US 7,455,751 B2
	Use of alkenyl succinic anhydride compounds derived from symmetrical olefins in internal sizing for paper production
William J. Ward, Glen Ellyn, Ill. (US); Krzysztof Andruszkiewicz, Gdynia (Poland); Ross T. Gray, Plainfield, Ill. (US); Timothy Patrick McGinnis, Wheaton, Ill. (US); and Robert W. Novak, Lisle, Ill. (US)
Assigned to Nalco Company, Naperville, Ill. (US)
Filed on Apr. 15, 2005, as Appl. No. 11/107,045.
Prior Publication US 2006/0231223 A1, Oct. 19, 2006
Int. Cl. D21H 21/16 (2006.01); D21H 23/22 (2006.01); D21H 23/24 (2006.01); C07D 307/60 (2006.01)

U.S. Cl. 162—158  [162/184; 162/185; 549/233; 549/255]

12 Claims

1. A method of preparing paper having improved resistance to penetration by liquids comprising incorporating in the paper a size composition comprising an alkenyl succinic anhydride compound prepared from the reaction of maleic anhydride with 11-docosene.