Melamine methylol for abrasive products

Details Melamine methylol for abrasive products Melamine methylol for abrasive products

C - Chemistry, Metallurgy

08

K

C08K 3/00 (2006.01)

Patent

CA 2699943

An abrasive product includes a plurality of abrasive particles and a resin binder cured from a resin composition that includes an aqueous dispersion of melamine methylol having a melamine-to- formaldehyde molar equivalent ratio of between about 1:1 and about 1:3.2, wherein the aqueous dispersion has a pH in a range of between about 8 and about 10. The composition also includes a formaldehyde-based resins, such as a urea-formaldehyde resin or phenol-formaldehyde resin. The melamine methylol comprises between about 1 wt% and about 50 wt% of the combined weight of the formaldehyde-based resin and the melamine methylol.

L'invention concerne un produit abrasif qui comprend une pluralité de particules abrasives et un liant de résine durci provenant d'une composition de résine qui comprend une dispersion aqueuse de méthylol de mélamine ayant un rapport équivalent molaire mélamine sur formaldéhyde compris entre environ 1/1 et environ 1/3,2, la dispersion aqueuse présentant un pH dans une plage comprise entre environ 8 et environ 10. La composition comprend également des résines à base de formaldéhyde, comme une résine d'urée-formaldéhyde ou une résine de phénol-formaldéhyde. Le méthylol de mélamine comprend entre environ 1 % en poids et environ 50 % en poids du poids combiné de la résine à base de formaldéhyde et du méthylol de mélamine.

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