Functional ionene compositions and their use
CA 1057892 A · Owner: Ecc Specialty Chemicals Inc. · Inventors: Schaper, Raymond J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel functional ionene polymer compositions have been prepared which have been found to be useful in a wide variety of applications, including among other, as wet and dry strength additives corrosion inhibitors, and electroconductive coatings and which comprise recurring, units of the formula: wherein R represents the group CH2 and/or a substituted CH2 group where one of the hydrogen atoms of the group is replaced by alkyl or hydroxymethyl;, wherein Y is a member selected from the groups consisting of, , , -C ? C- , -O- , , , -OCH2CH2O- , -OCH2O- , -S- , -SO- , -SO2- , and, aryl; wherein R1 represents the group:, where R3 is hydrogen halogen, alkyl, cycloalkyl, aryl, alkaryl or aralkyl; …
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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 July 3, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 3, 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.