inventors: Coran, Aubert Y.; Patel, Raman P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides an elastoplastic composition useful for making a variety of shaped articles such as tires hoses, belts, gaskets, moldings and molded parts. The elastoplastic composition comprises a blend of about 65 to about 15 parts by weight thermoplastic crystalline polyolefin resin and about 35 to about 85 parts by weight cross linked EVA rubber, and rubber plasticizer in an amount of 0 - 50 weight percent of the EVA rubber. The EVA rubber is an amorphous copolymer of ethylene and 40 to 70 percent by weight vinyl acetate. The rubber is further characterized in that it is cross-linked to the extent that the toluene extractables as percent of rubber is 15 or less with the proviso …
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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 April 21, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 21, 1998.
- 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.