MXPA98009226A - Abrasive article that comprises an antique component - Google Patents

Abstract

An abrasive article, for example, a coated, agglomerated, or non-woven abrasive article comprising a binder, a plurality of abrasive particles and an anticaking component

Description

ABRASIVE ARTICLE THAT COMPRISES AN ANTI-HAIR COMPONENT, BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to an abrasive article comprising a binder, abrasive granules, and anti-fouling component.

Discussion of the Related Technique There are numerous types of abrasive articles ^ For example, an abrasive article generally comprises bonded abrasive particles such as an affixed abrasive article, attached to a backing such as an abrasive article, or bonded to and / or on a three-dimensional nonwoven substrate such as a nonwoven abrasive article. Each type of abrasive article can also be in a variety of forms. For example, a coated abrasive article may comprise a first layer (also known as a work coat), a plurality of abrasive particles adhered thereto, and therein, and a second layer (also known as a size coat). In some cases, a third layer (also known as supersize coating) may be applied over the sizing coating. Alternatively, a coated abrasive reticle may be a coated abrasive for lapping, comprising an abrasive coating (REF 28815 which may also be referred to as an "abrasive layer") attached to a support wherein the abrasive coating comprises a plurality of abrasive coatings. of abrasive particles dispersed in a binder. In addition, a coated abrasive article can be a structured abrasive comprising a plurality of precisely shaped abrasive compositions bonded to a support. In this case, the abrasive compositions comprise a plurality of abrasive particles. Abrasive articles used for the abrasion of a wide variety of substrates or workpieces made of, wood, plastic, fiberglass, or soft metal ** alloys, or having a layer of enamel or paint. Typically, there is some degree of space between those abrasive particles. During the abrasion process, the material subjected to abrasion of the substrate or workpiece, also known as chip, tends to fill the spaces between the abrasive particles. The filling of the spaces between the abrasive particles with the chip and the subsequent accumulation of the chip is known as loading. The load presents a problem because the life of the abrasive article is reduced and the cutting speed of the abrasive article decreases (thus, more force is required for abrasion). In addition, charging is an exponential problem; Once the chips begin to fill in the spaces between the abrasive particles, the initial chips act as "seed" or "core" for additional loading. The abrasives industry has looked for load-resistant materials for use in abrasive articles. Examples of load resistant materials that have been used include metal salts of fatty acids, urea-formaldehyde resins, waxes, mineral oils, cross-linked silanes, cross-linked silicones and fluorochemical compounds. Preferred materials have been zinc stearate and calcium stearate. A theory for the success of metal stearates as a "anti-caking agent" is the metallic stearate coating sprays the coated abrasive surface during the abrasion process, which in turn causes the chips to also spray from the surface, reducing the load amount in this way.The stearate coatings for the prevention of the load have been used by the abrasives industry for several decades.It has been common to use a binder, with stearate to aid the application and retention of coatings. On the abrasive surface, some minor improvements have been made over the years using stearates with higher melting points, for example, calcium or lithium stearate, and by incorporating additives to improve anti-fouling performance, for example, compounds fluorochemicals, specific attempts to solve the load problem include those taught in U.S. Patent No. 2,768,886 (Twombly); 2,893,854 (Rinker et al); and 3,619,150 (Rinker et al). U.S. Patent No. 2,768,886 discloses an abrasive article with a coating of solid, small particles, consisting essentially of stearates or palitoses. U.S. Patent No. 2,893,854 discloses an abrasive article coated with a continuous film of a resin having solid, small, uniformly dispersed particles of a water insoluble metal soap of a saturated fatty acid having from 16 to 18 carbon atoms. carbon. U.S. Patent No. 3,619,150, discloses a coated abrasive article having an unfilled coating comprising a blended resin composition of a thermosetting resin and any of the thermoplastic or elastomeric resin and a metal soap dispersible in water, in particular, the soap metal insoluble in water, of a saturated fatty acid of Clß to C18, dispersed through the resin composition. U.S. Patent No. 4,609,380 (Barnett) discloses an abrasive wheel having a binder system, comprising a binder and a compatible polymer that reduces slurry and conventional lubricants including metal stearate salts, such as lithium stearate. U.S. Patent No. 4,784,671 (Elbel), discloses a method for improving the abrasive performance of a body for grinding or honing of porous ceramic or bonded plastic comprising filling the pore spaces at least in part with a metallic soap, including salts and soaps of the fatty acids of lauric acid, myristic acid, palmitic acid, stearic acid, aracaric acid and behenic acid. An improvement of described abrasive performance is the reduction of clogged pores of the body to avoid the reforming and forming of rolled metal liners. US Patent No. 4,988,554 (Petersop et al) discloses a coated abrasive article having a backing having a layer of abrasive granules overcoated with a load-resistant coating comprising a lithium salt of a fatty acid on a side and a pressure sensitive adhesive on the other side of the support. U.S. Patent No. 4,396,403 (Ibrahim) discloses a coated abrasive article, which does not need a supersize coating of metal stearates or any other material, which instead incorporates phosphoric acids, partial esters of such acids, amine salts of such acids, and partial esters and / or quaternary ammonium salts with at least one large substituent group on an amino resin or cement sizing adhesives during the manufacture of the coated adhesive article. U.S. Patent No. 4,973,338 (Gaeta et al) discloses an abrasive coating that has been over-filled with an anti-locus amount of an antistatic quaternary ammonium compound comprising from about 15 to 35 carbon atoms, and having a molecular weight not less than of about 300. The examples. of quaternary ammonium compounds include methyl sulfates "-de (3-lauramido-propyl) trimethylammonium, 4,6-stearamidopropyl dimethyl-beta-hydroxyethylammonium nitrate, N, N-bis (2-hydroxyethyl) -N- methosulfate (3 '-dodecyloxy-2'-hydroxypropyl) -methylammonium and diamido phosphate of esteramidopropyl-dimethyl-beta-hydroxyethyl-onium Typically, the quaternary ammonium compound is coated out of a solvent, typically an aqueous alcohol solvent system. U.S. Patent No. 5,164,265 (Stubbs) discloses an abrasive article having, applied as a coated layer on existing layers of an abrasive article or incorporated in the coating formulation that will form the outermost layer of the binder, a fluorochemical selected from the A 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 about 750 and comprising an esq. non-fluorinated polymer uelet having a plurality of fluorinated aliphatic groups pending, which comprise the majority of (a) a minimum of three CF bonds, or (b) at least 25% of the CH bonds have been replaced by CF bonds in such a way that the fluorochemical compounds comprise at least 15% by weight of fluorine. Although the abrasives industry has widely used metal stearates with a good degree of success, the industry is always looking for improved anti-dirt components, particularly to prolong the life of the product.Although there have been a number of improvements recently in the supports, the systems of agglutination and the minerals of the coated abrasives, comparable improvements in the anti-caking components have not yet been achieved, that is, the industry is still looking for a component that is easy to apply, be it relatively cheap, and can be used during abrasion of a variety of workpieces including paint, wood, wood sealants, plastic, fiberglass, composites and fillers and mastics for automotive bodies.

BRIEF. DESCRIPTION OF THE INVENTION In the present invention, an anti-fouling component has been developed for an abrasive article, which meets the needs of the industry, that is, that the present invention relates to an abrasive article construction containing an anti-fouling component, which significantly reduces the load, is coatable, and is relatively inexpensive. The present invention relates to an abrasive article comprising (a) a support having a larger surface area; (b) a plurality of btastvolar particles' Cc) a binder which adheres the plurality of abrasive particles to the larger surface of the support; and (d) an anti-fouling component of any of the formulas I to VI or mixtures thereof. The invention also relates to a bonded abrasive comprising: (a) a plurality of abrasive particles; (b) a binder that adheres the plurality of abrasive particles together; and (c) an anti-locust component of any of formulas I to VI or mixtures thereof. In another embodiment, the invention relates to a nonwoven abrasive comprising (a) an elastic, open nonwoven substrate; (b) a plurality of abrasive particles; (c) a binder that adheres the plurality of abrasive particles in and / or on the elastic, open nonwoven substrate; and (d) an anti-fouling component of any of the formulas I to VI or mixtures thereof. The invention also relates to a method for manufacturing an abrasive article comprising (a) providing a support having at least one larger surface; (b) applying a binder precursor working coating on at least one larger surface of the support; (c) include a plurality of abrasive particles in and / or on the precursor of the working coating binder; (d) at least partially curing or solidifying the precursor of the working binder coating to form a working coating; (e) applying the sizing coat binder precursor on the plurality of abrasive particles and the working coating; (f) curing or solidifying the sizing coat binder precursor to form a sizing coat; (g) applying a peripheral composition on a portion of size coating, the composition comprises an anti-coat component of any of the formulas I to VI 'or mixtures thereof; and (h) solidifying the composition to form a peripheral coating, as well as a method for manufacturing an abrasive article comprising (a) providing a support having at least one larger surface; (b) applying a working coating binder precursor on at least one larger surface of the support; (c) include a plurality of abrasive particles and / or on the working coating binder precursor; (d) curing or at least partially solidifying the precursor of the working coating binder to form a working coating; (e) applying a sizing coat binder precursor composition on the working coating and the plurality of abrasive particles, the sizing coat binder precursor composition comprises a sizing coat and binder precursor. anticarrier component of any of formulas I to VI or; mixtures thereof; and (f) curing or solidifying the sizing coat binder precursor to form a sizing coat. The anti-caking component of the present invention can be any of the formulas I to IV or mixtures thereof: Rl R2 wherein R1 and R2 are independently OH, OR, O '", NH2, NHR, or N (R) 2, with the proviso that if both of R1 and R2 are O", then a cation is present; R is an alkyl; X is O, s, NH, or an aliphatic linking group (including a linear, branched and cycloaliphatic) or aromatic -d-ivalent group having 20 atoms or less and containing carbon and, optionally, nitrogen, oxygen, phosphorus, and / or sulfur in the aliphatic or aromatic group or as a substituent of the aliphatic or aromatic group; p is 0 or 1; and W is an alkyl group, which can be saturated or unsaturated or is a fluorinated hydrocarbon having the formula CmHaF2m +? - a, wherein a is 0 to 2m and m is 4 to 50, wherein the alkyl or hydrocarbon group fluorinated may contain oxygen atoms in a skeleton of the alkyl group or the fluorinated hydrocarbon, respectively, in an amount ranging from 1 to 1/2, the total number of carbon atoms present in the alkyl group or the hydrocarbon; wherein R3 is OH; q is 0 or 1; Z "is a monovalent anion; r is 0 or 1, with the proviso that when q is 0, r is 0 and when q is 1, r is 1 and when q and r are 1, N I contains a positive charge; R4 and R5 independently are H or an alkyl group; A is an aliphatic (including a linear, branched and cycloaliphatic) or divalent aromatic linking group having 20 atoms or less and containing carbon and, optionally, nitrogen, oxygen, phosphorus, and / or sulfur in the aliphatic or aromatic group or as a substituent of the aliphatic or aromatic group, with the proviso that the linking group is connected by a carbon atom to the N of the "formula II; t is 0 or 1; and W is an alkyl group, which can be saturated or unsaturated or W is a fluorinated hydrocarbon having the formula CmHaF2m +? - a, in which a is 0 to 2m and m is 4 to 50, wherein the alkyl group or the fluorinated hydrocarbon may contain oxygen atoms in a skeleton of the group alkyl or the fluorinated hydrocarbon, respectively, in an amount ranging from 1 to 1/2, the total number of carbon atoms present in the alkyl group or the hydrocarbon; wherein R6 and R7 are independently O ", OH, OR, NH2, NHR, or N (R) 2, with the proviso that both of R6 and R7 can not be OH simultaneously or OR simultaneously, and one of R6 and R7 can not be OH when the other of R6 and R7 is OR, and with the proviso that their either or both of R6 and R7 are O ", a cation is present; R is an alkyl group; X is O, S, NH, or an aliphatic linking group (including a linear, branched and cycloaliphatic) or divalent aromatic having 20 atoms or less and containing carbon, and optionally, nitrogen, oxygen? -; phosphorus, and / or sulfur in the aliphatic or aromatic group or co or a substituent of the aliphatic or aromatic group; * p is 0 or 1; and W is an alkyl group, which may be saturated or unsaturated or is a fluorinated hydrocarbon having the formula CmHaF2m +? - a > wherein a is 0 to 2m and is 4 to 50, wherein the alkyl group or the fluorinated hydrocarbon may contain oxygen atoms in a skeleton of the alkyl group or the fluorinated hydrocarbon, respectively, in an amount ranging from 1 to 1/2, the total number of carbon atoms present in the alkyl or hydrocarbon group; IV in which R8 is OH, OR, 0 ', NH2, NHR, N (R) 2, N (R9) (Rxo) (0RU), N (CH2CH3) CH2CH2OC (0) CH = CH2, or wherein, when R8 is 0", then a cation is present, R is an alkyl group, • R9 is H, CH3, or CH2CH3; R10 is CH2 or CH2CH2; • " Rn is hydrogen or C (0) CH = CH2; J is O, NH, or an aliphatic linking group (including a linear, branched and cycloaliphatic) or divalent aromatic having 20 atoms or less and containing carbon and, optionally, nitrogen, oxygen, phosphorus, and / or sulfur in the group aliphatic or aromatic or as a substituent of the aliphatic or aromatic group; v is 0 or 1; and is 0 or 1; and W is an alkyl group, which can be saturated or unsaturated or W is a fluorinated hydrocarbon having the formula CmHaF2m +? - a, wherein a is 0 to 2m and m is 4 to 50, wherein the alkyl group or the Fluorinated hydrocarbon may contain oxygen atoms in a skeleton of the alkyl group or the fluorinated hydrocarbon, respectively, in an amount ranging from 1 to 1/2, the total number of carbon atoms present in the alkyl group or the hydrocarbon; W- (A) t-D wherein D is a monovalent radical, which includes any of: -OH, -NCO, -C02H, -NR1C (0) NR13R, -C (0) NRx5R16, OC (O) C (CH2-C02H) 2 ( OH), (-OOCCH2) (H02C) C (OH) (CH2C02H), -NR .1"2, C (0) (CH2) 2C02H, -NR .1" 2 / C (0) (CH2) 3OH, -NHC (O) 0R17, -NR12C (0) (CH2) 2C (0 ) OR17, -NR12C (O) (CH = * CH) C (O) OR17, • QCCOCOl ^ -CH » in which, if y is 1, OH is in the ortho position, -NR ,, C (0) C (CHJ) jNHC (0) CH »CHj, R12 is a hydrogen or an alkyl group having one to four carbon atoms, R13 and R1 * are independently hydrogen, an alkyl group, or an aliphatic group, which is substituted or unsubstituted, wherein the aliphatic group has carbon atoms or less and contains carbon and, optionally, nitrogen, oxygen, phosphorus, and / or sulfur in the aliphatic group or as a substituent for the aliphatic group; R15 and R16 are independently hydrogen or an alkyl group; R17 is hydrogen or an alkyl group, which may be saturated or unsaturated; R18 is hydrogen or CnH2n + 1, wherein n is from 1 to 8; E is independently COOH or C00", wherein, when one or two COO" groups are present, a cation is present; Q is 0 or NH; R is an alkyl group; and is from 1 to 3; f is 1 or 2; g is from 1 to 6; k is 0 or 1; A is an aliphatic (including a linear, branched and cycloaliphatic) or divalent aromatic linking group having 20 atoms or less and containing carbon and, optionally, nitrogen, oxygen, phosphorus, and / or sulfur in the aliphatic or aromatic group or as a substituent of the aliphatic or aromatic group, with the proviso that when D is OH, N = 00, or NHC (0) NH2, the atom of A close to D is a carbon atom; t is 0 or 1; and W is an alkyl group, which can be saturated or unsaturated or W is a fluorinated hydrocarbon having the formula Cp.H-.F2m +? - a, in which a is 0 to 2m and m is 4 to 50, in where the alkyl group or the fluorinated hydrocarbon may contain oxygen atoms in a skeleton of the alkyl group or the fluorinated hydrocarbon, respectively, in an amount ranging from 1 to 1/2, the total number of carbon atoms present in the alkyl group or the hydrocarbon; Y J is 0, NH, or an aliphatic linking group (including a linear, branched and cycloaliphatic) divalent aromatic group having 20 atoms or less and containing carbon and, optionally, nitrogen, phosphorus, and / or sulfur in the aliphatic or aromatic group or as a substituent of the aliphatic or aromatic group, with the proviso that when J is an aliphatic linking group or a divalent aromatic group, the linking group is connected by the carbon atom to C of formula VI; v is 0 or 1; and W is an alkyl group, which can be saturated or unsaturated or W is a fluorinated hydrocarbon having the formula CmHaF2m +? - a, wherein a is 0 to 2m and is 4 to 50, wherein the alkyl group or the The fluorinated hydrocarbon may contain oxygen atoms in a skeleton of the alkyl group or the fluorinated hydrocarbon, respectively, in an amount ranging from 1 to 1/2, the total number of carbon atoms present in the alkyl group or the hydrocarbon. • BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a cross section of a coated abrasive article according to the present invention. Figure 2 is a cross section of another embodiment of a coated abrasive article according to the present invention. Figure 3 is a cross section of a structured abrasive article according to the present invention. • Figure 4 is a cross section of another embodiment of a structured abrasive article according to the present invention. Figure 5 is a partially enlarged view of a nonwoven abrasive article according to the present invention. * Figure 6A is a cross section taken along line 6-6 of Figure 5. Figure 6B is a similar view. to that of Figure 6A of an alternative embodiment of the present invention.

