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US 5,395,868 AGranted
Solution for anti-contaminant coating treatment for papermakers' fabrics
AssigneeHuyck Licensco, Inc.
InventorsMohan L. Sanduja, Paul Thottathil
Life of this patent
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Abstract
Coating solution for papermaking fabrics that includes as its primary components polytetrafluoroethylane, urethane copolymer and polyacrylamide. The coating composition is prepared in a solution, coated on the fabric and cured. A fabric thus treated has permanent anti sticking properties against pressure sensitive adhesives, pitch from wood pulp, ink deposition and the like.
Claims3
A papermakers' fabric anti-contaminant coating solution comprising an aqueous solution of, based upon 100 parts by weight:
- 20-30 parts by weight polytetrafluoroethylene;
- 20-30 parts by weight urethane prepolymer;
- 10-15 parts by weight polyacrylamide;
- 2-4 parts by weight acrylic polymer emulsion;
- 0.5-1.5 parts by weight methylene bisacrylamide;
- 0.5-1.5 parts by weight polyaziridine crosslinker;
- 0.5-1.5 parts by weight methyl pyrrolidone;
- 0.5-1.0 parts by weight ammonium persulfate 10% aqueous solution;
- 0.5-1.0 parts by weight sodium metabisulfite 10% aqueous solution;
- 0.5-1.0 parts by weight urea peroxide 0.1% aqueous solution and
- 0.0005-0.001 parts by weight silver nitrate 0.1% aqueous solution.
8 more elements
Dependencies are inferred from the claim text.