Abrasive articles including a polymeric additive

Details Abrasive articles including a polymeric additive Abrasive articles including a polymeric additive

B - Operations, Transporting

24

D

B24D 3/28 (2006.01) B24D 3/34 (2006.01) B24D 11/00 (2006.01)

Patent

CA 2301553

An abrasive article is provided that includes at least one binder system formed from a polymeric additive and a thermosetting resin. The polymeric additive includes a polymeric backbone having substituents attached thereto, wherein the substituents include at least one urethane linked nitrogen bonded side chain having about 5 carbon atoms or more and a terminal methyl group and at least one oxygen linked water solubilizing group. An abrasive article that includes the binder system exhibits an increase of workpiece surface abraded in a Woodsanding Normal Force Test as compared to an abrasive article including a binder system formed from a composition containing substantially no polymeric additive.

L'invention porte sur un article abrasif comportant au moins un système de liants consistant en un additif de polymère et une résine thermodurcissable. L'additif de polymère présente un squelette de polymère auquel sont attachés des substituants consistant eux-mêmes en une chaîne latérale à liaison azote et couplage uréthane à environ 5 atomes de carbone ou plus, en un groupe terminal méthyle et en au moins et un agent solubilisant dans l'eau à couplage oxygène. L'invention porte également sur un article abrasif comportant le système de liants et dont les performances d'abrasion de la surface d'une pièce selon le test WNF dépassent celles d'un article formé à l'aide d'une composition sensiblement exempte d'additif de polymère.

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