Fluoroelastomer latex
CA 1052488 A · Owner: E.I. Du Pont De Nemours And Company · Inventors: Barber, Charles L. (Jr.); Arruda, Paul J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fluoroelastomer latex which remains useful after being stored for a long period of time and which can be produced by a process employing a relatively brief residence time in the reactor can be prepared by (A) forming an aqueous emulsion of monomers capable of being copolymerized into a fluoroelastomer, said emulsion comprising (1) vinylidene fluoride plus at least one other fluorine-containing monomer, (2) a specified amount of lithium ion and (3) an, inorganic free-radical initiator; (B) subjecting said emulsion to copolymerization to form a fluoroelastomer latex; and (C) adding a creaming agent to the latex; and optionally carrying out creaming of the latex to form a layer of creamed …
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 April 10, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 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.