Figure 7 is a reduced plan view of a portion of a concatenation of abrasive discs according to the present invention. Figure 8 is a greatly reduced perspective view of a coated abrasive material roll according to the present invention. Figure 9 is a cross section of another modality of a coated abrasive article according to the present invention.

DETAILED DESCRIPTION OF THE INVENTION - Abrasive articles and methods for making and using abrasive articles according to the present invention will be discussed in more detail below.

Abrasive articles Abrasive articles typically comprise a plurality of abrasive particles adhered by means of a binder system comprising a binder, which can be derived from a binder precursor. Examples of abrasive articles include coated abrasive articles such as loose or structured abrasive articles, agglomerated abrasive articles, and nonwoven abrasive articles.

Abrasive articles generally comprise abrasive particles secured within a binder. In a bonded abrasive, the binder bonds the abrasive particles together in a formed mass. Typically, this formed mass is in the form of a wheel, and is thus commonly referred to as an abrasive wheel. In non-woven abrasives, the binder binds the abrasive particles in and / or on a fibrous, open, elastic substrate. In coated abrasives, the binder bonds the abrasive particles to a substrate or support. The abrasive articles of the present inventionf comprise an anti-fouling component as part of the abrasive article, which finally comes into contact with a workpiece during abrasion, preferably in the peripheral portion of the abrasive article capable of coming into contact with an abrasive article. Workpiece. The term "peripheral portion" as used herein, refers to the outermost portion of an abrasive article that comes into contact with a workpiece to be subjected to abrasion. Thus, "a peripheral portion" can refer to a peripheral coating or a binder if a peripheral coating is not present. The term "peripheral coating" as used herein, refers to a coating present on the top of a binder of an abrasive article, for example, a binder of a size coating, abrasive composition or abrasive coating, or a binder of a non-woven or agglomerated abrasive article.

Coated Abrasive Articles Coated abrasive articles of the invention can be produced with coatable binder precursor compositions, described herein, on a support. As mentioned above, there are a variety and types of coated abrasive articles. : -r A support for a coated article of the present invention can be any of a number of various materials conventionally used as supports in the manufacture of coated abrasives, such as paper, cloth, film, polymeric foam, vulcanized fiber, woven and nonwoven materials and the like, or a combination of two or more. of those materials or versions treated thereof. The choice of the support material will depend on the intended application of the abrasive article. The strength of the support should be sufficient to resist tearing or other damage in use, and the thickness and uniformity of the support may allow to achieve the thickness and uniformity desired in the product for the intended application.

The support can also be a reinforced fibrous thermoplastic, for example, as described in U.S. Patent No. 5,417,729 (Stout), or an uncut, endless band, for example, as described in WO 93/12911 (Benedict. et al). Likewise, the support can be a polymeric substrate having hooking spouts projecting therefrom, for example, as described in WO 95/19242 (Chesley et al). Similarly, the support can be a reused fabric, for example, as described in WO 95/11111 (Follett et al.). The support may be smooth, textured or perforated, and may have a thickness that ranges generally from about 25 to about 10,000 microns, typically from 25 to 1000 microns.The support may comprise a polymeric film, cloth, sheet of paper, treated versions of them, a mesh made of plastic or metal, and combinations treated or untreated thereof In some applications, it is preferred that the support be water-tight.The thickness of the support should be sufficient to provide the desired strength for the intended application, however, should not be too thick to affect the desired flexibility in the coated abrasive product.The film backing can be made of a thermoplastic material such as polyamides (nylon), polyester, polypropylene, polyethylene, polyurethane, combinations thereof, and the like. The film support can also be a film support with microvoids. As used herein, "micro-vacuum" means that the film has internal porosity. A particularly preferred film is a polyester film (preferably polyethylene terephthalate) with microvacuums having a thickness ranging from 0.0 mm to 0.25 mm, more preferably 0.05 mm. An example of a micro-voided polyester film is one that is commercially available from ICI Limited, Unidor under the commercial designation of "475/200 MELINEX MV". The film supports can be primed or not primed. The support can also be a paper / film sheet, two polymer films, paper / cloth film, film / non-woven material and the like. With reference to FIG. 1, a coated abrasive article 10 of the present invention may include a first coating layer 12 (commonly referred to as a working coating) attached to one side (one, larger surface) of the support 11, at least one layer of abrasive particles 13 joined to the support by the working coating 12, and a second coating layer 16 (commonly referred to as sizing coating), comprising an apticarga component of the present invention, superimposed on the abrasive particles.

With reference to Figure 2, the coated abrasive article 20 of the present invention may include a first coating layer 12, a support 11, at least one layer of abrasive particles 13, and a second coating layer 16 as described with respect to to Figure 1 as well as a peripheral coating 14, comprising an anti-caking component of the present invention, on at least a portion of the second coating layer 16. The coated abrasives of the present invention also include loose abrasive articles and coated abrasive articles. , structured. A loose coated abrasive article comprises a support having an abrasive coating attached to the support. The abrasive coating comprises a plurality of abrasive particles distributed in a binder. In some cases, the binder joins this abrasive coating to the support. Alternatively, an additional material may be used to join the abrasive coating to the support, which may be selected, for example, from the binder precursor described herein and may be the same as or different from the binder precursor used to form the abrasive coating. . Generally, the particle size of the abrasive particles used in a loose coated abrasive fluctuates, on average, from about 0.1 to less than about 200 microns, typically from 0.1 to 120 microns. The abrasive coating may have a smooth outer surface or a textured outer surface. The abrasive coating may also further comprise additives as discussed herein. With reference to Figure 3, a structured abrasive article 30 comprises a support 32 having a plurality of precisely shaped abrasive compositions 31 attached to a larger surface 33 of the support 32. These abrasive compositions comprise a plurality of abrasive particles 34 distributed in a binder 35 * - comprising an anti-caking component of the present invention. In some cases, the binder 35 bonds the abrasive compositions to the support. Alternatively, an additional material may be used to bond the abrasive compositions to the support, which may be selected, for example, from the binder precursor, described herein and may be the same as or different from the binder precursor used to form the abrasive composition. . With reference to Figure 4, an abrasive structure may comprise, in addition to a support 32 having a larger surface 33, a plurality of abrasive compositions 31 comprising a binder 35 and a plurality of abrasive particles 34, a peripheral coating 38, which It comprises an anti-caking component of the present invention, on at least a portion of the plurality of abrasive compositions 31. In general, the particle size range for the abrasive particles used in a structured coated abrasive is the same as that used for an abrasive. coated abrasive article comprising a working coating and a sizing coating as described herein. The abrasive compositions may also comprise the additives discussed herein. Each of the embodiments of a coated abrasive article may contain a peripheral coating, which overlays the binder and the abrasive particles of the abrasive article. For example, the peripheral coating may be superimposed on a size coating, an abrasive coating or abrasive compositions. This coating is commonly referred to as an overlay coating for coated abrasive articles having work and sizing coatings. In a coated abrasive article of the present invention, an anti-fouling component is present in a portion of the abrasive article which will eventually come into contact with a workpiece during abrasion, preferably in a peripheral portion of the coated abrasive article capable of contacting the abrasive article. with a piece of work. For example, the anti-caking component of the present invention can be a size coat binder, an abrasive coating or an abrasive composition, whether or not a peripheral coating is present.; or in a peripheral coating on at least a portion of the sizing coating, abrasive coating 9 abrasive compositions. The anti-caking component of the present invention may be present in a binder and in a peripheral coating, if present. In some cases, it may be preferred to incorporate a pressure sensitive adhesive on the back side of the coated abrasive, so that the resulting coated abrasive can be secured to a backing pad representative examples of pressure sensitive adhesives suitable for This invention includes latex crepe, resin, polymers and acrylic polymers for example, polybutylacrylate, polyacrylate ester, vinyl steres, for example, polyvinyl n-butyl ether, alkyl adhesives, rubber adhesives, e.g., natural rubber , synthetic rubber, chlorinated rubber and mixtures thereof A preferred pressure sensitive adhesive is a copolymer of isaoctylacrylates: acrylic acid Alternatively, the coated abrasive may contain a hooking or walking system of the hook type and ring to secure the coated abrasive to the support pad The curled fabric can be found on the back side of the ab coated with the hooks on the support pad. Alternatively, the hooks may be on the back side of the abrasive coated with the rings or loops on the support pad. Referring to FIG. 9, the coated abrasive 90 may include a first coating layer 12 bonded to a larger surface support 11, in at least one layer of abrasive particles 13 joined to the support '11 by the first coating layer 12, and a second coating layer 16 superimposed on the abrasive particles, a third coating layer 14 (also referred to as a peripheral coating) , comprising an anti-caking component of the present invention, on at least a portion of the second layer of. liner 16, and hooks 17 attached to the support 11 on the rear side, i.e., the side opposite the larger surface of the support 11 containing the abrasive particles 13. This system of hooking or walking of the hook and ring type is best described in U.S. Patent Nos. 4,609,581 and 5,254,194, WO 95/19242 and US Nos. Serial 08 / 181,192; 08 / 181,193; and 08 / 181,195. For example, a precursor of the working coating may be coated directly on a crimped fabric, which may be a woven chenille curl, curl joined by stitching (e.g., as described in U.S. Patent No. 4,609,581 (Ott), or curl woven, for example, brushed nylon.The curled fabric may also contain a sealing liner to seal the curled fabric and prevent the precursor of the working coating from penetrating into the curled fabric.Alternatively, the precursor of the working lining it can be coated directly on the crimped fabric, for example, as described in WO 95/11111 Follette et al.). In this arrangement, the crimped fabric can be releasably engaged with the coupling stems present on the support pad. The precursor of the working coating can also be coated directly on a substrate with latching rods, which generally comprises a substrate having a front surface and a rear surface. The precursor of the working coating can then be applied to the front surface of the substrate, the latching rods projecting from the rear surface. In this arrangement, the latching rods can be releasably coupled to a crimped fabric present on a support pad. It is also within the scope of this invention to have a binder and a plurality of abrasive particles adhered directly to a crimped fabric and having an anti-fouling component present in the binder or in a peripheral coating.

The coated abrasive may be in the form of a roller or abrasive discs, as described in U.S. Patent No. 3,849,949 (Steinhauser et al.). The coated abrasive can be converted into a variety of different shapes and forms such as bands, discs, sheets, tapes, rosaries and the like. The bands may contain a division or union, alternatively the bands may be pieces such as taught for example in WO 93/12911. The width of the band can range from about 0.5 cm to 250 cm, typically anywhere from about 1 cm to 150 cp. The T-length of the band can range from about 5 cm to 1000 cm, typically from 10 cm to 500 cm . The band 'may have straight or serrated edges. The discs may contain a central hole or have no central hole. The discs can have the following forms: round, oval, octagon, pentagon, hexagon or similar; all, these converted forms are well known in the art. The disks may also contain holes for powders, typically for use with a tool containing a vacuum source. The diameter of the disc can range from about 0.1 cm to 1500 cm, typically from 1 to 100 cm. The leaves can be square, triangular or rectangular. The widths range from about 0.01 cm to 100 cm, typically from 0.1 cm to 50 cm. The length ranges from approximately 1 cm to 1000 cm, typically from 10 cm to 100 cm. For example, Figure 7 shows a plan view (reduced) of an abrasive article of the invention, a concatenation 70 of coated abrasive discs connected by the edge 72 able to be coiled convolutionally to form a roll which can be easily unwound. Alternatively, other forms of coated abrasive may be used. A concatenation of coated abrasive is more fully described in U.S. Patent No. 3,849,949; beneficiary. Each disk 72 preferably has a structure as shown in cross-section • in Figures 1 and 2 and at least one other disk similarly constructed 72 is attached along a straight edge 74 of the disk formed by the removal of a small segment. defined by a cord that has a length less than 1/2 the radius of the disc. The straight edge 74 is preferably perforated to facilitate separation of the disc along the cord; however, drilling is not necessary. This concatenation 70 of coated abrasive discs, when wound on a roll, has a binder (e.g. as shown in Figure 1) or peripheral coating (e.g., as shown in Figure 2), which comprises an anti-fouling component. of the present invention, of a disc 72 in releasable contact, direct with the PSA on the back side of the other disc 72 when the concatenation is convolutionally wound. The disks can be easily separated from each other when desired. Alternatively, with reference to Figure 8, which is a reduced perspective view of another preferred article of the invention, a packaged roller 80 of the coated abrasive employing an anti-caking component of the present invention can be used. The roller 80. comprises an elongated sheet of coated abrasive material 82 of the type shown in cross section in any of the "." Figures 1 or 2. The suitable construction materials for the roll 80 may be the same as those used in the articles. coated abrasives mentioned above 10 and 20. In Figure 8, it can be seen that when the coated abrasive material is wound on a roll, a binder or peripheral coating 81, comprising an anti-caking component of the present invention, will be in direct contact, releasable with a layer of PSA 83. When the user wishes to remove a piece of coated abrasive material from the roller 80, the user only needs to unwind a portion of the roller 80 and cut or tear this, portion of the roller. When a PSA is used, it is necessary to prevent the transfer of the anti-caking component to the PSA or vice versa, a release liner can be used, the roller can be loosely rolled, or a binder can be incorporated together with the anti-caking component. It is also feasible to adhere the abrasive particles to the larger surface as well as to the working surface and the opposite surface of a support. The abrasive particles can be the same or different from each other. In this aspect, the abrasive article is essentially two-sided; one side may contain a plurality of abrasive particles which are different from the plurality of abrasive particles on the other side.Alternatively, one side may contain a plurality of abrasive particles having a different particle size than those that are In some cases, this two-side abrasive article can be used in a manner in which both ladps of the abrasive article exerts its abrasive effect at the same time, for example, in a small area such as a corner, one side of the abrasive article can exert its abrasive effect on the surface of the upper workpiece, while the other side can exert its abrasive effect on the surface of the lower workpiece.

