Abrasive tool making process – material – or composition – Laminating
Reexamination Certificate
2008-01-23
2011-11-29
Lorengo, Jerry A (Department: 1731)
Abrasive tool making process, material, or composition
Laminating
C051S293000, C051S298000
Reexamination Certificate
active
08066786
ABSTRACT:
A coated abrasive disc has a backing comprising a synthetic woven fabric having a first major surface with a presize disposed thereon and a second major surface opposite the first major surface and having a backsize disposed thereon. The presize comprises a reaction product of a curable presize precursor comprising: at least one epoxy resin prepared by reaction of epichlorohydrin with at least one of bisphenol A or bisphenol F, polyfunctional (meth)acrylate, novolac resin, imidazole epoxy cure catalyst, dicyandiamide, and a photoinitiator. A glass woven fabric permeated with an at least partially crosslinked saturant is secured to the second major surface by a thermoplastic laminating adhesive disposed between the second major surface of the synthetic woven fabric and the glass woven fabric. A method of making the same is also disclosed.
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Keipert Steven J.
Manalo Jaime M.
3M Innovative Properties Company
Bradford B. Wright
Lorengo Jerry A
Wood Jared
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