Binder for abrasive articles, abrasive articles including the same and method of making same
Assignee3M Innovative Properties Company
InventorsChristopher J. Carter, Richard J. Darwood, Roy Stubbs
Life of this patent
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Abstract
A binder for abrasive products, coated abrasive articles and a method of making the same comprising a urea formaldehyde resin precursor cured in the presence of a sole catalyst which consists essentially of at least one salt of an acid with a diamine of the formula H2N—R—NH2 wherein R is an alkylene group of 3 to 10 carbon atoms, and the acid is selected from the group consisting of hydrochloric, citric, nitric, sulphuric, acetic, phosphoric and combinations thereof
Claims52
A coated abrasive article comprising a backing having at least one major surface, a plurality of abrasive grains bonded to at least a portion of the one major surface of the backing by at least one binder, wherein the binder comprises a urea formaldehyde resin precursor cured in the presence of a sole catalyst which consists essentially of at least one salt of an acid with a diamine of the formula:
- H2N—R—NH2
- in which R is an alkylene group of 3 to 10 carbon atoms, wherein the acid is selected from the group consisting of hydrochloric, citric, nitric, sulphuric, acetic, phosphoric and combinations thereof.
A method of making a coated abrasive article which comprises coating a major surface of a backing with a plurality of abrasive grains and a binder comprising a urea formaldehyde resin precursor solution and a solution of a sole catalyst which consists essentially of at least one salt of an acid with a diamine of the formula:
- H2N—R—NH2
- in which R is an alkylene group of 3 to 10 carbon atoms, wherein the acid is selected from the group consisting of hydrochloric, citric, nitric, sulphuric, acetic, phosphoric and combinations thereof, and curing the urea formaldehyde resin precursor.
A binder suited for use in abrasive products comprising urea formaldehyde resin precursor cured in the presence of a sole catalyst which consists essentially of at least one salt of an acid with a diamine of the formula:
- H2N—R—NH2
- in which R is an alkylene group of 3 to 10 carbon atoms, wherein the acid is selected from the group consisting of hydrochloric, citric, nitric, sulphuric, acetic, phosphoric and combinations thereof.
A method of making a binder comprising mixing components comprising an aqueous solution of a urea-formaldehyde resin precursor;
- and a sufficient quantity of an aqueous solution of a sole catalyst to initiate cross-linking of said urea-formaldehyde resin precursor of a catalyst consisting essentially of at least one salt of an acid with a diamine of the formula:
- H2N—R—NH2
- in which R is an alkylene group of 3 to 10 carbon atoms, wherein the acid is selected from the group consisting of hydrochloric, citric, nitric, sulphuric, acetic, phosphoric and combinations thereof, to provide a mixture;
- and heating said mixture to provide said binder.
Dependencies are inferred from the claim text.