Non-Woven Abrasive Articles Non-woven abrasive articles are also within the scope of the invention and include an open, fluffed, fibrous substrate having a binder which binds or binds the fibers at points where they come into contact. Optionally, abrasive particles or non-abrasive particles (such as fillers) can be adhered to the fibers by means of the binder if the manufacturer so desires. For example, to Figure 5, a nonwoven abrasive comprises an open, foamed, fibrous substrate comprising fibers 50 and binders 54 which bonds a plurality of abrasive particles 52 and an anti-loader component of the present invention (not shown) to the fibers. Figure 6A illustrates a view, along the line 6-6, of the binder 54 and the abrasive particles 52. In the embodiment represented by Figure 6A, the binder 54 is combined with a anticarrier component (not shown) of the present invention. Figure 6B illustrates another embodiment of the present invention wherein a peripheral coating 56, comprising an anti-caking component of the present invention, is coated on at least a portion of the binder 54 and the abrasive particles 52. The non-woven abrasives are described in FIG. generally in U.S. Patent Nos. 2,958,593 (Hoover et al.) and 4,991,362. In the present invention, an anti-fouling component is present in an abrasive article part which finally comes into contact with a workpiece during abrasion, for example, in a peripheral portion of the non-woven abrasive article, for example, in a binder. or in a peripheral coating on at least a portion of the binder.

Abglued Abrasive Articles Agglomerated abrasive articles are also within the scope of the invention. An agglomerated abrasive article comprises a binder which adheres T abrasive particles together in the form of a molded product.

Agglomerated abrasives are generally described in U.S. Patent No. 4,800,685 (Haynes). In the present invention, an anti-caking component is present in a part of the abrasive article which finally comes into contact with a piece of. work during abrasion, for example, in a peripheral portion of the agglomerated abrasive article, for example, in a binder or in a peripheral coating on at least a portion of the binder.

Methods for Making Abrasive Articles Coated Abrasive Articles Coated abrasive articles of the present invention can be prepared using coatable binder precursors. These binder precursors can be used independently, to form a treatment coating for the support, for example, a back coating (rear sizing coating), front coating (pre-sizing coating), or saturating coating; a working coating to which the abrasive particles are initially anchored; a sizing coating for the tenacious clamping of the abrasive particles to the support, or any combination of the coatings mentioned above. Also, you can;; a binder precursor may be used in embodiments of the coated abrasive article wherein only a single coating binder is used, i.e., where only a coating of a combination of work coatings / sizing coatings takes place, for example, in an abrasive loose coated. When a coatable binder precursor described herein is applied to a support in one or more treatment steps to form a treatment coating, the treatment coating can be thermally cured by passing the treated support over a hot drum; there is no need to cure the festooning of the support to cure the coating or treatment coatings.

Reference is made to the preparation of a coated abrasive article having a working coating and a sizing coating. After the support has been properly treated with a treatment coating, if desired, a working coating binder precursor may be applied. After applying the working coating binder precursor, the abrasive particles can be applied in and on the precursor of the working coating binder. The abrasive particles can be gravity coated or electrostatically coated. Next, the working coating-binder precursor, which now contains abrasive particles, can be exposed to a heat source which generally solidifies or hardens the binder sufficiently to retain the abrasive particles in the support. In some cases, the working coat binder precursor may be partially curadq before the abrasive particles are included in the working coating as described in U.S. Patent No. 5,36ff, 618 (Masmar et al.). Next, a sizing coat binder precursor can be applied. The working coating binder precursor and / or sizing coat binder precursor may be applied by any suitable method including roller coating, spray coating, matrix coating, curtain coating, and the like. The temperature of the working coating binder precursor and / or sizing coat binder precursor may be at room temperature or higher, preferably 30 to 6Q ° C, more preferably 30 and 50 ° C. The binder precursor of sizing coating / abrasive particles / working coating (at least partially cured) can be exposed to a heat source, for example, via a festoon or drum curing source, or, alternatively, a source of radiation. The sizing coat binder precursor may * contain, for example, acrylates and a photoinitiator. In this case, the binder precursor may be exposed to ultraviolet radiation immediately after applying the size coat binder precursor and before it can be exposed to the heat source described above. Exposure to a heat source will cure or substantially harden the working and sizing coat binder precursor used in coated abrasive constructions. Standard thermal curing conditions may be used to effect curing, for example, temperatures between 50 to 150 ° C, typically 75 to 120 ° C, preferably 80 to 115 * 0. An optional super-coat coating binder precursor may be applied over the size coat by any conventional technique and cured by the standard thermal cure conditions described herein. It is also feasible to use a hot melt binder precursor, for example as described in WO 95/11111, to form a coated abrasive article. The hot melt working coating binder precursor can be prepared by mixing the components of the hot melt resin in a suitable container, preferably one which is not transparent to actinic radiation, at a high enough temperature to liquefy the materials, so that they can be mixed in an efficient way but without thermally degrading them (for example, a temperature of approximately 120 ° C) with stirring until the mixed components melt perfectly; The components can be added simultaneously or sequentially. A preferred hot melt binder precursor comprises an epoxy-containing material, a polyester component having hydroxyl-containing end groups, and an initiator, preferably a photoinitiator, for example, as described in U.S. Patent No. 5,436,063 (Follett et al.). It is also possible to provide hot melt work coatings as uncured pressure sensitive adhesive films in unsupported adhesive rolls. Such films are useful for laminating the working coating to an abrasive article support. It is desirable to roll the adhesive film with a release liner (e.g., silicone-coated kraft paper), with the back pack in a bag or other container that is not transparent to radiation. Hot-melt work coatings can be applied to the support of the abrasive article by extrusion, engraving or coating, (for example, using a coating die, a hot knife, a knife coater, a roll coater: a curtain coater , or a reverse roller coater). When applied by any of these methods, it is preferred that the sizing coating be applied at a temperature of about 100 ° to 125 ° C, more preferably about 80 ° to 125 ° C. Coating is a desirable method of application for use with a support of J weight fabrics and other fabric supports of similar porosity. The hot-melt work coatings can be supplied as stand-alone, unsupported pressure-sensitive adhesive films that can be laminated to the backing and, if necessary, die cut to a predefined shape prior to lamination. The rolling temperatures and pressures are selected to minimize the degradation of the support and runoff through the working coating and can range from room temperature to about 120 ° C and about 30 to 250 psi. A typical profile is laminar at an ambient temperature and 100 psi. Lamination is a particularly preferred method of application for use with highly porous supports, for example, as described in WO 95/11111. Preferably, the hot melt working coating is applied to the support of an abrasive article by any of the methods described herein and once applied in this way it is exposed to an energy source to initiate the curing of the epoxy-containing material. . The epoxy-containing material cures or reticulates on its own. In an alternative manufacturing method, the working coating is applied to the support and the abrasive particles are then projected onto the working coating followed by exposure of the working coating to an energy source. Subsequently a sizing coating on the abrasive particles and the working coating can be applied as a fluid fluid by a variety of techniques such as roller coating, spray coating or curtain coating and can subsequently be cured by drying, heating, or with an electron beam or ultraviolet light radiation. The particular curing method may vary depending on the chemical composition of the sizing coating. A structured coated abrasive can be prepared as described in U.S. Patent Nos. 5,152,917 (Pieper et al.) And 5,435,816 (Spurgeon et al.) Of the beneficiary. One method involves 1) introducing the abrasive suspension in a production tool, wherein the production tool has a specified pattern; 2) insert a support to the external surface of the production tool so that the suspension moistens the larger surface of the support to form an intermediate article; 3) partially curing or gelling at least the resinous adhesive before the intermediate article starts from the outer surface of the production tool to form a structured abrasive article; and 4) removing the coated abrasive article from the production tool. In another method, 1) introducing the abrasive suspension in a support is implied so that the suspension wet the front side of the support forming an intermediate article; 2) enter the intermediate article to a production tool that has a specified pattern; 3) at least partially curing or gelling the resinous adhesive before the intermediate article leaves the outer surface of the production tool to form a structured coated abrasive article; 4) Remove the structured coated abrasive article from the production tool. If the production tool is made of a transparent material, for example a polypropylene or polyethylene thermoplastic, then visible light or ultraviolet light can be transmitted through the production tool and into the abrasive suspension to cure the resinous adhesive. Alternatively, if the coated adhesive backing is transparent to visible light or ultraviolet light, visible or ultraviolet light can be transmitted through the coated abrasive backing. In those two methods, the resulting abrasive suspension or solidified abrasive composition will have the inverse pattern of the production tool. By curing or solidifying at least partially on the production tool, the abrasive composition has a predetermined precise pattern. The resinous adhesive can also be solidified or cured outside the production tool. A loose coated adhesive can be prepared by coating an abrasive suspension on at least one side of a support. A preferred support is a polymeric film, such as a polyester film containing a primer. The coating can be obtained by spraying, rotogravure coating, roller coating, dip coating or knife coating.

After the coating process, the suspension can be solidified, to form an abrasive coating, by exposure to an energy source including thermal or radiation energy (e.g., an electron beam, ultraviolet light and visible light). In any coated abrasive article of the present invention, an anti-caking component can be incorporated into a binder precursor, which forms a peripheral portion of the abrasive article, for example, the anti-caking component can be incorporated into a working coating precursor. , a binder precursor of "sizing coat or an abrasive slurry. The anti-caking component can be combined with the binder precursor using any suitable method, including but not limited to mill having a medium horse engine, for example, commercially available from Charles Ross and Son Company, Hauppaugue, NY, under the trade designation. of "Ross Mili Model ME ÍOOL". The anti-fouling component may be present in a peripheral composition, if present, for example, a super-finished coating of a coated abrasive article also has a working coating construction, a plurality of abrasive particles and a size coating. The anti-fouling component is, in all embodiments, present in a part of the coated abrasive article which finally comes into contact with a workpiece during abrasion.

Nonwoven Abrasive Articles A nonwoven abrasive article can be prepared by combining a binder precursor with abrasive and optionally additive particles to form a coatable binder precursor suspension. The suspension can be coated, for example, by roller coating or spray coating, on. at least a portion of the. fibers of an open, fluffy, fibrous web, and the resulting structure is subjected to conditions sufficient to effect curing of the binder precursor, as described herein A general process for making open, fluffed, nonwoven abrasives includes those generally illustrated in U.S. Patent No. 2,958,593, and those prepared in accordance with the teachings of U.S. Patent No. 4,991,362 and U.S. Patent No. 5,025,596 A anti-caking component of the present invention can be included in the suspension prior to coating or in A peripheral composition applied to at least a portion of the cured suspension so as to form a peripheral coating The anti-fouling component is present, in all the modes, present in a part of the non-woven abrasive article which will finally come into contact with a part of the abrasive. Work during abrasion.

