The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 16, 1998
Filed:
Oct. 25, 1996
Applicant:
Inventors:
Thomas L Krinski, Granite City, IL (US);
Lawrence M Scacciaferro, St. Louis, MO (US);
Assignee:
Protein Technologies International, Inc., St. Louis, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D / ; C09J / ;
U.S. Cl.
CPC ...
1061572 ; 1061281 ; 1061311 ; 1061322 ; 1061341 ; 1061342 ; 1061511 ; 1061512 ; 1061552 ; 1061562 ; 10615623 ; 1061577 ; 10615771 ; 1061578 ; 1061579 ;
Abstract
A paper coating composition comprising a paper coating pigment and a protein adhesive. The protein adhesive contains a protein material and a dispersing agent, in an amount effective to adjust the pH of an aqueous solution containing the paper coating composition sufficiently to substantially solubilize the protein material, comprising a basic reagent containing a divalent cation and a cation binding agent. The cation binding agent is present in an amount effective to inhibit divalent cation induced gel formation and pigment flocculation.