Vitrified bonded abrasive bodies prepared from sol gel sintered aluminous grit particles and a vitreous (glass) bond exhibit improved abrasive performance by treating the surfaces of the grit particles so as to give them silica-enriched surfaces.
A device and process is disclosed for producing filamentary abrasive particles having substantially equal aspect ratios without further length reduction.
Vitrified bonded abrasive bodies prepared from sol-gel sintered aluminous grit particles, a vitreous bond, bubbled alumina, and a sacrificial organic material exhibit improved abrasive performance, especially for creepfeed grinding products.
Vitrified bonded abrasive bodies prepared from sol-gel sintered aluminous grit particles and a vitreous (glass) bond exhibit improved abrasive performance by coating the surfaces of the grit particles with a metal oxide, preferably by means of an organofunctional metal-containing surfactant having a ...
Filamentary abrasive particles formed from a sol-gel alumina modified by rare earth metal oxides have excellent abrasive qualities.
Resinoid and vitrified bonded abrasive products containing filament shaped sintered alumina based abrasive made up predominantly of fine alpha alumina crystals.
An improved wet strength resin prepared from a polyamine and an epihalohydrin is obtained with improved yield if the polyamine is formed by the polymerization of a quaternary amine in the presence of an anion derived from an acid in which the final pKa is less than 2.
A filament shaped sintered alumina based abrasive made up predominantly of fine alpha alumina crystals.
Sol-gel alumina that is dried but unfired can be explosively comminuted by feeding the dried gel into a furnace held at temperatures above those at which vaporizable materials are eliminated from the particles of gel. At suitably elevated temperatures the firing is sufficient to form fully densified ...
Cellulosic substrates containing a cationic resinous composition comprising reaction products of (A) adducts of certain dihaloalkanes and alkylene diamine and (B) certain epihalohydrins to increase wet strength.