Article Agglomerated Abrasives A general procedure for manufacturing an agglomerated abrasive of the invention includes mixing together the binder precursor, abrasive particles and optionally additives to form a homogeneous mixture. The precursor of the binder is then subjected to conditions, described, sufficient to effect the. cured and / or "solidification to form an agglomerated abrasive." An anti-caking component of the present invention may be included in the binder precursor prior to curing or in a peripheral composition applied to at least a portion of the molded product to form a peripheral coating. anticarga component is present, in all the modalities, present in a part of the agglutinated abrasive article which finally will come into contact with a piece of work-during the abrasion.- Binder System A binder according to the present invention comprises a cured or solidified binder precursor and serves to adhere a plurality of abrasive particles together (such as an agglomerated abrasive article) or to a substrate (i.e., a support for a coated abrasive or an abrasive). abrasive you did not go). The term "binder precursor" as used herein refers to an uncured or fluid binder. Organic binders suitable for an abrasive article of the present invention are formed from an organic binder precursor; however, it is within the scope of the present invention to use a water-soluble binder precursor or water-dispersible binder precursor, such as a cement joint. ** The binder precursor is preferably a thermosetting resin. Examples of thermosetting resins include phenolic resins, aminoplast resins having pendent carbon-unsaturated groups, urethane resins, epqxi resins, urea-formaldehyde resins, isocyanurate resins, melamine-formaldehyde resins, acrylate resins, isocyanurate resins acrylated. "resins" of acrylated urethane, acrylated epoxy resins, bismaleimide resins, and mixtures thereof Phenolic resins are commonly used as a binder precursor for abrasive articles due to their thermal properties, availability, costs and ease of handling. There are two types of phenolic, resol and novolac resins: Resole phenolic resins have a molar ratio of formaldehyde to phenol, greater than or equal to one to one, typically between 1.5: 1.0 to 3.0: 1.0. they have a molar ratio of formaldehyde to phenol, from less than one to 1. The phenolic resin is preferably a resole phenolic resin Examples of commercially available phenol resins include those known under the trade designations of "Varcum" and "Durez." " from Occidental Chemical Corp., Tonawanda, NY; "Arofßne" and "Arotap" from Ashland Chemical Company, Columbus, OH; "Resino?" from Monsanto, St. Louis, MO; and "Bakelite" by Union Carbide, Danbury, CT. • - * It is also within the scope of the present invention to modify the physical properties of a phenolic resin. For example, a plasticizer, latex resin or reactive diluent may be added to a phenolic resin to modify the flexibility and / or hardness of the cured phenolic binder. A preferred aminoplast resin is one that has at least one α, β-unsaturated carbonyl group pending per molecule, which can be prepared according to the description of U.S. Patent No. 4,903,440 (Larson et al,). The aminoplast resins have at least one α, β-unsaturated carbonyl group pending per molecule u. oligomer. These unsaturated carbonyl groups can be acrylate, methacrylate or acrylamide type groups. Examples of such materials include N-hydroxymethyl-acrylamide, N, Nf-oxydimethylene-bisacrylamide, ortho and for phenol-asylamidomethylated, phenolic-acrylamidomethylated novolac and combinations thereof. These materials are further described in U.S. Patent Nos. 4,903,440, 5,055,113; and 5,236,472. The polyurethanes can be prepared by reacting approximate stoichiometric amounts of polyisocyanates such as polyfunctional polyols. The most common types of polyisocyanates with toluene diisocyanate (TDI) * "and the 4,4'-diisocyanate diphenylmethane (MDI) which are available under the trade designations of" Isonate "from Upjohn Polymer Chemicals, Kalamazoo, MI and "Mondur" by Miles, Inc., Pittsburgh, Pa. Common polyols for flexible polyurethanes are polyesters such as polyethylene glycols, which are available under the trade designations of "Carbowax" from Union Carbide, Danbury, CT; "Voranol "from Dow Chemical Con., Midland, MI; and" Pluracol E "from BASF Corp., Mount Olive, NJ; polypropylene glycols, which are available under the trade designations of" Pluracol P "from BASF Corp., and" Voranol "from Dow Chemical Con., Midland, MI; and polytetramethylene oxides, which are available under the trade designations of" Polymeg "from QO Chemical Inc., Lafayette, IN;" Poly THF "from BASF Corp., Mount Olive , NJ, and "Tetrathane" by DuPont, Wilmington, DE Functional hydroxide polyesters are available under the trade designations of "Multranol" and "Desmophene" from Miles, Inc., Pittsburgh, PA. Virtually all polyurethane formulations incorporate one or more catalysts. Tertiary amines and certain organometallic compounds, especially those based on tin, are the most common. Catalyst combinations can be used to balance the rate of polymer formation. The epoxy resins have an oxirane ring and are polymerized by opening the ring. Such epoxy resins include monomeric epoxy resins and polymeric epoxy resins. Those resins can vary greatly in the nature of their skeletons and substituent groups. For example, the backbone can be of any type normally associated with epoxy resins and substituent groups thereon, can be any free group of an active hydrogen atom that reacts with an oxirane ring at room temperature. Representative examples of acceptable substituent groups include halogens, ester groups, ether groups, sulfonate groups, siloxane groups, nitro groups and sulfate groups. Examples of some preferred epoxy resins include 2,2-bis [4- (2,3-epoxypropoxyphenol) propane (diglycidyl ether of bisphenol A)] and the materials commercially available under the trade designations, "Epon 828", "Epon 1004"and" Epon 1001F "available from Shell Chemical Co., Houston, TX," DER-331"," DER-332"and" DER-334"available from Dow Chemical Co., Midland, MI. Other suitable epoxy resins include glycidyl esters of novolac phenol formaldehyde (for example, "DEN-431" and "DEN-438" available from Dow Chemical Co., Midland, MI). Other epoxy resins include those described in U.S. Patent No. 4,751,138 (Tumey et al). " The urea-aldehyde resins used in the binder precursor compositions of the present invention may be comprised of urea or any urea derivative and any aldehyde which are capable of forming cohesive bonded films, which have the ability to react together at a rate accelerated in the presence of a catalyst, preferably a cocatalyst, and giving an abrasive article with acceptable abrasion performance for the intended use. The resins comprise the product of the reaction of an aldehyde and a "urea" (as defined herein further). Urea-formaldehyde resins are generally preferred in the abrasive industry, as noted above, due to their thermal properties, availability, low cost and ease of handling. The urea-aldehyde resins are preferably 30-95% solids, more preferably 60-80% solids, with a viscosity which ranges from about 125 to about 1500 cps (Brookfield viscometer, use number 3, 30 rpm, ° C) before the addition of water and catalyst and have a molecular weight (number average) of at least about 2.00, preferably ranging from about 200 to 700. The urea-aldehyde resins useful for the present invention include • those described in the Patent United States No. 5,486,219 (Ford et al.). • * " A particularly preferred urea-aldehyde queen for use in the present invention is what is known under the trade designation "AL3029E" from Borden Chemical. This is an unmodified urea-formaldehyde resin (ie it does not contain furfural) with these characteristics: 65% solids, viscosity (Brookfield, use # 3, 30 rpm, 25 ° C) of 325 'cps, a content of formaldehyde of 0.1-0.5%, and a molar ratio of formaldehyde to urea (ratio "F / U") ranging from about 1.4: 1.0 to about 1.6: 1.0. The urea resin binder precursor systems preferably employ a cocatalyst system. The cocatalyst may consist essentially of a Lewis acid, preferably aluminum chloride (A1C13), and an organic or inorganic salt. A Lewis acid catalyst is simply defined as a compound that accepts a pair of electrons and preferably has an aqueous solubility at 15 ° C of at least about 50 grams / cc. Lewis acids (or compounds that behave like Lewis acids) that are preferred are chloride, aluminum, iron (III) chloride, and copper (II) chloride. A Lewis acid which is particularly preferred is aluminum chloride in any of its non-hydrated forms (A1C13) or hexahydrate form (A1C13-6H20). '- Lewis acid is. typically and preferably used in the binder precursor system at a fluctuating amount of from about 0.1 to about 5.0 weight percent of the total weight of the binder precursor, such as an aqueous solution at 20-30% solids. If aluminum chloride (A1C13) is used, it has been •• found that 0.6 percent by weight produces an aqueous solution of. A1C13 at 28% solids gives the preferable results. Acrylate resins include monomeric and polymeric compounds containing carbon, hydrogen and oxygen atoms, and optionally, nitrogen and halogens. The oxygen or nitrogen atoms or both are generally present in the ether, ester, urethane, amide, and urea groups.

The ethylenically unsaturated compounds preferably have a molecular weight of less than about 4,000 and are preferably esters made from the reaction of compounds containing monohydroxy aliphatic groups or polyhydroxy aliphatic groups and unsaturated carboxylic acids, such as acrylic acid, methacrylic acid / acid itaconic, crotonic acid, isocrotonic acid, laalelic acid, and the like. Representative examples of acrylate resins include methyl methacrylate, ethyl methacrylate, ethylene glycol diacrylate, ethylene glycol dimethacrylate, hexandiol diacrylate triethylene glycol diacrylate, trimethylolpropane triacrylate, glycerol triacrylate, pentaerythritol triacrylate, pentaerythritol tri- methacrylate, pentaerythritol tetraacrylate and pentaerythritol tetramethacrylate. as those unsaturated monomers, for example, styrene, divinylbenzene, and vinyl toluene. The acrylated isocyanurates are isocyanurate derivatives having at least one pendant acrylate group, which are further described in U.S. Patent No. 4,652,274 (Boettcher et al.). A preferred acrylated isocyanurate is tris (hydroxyethyl) isocyanurate triacrylate. Acrylated urethanes are diacrylate esters of hydroxy-terminated isocyanate-terminated polyesters or o-polyethers. Examples of commercially available acrylated urethanes include those available under the trade designations, "UVITHANE 782", "CMD 6600", "CMD 8400", and "CMD 8805", from Radcure Specialties, Inc., Atlanta, GA. Acrylated epoxies are the monoacrylate and diacrylate esters of epoxy resins, such as bisphenol A epoxy resin diacrylate steres. Examples of commercially available acrylic epoxies include "CMD 3500", CMD 3600", and" CMD 3700" , available from Radcure Specialties, Inc., Atlanta, GA. Bismaleimide resins are further described in U.S. Patent No. 5,314,513 of the beneficiary.In addition to the thermosetting resins, a hot melt resin may also be used. The binder precursor system can comprise a hot melt pressure sensitive adhesive, which can be cured with energy to provide a binder In this case, because the binder precursor is a hot melt composition, it is particularly useful with fabric, textile or cloth supports, since this binder precursor does not penetrate the interstices of the porous support, the flexibil d and the natural folding ability of the support are preserved. Exemplary hot-melt resins are described in U.S. Patent No. 5,436,063 (Follett et al.). The hot melt binder precursor system may comprise an epoxy-containing material, a polyester component, and an effective amount of an initiator for energetically curing the binder. More particularly, the binder precursor may comprise from about 2 to 95 parts of the epoxy-containing material and, correspondingly, from about 98 to 5 parts of the polyester component, as well as the initiator. An optional hydroxyl-containing material having hydroxyl functionality greater than 1 may also be included. Preferably, the polyester component has a Bookfield viscosity which exceeds 10,000 mili Pascals at 12 ° C to 200,000, more preferably about 10,000 to 50,000, and more preferably about 15,000 to 30,000. The polyester component can be the product of the reaction of a dicarboxylic acid selected from the group consisting of saturated aliphatic dicarboxylic acids containing from 4 to 12 carbon atoms (and diester derivatives thereof) and aromatic dicarboxylic acids containing 8 to 15 carbon atoms (and diester derivatives thereof) and (b) a diol having from 2 to 12 carbon atoms.

Abrasive Particles The abrasive particles useful in the invention can be of any conventional grade used in the formation of abrasive articles. The abrasive particles can be formed of, for example, flint, garnet, ceria, aluminum oxide (including molten aluminum oxide and heat treated), alumina zirconia (including fused alumina zirconia as described, for example in US Pat. 3,781,172; 3,831,407; and 3,893,826, and commercially available from the Norton Company of Worcester, MA, under the trade designation "NorZon" £ r diamond, silicon carbide (including refractory-coated silicon carbide as described, for example, in U.S. Patent No. 4,505,720 (Gabor et al.)), silicon itride, alpha-alumina-based ceramic material (as described, for example, in U.S. Patent Nos. 4,518 * 397 (Leitheiser et al.); 4,574,003 (Gerk et al.); 4,744,802 (Schwabel et al.); 4,770,671 (Monroe et al.); 4,881,951 (Wood et al.); And 5,011,508 (Wald et al.)), Titanium diboride, boron carbide; , tungsten carbide, carbide t titanium, iron oxide, cubic boron nitride and mixtures thereof. The diamond and cubic abrasive boron nitride in the form of grains can be monocrystalline or polycrystalline.

The abrasive particles can be individual abrasive granules or agglomerates of individual abrasive granules. The abrasive particles can have a particle size ranging from about 0.01 to 1500 microns, typically from 1 to 1000 microns. As discussed above, abrasive particles having a particle size of from about 0.1 to less than 200 microns, typically from 0.1 to 120 microns, are frequently used for coated abrasives together. The frequency (concentration) of the abrasive particles on the support depends on the desired application and is within the "skills of a person skilled in the art." The abrasive particles can be oriented or applied without orientation, depending on the requirements of the product. particular adhesive.The abrasive particles can be applied as an open or closed coating.A closed coating is one in which the abrasive particles completely cover the larger surface of the support.In an open coating, the abrasive particles cover approximately 20 to 90% of the major surface of the support, typically 40 to 70% An abrasive article of the present invention may contain a mixture of abrasive granules and diluent particles. The diluent particles can be selected from the group consisting of: (1) an inorganic particle (non-abrasive inorganic particle), (2) an organic particle, (3) abrasive agglomerate containing aibrasive granules, (4) a compound diluent particle containing a mixture of inorganic particles and a binder; (5) a composite diluent particle containing a mixture of organic particles and a binder. The non-abrasive inorganic particles typically include materials having a Moh hardness of less than 6. The non-abrasive inorganic particles may include grinding aids, fillers and the like, as described herein. The particle size of the diluent particles can range from about 0.1 to 1500 microns, typically from 1 to 1000 microns. The diluent particles can have the same particle size and particle size distribution as the abrasive particles. Alternatively, the diluent particles may have a different particle size and particle size distribution.

Optional Additives Optional additives may be included, such as, for example, fillers (including grinding aids), fibers, antistatic agents, lubricants, wetting agents, surfactants, pigments, dyes, coupling agents, plasticizers, release agents, suspending agents, curing agents including free radical initiators and photoinitiators, in the abrasive articles of the present invention. In addition, additives may be included to improve the reactivity, crosslinking and vitreous transition temperature of the anti-fouling component, depending on the selected anti-fouling component.; for example, trimetinol propane triacrylate (TMPTA) can be used in addition to the anti-locus component, stearyl acrylate, to improve the reaction rate, i.e., the copolymerization, thermal resistance and mechanical properties of stearyl acrylate. In those cases, however, the chemical composition of the additive may require that additional components be included in the binder precursor composition to assist curing; for example, a photoinitiator may be required when using acrylates. The amounts of those materials can be selected to provide the desired properties. Examples of fillers useful for this invention include: metal carbonates (such as calcium carbonate (limestone, calcite, marble, travertine, marble and calcination), calcium and magnesium carbonate, sodium carbonate, magnesium carbonate), silica ( such as quartz, glass beads, glass bubbles and fiberglass), silicates (such as talc, clays (montmorillonite) feldspar, mica, calcium silicate, calcium raetasilicate, sodium aluminosilicate, sodium silicate) sulfates metallic (such as calcium sulfate, barium sulfate, sodium sulfate, sodium aluminum sulfate, aluminum sulfate), gypsum, see iculite, wood polyo, aluminum trihydrate, carbon black, metal oxides (such as calcium oxide, aluminum oxide, titanium dioxide) and metal sulfites (such as calcium sulfite). Examples of "useful fillers" also include silicon compounds, such as silica powder, for example, powdered silica having a particle size of about 4 to 10 mm (available from Akzo Chemie America, Chicago, IL), and calcium salts , such as calcium carbonate and calcium metasilicate (available under the trade designations of, "Wollastokup" and "Wollastonite" from Nyco Company, Willsboro, NY) Examples of antistatic agents include graphite, carbon black, vanadium, humectants and the like These antistatic agents are disclosed in U.S. Patent Nos. 5,061,294; 5,137,542; and 5,203,884 A coupling agent can provide an association bridge between the binder and the filler particles Additionally the coupling agent can provide an association bridge between the binder and the abrasive particles Examples of coupling agents include silanes, ti tanatos, and circoaluminates. There are several means to incorporate the coupling agent. For example, the coupling agent can be added directly to the binder precursor. The binder may contain from about 0.01 to 3% by weight of coupling agent. Alternatively, the coupling agent can be applied to the surface of the filler particles. In yet another embodiment the coupling agent is coupled to the surface of the abrasive particles before being incorporated into the abrasive article The abrasive particle may contain from about 0.01 to 3% by weight of coupling agent. such as an initiator, for example, when the source of energy used to cure or harden a binder precursor is heat, ultraviolet light or visible light to generate free radicals Examples of curing agents such as initiators that generate free radicals after of exposure to ultraviolet light or heat include organic peroxides, azo compounds, quinones, nitroso compounds, acyl halides, hydrazones, mercapto compounds, pyril or compounds, imidazoles, chlorotriacines, benzoin, benzoyl alkyl ethers, diketones, phenones, and mixtures thereof Commercially available photoinitiators include those available from Ciba Geigy Company, Hawthore, NY, under the trade designations of "IRGACURE 651" and "IRGACURE 184" and those available from Merck &; Company, Incorporated, Rahway, NJ, under the trade designation "DAROCUR 1173" (all of which generate free radicals after exposure to ultraviolet light) and those available from Ciba Geigy Company, Hawthore, NY, under the trade designation of "IRGACURE 369w (which generates free radicals after exposure to ultraviolet light.) In addition, initiators that generate free radicals after exposure to visible light as described, in U.S. Patent No. 4,735,632. an initiator is used in amounts ranging from about 0.1 to about 10% by weight, preferably from 2 to 4%, based on the weight of the binder precursor.It is within the scope of the present invention to use an initiator even if The binder precursor is exposed to an electron beam source.

