WITH SYNTHETIC RESIN

The disclosure illustrates a grinding wheel that is reinforced by a length of wire positioned on the side faces of the wheel in a spiral pattern beginning adjacent the inner diameter with successive turns progressively radially outward alongside the wheel. The wire is bonded to the wheel by an epoxy...     

A grinding wheel is made by locating a grindstone element in a molding tool and injection-molding a supporting part so that a portion of the grindstone element is embedded in the supporting part and securely bonded thereto by the molding operation. Recesses in the embedded portion of the grindstone element...     

Coated abrasive material is provided having coated on the adhesive bond a supersize layer which improves grinding and which is stabilized against thermal degradation during use of the abrasive material. This layer comprises an elastomeric material and a sufficient amount of antioxidant to limit oxidative...     

An abrasive article such as a cup-shaped grinding wheel is provided, said grinding wheel having a cup-shaped support member of a cross-section providing an annular support surface to which is secured an annular abrasive member consisting of an annular polyimide resin-bonded diamond abrasive member and...     

A low-density abrasive article, especially suited for scouring steel griddle surfaces without causing undesirable surface roughness thereto, comprises a lofty, open, fibrous web of curved continuous glass filament bundles which is impregnated with a hard thermoset resin containing abrasive particles.

An abrasive article comprising abrasive grains, bonding agents and at least partially active fillers, whereby the active filler material is located in or on the abrasive grains.

An improved abrasive grinding wheel such as a cutoff or snagging wheel, including a reinforcing fabric of aramid fibers.

A solid, slate-like product, a composition and method of producing the same comprising a substantially uniform mixture of at least five parts by weight of a finely divided taconite iron ore material containing at least about 1 percent magnetite therein and an amine-formaldehyde resin such as urea-formaldehyde...     

Toothpaste formulations having dispersed therein a plurality of agglomerated particles of dental polishing agent that are visible, palpable and substantially insoluble in the toothpaste are disclosed. The agglomerates comprise individually impalpable particles of water insoluble dental polishing agent;...     

A pH measuring instrument includes a specimen probe having parallel front and rear panels with a planar electrode mounted on each and electrically coupled to a meter movement. Each electrode includes a broad flat electrolytically active surface. The probe is so dimensioned that the active electrode surfaces...     

A splice of abutted ends of sheet material and method of making the same employs a splicing tape formed of an adhesively coated support film which comprises a biaxially oriented, heat-set, coextruded laminate formed from a layer of a crystalline polyester material and a layer of less crystalline polyester...     

A dentifrice abrasive coated with a cationic water-soluble polymer which abrasive is thereby made less adsorptive to therapeutic cationic agents, and therapeutic compositions containing said abrasive.

The invention provides elongate synthetic RD diamond particles, each particle having a long axis and a short transverse axis, the ratio of the long axis to the short axis being at least 3 to 1. Each particle generally has a rib bed structure down its long axis, the ribs of the structure being traces...     

A cleaning tape used for cleaning the surface of a magnetic recording head of a tape recorder or the like consists of a substrate and a cleaning layer. The cleaning layer contains two kinds of particles. One kind of particles has a small diameter and a high hardness, and the other has a large diameter...     

A frictional material for brakes employs as a reinforcing material a fibrous material other than asbestos and contains non-fibrous serpentine in the amount of 5 to 80% in contents by volume. The non-fibrous serpentine has the same chemical composition as asbestos but a different crystaline structure....     

A non-cellular polyurethane polishing and finishing wheel is disclosed having a molded annular matrix reinforced at the inner circumference by a circumferential reinforcing means. The radially outer portion of the matrix is free to deform during use and is formed of a flexible elastomeric polyurethane...     

One-part hydrophilic treatment compositions are provided which comprise (i) an aqueous solution of a sulfonato-organosilanol compound which has at least one sulfonato-organic substituent therein, and (ii) an abrasive material. These compositions are particularly useful in imparting hydrophilicity to...     

