Process to produce novel fluorocarbon vinyl etheric polymers
CA 1186100 A · Owner: The Dow Chemical Company · Inventors: Ezzell, Bobby R.; Carl, William P.; Mod, William A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A polymerization method comprising reacting in the presence of an initiator, at least two different types of monomers for a time and a temperature sufficient to cause polymerization: wherein at least one monomer is selected from a first group of compounds represented by the formula where n = 1 or an integer greater than 1; X is Cl, Br or mixtures thereof when n > 1; Y is an acid group or an acid derivative easily convertible to an acid group;, Rf and R? are independently selected from the group consisting of F, Cl, a perfluoroalkyl radical and a chlorofluoroalkyl radical; a = 0 or an integer greater than 0;, b = 0 or an integer greater than 0; and at least one monomer is selected from a …
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 23, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 23, 2002.
- 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.