ANTICARGA COMPONENT An anti-fouling component of the present invention is present in a part of the abrasive article which finally comes into contact with a work piece during abrasion. For example, an anti-caking component may be present in a binder of a sizing coat or in a peripheral coating, for example, a super-sizing coating, or both, of a coated abrasive article; a binder of an abrasive composition or a peripheral coating, both, of a structured abrasive article, the binder of a coating / abrasive layer or peripheral coating, or both, of a loose abrasive article; a coating of peripheral binder, or both, of an agglomerated abrasive article; or a binder or peripheral coating, or both, of a non-woven abrasive article. Preferably, an anti-caking component is present in a peripheral coating. An anti-caking component of the present invention is a compound having a hydrocarbon chain and a polar group. The anti-caking components of the present invention include the compounds of any of formulas I to VIII or mixtures thereof: wherein R1 and R2 are independently OH, OR, O ", NH2, NHR, or N (R) 2, with the proviso that if either or both of R1 and R2 are O", then there is a cation, for example, a monovalent cation, M +, may be present, if any of R1 or R2 are O ", and two monovalent cations, M +, or a divalent cation, V2 +, may be present, if both of R1 and R2 are O"; R1 and R2 are independently preferably, "OH or NH2, more preferably O" or OH; if present, M + is independently Li +, K +, Na +, Rb +, Cs +, or N + (R ') -, wherein R' is independently hydrogen or an unsubstituted or substituted alkyl group, preferably CH3, CH2CH3, or CH2CH2OH; preferably M + is K + or Na +; if present, V2 + is Ca2 +, Mg2 +, Ba2 \ Zn2 \ Sr2V: Ti2 +, Fe2 +, Co2 \ Ni2 +, Cu2 +, Ag2 +, Cd2 \ Pb, Sn2 +, Pd2 +, or Zr2 +, preferably Ca, Mg2 +, or Zn2 +; R is an alkyl group, preferably CnH2r? , wherein n is 1 to 30, preferably 1 to 10, more preferably 1 to 2; X is O, S, NH, or an aliphatic linking group (including a linear, branched and cycloaliphatic) or divalent aromatic having 20 atoms or less, and containing carbon, and optionally, nitrogen, oxygen, phosphorus, and / or sulfur in the aliphatic or aromatic group or as a substituent of the aliphatic or aromatic group, X is, preferably O or NH, more preferably O; p is 0 or 1, more preferably 1; and W is an alkyl group, which may be saturated or unsaturated, preferably W has a formula C n H 2"n, wherein n is from 10 to 100, preferably from 12 to 30, most preferably from 18 to 22, or W is a fluorinated hydrocarbon having a formula CrnHaF2ra ,,, ,, in which a is 0 to 2? T? and m is 4 to 50, preferably 6 to 30, more preferably 8 to 20, wherein the alkyl group or the fluorinated hydrocarbon may contain oxygen atoms in a skeleton of a group of alkyl or the fluorinated hydrocarbon, 'respectively, in an amount ranging from 1 to 1/2, the total number of carbon atoms present in the group * alkyl or hydrocarbon, ie 1 an / 2 in the case of Cr? H2n +? or l a m / 2 in the case of CmHaF2m +? -. a; if only one boron compound of the formula I is present and a salt is formed, that is, either or both of R1 and R2 are O "and a cation or cations are present, those cations are not limited to M + and V2 +; other words, a cation or combination of cations may be present so that cumulative positive charge equals the cumulative negative charge of a boron compound, for example, a metal cation or a quaternary ammonium cation, tertiary ammonium, secondary ammonium may be present. or primary ammonium, with a positive charge equal to the cumulative negative charge of the boron compound instead of M + and V2 +; alternatively, those cations may be present in addition to M + and v2 + so that the cumulative positive charge of all the cations is equal to the cumulative negative charge of the boron compound; if two or more of the boron compounds of formula I are mixed and, in two or more boron compounds, R1 and / or R2 are 0", a metal cation or a quaternary ammonium, tertiary ammonium, ammonium cation may be present. secondary or primary ammonium with a positive charge equal to the cumulative negative charge of the boron compounds in place of the M + and V2 +, alternatively, those cations may be present in addition to the M + and V2J so that the cumulative positive charge * of all the cations is equal to the cumulative negative charge of the boron compounds; wherein R3 is OH; q is 0 or 1; Z "is a monovalent anion, for example, H2P04"; HS04", N03"; Cl "; Br", I ", F", CH3S04", H2PO3"; CnH2n + 10P03H ", Cr-H2n +? P03H", wherein n is from 1 to 100, preferably from 1 to 30, more preferably from 10 to 20; preferably Z "is H2P04"; H2P03"; HS04"; or CH3SO-f; more preferably H2P04 or H2P03"; r is 0 or 1, with the proviso that when q is 0, r is 0 and when q is 1, r is 1 and when q and r are 1, N contains a positive charge; R4 and R5 are independently H or an alkyl group, preferably CnH2n + ?, where n is from 1 to 30, preferably from 1 to 10, more preferably from 1 to 2; A is an aliphatic linking group (including a linear, branched and cycloaliphatic group) or divalent aromatic having 20 atoms or less, and containing carbon and, optionally, nitrogen, oxygen, phosphorus, and / or sulfur in the "aliphatic or aromatic group" or as a substituent of the aliphatic or aromatic group, with the proviso that when the linking group is connected by a carbon atom to the N of the formula II, when t = 1, preferably A is C (= 0), C (= 0) CH2, NHC (-O), OC (= 0), 0CH2, 0CH2CH2, OCH (CH3) CH2; t is 0 or 1, preferably 0, and W is an alkyl group, which can be be saturated or unsaturated, preferably W has a formula C n H 2nf ?, in which n is from 10 to 100, preferably from 12 to 30, more preferably from 18 to 22, or W is a fluorinated hydrocarbon that has a formula CmHaF2mt? -a, in which a is 0 a 2m and m is 4 to 50, preferably 6 to 30, more preferably 8 to 20, wherein the alkyl group or the fluorinated hydrocarbon may contain oxygen atoms in a skeleton of the alkyl group or the fluorinated hydrocarbon, respectively , in an amount ranging from 1 to 1/2, the total number of carbon atoms present in the alkyl or hydrocarbon group, ie, 1 an / 2 in the case of CnH2n +? or l to m / 2 in the case of CmHaF2mt? -a; wherein R 6 and R 7 are independently O ", OH, OR," NH 2, NHR, or N (R) 2, with the proviso that both of R 6 and R 7 can not be simultaneously OH or simultaneously OR, and one of Rd and R7 can not be OH when the other of R6 and R7 is OR, and with the proviso that if either or both of R6 and R7 are O ", a cation is present, for example, a monovalent cation may be present, M if any of R6 or R7 are O ", and two monovalent cations, M1 ', or a divalent cation, V2", may be present, if R6 or R7 are both O "; preferably R6 and R7 are independently O "or NH2, more preferably O"; R is an alkyl group, preferably CnH2p + ?, where n is 1 to 30, preferably 1 to 10, more preferably 1 to 2; if present, Mf is independently Li +, KJ Na +, Rb +, Cs +, or N + (R ') wherein R' is independently hydrogen or an unsubstituted or substituted alkyl group, preferably CH3, CH2CH3, or CH2CH? OH; preferably M + is K + or Na '; if present, V2 + is Ca2t, Mg2 +, Ba2 +, Zn2% Sr2V Ti2 +, Fe2% Co +, Ni2 +, Cu \ Ag2, Cd2 \ Pb2 +, Sn2 +, Pd2 ', or Zr2t, preferably Ca2 +, Mg2t, or Zn2 +; X is O, S, NH, or an aliphatic linking group (including a linear, branched and cycloaliphatic) or divalent aromatic having 20 atoms or less, and which "contains carbon, and optionally, nitrogen, oxygen, phosphorus, and / or sulfur in the aliphatic or aromatic group or as a substituent of the aliphatic or aromatic group, X is preferably 0 or NH, more preferably O; p is 0 or 1, preferably 1; and W is an alkyl group , which may be saturated or unsaturated, preferably W has a formula C n H 2n + 1, wherein n is from 10 to 100, preferably from 12 to 30, most preferably from 18 to 22, or W is a fluorinated hydrocarbon having a formula CraHaF2m +? - a, in which a is 0 to 2m and m is 4 to 50, preferably from 6 to 30, more preferably from 8 to 20, wherein the alkyl or hydrocarbon group fluorinated may contain oxygen atoms in a skeleton of an alkyl group or the fluorinated hydrocarbon, respectively, in an amount ranging from 1 to 1/2, the total number of carbon atoms present in the alkyl or hydrocarbon group, i.e. from 1 to n / 2 in the case of CnH2n +? or l a m / 2 in the case of CmHaF2m +? - a; if only one phosphate compound of the formula III is present and a salt is formed, ie, either or both of R6 and R7 are 0"and a cation or cations are present, those cations are not limited to M * and V2 +; in other words, a cation or combination of cations may be present so that cumulative positive charge equals the cumulative negative charge of a phosphate compound, for example, a metal cation or a quaternary ammonium cation, tertiary ammonium may be present. , secondary ammonium or primary ammonium, with a positive charge equal to the cumulative negative charge of the phosphate compound instead of M + and V2 +, alternatively, these cations may be present in addition to M + and V2 + so that the cumulative positive charge of all the cations is equal to the cumulative negative charge of the phosphate compound, if two or more of the phosphate compounds of formula III are mixed and, in two or more phosphate compounds, RÉ and / or R7 are Or, "a metal cation or a quaternary ammonium cation, tertiary ammonium, secondary ammonium or primary ammonium with a positive charge equal to the cumulative negative charge of the phosphate compounds instead of M + and v2 + may be present; alternatively, those cations may be present in addition to the M + and V2 +, so that the cumulative positive charge of all the cations is equal to the cumulative negative charge of the phosphate compounds; wherein R8 is OH, 'OR, 0", NH2, NHR, N (R) 2, N (R9) (R10) (OR11), N (CH2CH3) CH2CH2OC (0) CH = CH2, or R8 is preferably OH, 0", NH2, more preferably 0"; wherein, when R8 is O ", then a cation is present, preferably a monovalent cation M +, if present, Mf is independently Li K *, Ma +, Rb +, Cs +, or N + (R ') 4, in where R 'is independently hydrogen or an unsubstituted or substituted alkyl group, preferably CH3, CH2CH3, or CH2CH2OH, preferably M + is K + or Na +; R is an alkyl group, preferably CnH2n.?, Wherein n is from 1 to 30, preferably from 1 to 10, more preferably from 1 to 2; R9 is H, CH3, or CH2CH3; R10 is CH2 or CH2CH2; Rn is hydrogen or C (0) CH = CH2; J is O, NH, or an aliphatic linking group (including a linear, branched and cycloaliphatic) or divalent aromatic having 20 atoms or less, and containing carbon, and - optionally, nitrogen, oxygen, phosphorus, and / or sulfur in the aliphatic or aromatic group or as "an substituent of the aliphatic or aromatic group, J is preferably O, NH, C (= 0) CH2, 0CH20, OCH2CH20, 0CH (CH3) CH20, 0CH2, 0CH2CH2, or 0CH (CH3) CH2, most preferably O; v is 0 or 1; and is 0 or 1; and W is an alkyl group, which may be saturated or unsaturated, preferably W has a formula C "H2n + ?, wherein n is from 10 to 100, preferably from 12 to 30, more preferably from 18 to 22, or W is a fluorinated hydrocarbon having a formula CmHaF2m +? ~ a, in which a is 0 to 2m and m is 4 to 50, preferably from 6 to 30, more preferably from 8 to 20, in wherein the alkyl group or the fluorinated hydrocarbon may contain oxygen atoms in a skeleton of an alkyl group or the fluorinated hydrocarbon, respectively, in an amount ranging from 1 to 1/2, the total number of carbon atoms present in the group alkyl or hydrocarbon, that is, 1 an / 2 in the case of CnH2n +? or l a m / 2 in the case of CmHaF2m +? - a; W- (A) t-D V wherein D is a monovalent radical, including any of: -OH, -C (0) NR 1153nR1'6.

