Patent ID: 7985269

Claim:
A lofty open nonwoven abrasive article comprising: a lofty open nonwoven fiber web; abrasive particles; and a polyurethane binder binding the abrasive particles to the nonwoven fiber web, wherein the polyurethane binder comprises: at least one of a cationic surfactant, anionic surfactant, fluorinated nonionic surfactant, or silicone-based nonionic surfactant; and a reaction product of components comprising: a curable urethane prepolymer; an amine curative; and a dipodal aminosilane represented by the formula (RO) 3 Si—Z—(NH—Z′) n —Z—Si(OR) 3 wherein each R independently represents an alkyl or aryl group; each Z independently represents an alkylene group having from 1 to 4 carbon atoms; each Z′ independently represents a covalent bond or an alkylene group having from 1 to 4 carbon atoms, with the proviso that no more than one Z′ represents a covalent bond; and n is 1, 2 or 3.