A process for grinding coal or ores containing metal values comprising carrying out said grinding in a liquid medium and with a grinding aid system comprising an anionic polyelectrolyte derived from polyacrylic acid and certain inorganic metal salts, said system being dispersible in the liquid medium...     

A process for making cloth backing for coated abrasive articles is disclosed wherein a backing material is coated on its front side, with a liquid thermosetting resin, in such a manner that the resin does not permeate the interstices of the cloth. As a result, the cloth retains most of its original pliability...     

Cutting filaments having a long service life consist of a monofilament of a synthetic polymer into which from 0.3 to 10 percent by weight of an abrasive are incorporated. In the cutting process the abrasive is not ripped off, as it does happen with steel wires bearing the abrasive on their surface, but...     

A flexible plastic strip having oppositely disposed faces, one of said faces being smooth and the other defining a smooth middle portion and opposite end portions diagonally coated with an abrasive. The width of the finishing strip is made approximately the same as an average distance from gum line contact...     

Calendaring of woven polyester fabric at 20 to 60 tons pressure and 200.degree. to 380.degree. F., provides a smooth surface, upon which fine grit abrasive may be applied, to produce flexible coated abrasive articles for polishing applications.

This invention relates to improved fabrics used in the reinforcement of resin-bonded abrasive wheels. The fabrics are characterized by a coating of a novolak resin essentially free of added crosslinking agents.

A diamond paste to be used for treating surfaces of workpieces comprising diamond powder in a mechanical mixture with surface-active and lubricating (cooling) components. The components of the paste are used in the following quantities (in % by weight): diamond powder filler: 30-2 green silicon carbide:...     

An abrasive tool for grinding a combined workpiece of a steel with an ultrahard alloy, comprising a grinding wheel comprising a resinoid binding wheel and synthetic diamond abrasive grits held therein, said grits being characterized by selected combinations of grit size, bulk density and grit strength.

According to the invention, the composition contains an abrasive material (12.5-37.5 vol.-%), a metallic filler (30-60 vol.-%), a mineral binder (5-30 vol.-%) and the balance is an organic binder. The mineral binder is constituted by at least one substance from a group of salts whose melting temperature...     

The invention relates to synthetic, non-fused, aluminum oxide-based abrasive mineral having a microcrystalline structure of randomly oriented crystallites comprising a dominant continuous phase of .alpha.-alumina and a secondary phase, to a method of making the same employing chemical ceramic technology,...     

Abrasive grains are bound to a flexible support by a pattern of resin applied by means of a curved stencil having a wall thickness of 0.08 to 1 mm and having holes with a diameter of 0.05 to 3 mm, the total hole area amounting to 5 to 50% of the area of the stencil. A top binding agent is applied before...     

Delamination-resistant abrasive belts and discs suitable for offhand and automated article finishing comprise a lofty, non-woven, three-dimensional abrasive web adhesively bonded to a stretch-resistant woven fabric with a polyurethane binder comprising the reaction product of poly-1,4 oxybutylene) glycol...     

An abrasive device is defined by a honeycomb or cellular structure which is configured to define the grinding device. The cells of the cellular structure are filled with the normal constituents that make up a grinding wheel such as abrasive grains, a bonding matrix such as an organic resin, and fillers....     

An improved fibrous scouring material is disclosed, that material comprising a fibrous band in the form of a three-dimensional lattice of drawn irregular fibers obtained from a plastic bilaminar film, those fibers being helically crimped and self-bonded together at their mutual contact points, the helically...     

An abrasive member for electrophotographic image-holding member comprising an abrasive dispersed in a resin of linear structure.

An abrasive compound in which individual abrasive grains of various types are joined in a preliminary step into the formation of so-called agglomerated abrasive grains, each of which may contain a number of individual grains. The particular feature of the invention is that the abrasive compound which...     

