초록 ▼

The disclosure is directed to a radiation curable composition including abrasive grains and a binder composition. The binder composition includes about 10 wt % to about 90 wt % cationically polymerizable compound, not greater than about 40 wt % radically polymerizable compound, and about 5 wt % to a

The disclosure is directed to a radiation curable composition including abrasive grains and a binder composition. The binder composition includes about 10 wt % to about 90 wt % cationically polymerizable compound, not greater than about 40 wt % radically polymerizable compound, and about 5 wt % to about 80 wt % particulate filler based on the weight of the binder composition. The particulate filler includes dispersed submicron particulates.

대표청구항 ▼

1. A coated abrasive article comprising: abrasive grains anda colloidal composite binder composition comprising, based on the weight of the colloidal composite binder composition, about 5 wt % to about 80 wt % of a dispersion of colloidal silica suspended in an external phase of a cationically curab

1. A coated abrasive article comprising: abrasive grains anda colloidal composite binder composition comprising, based on the weight of the colloidal composite binder composition, about 5 wt % to about 80 wt % of a dispersion of colloidal silica suspended in an external phase of a cationically curable polymer resin, wherein the colloidal silica has an average particle size of 3 nm to 100 nm;not greater than about 60 wt % of an additional cationically polymerizable compound, wherein the cationically polymerizable compound is the same or different than the cationically curable polymer resin in which the colloidal silica is suspended;not greater than about 40 wt % of radically polymerizable compound; andabout 1.0 wt % to not greater than about 15 wt % of a polyol. 2. The coated abrasive article of claim 1, wherein the colloidal silica has a particle size distribution having a half-width not more than about twice the average particle size of the colloidal silica. 3. The coated abrasive article of claim 1, wherein the colloidal silica comprises a polycondensate silicate. 4. The abrasive article of claim 1, wherein when fully cured has a tensile strength of at least 20 Mpa, a Young's modulus of at least about 500 MPa, and an elongation at break value of at least about 1.0%. 5. The coated abrasive article of claim 4, wherein the colloidal composite binder has an Rz Performance not greater than about 3.0. 6. The abrasive article of claim 1, wherein the amount of polyol is about 8 wt % to 14 wt %. 7. The abrasive article of claim 1, wherein the polyol is selected from the group consisting of a monoalkyl ether of alkyleneglycol, alkylene and arylalkylene; a polytetramethylene glycol; an alicyclic polyol; and combinations thereof. 8. The abrasive article of claim 7, wherein the polyol is selected from the group consisting of 2-ethyl-1,3-hexanediol; 1,5-pentanediol; a polytetramethylene ether glycol having a molecular weight from 200 to 1100; and 4,8-bis(hydroxymethyl)tricyclo(5.2.1.0)decane. 9. The abrasive article of claim 1, wherein the total amount of colloidal silicon dioxide is in a range of 10 wt % to 40 wt % of the colloidal composite binder composition. 10. The abrasive article of claim 1, wherein the colloidal composite binder comprises: about 20 wt % to about 80 wt % of a dispersion of colloidal silica suspended in an external phase of a cationically curable polymer resin;about 10 wt % to about 60 wt % of an additional cationically polymerizable compound, wherein the cationically polymerizable compound is the same or different than the cationically curable polymer resin in which the colloidal silica is suspended;about 1.0 wt % to about 20 wt % radically polymerizable compound; andabout 1.0 wt % to about 15 wt % of a polyol.