OC (O) C (CH2-C02H) 2 (OH), (-OOCCH2) (H02C) C (OH) (CH2C02H), -NR12C (0) (CH2) 2C02H, -NR12C (0) (CH2) 3OH, -NHC (O) OR 17 NRiC (0) (CH2) 2C (0) -NR1'2, CIO) (CH = CH) C (O) OR > 1'7 where, if y is 1, OH is in an ortho position,, •? RuC (0) C (CH,),? HC (0) CH-CH, preferably D is C (0)? R15R16, OC (O) C (CH2-C02H) 2 (OH), or (H02C) C (OH) (CH2C02H) (CH2COO), more preferably D is C (0) → R15R16; R12 is a hydrogen or an alkyl group having from one to four carbon atoms, R13 and R14 are independently hydrogen, an alkyl group, preferably CnH2n + ?, where n is from 1 to 30, preferably from 1 to 10, more preferably from 1 to 2, or an aliphatic group, which are substituted or unsubstituted, for example, with an aromatic group, wherein the aliphatic group has 20 atoms or less and contains carbon and, optionally, nitrogen , oxygen, phosphorus, and / or sulfur in the aliphatic group or as a substituent for the aliphatic group; R15 and R16 are independently hydrogen or an alkyl group, preferably CnH2n +, wherein n is from 1: to 30, preferably from 1 to 10, most preferably from 1 to 2; R17 is hydrogen or an alkyl group, which may be saturated or unsaturated; preferably CnH2n *? or CnH2n, wherein n is from 1 to 30, more preferably from 1 to 18, more preferably from 1 to 10; R18 is hydrogen or CnH2n + ?, where n is from 1 to 8; E is independently COOH or COO ", wherein, when one or two COO" groups are present, a cation is present, preferably, a divalent cation, M +, is present when a COO group "is present and two M + are present. or V + when two COO groups are present "; if present, M + is independently Li +, K +, Na +, Rb Cs +, or N + (R ') 4, where R' is independently hydrogen or an unsubstituted or substituted alkyl group, preferably CH3, - CH2CH3, or CH2CH2OH; preferably M + is K + or Na +; if present, V2 + is independently Ca2t, Mg2 \ Ba2 +, Zn2 \ Sr2 +, Ti2 \ Fe2 +, Co2t, Ni2% Cu2 +, Ag2t, Cd? ' , Pb2 +, Sn2 +, Pd2 +, or Zr2 +, preferably Ca2 +, Mg2 +, or Zn2f; Q is 0 or NH; R is an alkyl group, preferably CnH2nu, wherein n is 1 to 30, preferably 1 to 10, more preferably 1 to 2; and it is 1 to 3; f is 1 or 2; g is 1 to 6; k is 0 or 1; A is an aliphatic linking group (including a linear, branched and cycloaliphatic group) or divalent aromatic having 20 atoms or less, and containing carbon, and optionally, nitrogen, oxygen, phosphorus, and / or sulfur in the aliphatic or aromatic group or as a substituent of the aliphatic or aromatic group, with the proviso that when D is OH, NOO, or NHC (0) NH2, the atom of A close to D is a carbon atom, where t = 1, preferably A is C (-O), C (= 0) CH2, NHC (= 0), OC (= 0), OCH2, OCH2CH2, or OCH (CH3) CH2; t is 0 or 1, preferably 0; and W is an alkyl group, which may be saturated or unsaturated, preferably W has a formula CnH2n.?, wherein n is from 10 to 100, preferably from 12 to 30, most preferably from 18 to 22, or W is a fluorinated hydrocarbon having a formula CmHaF2mtl-a, wherein a is 0 to 2m and m is 4 to 50, preferably from 6 to 30, more preferably from 8 to 20, wherein the The alkyl group or the fluorinated hydrocarbon may contain oxygen atoms in a skeleton of an alkyl group or the fluorinated hydrocarbon, respectively, in an amount ranging from 1 to 1/2, the total number of carbon atoms present in the group "alkyl" or the hydrocarbon, ie, 1 an / 2 in the case of CnH2n +? olam / 2 in the case of CmHaF2m +? _ a; J is 0, NH, or an aliphatic linking group (including linear, branched and cycloaliphatic) or divalent aromatic having 20 atoms or less, and containing carbon, and optionally, nitrogen, oxygen, phosphorus, and / or sulfur in the aliphatic or aromatic group or as a substituent of the aliphatic or aromatic group, with the proviso that, when J is a divalent aliphatic group or a linking aromatic group, the linking group is connected by the carbon atom to C of formula VI; v is 0 or 1; preferably 0; and W is an alkyl group, which may be saturated or unsaturated, preferably W has a formula CnH? n,?, wherein n is from 10 to 100, preferably from 12 to 30, preferably from 18 to 22, or W is a fluorinated hydrocarbon having a formula CmHaF2m +? - a / in which a is 0 to 2m and m is 4 to 50, preferably from 6 to 30, so - "more preferable from 8 to 20, wherein the alkyl group or the fluorinated hydrocarbon may contain oxygen atoms in a skeleton of an alkyl group or the fluorinated hydrocarbon, respectively, in an amount ranging from 1 to 1/2, the total number of atoms of carbon present in the alkyl or hydrocarbon group, ie, 1 an / 2 in the case of C "H2n +? olam / 2 in the case of CmHaF2m +? - a; J is O, NH, or an aliphatic linking group (including a linear, branched and cycloaliphatic) or divalent aromatic having 20 atoms or less, and containing carbon, and optionally, nitrogen, oxygen, phosphorus, and / or sulfur in the aliphatic or aromatic group or as a substituent of the aliphatic or aromatic group, preferably J is O, NH, C (= 0) CH2, 0CH20, 0CH2CH20, OCH (CH3) CH20, 0CH2, OCH2CH2, or 0CH (CH3) CH2 , more preferably O; n is an integer that ranges from 1 to 5, preferably 1; wherein, when n = 1, a double bond may be present in the ring (i.e., (CH2)? -CH »becomes CH = C) and when n = 2 to 5, one or two may be present double bonds in the ring (that is, either two (one double bond) or four hydrogen atoms (two double bonds) omitted from what would be described in formula-VII without unsaturation); v is 0 or 1, preferably 0; and W is an alkyl group, which may be saturated or unsaturated, preferably W has a formula CnH2nn, wherein n is from 10 to 100, preferably from 12 to 30, most preferably from 18 to 22, or W is a fluorinated hydrocarbon having a formula CmHaF2m +? - a, in which a is 0 to 2m and m is 4 to 50, preferably from 6 to 30, more preferably from 8 to 20, wherein the group alkyl or the fluorinated hydrocarbon can contain oxygen atoms in a skeleton of an alkyl group or the fluorinated hydrocarbon, respectively, in an amount ranging from 1 to 1/2, the total number of carbon atoms present in the alkyl group or the hydrocarbon, ie, 1 an / 2 in the case of CnH2n + 1 olm / 2 in the case of CmHaF2m +? - a; wherein X is O, S, NH, or an aliphatic linking group (including a linear, branched and cycloaliphatic) or divalent aromatic having 20 atoms or less, and containing carbon, and optionally, nitrogen, oxygen, phosphorus, and / or sulfur in the aliphatic or aromatic group or as a substituent of the aliphatic or aromatic group, X is preferably O or NH, more preferably O; p is 0 or 1; and W is an alkyl group, which may be saturated or unsaturated, preferably W has a formula CnH2nn, wherein n is from 10 to 100, preferably from 12 to 30, most preferably from 18 to 22, or W is a fluorinated hydrocarbon having a formula CmHaF2m +? - a, in which a is 0 to 2m and m is 4 to 50, preferably from 6 to 30, more preferably from 8 to 20, wherein the group alkyl or the fluorinated hydrocarbon may contain oxygen atoms in a skeleton of an alkyl group or the fluorinated hydrocarbon, respectively, in an amount ranging from 1 to 1/2, the total number of carbon atoms present in the alkyl group or the hydrocarbon, that is, from 1 to n / 2 in the case of CnH2n +? or l a m / 2 in the case of CmHaF2m + 1-a. • In any of the formulas of the present invention, wherein a salt forms and a compound of one of the formulas has a negative accumulative charge without * any of the corresponding cations, a corresponding cation or cations are present, so that his or her cumulative positive charges equal the cumulative negative charge of the compound of the formula. The cation or cations are not limited to M + and V2 + as described above. In other words, a cation or combination of cations may be present so that their cumulative positive charges equal the cumulative negative charges of the compound of the formula. For example, a metal cation or quaternary ammonium cation, tertiary ammonium, secondary ammonium, or primary ammonium with a positive charge equal to the cumulative negative charge of the compound of the formula can be present instead of M + and V2 +; alternatively, those cations may be present in addition to M + and V2 +, so that the cumulative positive charge of all cations is equal to the cumulative negative charge of the compound of the formula. This is also true for mixtures of compounds of the formula of the present invention. The selection and location of an anti-caking component of the present invention will depend, in part, on the desired abrasion application. For example, a disc sanding or sheet sanding, which are typically used with hand tools for sanding paints, the anti-caking component may be placed on the peripheral portion of the coated abrasive article, preferably a coating of superaprests or coating of abrasive. In this application, the anti-caking component of the present invention preferably is any of the octadecyl borate, octadecyl borate potassium, octadecyl dimethyl borate, docosyl borate, docosyl borate potassium, phosphate. of octadecyldimethylhydroxyammonium, octadecyl-dimethylhydroxyammonium phosphite, docosyldimethylhydroxy onium phosphate, docosyldimethylhydroxyammonium phosphite, potassium octadecyl phosphate, potassium docosyl phosphate, sodium octadecyl phosphate, sodium docosyl phosphate, potassium hexadecyl phosphate, potassium octadecyl phosphonate, tetradecyl phosphonate e potassium, octadecyl sulfonate hatred, sodium octadecyl sulfate, sodium docosyl sulfonate, sodium docosyl sulfate, octacosanoic acid, hexacosanoic acid, octadecyl urea, stearyl citrate, stearic anhydride, docosanoic anhydride, octacosanoic anhydride, octadecyl succinic anhydride, docosyl succinic anhydride, octadecyl-glutaric anhydride , docosyl glutaric anhydride, maleic octadecyl anhydride, docosyl maleic anhydride, hexadecyl phthalic anhydride, octadecyl phthalic anhydride, and docosyl phthalic anhydride. In this application, the anticaking component is most preferably any of the octadecyl borate of potassium, docosyl borate of potassium, phosphate of * "docosyldimethylhydroxyammonium, phosphite of docosyldimethylhydroxyammonium, octadecyl phosphate of potassium, docosyl phosphate of potassium, docosyl sulfonate of sodium, sodium docosyl sulfate, octacosanoic acid, stearyl citrate, docosanoic anhydride, docosyl succinic anhydride, docosyl glutaric anhydride, and docosyl phthalic anhydride A second abrasion application is the wood band sanding or wood-like substrates, for example, In this application, if it is preferred to place the anti-caking component of the present invention with a binder of a sizing coating of the coated abrasive article, which may not have a supersize coating. , the anti-fouling component of the present invention is preferably any 2- (li idazolidinonyl) ethyl oleate, 2- (1-pyrrolidinonyl) ethyl oleate, 2- (1-imidazolidinonyl) ethyl-N-stearyl carbamate, N-oleoylsuccinnamic acid, N-stearylsuccinic acid, N, N -distearylurea, N- (hydroxyethyl) -N-stearylurea, N, N-bis (hydroxyethyl) -N-stearylurea, N- (2- (hydroxyethyl) -aminoethyl) -N-stearyl urea, N-octadecyl-4-hydroxybutanamide , N-oleyl-4-hydroxybutanamide, N- (3-aminomethyl) phenylmethyl-N-stearyl urea, oleyl N-stearyl carbamate, N-oleyl-N-stearyl urea, N-oleylmalemalemic acid, oleyl amine, N -tris (hydroxymethyl) ethyl-N-stearyl urea, stearyl 4 '' hydroxybenzoate, oleyl 4-hydroxybenzoate, 3-pentadecylphenol, 3- (2-hydroxyphenyl) -N-stearylpropanamide, N- (4-hydroxyphenyl) -N-stearyl urea, (2-hydroxyphenyl) ethyl N-stearyl carbamate, 2- (N-ethylperfluorooctansulfonamide) ethyl acrylate, stearyl acrylate, stearyl amine, ethoxylated oleic acid, N- (hydroxymethyl) octadecanamide, 2-hydroxy-N- octadecylbenzamide, N- ((N '-octadecyl) -2, 2-dimethyl-acetamidoyl) acrylamide, N-2- (2'-hydroxybenzoyl) ethyl-N-ethyl perfluorooctylsulfonamide, N- (octadecyl) phthalimide, N- (l '- (2'-heptadecyl) i idazoyl) propyl) octadecanamide, N- (1' - (imidazoyl) propyl) octadecanamide, N- (1 '- (imidazoyl) propyl ) -N'-octadecyl urea, N- (octadecyl) maleamic acid, 2-carboxy-N- (octadecyl) benzamide, 4-carboxy-N- (octadecyl) phthalimide, N- (2- (1'-pyrrolidinonyl carbamate ethyl) -N '-octadecyl, and N- (2- (1'-orpholinoyl) ethyl) -N'-octactacyl carbamate. The description of the selection and location of the antifog component of the present invention is simply representative and the present invention is not limited thereto.

Various other selections and locations of an anti-cache component of the present invention can be used.

Anti-fouling Component in a Binder System of an Abrasive Article As described herein, an anti-fouling component of the present invention may be present in a binder of an abrasive article It is within the scope of the present invention to incorporate the anti-fouling component in a binder where initially during the abrasion of the anti-fouling component is not exposed to the workpiece, however, at some point during the abrasion, the anti-fouling component is exposed to and comes into contact with the workpiece. find a peripheral portion of the abrasive article capable of coming into contact with a workpiece at the beginning of the abrasion process.Thus, preferably, an anti-caking component is present in a size coating (traditionally work / sizing construction) ), a work lining (if sizing is not present), a covering abrasive (loose abrasive article), or an abrasive composition (structured abrasive article) of various coated abrasive articles or a binder of an agglomerated or non-woven abrasive article, all of which have been described herein. The amount of the anti-fouling component in a binder of an abrasive article generally ranges from about 1 to 95% by weight, typically from 1 to 75%, preferably from 1 to 50%, based on the total dry weight of the binder and any additives optional, that is, the binder composition. Next, a method for providing the component in a binder of an abrasive article is described.

Component Anticarga in a Peripheral Coating It can also. an anti-caking component is present in a peripheral coating if such a coating is present in an abrasive article. In this way, the peripheral coating may be present on a sizing coating, if a working coating and a sizing coating are present; on an abrasive coating; on abrasive compositions; or on binders of a non-woven or agglomerated abrasive article.

A peripheral coating is prepared from a peripheral composition comprising an anti-caking component of the present invention. The peripheral composition may contain 100% by weight of anti-caking component, anti-caking component and a binder precursor, or anti-caking component and > a liquid medium. Generally, "the amount of the anti-fouling component in a peripheral coating ranges from about 10 to 100% by weight, typically from 50 to 100%, preferably from 75 to 100%, and most preferably from 95 to 100% , based on the dry weight of the peripheral coating • Of course, any modality may also contain optional additives such as surfactants, plasticizers, antistatic agents, wetting agents, antifoaming agents, dyes, pigments and fillers.The typical examples of fillers are talc, silica, silicates and metal carbonates These additives may be present in an amount to provide the desired benefit of the additive and should not affect the charging properties achieved by the present invention. The peripheral coating may comprise, in addition to the anti-fouling component of the present invention. the present invention, an additional conventional anti-fouling component, examples of antica components conventional rga include metal salts of fatty acids, for example zinc stearate, calcium stearate and nickel stearate; waxes, graphite and the like.

Method of Applying an Antisargue Component When a binder system of an abrasive article is present, an anti-caking component of the present invention can be combined with a binder precursor (e.g., a working coating precursor (if the coating is not present). sizing) or a sizing coat binder precursor), provided that the binder, formed from the binder precursor, "finally comes into contact with the workpiece during abrasion." The combination can then be applied by any suitable coating techniques, eg, roller coating, coating. by spray, knife coating, hot melt coating, curtain coating and the like, the binder precursor is then cured or solidified in the manner described herein for the preparation of an abrasive article. Anti-caking component in a peripheral coating In this embodiment, a peripheral composition comprising the anti-caking component was prepared The peripheral composition can also include a liquid medium such as water or an organic solvent or a binder precursor.

