Treated backing and coated abrasive article including the same

A coated abrasive article comprising:

• a backing comprising polyester and having a first major surface and a second major surface and a thickness of at least 0.02 mm and less than 5 mm;
• a tie layer directly bound to at least a portion of the first major surface, wherein the tie layer comprises an at least partially cured blend of, on a solids basis;
• from 50 to 99 parts by weight of at least one styrene-butadiene copolymer latex, wherein the sytrene-butadiene copolymer comprises a carboxylate sytrene-butadiene copolymer;
• and
• from 1 to 50 parts by weight of at a first resin, the first resin comprising a Novolac resorcinol-formaldehyde resin, and
• wherein the tie layer is acidic;
• and
• an abrasive layer directly bound to at least a portion of the tie layer, the abrasive layer comprising abrasive particles and a second resin in contact with the tie layer, wherein the second resin comprises a different composition from the first resin, and wherein the second resin comprises a cationically cured resin.