C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
6/57
C08L 89/00 (2006.01) D21H 19/50 (2006.01)
Patent
CA 1189254
HEAT COAGULABLE PAPER COATING COMPOSITION WITH A SOY PROTEIN ADHESIVE BINDER Abstract of the Disclosure A method of producing a paper coating composi- tion 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 coating processes, involving the application of heat to achieve uniform smoothness of the applied coating on paper.
422333
Graham Paul M.
Krinski Thomas L.
Meredith & Finlayson
Ralston Purina Company
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