In general, a peripheral composition comprising water or organic solvent may comprise from about 1 to about 100% by weight, preferably from 10 to 60% by weight, more preferably from 15 to 40% by weight, anti-locust component, and about 0 to about 99% by weight of water or organic solvent, preferably 40 to 90% by weight, more preferably 60 to 85% by weight, based on wet weight. When the peripheral composition comprises a binder precursor, the peripheral composition may comprise from about 80 to about 99% by weight, preferably from 90 to 99% by weight, more preferably from 95 to 99% by weight, of the anti-caking component, from about 1 to about 20% by weight of the binder precursor, preferably from 1 to 10% by weight, more preferably from 1 to 5% by weight, based on the dry weight. The peripheral composition may be free of liquid or free of binder precursor. The terms "liquid-free" or "binder precursor-free" as used herein refer to less than 1% by weight of liquid medium or binder precursor, respectively, that is, an anti-fouling component system essentially of 100% , with the exception that optional additives may be included. A method of applying a peripheral composition comprising 100% anti-locust component (or anti-locust component plus optional additives) which is free of liquid and free of binder precursor includes melting the composition to form a hot melt composition, coating the composition , for example, by spray coating and cooling to room temperature (approximately 25 ° C) for 5 to 10 minutes. Alternatively, a peripheral composition comprising "* 100% anti-caking component * (or anti-caking component plus optional additives) can be applied by extrusion coating wherein the temperature of the extruder melts the peripheral composition and then a matrix coater is used to Apply the peripheral composition The peripheral composition is then cooled to room temperature (approximately 25 ° C) for 5 to 10 minutes If it is desired to add a binder precursor, the anti-looser component should be combined with a binder precursor to form a peripheral composition and applied in a generally used form for applying the binder precursors, for example, by roll coating, curtain coating, matrix coating, spray coating and the like and curing in a generally used way to apply the binder precursors, for example, heat, radiation and sim Typically, in this embodiment, the anti-caking component can be first combined with a liquid medium that includes water or an organic solvent before the combination with the binder precursor. Suitable binder precursors include phenolic resins, aminoplast resins having pendant α, β-unsaturated carbonyl groups, urethane resins, epoxy resins, urea-formaldehyde resins, isocyanurate resins, melamine-formaldehyde resins, acrylate resins , acrylated isocyanurate resins, acrylated urethane resins, acrylated epoxy resins, bismaleimide resins, hidden cement, cellulose compounds, latex (for example polyacrylonitrile-butadiene rubber latex), styrenated acrylic emulsion polymers, casein, soy proteins, soy alginate, polyvinyl alcohol, polyvinyl acetate, polyacrylester, and polyethylene vinylacetate, polystyrene-butadiene, and mixtures thereof A preferred binder precursor is a styrenated acrylic emulsion polymer, which is found commercially available from SC Johnson Polymer, Racine, Wisconsin, under the trade designation "Joncryl 190 8. In general, the amount of binder precursor ranges from 0.1 to 90% by weight, preferably from 0.1 to 75% by weight, more preferably from 0.1 to 50% by weight, based on the weight of the binder precursor composition or the peripheral composition. In another embodiment, an anti-caking component of the present invention can be combined with a liquid medium including water and organic solvents to form a peripheral composition. The anti-caking component can form a solution with the liquid medium or can exist with a dispersion of the liquid medium. A preferred application comprises, as a peripheral composition, the anti-caking component dispersion in water, preferably deionized water, or THF. . The liquid medium is generally present in an amount ranging from about 0 to about 99% by weight, preferably from 40 to 90% by weight, more preferably from 60 to 85% by weight, based on the total weight of the liquid. the peripheral composition. The peripheral composition comprising an anti-locust component and liquid medium can be applied by brushing or coating the composition on an abrasive article, for example, by roller coating, curtain coating, matrix coating, spray coating and the like and then solidifying. , for example, drying, at a temperature that depends on whether the liquid medium is present, the liquid medium selected and the amount of liquid medium. For example, the temperature generally ranges from about 20 to 120 ° C, typically 60-120 ° C, preferably 80-100 ° C, for a period of time that generally ranges from about 3 minutes to 30 hours, typically around from 5 minutes to 10 hours, preferably from 10 minutes to 2 hours. In most cases, the peripheral composition is dried in a drying oven. If a binder precursor is present, the steps used can be used. for curing or solidifying a binder precursor used to form the other parts of an abrasive article, for example, a sizing coat binder precursor. For example, after a peripheral composition comprising an anti-caking component and a binder precursor is applied, for example, by roller coating, curtain coating, matrix coating, spray coating and the like, the peripheral composition can be solidified or cured by an energy source, for example, heat or radiation. Suitable organic solvents include tetrahydrofuran, acetone, methyl ethyl ketone, toluene, methyl isobutyl ketone, ethanol, isopropanol, methanol, glycol ethers, and the like.

The weight of the dry coating of the peripheral coating in any mode depends on the degree of the coated abrasive, ie the particle size of the abrasive particle. Typically, the fatter or larger the abrasive particle, the greater the weight of the coating. For a given degree, if the weight of the coating is too high, the abrasive particles can be hidden by the peripheral coating. If the weight of the coating is too low, then the optimum operation of the resulting abrasive article can be achieved. For example, as a guide, a coating weight of about 4 to about 12 g / m 2 may be used with P400 grade abrasive particles; A coating weight of about 5 to about 15 g / m 2 with grade P320V abrasive particles can be used; a coating weight of about 7 to about 25 g / m 2 can be used with P180 grade abrasive particles; and a coating weight of about 9 to about 30 g / m 2 may be used with P120 grade abrasive particles.

All of Use of Abrasive Articles An abrasive article of the present invention can be used to abrade various work pieces or substrates including wood; materials similar to wood such as boards made of wood fiber and boards made of wood particles; fiberglass; varnishes; polyester lining; stained surfaces; automotive body fillers; ceramics; glass; 5 paint including latex paint, oil paint and automotive paint; primers including oil-based primers, water-based primers, and automotive liner primers; and metals including aluminum, stainless steel and mild steel. As used herein, the term "abrasion" refers to grinding, polishing, surface removal, finishing. surface and "like." A method of abrading a workpiece includes contacting the workpiece with a portion 5 or peripheral surface of an abrasive article with sufficient force (typically greater than about 0.02 • g / cm2). to abrade the workpiece while the peripheral portion or workpiece and the workpiece move in mutual relation.Any of the workpiece or the abrasive article can be stationary.As described herein, a coated abrasive can be form of a band, disc, sheet or similar. -. embodiments in which the abrasive article is a continuous abrasive belt, the choice of the contact wheel, the force employed and the speed of the abrasive belt depend on the desired cutting speed and the termination of the resulting surface on the workpiece , care must be taken not to damage the work piece. The contact wheel can be flat or sawn. The force between the abrasive article and the work force can range from 0.02 kg / cm to 60 kg / cm, typically and preferably from about 0.04 kg / cm to about 40 kg / cm. The belt speed can range from 300 meters per minute (m / min) to 3, 100 m / min, more typically and preferably from about 900 m / min to about 2,200 m / min.

EXAMPLES TEST METHODS Schiefer test This test provides a measure of the cut (material removed from a workpiece) of coated abrasive articles under dry conditions (approximately 22 ° C and a Relative Humidity of approximately 45%). A 10.2 cm diameter circular disc was cut from the tested abrasive material and secured by a double pressure sensitive adhesive tape (commercially available from Minnesota Mining and Manufacturing Company, St.

Paul, MN, under the trade designation "Industrial Tape 3M # 442") to a support pad. The support pad was secured to the drive plate of a Schiefer Abrasion Tester (available from Frazier Precision Company, Gaithersburg, Maryland). Duty-shaped cellulose acetate butyrate polymer workpieces were used, with an external diameter of 10.2 cm, an internal diameter of 5.24 cm, a thickness of 1.27 cm, available from Seelye Plastics, Minneapolis, MN. The initial weight of each work piece was recorded with a milligram accuracy before being mounted on the work piece fastener of the abrasion tester. A weight of 4.5 kg was placed on the platform of the weight of the abrasion tester and the mounted abrasive specimen was lowered onto the work piece and the machine was turned on. The machine was calibrated to run for 500 cycles and then stopped automatically. After every 500 cycles of the test, the work piece was cleaned to free it of debris and weighed. The cumulative cut for each 500-cycle test was the difference between the initial weight before each 500 cycles and the weight after each 500 cycles. The final point of the test was 2,000 cycles.

\ Dual Action Sanding Test (DA) / Hands Free Abrasion Test A paint panel, ie a steel substrate with a coating, primer, base coat and clear coat typically used in paints, was abraded. automotive in each case with coated abrasives made according to the invention and with the coated abrasives of the comparative examples. Each coated abrasive had a diameter of 15.2 cm and was attached to a random orbital sander (available under the trade designation "DAQ" from National Detroit, Inc., Rockford, IL) The abrasion pressure was approximately 0.2. kg / cm2, while the sander operated at approximately 60 PSI @ TOOL (413 kPa) Painted panels were obtained from ACT Company of Hillsdale, Michigan The cut was calculated in grams in each case by weighing the substrate coated with primer. of subjecting to abrasion and after abrasion for a predetermined time, for example, of 1 or 3 minutes.

PROOF OF NORMAL FORCE OF WOOD SANDING Frequently the loading or soiling with wood sawdust occurs during the sanding of the wood with an abrasive band, which subsequently leads to the ignition of the wood sawdust on the abrasive surface of the band as well as the ignition on the sanding path of the wood. the wooden workpiece adjacent to the ignition on the abrasive surface of the band. Ignition of the surface of the wood workpiece is not an aesthetically desirable result since it is counterproductive to provide an attractive wood surface. In addition, the ignition of the wood sawdust loaded on the abrasive surface of the belt surface makes the abrasive belt less useful and, during the experimental test, is usually referred to as a final-experimental point. The anti-caking sizing components of the present invention are designed to prevent or minimize or retard loading with wood sawdust. To determine the anti-loam properties in the sanding context, a Normal Wood Sanding Force Test was conducted with a wood or wood-like substrate. The coated abrasives described in the section 'for Examples 30 to 33 and Comparative Example I were converted to continuous webs of 168 cm by 7.6 cm and were installed on an oscillating bed grinding machine available from ELB Grinders Corp., Mountainside, NJ, under the trade designation of "LB type SPA 2030ND." The effective cutting area of the abrasive belt was 7.6 cm by 168 cm The work piece subjected to abrasion by these bands was a board made of wood particles from those dimensions: 1.6 cm wide by 38 cm long by 28 cm high.The abrasion was conducted along the edge of 1.6 cm by 38 cm.The board work piece made of wood particles was mounted on a table The speed of the abrasive belt was 1.525 rpm The speed of the table, at which the workpiece was moved, was 12.2 meters per minute The feed increments down the abrasive belt varied from 0 .25 to 2.0 mm / step of the work piece and many times the increase of the down feed was increased ** 'after each 12.2 cm of board made of sawn wood particles until the band failed due to the load that precedes ignition of loaded wood sawdust. The process used was the conventional surface rectification where the work piece was oscillated below the rotating abrasive belt with increasing downward feed between each step. This rectification was carried out dry. The normal force (Fn) was verified near the end of each 12.2 cm segment of board made of wood particles and sanding. As the sanding proceeds, the normal force increases. In general, the lower the normal force, the better the operation of the band in the sanding of the work piece. The load by fouling with wood sawdust leads to higher normal forces and eventually the ignition of both the wood sawdust loaded and the workpiece which becomes the end point of "IGNITION". The total amount of board cut made of wood particles was reported for each example that is rated abrasive.

MATERIALS The following materials were used in the examples (the trademarks indicate commercial designations): Table 1 Table 1 (Continued) Table 1 (Continued) erivated from an octadecyl diacid phosphate commercially available from Rhone-Poulenc, Cranbury, NJ, under the trade designation DV4771"Derivative of a duodecyl diacid phosphate commercially available from Rhone-Poulenc, Cranbury, NJ, under the trade designation" DV3999"Derived from an octadecyl diacid phosphate commercially available from Harcos Chemicals, Inc., Kansas City, KS, under the trade designation" T-Mulz 717-95"* The description of the preparation is provided below.

Preparations Preparation 1; Octadecyl acid phosphate monopotassium salt derived from "DV 771" Octadecyl phosphate ester, "DV4771", (0.57 Kg) of Rhone-Poulenc ("THF") (4L) was dissolved in a stainless steel beaker. 6L equipped with a mechanical agitator. The stainless steel beaker was in a temperature controlled water bath. Dissolution of DV4771 in THF was accelerated by raising the temperature to 45 ° C. After the DV4771 was dissolved, the temperature was allowed to fall back to room temperature. While the solution was stirred, KOH (IN in methanol, 1500 ml) was slowly added over 1 hour from a dropping funnel. The final pH was between 5.5 and 6 after neutralization. The white precipitate was filtered with a filtration funnel under reduced pressure and then washed once with 500 ml of THF and then washed twice with one liter of water. The wet white cake on the filter paper was dispersed in water (to carry 10% to 20% solids) in a 6L stainless steel beaker by means of a mechanical stirrer. A white dispersion was obtained.

Preparation 2 Duodecyl acid phosphate monopotassium salt derived from "DV3999" The preparation was the same as Preparation 1 above except that "DV3999" (0.42 Kg) replaced "DV4771".

Preparation 3 Monosodium octadecyl acid phosphate salt derived from "DV4771" The preparation was the same as Preparation 1 above except that the NaOH (64g solid) replaced the KOH solution.

Preparation 4 Octadecyl acid phosphate monopotassium salt derived from "T-Mulz 717-95" The preparation was the same as Preparation 1 above except that "T-Mulz 717-95" (0.57 Kg) replaced "DV4771".

EXAMPLES Preparation of Examples 1 to 30 Representative coated abrasive articles of the present invention were prepared by applying an anti-caking coating to a coated abrasive disk, which lacked a super-charged coating, which is commercially available from Minnesota Mining and Manufacturing Company, St. , Paul, MN, under the trade designation "3M 210U Production A weight paper". The anti-fouling component, the weight of the dry coating of the coating containing the anti-fouling component, the size of the disc, the commercial designation of the commercially available coated abrasive disc, and the mineral grade of each example are indicated in Table 2. Examples 1 to 20 were dissolved in THG solvent (15% solution) and applied to the abrasive disk coated by gravity. The discs were then cured at 90 ° C for 20 minutes. The anti-caking coatings of Examples 21 to 29 were combined with water (10% solution) and applied with a brush. The discs were air-dried at room temperature (approximately 25 ° C) Table 2 Preparation of Comparative Examples Comparative Example A was commercially available from the Minnesota Mining and Manufacturing Company, St. Paul, MN, under the trade designation "3M 210U Production A weight paper". Comparative Examples B, F and H were prepared by applying calcium stearate as a dispersion in water (50% solution), with a paintbrush applied to a commercially available coated abrasive product from Minnesota Mining and Manufacturing Company, St. Paul, MN, under the trade designation "3M 210U Production A weight paper", and then dried at 88 ° C for 15 minutes. minutes The calcium stearate coating was similar to the calcium stearate coating of the commercially available coated abrasive product from Minnesota Mining and Manufacturing Company, St. Paul, MN, under the trade designation "3M 210U Production Fre-Cut A weight paper". Comparative Example D was prepared by applying a plasticized phenolic working coating precursor to a heavy paper support A, then applying molten alumina particles having a degree of P'400, partially curing, followed by the application of a precursor of urea-formaldehyde sizing coating and then curing, and then coating the sizing coating with calcium stearate and drying as described for Comparative Examples B, F, and H.

TABLE 3 Examples 1 to 20 and Comparative Examples A and B Examples 1 to 20 and Comparative Examples A and B were tested according to the Schiefer test. Three discs were tested for each example and were determined at the average cut every 500 cycles up to and including 2000 cycles. The results are shown in Table 4. 'Table 4 Table 4 (Continued) Ex.19 n-C17H35 citrate 1,225 2.25 3.239 4.067 211 Ex.20 two urea 1.113 2.025 2.908 3.485 181 2.5 ': The loading scale is from 1 to 5. 1 is the best within the limited load and 5 is the worst with excessive load visually observed; Extensive loading usually increases the weight of the tested abrasive article.