An improved diamond aggregate abrasive is disclosed comprising milled saw diamond having an average size less than 75 microns held in a silver/copper alloy matrix which also contains a wetting agent for (e.g. titanium). Tests of grinding wheels containing this new aggregate have shown a marked improvement...     

An abrasive disk comprising abrasive grains such as corundum, a bonding material, for example a resin, and a filler material. At least part of the filler material is active in the grinding process. Particles of this filler material are provided in the disk in the form of pellets or granules. The pellets...     

A grinding disk comprising abrasive grains such as corundum, a bonding agent such as phenolic resin, and a filler material. At least part of said filler material is an active filler, i.e. a material that acts chemically and/or physically in the grinding process. At least part of this active filler material...     

A method is provided whereby articles of manufacture, such as tools suitable for use in lens grinding and finishing operations, can be cast with an aluminum filled epoxy composition. The resultant articles are relatively inexpensive and light in weight, and they exhibit the levels of dimensional stability,...     

Loading resistant coated abrasives can be made without the need for a supersize coating of metal stearates or any other material by incorporating phosphoric acids, partial esters of such acids, amine salts of such acids and partial esters, and/or quarternary ammonium salts with at least one long substituent...     

An abrasive or polishing sheet has indicia carried on its rear face overlaid by a translucent textile material providing a surface engageable by hooks, the material being adhered to the said indicia and their information content remain discernible through the said material. The sheet can be secured to...     

Abrasive properties of co-fused alumina zirconia are improved by the addition of from 0.1 to 2% of Y.sub.2 O.sub.3 to the fusion mix and quenching the fused product. Y.sub.2 O.sub.3 ores containing mostly Y.sub.2 O.sub.3 with lesser amounts of rare earth oxides can be substituted for high purity Y.sub.2...     

The grinding media is formed of a concentration of agglomerate free hard particles exceeding 50 percent by weight of the media, wherein the particles are chelated by a dispersing agent, surface treated with a surfactant, mixed with polyether polyol and polyisocyanate plus a catalyst and water and thereafter...     

In corundum abrasive grain which is ceramically coated with ground frit, a binder and fine grain highly abrasive material for the purpose of improving adhesion of the abrasive grain in its processing to resin-bonded abrasives and their use in wet grinding. The fine grain material forms from 1 to 5 weight...     

A resinoid bonded abrasive article in which the resinoid bond includes 5-80% by volume of an improved active filler or grinding aid. The active filler is a mixture of iron pyrites, potassium sulfate and an alkali haloferrate; the alkali haloferrate having the formula A.sub.x Fe.sub.y ++ Fe.sub.z +++...     

A cleaning tape comprising a support having coated thereon a cleaning layer containing a binder and an organic polymer powder is disclosed.

An abrasive article comprises abrasive grain, a binder material and active fillers. The active fillers are metal halogenides or metallic complex salts.

A metallic layer is removed from a coated glass surface (3) by subjecting the coated glass to the abrasive action of a stripping wheel (7) comprising a particulate abrasive in a porous matrix of polyvinyl formal.

Enhanced micromachining rates are observed when lapping discs with standard SiO.sub.x lapping coatings are doped with trivalent or pentavalent additives, such as boron or phosphorous. Doping can be accomplished by subjecting the SiO.sub.x material to a "post glow", i.e., an argon plasma in the presence...     

Grinding stones, especially resinous and metallic grinding stones which have a controlled distribution of abrasive grains are made by a novel method, in which electrically conductive layers of such pattern which controls sites to be bonded with the grains are formed on the selected surface of a binder...     

Particles of agglomerates of abrasive particles held in a porous glassy matrix are produced by mixing abrasive grits with known porous-glass forming compositions. In the resulting product the abrasive grits are held encapsulated within the thin walls of the porous body and tend to concentrate at the...     

