Use of zirconium salts to improve the surface sizing efficiency in paper making
AssigneeHopton Technologies, Inc.
InventorsVerson E. Pandian, Dan V. Calcar, Bernard W. Wolff
Life of this patent
Estimating the term…
Abstract
New sizing compositions containing: (a) a compound selected from the group consisting of alkenyl succinic anhydrides, alkyl ketene dimers and mixtures thereof and (b) a metal salt selected from the group of metals consisting of zirconium, hafnium, titanium and mixtures thereof are described. The use of the above sizing compositions during paper making provides paper products having superior liquid storage properties, especially liquid foods such as milk, juices, etc.
Claims22
A sizing composition comprising:
- (a) a compound selected from the group consisting of alkenyl succinic anhydrides, alkyl ketene dimers, and mixtures thereof and (b) an amount of a metal salt selected from the group of metals consisting of zirconium, hafnium, titanium, and mixtures thereof effective to cause crosslinking and immobilization on a substrate to be sized.
An aqueous emulsion suitable for sizing cellulosic materials comprising:
- (a) water;
- (b) at least one emulsifier agent selected from the group consisting of anionic, nonionic, and cationic emulsifiers;
- (c) a compound selected from the group consisting of alkenyl succinic anhydrides, alkyl ketene dimers, and mixtures thereof;
- (d) a metal salt selected from the group of metals consisting of zirconium, hafnium, titanium, and mixtures thereof, in an amount effective to cause crosslinking and immobilization on cellulosic material;
- and
- (e) a polymer selected from the group consisting of water soluble hydroxylated polymer, water soluble carboxylated polymer, and mixtures thereof.
A cellulosic article of manufacture having incorporated therein a sizing composition comprising (a) a compound selected from the group consisting of alkenyl succinic anhydrides, alkyl ketene dimers and mixtures thereof and (b) an amount of a metal salt selected from the group of metals consisting of zirconium, hafnium, titanium and mixtures thereof effective to cause crosslinking and immobilization on a sized surface of said article.
Dependencies are inferred from the claim text.