Coated abrasive article with composite tie layer, and method...

Details Coated abrasive article with composite tie layer, and method... Coated abrasive article with composite tie layer, and method...

B - Operations, Transporting

24

D

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

Patent

CA 2570302

Coated abrasive articles have a composite tie layer. The composite tie layer is preparable by disposing a first polymerizable composition comprising a polyfunctional aziridine on a backing, and disposing a second polymerizable composition comprising at least one acidic free-radically polymerizable monomer and at least one oligomer having at least two pendant free-radically polymerizable groups on the first polymerizable composition, at least partially polymerizing the first and second polymerizable compositions, wherein homopolymerization of the oligomer results in a polymer having a glass transition temperature of less than 50 degrees Celsius.

Les articles abrasifs enrobés ont une couche de liaison composite. Cette couche se prépare en disposant une première composition polymérisable comprenant de l~aziridine polyfonctionnelle sur un support, puis une seconde composition polymérisable comprenant au moins un monomère polymérisable aux radicaux libres acides et au moins un oligomère ayant deux groupes polymérisables aux radicaux libres pendants sur la première composition polymérisable, et polymérisant au moins partiellement les premières et secondes compositions polymérisables, où l~homopolymérisation de l~oligomère aboutit à un polymère ayant une température de transition vitreuse inférieure à 50 degrés Celsius.

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