Method of making a coated abrasive article

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United States of America Patent

PATENT NO 5368618
SERIAL NO

07970950

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Abstract

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A method of preparing a coated abrasive article in which the presence of multiple layers of abrasive grains are minimized. In one variation, the method comprises the steps of: (a) providing a backing; (b) applying a make coat precursor to the backing; (c) partially curing the make coat precursor; (d) applying, preferably by projecting, a plurality of abrasive grains into the partially cured make coat precursor; and (e) completely curing the partially cured make coat precursor. In another variation of this method, a size coat precursor is applied over the abrasive grains and cured make coat, and the size coat precursor is completely cured. In another variation of this method, a size coat precursor is applied over the abrasive grains and the partially cured make coat precursor, and the make coat precursor and the size coat precursor are completely cured. The make coat precursor preferably comprises an unsaturated resin that polymerizes via a free radical polymerization mechanism at the site of .alpha.,.beta.-unsaturation.

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Patent Owner(s)

Patent OwnerAddress
MINNESOTA MINING AND MANUFACTURING COMPANYP O BOX 33427 ST PAUL MN 55133

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Edblom, Elizabeth C Hennepin, MN 6 354
Masmar, Craig A Washington, MN 9 319
Spencer, Douglas S Ramsey, MN 4 202

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