Thermoplastic vulcanizates of olefin rubber and polyolefin resin
CA 1101578 A · Owner: Monsanto Company · Inventors: Patel, Raman P.; Das, Balbhadra; Coran, Aubert Y.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides compositions comprising blends of polyolefin resin and monoolefin copolymer rubber characterized by the rubber being fully cured but the, blends nevertheless being processable as thermoplastic and having improved physical properties as compared to uncured or partially cured blends; the blends comprise from about 35-95 parts by weight of resin and between 75-5 parts by weight rubber. The invention also provides a method for preparing the compositions. The improved products are all processable in an internal mixer to products which upon transferring at temperatures above the softening or crystallizing points of the resin phases to the rotating mills of a rubber mill, …
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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 May 19, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 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.