Method of continuous copolymerization of ethylene and vinylacetate
CA 1215495 A · Owner: Kuraray Co. Ltd. · Inventors: Satoh, Kenji; Yonezu, Kiyoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract:, The invention provides a method of continuously copolymerizing ethylene and vinyl acetate in a solvent in the presence of a radical initiator without causing gel formation. The method involves conducting the copolymerization reaction in the presence of a radical initiator whose halflife, when measured at 60%, is not longer than two hours.
Read the whole patent
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 December 16, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 16, 2003.
- 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.