In a process for producing hard grinding elements, a synthetic resin having a dynamic viscosity of less than 10 mPa.s is used as the binder. By adding this binder, the mixture of abrasive grains, binders, and fillers is highly thixotropic and can easily be liquefied by vibration and can be filled into...     

Grinding, lapping, and polishing compounds containing an abrasive material, a thickener, and a water-soluble alkylene oxide polymer. In addition to good applications-related characteristics, said compounds have the advantage of permitting the workpieces to be cleaned with water.

The invention is a coated abrasive grinding disk for mounting in the chuck of a drill or the like wherein the grinding pad is of a thermoplastic material having a layer of abrasive material bonded thereto with a layer of thermosetting plastics material.

A diamond abrasive body which comprises a coherent, skeletal diamond mass constituting at least 70 percent by volume of the body and a glass phase comprising up to 30 percent by volume of the body uniformly dispersed throughout the diamond mass. The glass phase has a melting point in the range 800.degree....     

An abrasive product and process is disclosed, for grinding titanium metal and its alloy. The product used to grind the titanium consists of a grinding wheel wherein the abrasive grains are aggregates of silicon carbide particles bonded together with a refractory bond such as silicon oxynitride or a silicate...     

New molded products and methods of manufacturing the same are described. More particularly, the molded products comprise thermoset resins and intimately dispersed inorganic solid particles, and the method comprises in its broadest sense, preheating a thermosetting organic resin and a catalyst for the...     

An abrasive wheel comprised of abrasive granules dispersed throughout and adhered in a matrix with a binder system which comprises a blend of a tough adherent binder and a smear-reducing quantity of a smear-reducing compatible polymer. An abrasive wheel having abrasive granules adhered by the binder...     

This invention relates to organically bonded abrasive articles that include grinding aids. It has been determined that when known grinding aids such as alkali metal sulphates and alkali metal chlorides are cofused in about eutectic proportions and added to thermoset resin bonded abrasive articles in...     

A grinding wheel comprising abrasive grains each of which is coated with a conductive material and a non-conductive binder interposed among said abrasive grains. The amount of said conductive material ranges from 30 to 80% by weight based on said abrasive grains. The abrasive grains coated with said...     

A coated abrasive surface polishing product with excellent finish refinement capability and long life can be made by coating a layer of resilient material laminated to a conventional coated abrasive backing with an elastomeric maker adhesive and conventional abrasive grain. Optionally, an intermediate...     

A coated abrasive which is advantageous for certain applications has at least two distinct layers of abrasive grits: a coarse outer layer and a finer inner layer. The median particle size of the grits in the outer layer is at least 150% of that of the inner layer grits. The grits may be adhered to the...     

The invention is a coated abrasive grinding disc for mounting in the chuck of a drill or the like wherein the grinding pad is of a thermoplastic material having a layer of abrasive material bonded thereto with a layer of thermosetting plastics material.

Grinding wheel having a bonding agent for binding abrasive grains, comprising a reaction product of a synthetic resin and cashew nut sheel liquid or its derivatives. The bonding agent may include a surface active agent.

The present invention provides a flexible, coated abrasive product having a fabric or cloth substrate. The fabric has a warp direction and a fill direction and is preferably woven. The finished coated abrasive product is manually tearable in the warp direction in a straight line. The product is characterized...     

A method is provided for making improved molded abrasive tools by applying centifugal force and/or vibratory action to the abrasive particles during the molding operation. The abrasive is thereby forced and/or sifted preferentially into a closely packed surface layer with close conformity to the mold...     

A grinding wheel is described which is bonded with a phenol formaldehyde resin based bond containing hexamethylenetetramine as the curing agent. The wheels are made by first wetting the abrasive with furfural in varying quantities relative to the amount of hexamethylenetetramine in the phenol formaldehyde...     

A tool for sanding, grinding, or polishing ferrous or non-ferrous work pieces which includes a plurality of abrasive particles, such as silica sand or the like, embedded in a binder matrix formed primarily of polytetrafluoroethylene and equivalent polymers. The matrix may further include a stiffening...     

