An abrasive article may include an organic bond material, abrasive particles contained within the organic bond material and a plasticizer contained within the organic bond material. The plasticizer may include at least one of an aromatic phenyl group, a heteroaromatic furyl group, or a saturated aliphatic hydrocarbon. The plasticizer may further include a polar group.

A phenolic resin composition is described comprising at least 50 wt.-% of phenolic resin; first polymerized units comprising a cationic group; and second polymerized units comprising an anionic group. The cationic groups are ionically bonded to the anionic groups. The ionic bonding of the cationic group and anionic group of the polymerized units can provide certain complex viscosity and/or tan delta properties. In some embodiments, the phenolic resin composition has a complex viscosity at 65 C of at least 50 Pascal(seconds) and/or has a tan delta at 65 C ranging from 0.5 to 2.5. Abrasive articles and methods of making an abrasive article are also described.

A fixed abrasive article having a body including abrasive particles contained within a bond material, the abrasive particles including shaped abrasive particles or elongated abrasive particles having an aspect ratio of length:width of at least 1.1:1, each of the shaped abrasive particles or elongated abrasive particles having a predetermined position or a predetermined three-axis orientation, including a placement angle ranging from +90 degrees to 90 degrees and a rake angle ranging from +90 degrees to 90 degrees.

An aqueous binder system including a mixture of urea-formaldehyde resin and water-dispersible polyester resin. A combination of the binder system applied to fiber insulation, a composite glass mat, glass/polyester mat, polyester mat, or substrate of a coated abrasive product. Fiber insulation, a composite glass mat, glass/polyester mat, polyester mat, or coated abrasive product with the binder system including urea-formaldehyde resin and water-dispersible polyester.