Coated abrasive having radiation curable binder
AssigneeMinnesota Mining and Manufacturing Company
InventorsMichael L. Tumey, Donna W. Bange, Aida F. Robbins
Life of this patent
Estimating the term…
Abstract
Coated abrasive product and a process for producing same. The coated abrasive product comprises a backing, a make coat, and a size coat, and may contain an optional saturant coat, an optional presize coat, an optional backsize coat, or any combination of said optional coats, in which at least one coat is formed from a composition curable by electromagnetic radiation comprising: (A) a curable portion containing both ethylenically unsaturated groups and 1,2-epoxide groups, which groups can be in the same compound or in different compounds, and (B) a photoinitiator portion. The photoinitiator portion activates both free-radical and cationic curing mechanisms.
Claims17
A coated abrasive product comprising a backing, a make coat, a layer of abrasive grains, and a size coat, wherein at least one of the make coat and size coat is formed from a composition curable by electromagnetic radiation comprising ethylenically-unsaturated groups and 1,2-epoxide groups, and a photoinitiator portion, in an amount sufficient to cure the composition, comprising at least one polymerization photoinitiator selected from the group consisting of
- (1) salts having an onium cation and a halogen-containing anion of a metal or metalloid, and
- (2) a mixture of (a) at least one salt having an organometallic complex cation and a halogen-containing complex anion of a metal or metalloid, and (b) at least one free-radical polymerization initiator.
A coated abrasive product comprising a backing, a make coat, a layer of abrasive grains, and a size coat, wherein at least one of the make coat and size coat is formed from a composition curable by electromagnetic radiation comprising
- (1) a curable portion selected from the group consisting of:
- (A) at least one bireactive compound containing at least one ethylenically-unsaturated group and at least one 1,2-epoxide group,
- (B) at least one ethylenically-unsaturated compound and at least one compound containing at least one 1,2-epoxide group,
- (C) at least one bireactive compound containing at least one ethylenically-unsaturated group and at least one 1,2-epoxide group, and at least one ethylenically-unsaturated compound,
- (D) at least one bireactive compound containing at least one ethylenically-unsaturated group and at least 1,2-epoxide group, and at least one compound containing at least one 1,2-epoxide group, and
- (E) at least one bireactive compound containing at least one ethylenically-unsaturated group and at least one 1,2-epoxide group, at least one ethylenically-unsaturated compound, and at least one compound containing at least one 1,2-epoxide group, and
- (2) a photoinitiator portion, in an amount suffiicient to cure the composition, comprising at least one polymerization photoinitiator selected from the group consisting of:
- (A) salts having an onium cation and a halogen-containing complex anion of a metal or metalliod, and
- (B) a mixture of (a) at least one salt having an organometallic complex cation and a halogen-containing complex anion of a metal or metalloid and (b) at least one free-radical polymerization initiator.
A coated abrasive product comprising a backing, a make coat, a layer of abrasive grains, and a size coat, wherein said backing has at least one of a saturant coat, a presize coat, or a backsize coat, wherein at least one of said saturant coat, said presize coat, or said backsize coat is formed from a composition curable by electromagnetic radiation comprising ethylenically-unsaturated groups and 1,2-epoxide groups, and a photoinitiator portion, in an amount sufficient to cure the composition, comprising at least one polymerization photoinitiator selected from the group consisting of
- (1) salts having an onium cation and a halogen-containing anion of a metal or metalloid, and
- (2) a mixture of (a) at least one salt having an organometallic complex cation and a halogen-containing complex anion of a metal or metalloid, and (b) at least one free-radical polymerization initiator.
A coated abrasive product comprising a backing, a make coat, a layer of abrasive grains, and a size coat, wherein said backing has at least one of a saturant coat, a presize coat, or a backsize coat, wherein at least one of said saturant coat, said presize coat, or said backsize coat is formed from a composition curable by electromagnetic radiation comprising
- (1) a curable portion selected from the group consisting of:
- (A) at least one bireactive compound containing at least one ethylenically-unsaturated group and at least one 1,2-epoxide group,
- (B) at least one ethylenically-unsaturated compound and at least one compound containing at least one 1,2-epoxide group,
- (C) at least one bireactive compound containing at least one ethylenically-unsaturated group and at least one 1,2-epoxide group, and at least one ethylenically-unsaturated compound,
- (D) at least one bireactive compound containing at least one ethylenically-unsaturated group and at least one 1,2-epoxide group, and at least one compound containing at least one b 1,2-epoxide group, and
- (E) at least one bireactive compound containing at least one ethylenically-unsaturated group and at least one 1,2-epoxide group, at least one ethylenically-unsaturated compound, and at least one compound containing at least one 1,2-epoxide group, and
- (2) a photoinitiator portion, in an amount sufficient to cure the composition, comprising at least one polymerization photoinitator selected from the group consisting of:
- (A) salts having an onium cation and halogen-containing complex anion of a metal or metalloid, and
- (B) a mixture of (a) at least one salt having an organometallic complex cation and a halogen-containing complex anion of a metal or metalloid and (b) at least one free-radical polymerization initiator.
A coated abrasive product comprising abrasive granules which are supported on and adherently bonded to at least one major surface of a backing by a resinous binder material, said resinous binder material formed from a composition curable by electromagnetic radiation comprising ethylenically-unsaturated groups and 1,2-epoxide groups, and a photoinitiator portion, in an amount sufficient to cure the composition, comprising at least one polymerization photoinitiator selected from the group consisting of
- (1) salts having an onium cation and a halogen-containing anion of a metal or metalloid, and
- (2) a mixture of (a) at least one salt having an organometallic complex cation and a halogen-containing complex anion of a metal or metalloid, and (b) at least one free-radical polymerization initiator.
Dependencies are inferred from the claim text.