Abstract: Coatable mixtures including erodable filler agglomerates, and abrasive articles into which they may be incorporated are presented, the agglomerates comprising a plurality of individual grains of water insoluble filler agglomerated by an agglomerating agent which includes water soluble filler and a binder. A preferred water soluble filler is Al.sub.2 (SO.sub.4).sub.3.14-18H.sub.2 O, a preferred water insoluble filler is Na.sub.3 AlF.sub.6 (cryolite), while a preferred binder is a phenolic resin. Methods of making coatable mixtures including erodable filler agglomerates are also presented.

Abstract: Splices of endless abrasive belts and cones can be formed without emission of organic volatiles by employing as the splicing adhesive an aqueous adhesive dispersion that is a blend of a polyurethane and a polyisocyanate crosslinking agent.

Abstract: Intumescent vermiculite flakes useful in mountings of catalytic converters are prepared by partially dehydrating vermiculite ore to afford a uniform content of chemically bound water from about 1.0 to 3.2% by weight and a uniform bulk density from about 0.2 to 0.9 g/cm.sup.3. Such a mounting affords good support to the monolith at warm-up temperatures, exerts adequate holding forces at operating temperatures without danger of cracking the monolith, and does not incur gradual reduction in holding forces at operating temperatures. The mounting layer can be applied as either a mat or a paste.

Abstract: An abrasive article comprising a coated abrasive bonded to a substrate by means of a metallic adhesive and a method for producing the abrasive article by heating.

Abstract: Bonded abrasive articles and methods of making and using same are presented, the bonded abrasive articles comprising abrasive particles dispersed throughout and adhered within an elastomeric polyurethane binder, at least a portion of the abrasive particles adhered to the polyurethane binder by a silane coupling agent. The silane coupling agent is preferably coated onto the abrasive particles before they are mixed with the uncured polyurethane resin. The articles of the invention exhibit excellent smear- and wear-resistance and provide improved abrasion efficiency.

Abstract: A catalytic converter has a metallic monolith that is mounted in a canister by a heat-insulating mat of melt-formed refractory ceramic fibers that have been annealed to provide a Resiliency Value of at least 10 kPa. A mat having such Resiliency Value does not take a compression set that would allow the monolith to become loose. The ceramic fibers preferably are melt-formed from a mixture of about equal parts by weight of Al.sub.2 O.sub.3 and SiO.sub.2. After being annealed, the ceramic fibers can have a fine-grained crystalline structure, but significant energy savings can be realized by reducing the annealing temperatures and times such that the fibers have an amorphous structure while still attaining excellent Resiliency Values.

Abstract: Surface-finishing articles comprising a lofty, nonwoven, three-dimensional web of polyester fibers coated with a phenol-formaldehyde resin binder.

Abstract: An abrasive article is provided, the article including a substrate having an abrasive surface thereon including particles of an abrasive material secured by a binding medium wherein at least a portion of the abrasive surface has thereon a coating including a crosslinked siloxane. Methods of making and using such an articles are also presented.

Abstract: An improved high-intensity roto-peen flap, constructed of coated fabric material, the coating including a plurality of layers at least one of which comprises a linear polyurethane elastomer, exhibits improved life over previous high-intensity roto peen flaps. A method of making such a flap, a wheel incorporating at least one of the flaps, and a method of high-intensity roto-peening using the wheel are also presented.

Abstract: A disc holder assembly having a disc holder and a surface finishing disc member. The disc holder has a lower circular surface which includes a coaxial concave portion having a projection extending downwards from its center, a planar portion extending outward from the outer edge of the concave portion, and a sheet fastening member fixed to the planar annular surface. The projection includes a shaft portion and a distal head portion of larger diameter than the shaft portion. The surface finishing disc includes a surface finishing layer (e.g., coated abrasive sheet) on its lower surface, a sheet fastening member on its opposite surface and a central opening of the same diameter of the shaft portion of the projection. The opening of the disc member is forced over the head portion of the projection so that the sheet fastening members are secured as they contact to firmly hold the disc member within the disc holder.

Abstract: A soft elastomeric disc for removing polymeric compositions from an underlying substrate. The disc is useful for removing decorative decals, stripes, graphics, emblems, protective moldings, paint and adhesive.

Abstract: An improved high-intensity rotary peening particle support of the type having a plurality of peening particles metallurgically secured to an exposed face thereof is presented, the support having a base composition consisting essentially of from about 0.08 to about 0.34 weight percent carbon, the balance iron, and a Ni-enriched layer which provides a hard, wear resistant surface. A method of producing such a support is also described, the method including cold forming a peening particle support base composition as described, stress relieving, brazing peening particles to an exposed face of the support, austenitizing, quenching, and tempering the support to form a support having a Ni-enriched layer which is harder than the base composition.

Abstract: A coatable, thermally curable binder precursor solution, the solution including a 30-95% solids solution of a thermally curable resin and a reactive diluent. The reactive diluent may be selected form urea derivatives, alkylsubstituted 2-aminoalcohols, .beta.-ketoalkylamides, nitro alkanes, and poly(oxyalkylene) compounds, and has at least one functional group independently reactive with methylol groups of the resin and with aldehydes. The thermally curable resin may include up to 50% (wt of total resin) of an ethylenically unsaturated monomer. Method of making abrasive articles are also presented.

Abstract: Water-based, intumescent, fire retardant material is made from, on a dry basis by weight, 100 parts of a latex such as polychloroprene latex and from 50 to 200 parts of water-insoluble intumescent mineral granules such as hydrated alkali metal silicate granules incorporating an oxy boron compound. This water-based intumescent material dries to an elastomeric state that has a Volume Expansion Factor (as defined) of at least two. It chars into a substantially rigid refractory thermal insulator to prevent fire from penetrating through voids into which the novel intumescent material has expanded.

Abstract: An abrasive element comprising a substrate having on a surface thereof particles of an abrasive material secured by an organic binding medium wherein at least the surface of the element between the particles of abrasive material contains a fluorochemical selected from the group consisting of compounds comprising a fluorinated aliphatic group attached to a polar group or moiety and compounds having a molecular weight of at least 750 and comprising a non-fluorinated polymeric backbone having a plurality of pendant fluorinated aliphatic groups, said aliphatic groups comprising the higher of(a) a minimum of three C--F bonds, or(b) in which 25% of the C--H bonds have been replaced by C--F bonds such that the compound comprises at least 15% by weight of fluorine.The compound may be applied as a layer coated over the existing layers of an abrasive element or it may be incorporated into at least the coating formulation which will form the outermost layer of the binding medium.

Abstract: A monolith can be mounted in a catalytic converter by a material containing intumescent vermiculite flakes that have a uniform content of chemically bound water from about 1.0 to 3.2% by weight and a uniform bulk density from about 0.2 to 0.9 g/cm.sup.3. Such a mounting affords good support to the monolith at warm-up temperatures, exerts adequate holding forces at operating temperatures without danger of cracking the monolith, and does not incur gradual reduction in holding forces at operating temperatures.

Abstract: An abrasive article comprising a coated abrasive bonded to a substrate by means of a metallic adhesive and a method for producing the abrasive article by heating.