Norton Company

Bernard T Loughlin

Robert G Kelly

William F McCutcheon

Burton Farbstein

Christopher Gruel

A coated abrasive comprising maker and size coats with improved color stability is obtained by the use of a bisphenol/formaldehyde resin binder in either the maker or, more preferably, the size coat.

Color stable coated abrasives

Substantial cost saving can be realized in a coated abrasive structure employing a plurality of layers of particulate material, if at least one of the under-layers of particles is provided by a layer of ground glass.

Low cost coated abrasives

Coated abrasive material having blends of abrasive grains of sol gel process alumina and alumina-zirconia in a volume ratio of at least 15% sol gel abrasive grain provide improved performance in certain grinding applications and a more universal coated abrasive product for a wider range of grinding applications than such products of either abrasive grain alone.

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Averill Park, NY, United States of America

Bernard T Loughlin