Coating process and abrasive articles made therewith
Assignee3M Innovative Properties Company
InventorPei-Jung Chen
Life of this patent
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Abstract
A process for coating a surface which comprises applying a composition comprising an amine aldehyde resin, a reactant bearing carboxylic acid groups or derivatives thereof and a Lewis acid, followed by thermal curing. The process is of value, for example, in the manufacture of abrasive products, where the composition serves as a make composition or size composition, or both, to hold abrasive particles on the surface of a backing.
Claims55
A process for coating a surface which comprises applying a composition comprising an amine-aldehyde resin, a reactant bearing carboxylic acid groups or derivatives thereof, and a Lewis acid onto the surface, and curing the composition.
A coated abrasive having a binder and abrasive particles attached to a backing, wherein at least one layer of the binder comprises a cured binder derived from a coatable binder precursor composition comprising an amine-aldehyde resin, a reactant bearing carboxylic acid groups or derivatives thereof and a Lewis acid.
A process for making a coated abrasive article comprising:
- (a) applying a first layer comprising a first curable composition onto a surface of a backing;
- (b) at least partially embedding abrasive grains into the first layer;
- (c) at least partially curing the first curable composition;
- (d) applying a second layer comprising a second curable composition over the at least partially cured first curable composition and abrasive grains;
- and
- (e) curing the second curable composition
- wherein at least one of the first or second curable compositions is a binder precursor composition comprising an amine-aldehyde resin, a reactant bearing carboxylic acid groups or derivatives thereof, and a Lewis acid.
Dependencies are inferred from the claim text.