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:
Oct. 24, 1995
Filed:
Sep. 19, 1994
Applicant:
Inventors:
Verson E Pandian, Corvallis, OR (US);
Dan van Calcar, Salem, OR (US);
Bernard W Wolff, Marietta, GA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
106194 ; 106205 ; 106209 ; 106210 ; 106214 ;
Abstract
An aqueous surface sizing composition for sizing paper or paperboard having as essential components 50 to 70 pads of a water soluble or water dispersible hydroxylated polymer, an amount of a carboxylated polymer that is present relative to hydroxylated polymer in a ratio of 0.5:99.5 to 4:96 and not exceeding 7 pads carboxylated polymer, 0.3 to 3.0 pads of an alkali salt of a Group IV metal (e.g., zirconium, hafnium, and titanium), and sufficient water to obtain 1.5 to 2.0 percent total solids. The sizing compositions may further include polymeric additives, aqueous alkali, a pigment and a defoamer.