A method is described for blast cleaning paint and other adhesive coatings from composite surfaces formed of a reinforced matrix material. A special soft media is used at a relatively low pressure to prevent damage to the soft composite material. The preferred method calls for the use of a media having...     

Particulate polymethyl methacrylate polymerized in the presence of alumina trihydrate filler provides a superior blasting media for cleaning surfaces, such as for stripping paint from sensitive substrates like aluminum aircraft skin.

A flat type resinoid grinding wheel, which comprises abrasive grains and phenol resin bond, contains inorganic substance particles in the abrasive grains. The particles are almost the same as the abrasive grains in size but are lower than the abrasive grains in hardness value. Furthermore, the porosity...     

A method of making an abrasive tape comprises the steps of preparing an abrasive composition at least from abrasive grains and a binder, applying the abrasive composition onto a flexible substrate, and drying the applied abrasive composition. The step of preparing the abrasive composition comprises kneading...     

Diamond or CBN polycrystalline abrasive grit useful in tools for grinding or cutting is made by size reducing and leaching non-diamond or non-CBN material from a compact greater than 1,000 microns in diameter to provide polycrystalline abrasive grit having a size of from about 1 to about 1,000 microns...     

A dressing roll having a peripheral surface comprising diamond grains that are bonded by electroplating in a metal ring, the inner surface of which is readily connected to a cylindrical surface of a roll core as a basic structure. The rigid connection between the metal ring containing the diamond grains...     

Diamond or CBN polycrystalline abrasive grit useful in tools for grinding or cutting is made by size reducing and leaching non-diamond or non-CBN material from a compact to provide polycrystalline abrasive grit having a selected and having a network of inter-connected, empty pores dispersed throughout.

Particles of urea formaldehyde furan resin are used as abrasive media in wet or dry blasting.

An abrasive article for polishing glass and ceramic surfaces comprised of a combination of abrasive particles and inorganic glass polishing aid dispersed throughout a three-dimensional nonwoven fibrous web of organic material, and adhered therein by a resinous binder. The article is capable of refining...     

Solid material is ground in a grinding mill and caking of the ground particles is substantially eliminated by including particulate water absorbent polymeric material in the mill.

Abrasive greenware having improved strenght is prepared using a binder comprising poly(ethyloxazoline).

Stitch bonded fabric or other arrays of substantially coplanar and coparallel yarns non-interlaced with other yarns are employed to reinforce the backing for coated abrasive products. A preferred construction with continuous filament polyester yarns is described, together with the cloth finishing process...     

A grinding wheel is disclosed which is made up of sintered aluminous abrasive and a vitrified bond, the vitrified bond being a frit. A large portion of the sintered aluminous abrasive may be replaced by a non-sintered abrasive and the bond may include fillers and/or grinding aids.

The grinding performance of organic bonded abrasive bodies whose abrasive portion is wholly or partially composed of aluminous abrasive grits is significantly improved by providing a magnesium oxide-rich or manganese oxide-rich coating on furfural-wetted grits just prior to addition of resin and filler...     

A bonded abrasive grit structure which may be attached to a tool surface and a method for making a grit structure and tool therefrom. The grit structure includes a plurality of peaks which have a grit particle at the apex and are substantially the same height such that the apexes collectively define...     

A method of preparing abrasive articles exhibiting improved homogeneity and breakdown properties is disclosed. The method comprises admixing abrasive grits and a bond phase comprising silica particles, alumina, a flux and water, to form a slurry, such that the silica particles are on the average smaller...     

An abrasive tape comprises a flexible substrate and an abrasive layer which is overlaid on the flexible substrate and which contains abrasive grains and a binder. The abrasive grains comprise first abrasive grains, which have a mean grain diameter within the range of 0.07 .mu.m to 0.40 .mu.m and a Mohs...     

