Heat coagulable paper coating composition with a soy protein adhesive binder
CA 1189254 A · Owner: Ralston Purina Company · Inventors: Graham, Paul M.; Krinski, Thomas L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A method of producing a paper coating composition containing a soy protein adhesive binder which is thermally sensitive or coagulates with heating is described wherein a soy protein isolate is solubilized to form a proteinaceous adhesive binder, said binder is mixed with a mineral pigment to provide a slurry having a solids level of at least about 36% by weight of the slurry followed by con-, trol of the pH of the slurry to between about 5.7 to 6.2 and the addition of a salt selected from the group consisting of Zinc Acetate and Zinc Formate in amounts effective to cause heat coagulation of said slurry upon heating thereof. The coating is particularly used in cast …
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 June 25, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 25, 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.