Rosin dispersions of improved stability
CA 1084801 A · Owner: American Cyanamid Company · Inventors: Moore, Sewell T.; Kulick, Russell J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Colloidal aqueous dispersions of rosin possess improved mechanical- and heat-stability when they have a small dissolved content of a water-dispersible hydrophobic-hydrophilic emulsifying agent carrying at least one sulfo substituent, at least one carboxy substituent and at least one alkly hydrophobic substituent of at least 6 carbon atoms as agent improving the mechanical stability of said dispersion.
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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 September 2, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 2, 1997.
- 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.