An abrasive product comprising abrasive grains bonded to at least one major surface of a backing sheet by a binder formed from a blend comprising radiation curable monomer and a thermally curable resinous material. The radiation curable monomer can be selected from the group consisting of isocyanurate...     

A rotary finishing tool, comprising (a) a foamed elastomeric bond where the elastomeric bond has greater than 5% void and contains (i) a medium abrasive grit having a grain size of from about 30 to about 50, and (ii) a fine abrasive grit having a grain size about 70 to about 100. In another embodiment,...     

Paint is removed from surfaces by impacting it with particles of cured unsaturated polyester including about 10-20 weight weight percent methyl methacrylate, the particles having a low ratio of longest to shortest dimension and an average of at least about 40 facets.

A polishing pad for a semiconductor wafer, which pad is made of a foamed fluorine-contained resin sheet and is highly resistant to a corrosive polishing solution such as bromine-methanol system or bromine-methanol-silica powder system.

The back finish of a flexible grinding tool, especially a grinding belt, tains an ingredient which is composed predominantly of plate-like mineral particles, preferably micaceous iron ore. It gives the belt a higher rigidity and better sliding properties on its back.

A coated abrasive is disclosed that has been oversized with an anti-loading amount of a quaternary ammonium anti-static compound, comprising from about 15 to about 35 carbon atoms and a molecular weight not less than about 300, have been found to have a combination of anti-static, lubricity and anti-loading...     

An abrasive tool comprises a base and an abrasive powder bonded to the base in the form of a single-layer structure in which the particles do not substantially overlap or rest one upon another. For the bonding purpose the abrasive powder is either dispersed in a dilute solution of a binder resin and...     

The metal bonded diamond wheel of the invention has a sintered body of a mixture of a diamond powder and a bonding metal powder. The particles of the bonding metal powder or, preferably, particles of both of the diamond powder and the bonding metal powder are provided, prior to powder metallurgical sintering,...     

Diamond compact composed of 60-95 volume % diamond crystals plastically deformed into a closely packed, rigid structure with contacts between the diamond crystals over extended mating surfaces arising from the plastic deformation. The diamond crystals are bonded together by an interstitial bonding material...     

A multilayer abrading tool is produced by first providing a tool substrate with a structured abrading surface. An abrasive grit coating is provided by mixing a temporary binder, an abrasive grit material and an infiltrant powder material. This coating is then applied to the structured surface. The tool...     

In the phenolic bond used for making abrasive tools such as grinding wheels and the like, the addition of certain alkyl or hydroxyalkylcarbamylmethyl triazines improves wet strength properties of the tools.

Abrasive article using sintered sol-gel abrasive particles mixed with other particles having greater friability, and carried in a bond.

An erodable abrasive granule comprising a plurality of first abrasive grains bonded together by a first binder to form an erodable base agglomerate and at least a partial coating of second abrasive grains bonded to the periphery of the base agglomerate by means of a second binder. These abrasive granules...     

A hard facing rod is made by mixing particles of tungsten carbide, particles of a metal binder, and a temporary organic binder. The mixture is pressed, preferably by extrusion, into the form of a rod. The organic binder is removed and the rod is heated to a sufficient temperature to sinter the metal...     

An improved abrasive product such as a grinding wheel is disclosed. The abrasive product contains an active filler mixture of tin, FeS.sub.2, and K.sub.2 SO.sub.4, which mixture improves the grinding quality and versatility of the abrasive product.

An abrasive member comprises a metal film (2) attached to one surface of a flexible sheet (1), a mask (13) of plating resistant material on the exposed surface of the metal film, the plating resistant material having a multitude of discrete openings (14) therein, and metal (3) electrodeposited through...     

A cutter comprises a base plate formed by joining two thin annular members with each other; a groove formed in the outer periphery of the base plate; an annular metal supporting plate, to be positioned in the groove of the base plate, having a plurality of openings formed therethrough; and a cutting...