Binder for abrasive articles, abrasive articles including...

Details Binder for abrasive articles, abrasive articles including... Binder for abrasive articles, abrasive articles including...

C - Chemistry, Metallurgy

08

G

C08G 12/12 (2006.01) B24D 3/28 (2006.01) B24D 11/00 (2006.01)

Patent

CA 2459132

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.

La présente invention se rapporte à un liant pour produits abrasifs, à des articles abrasifs enduits ainsi qu'à un procédé de fabrication dudit liant consistant à réticuler un précurseur de résine d'urée-formaldéhyde en présence d'un unique catalyseur qui est principalement constitué d'au moins un sel d'un acide avec une diamine de formule H¿2?N-R-NH¿2?, où R est un groupe alkylène comportant 3 à 10 atomes de carbone, et l'acide est sélectionné dans le groupe constitué par les acides hydrochlorique, citrique, nitrique, sulfurique, acétique, phosphorique ainsi que de combinaisons de ces acides.

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