Patent ID: 8043476

Claim:
A paper or paper board product comprising a paper (uncoated basis weight: 35-178 gsm) or paperboard (uncoated basis weight: 195-586 gsm) that bears a dried aqueous coating composition comprising: (a) pigment particles; (b) particles of acrylic or vinyl polymer containing phosphate or phosphonate groups; and (c) a compound of formula (I) or (II): R 1 , R 3 , R 6 , R 8 are independently hydrogen or alkyl groups, R 2 , R 4 , R 5 , R 7 , R 9 & R 10 are independently hydrogen, alkyl groups or ammonium or metal counter ions, or wherein R5 is a residue of a phosphoethyldimethacrylate that is in turn optionally polymerized with other ethylenically unsaturated monomers or dimers; wherein each of the sums (m+n) and (q+r) is an integer from 10 to 600, and p is an integer from 1-10; and wherein each of the ratios m:n and q:r is from 0:100 to 95:5.