Patent ID: 6852815

Claim:
A hydrophobically-modified cationic tetrapolymer consisting essentially of the following monomers in wt. %; where: P is O or NR 2 ; R 1 , R 2 , R 3 , R 4 are independently H or C 1 -C 5 alkyl; R 5 is C 2 -C 16 alkylene; and where: P is O or NR 2 ; R 1 , R 2 , R 3 , R 4 are independently H or C 1 -C 5 alkyl; R 5 is a C 2 -C 16 alkylene; R 6 is C 8 -C 24 alkyl; and M is a halide, tosylate or phosphate anion.