Inventors:
Martha Hollomon - Newark DE, US
Brian L. Walchuk - Hockessin DE, US
Frank J. Sutman - Jacksonville FL, US
Assignee:
Hercules Incorporated - Wilmington DE
International Classification:
C08F 2/32
C08F 220/56
C08F 222/00
C08F 220/06
C08F 293/00
Abstract:
A papermaking method and a composition which utilize, as a drainage aid, a water-soluble cationic or amphoteric copolymer prepared via a water-in-oil polymerization technique that, absent a cross-linking agent, is characterized by a Huggins' constant (k′) determined in 0. 01M NaCl greater than 0. 3 and a storage modulus (G′) at 6. 3 Hz greater than 50 Pa.