-Examples 21 to 24 and Comparative Examples B, D, F, and H Examples 21 to 24 and Comparative Examples B, -, D, F, and H were tested according to the Schiefer test. Three discs were tested for each example and the average cut was determined after 2000 cycles. The results are shown in Table 5.

Table 5 N.D. = or atos were generated for this comparison Examples 25 to 29 and Comparative Examples D, F, and H Examples 25 to 29 and Comparative Examples D, F, and H were evaluated by means of the DA Sanding Test. He The sanding was conducted down in the coating e. Three discs were tested for each example and the average cut was determined after 3 minutes of sanding. The results are- > show in Table 6.

Table 6 N.D. = No data was generated for this comparison # This comparison was conducted twice Examples 30-33 and Comparative Example I Comparative Example I was commercially available from the Minnesota Mining and Manufacturing Company, St. Paul, MN, under the trade designation "Grade PlOO 3M 200D Three-M-Ite Resin Bond Cloth". Examples 30 to 33 were coated abrasives having a support of a woven cotton fabric of J weight available from Ernstmeier (Herford, Germany) with a weight of 265 g / m2, which were pre-treated by Ernstmeier to prepare the support to receive a work lining. A coatable mixture was prepared to produce a working coating for the support by mixing 69 parts of phenolic resin to 76% solids (48 parts of phenolic resin), 52 parts of non-agglomerated calcium carbonate filler (based on p.s. dry), and a solution of 90 parts of water / 10 parts of propylene glycol monomethyl ether to form a working coating which was 84% solids, with a wet coating weight of 71g / m2. The coating of work was applied in each case a coating with blade. Thereafter, PlOO grade aluminum oxide abrasive particles (average particle size of 150 micrometers of the ANSI B74.18 standard) were electrostatically coated onto the uncured working coating with a weight of 200 g / m2. Next, the resulting constructions received a 15 minute pre-cure at 65 ° C, followed by 75 minutes at 88 ° C. Next, a suitable phenolic resin mixture at 76% solids was applied to form a working coating (having a composition described in Table 7) on the construction of abrasive particles / working coating via a double roller coater . The weight of the wet sizing coating in each case was approximately 146 g / m2. In Examples 31 and 32, the wet sizing coating surfaces were exposed at 4.5 m / min to a bulb D of 118 watts / cm to initiate the reaction of the acrylates in those coating formulations. All Examples 30 to 33 then received a thermal cure of 30 minutes at 88 ° C followed by 12 hours at 100 ° C. The weights of the work coatings, sizing ore are listed in Table 8. After this thermal curing, the coated abrasives were simply bent (ie, passed over a roll at an angle to 90 ° to allow controlled cracking of work and sizing coatings), then they were converted into coated abrasive strips of 7.6 cm by 168 cm. Examples 30 to 33 were compared to Comparative Example I using the Normal Strength Test Procedure of the Board Made of ELB Wood Particles and the results are shown in Tables 9 to 11. The test conditions of the board made of particles of wood in Tables 9 to 11 use progressive sequences that evaluate the anticarrier durability of the surface of the abrasive belt. Sawdust powder loading leads to higher normal forces and, eventually, ignition of both the loaded wood sawdust and the workpiece. The normal force (Fn) is the penetrating force of the abrasive article on the workpiece, in this case, the particle board of wood. At lower Fn, the abrasive article "penetrates more effectively into the workpiece.When an abrasive article penetrates the workpiece more effectively, the grinding or polishing is more efficient.The descending feed sequences in the tables are as follows: Table 9 - 0.25mm / Step »0.5mm / Step» 1, Omm / Step »; Table 10 - constant of 0.45mm / Step; and Table 11 - 0.5mm / Step »1. Omm / Step» 2. Omm / Step. Each condition of downward feeding was continued until 12.2cm (1.6cm x 38cm) was removed from the board made of wood particles during sanding over the narrow edge of the board made of wood particles or ignition occurs. The origin of the board made of wood particles and the characteristics vary in each of Tables 9 to 11 but the same board made of wood particles was used within each test represented by Tables 9 to 11. Examples 30 to 33 work longer before loading and ignition compared to Comparative Example I, which is believed that the anti-fouling additives used in Examples 30-33 work by reducing the wood sawdust load of the coated abrasives. Comparative Example I sands at higher normal forces than Examples 30 to 33 in Tables 9 to 11.

Table 7 - APPLIED COATING FORMULATIONS FOR EXAMPLES 30-33 Table 7 (Continued) Table 8 WEIGHT OF COATINGS FOR EXAMPLES 30 to 33 Table 9 BOARD MADE OF WOOD PARTICLES / NORMAL FORCE TEST IGNITION: occurred the ignition of the wood sawdust on the abrasive article and the ignition on the path of the sanding of the piece of work Table 10 BOARD MADE OF WOOD PARTICLES / NORMAL FORCE TEST IGNITION: occurred the ignition of sawing of abrasive article and the ignition on the sanding path of the work piece Table 11 BOARD MADE OF WOOD PARTICLES / NORMAL STRENGTH OF TEST IGNITION: the sawdust ignition occurred on the abrasive article and the ignition on the sanding path of the work piece. No data could be measured due to the previous ignition of the band.

It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention. Having described the invention as above, property is claimed as contained in the following:

Claims (10)

1. An abrasive article characterized in that it comprises: (a) a plurality of abrasive particles; (b) a binder wherein the. plurality of abrasive particles are secured; and '(c) an anti-fouling component of any of the formulas I to V or mixtures thereof: wherein R1 and R2 are independently OH, OR, O ", NH2, NHR, or N (R) 2, with the proviso that if both of R1 and R2 are O", then a cation is present; R is an alkyl; . X is O, S, NH, or an aliphatic linking group (including a linear, branched and cycloaliphatic) or divalent aromatic having 20 atoms or less and containing carbon and, optionally, nitrogen, oxygen, phosphorus, and / or sulfur in the aliphatic or aromatic group or as a substituent of the aliphatic group or aromatic; p is 0 or 1; and W is an alkyl group having the formula CnH2n + ?, wherein n is from 10 to 100, which may be saturated or unsaturated or is a fluorinated hydrocarbon having the formula C "ñaF mn.d, in which a is 0 to 2m and is 8 to 20, wherein the alkyl group or the fluorinated hydrocarbon may contain oxygen atoms in a skeleton of the alkyl group or the fluorinated hydrocarbon, respectively, in an amount ranging from 1 to 1/2, the number total carbon atoms present in the alkyl or hydrocarbon group; wherein R3 is OH; 'q is 0 or 1; Z "is a monovalent anion, r is 0 or 1, with the proviso that when q is 0, r is 0 and when q is 1, r is 1 and when q and r are 1, N contains a positive charge, R4 and R5 independently they are H or an alkyl group, A is an aliphatic (including a linear, branched and cycloaliphatic) or divalent aromatic linking group having 20 atoms or less and containing carbon and, optionally, nitrogen, oxygen, phosphorus, and / or sulfur in the aliphatic or aromatic group or as a substituent of the aliphatic or aromatic group, with the proviso that the linking group is connected by a carbon atom to the N of the formula II, t is 0 or 1, and W is an alkyl group having the formula CnH2n,?, in which n is from 10 to 100, which can be saturated or unsaturated or W is a fluorinated hydrocarbon having the formula CmHaH2m +? - a, where a is 0 to 2m and m is 8 to 20, wherein the alkyl group or the fluorinated hydrocarbon may contain oxygen atoms in a skeleton of the alkyl group or the fluorinated hydrocarbon, respectively, in an amount ranging from 1 to 1/2, the total number of carbon atoms "'* present in the alkyl group or the hydrocarbon; . ? P -R6 W¡ xs (P > p in which Rd y. R7 are independently O ", OH, OR, NH2, NHR, or N (R) 2, with the proviso that both of R6 and R7 can not be OH simultaneously or OR simultaneously, and one of R6.and R7 can not be OH when the other of R6 and R7 are OR, and with the proviso that if either or both of R6 and R7 are O ", a cation is present, so the cation is a monovalent cation, M if either of R6 or R7 is O ", and two monovalent cations, M +, or a divalent cation, V2 +, if R6 and R7 are both 0", if present, M + is independently Li +, K +, Na \ Rb 'or Cs *, if present , V2 + is Ca2 +, Mg2 ', Ba2, Zn2 +, Sr2 \ Ti2 \ Fe2 +, Co2 \ Ni \ Cu2 +, Ag2 +, Cd2 +, Pb2 +, Sn2 \ Pd2 \ or Zrt; R is an alkyl group; X is 0, S, NH, or an aliphatic linking group (including a linear, branched and cycloaliphatic) or divalent aromatic having 20 atoms or less and containing carbon and, optionally, nitrogen, oxygen, phosphorus, and / or sulfur in the aliphatic or aromatic group or as a substituent of the aliphatic group or aromatic; p is 0 or 1; and • - W is an alkyl group, which can be saturated or unsaturated or is a fluorinated hydrocarbon having the formula CmHaF2m +? - a, in which a is 0 to 2m and is 8 to 20, wherein the alkyl or The fluorinated hydrocarbon may contain oxygen atoms in a skeleton of the alkyl group or the fluorinated hydrocarbon, respectively, in an amount ranging from 1 to 1/2, the total number of carbon atoms present in the alkyl group or the hydrocarbon, with the condition that if W is a fluorinated hydrocarbon, then, if R6 or R7 is O ", then the other of R6 or R7 are not O" or OH; IV in which R8 is OH, OR, O ", NH2,? HR,? (R) 2,? (R9) (R10) (OR11),? (CH2CH3) CH2CH2OC (0) CH = CH2, or ? (CH2CH3) CH2CH2OC (0) « wherein, when R8 is 0, then a cation is present; R is an alkyl group; R9 is H, CH3, or CH2CH3; R10 is CH2 or CH2CH2; R11 is hydrogen or C (0) CH = CH2; J is O,? H, or an aliphatic linking group (including a linear, branched and cycloaliphatic) or divalent aromatic having 20 atoms or less and containing carbon and, optionally, nitrogen, oxygen, phosphorus, and / or sulfur in the aliphatic or aromatic group or as a substituent of the aliphatic group or aromatic; v is 0 or 1; and is 0 or 1; and W is an alkyl group having the formula CnH2n + ?, in which n is from 10 to 100, which may be saturated or unsaturated or W is a fluorinated hydrocarbon having the formula CmHaF2m +? - a, in which a is 0 to 2m and m is 8 to 20, wherein the alkyl group or the fluorinated hydrocarbon may contain oxygen atoms in a skeleton of the C-alkyl group of the fluorinated hydrocarbon, respectively, in an amount ranging from 1 to 1/2, the number total carbon atoms present in the alkyl or hydrocarbon group, with the proviso that in the compound of formula IV, if W is a fluorinated hydrocarbon, then RB is OR, N (R9) (R10) (0Rn), N (CH2CH3) CH2CH2OC (0) CH = CH2, or W- (A) t-D V wherein D is a monovalent radical, which includes any of: -OH, -N = C = 0, -C02H, -NR12C (0) NR13R14, -C (0) NR15R16, OC (O) C (CH2-C02H ) 2 (OH), (-00CCH2) (H02C) C (OH) (CH2C02H), • NRiC (0) (CH2) 2C02H, -NR1i2¿, C (0) (CH2) 3OH, -NHC (O) 0R > 1X7 - R "C (O) (CH2) 2C (0) OR> i17, -NR SL-2¿, C (0) (CH = CH) C (O) OR -117 -QC (0) C (Rl8) = CH2, in which, if y is 1, OH is in the ortho position, R is a hydrogen or an alkyl group having one to four carbon atoms, R13 and RX4 are independently hydrogen, an alkyl group, or an aliphatic group, which is substituted or unsubstituted, wherein the aliphatic group has 20 atoms carbon or less and contains carbon and, nitrogen, oxygen, phosphorus, and / or sulfur in the aliphatic group or as a substituent for the aliphatic group; R15 and R16 are independently hydrogen or an alkyl group; R17 is hydrogen or an alkyl group, which may * be saturated or unsaturated; R18 is hydrogen or CnH2n + i / in which n is from 1 to 8; E is independently COOH or COO ", wherein, when one or two COO" groups are present, a cation is present; Q is O or NH; R is an alkyl group; and is from 1 to 3; f is 1 or 2; g is from 1 to 6; k is 0 or 1; A is an aliphatic (including a linear, branched and cycloaliphatic) or divalent aromatic linking group having 20 atoms or less and containing carbon and, optionally, nitrogen, oxygen, phosphorus, and / or sulfur in the aliphatic or aromatic group or as a substituent of the aliphatic or aromatic group, with the proviso that when D is OH, N = C = 0, or NHC (0) NH2, the atom of A close to D is a carbon atom; t is 0 or 1; and W is an alkyl group having the formula C n H 2n + 1, wherein n is from 10 to 100, which may be saturated or unsaturated or is a fluorinated hydrocarbon having the formula CmHaF2m +? - a, in which is 0 to 2m and m is 8 to 20, wherein the alkyl group or the fluorinated hydrocarbon may contain oxygen atoms in a skeleton of the alkyl or fluorinated hydrocarbon group, respectively, in an amount ranging from 1 to 1/2, the total number of carbon atoms present in the alkyl or hydrocarbon group, with the proviso that if W is a fluorinated hydrocarbon, then D is not a carboxylic acid, a urea, an amide or a carbamate group.

2. The abrasive article according to claim 1, characterized in that the abrasive article is an agglomerated abrasive article, wherein the binder adheres the plurality of abrasive particles together.

3. The abrasive article according to claim 1, characterized in that the abrasive article is a coated abrasive article and further comprises a support having a larger surface on which the binder adheres the plurality of abrasive particles.

4. The abrasive article according to claim 1, characterized in that the abrasive article is a non-woven abrasive article and further comprises a non-woven, spongy, open substrate, over which the binder adheres the plurality of abrasive particles.

5. The abrasive article according to claim 3, characterized in that the binder is a sizing coating and the abrasive article further comprises a sizing coating, the anticaking component * is present in the sizing coating.

6. The abrasive article according to claim 3, characterized in that the binder is a working coating and the abrasive article further comprises a sizing coating and a peripheral coating, the anticaking component is present in the peripheral coating. The abrasive article according to claim 3, characterized in that the binder, the plurality of abrasive articles and the anti-fouling component are in an abrasive coating. The abrasive article according to claims 1 to 7, characterized in that the anti-caking component is selected from the group consisting of octadecyl borate, octadecyl borate potassium, octadecyldimethyl borate, docosyl borate, docosyl borate potassium, phosphate octadecyldimethylhydroxyammonium, octadecyldimethylhydroxyammonium phosphite, docosyl-di-ethylhydroxyammonium phosphate, docosyldimethylhydroxyammonium phosphite, potassium octadecyl phosphate, potassium docosyl phosphate, sodium cctadecyl phosphate, sodium docosyl phosphate, potassium hexadecyl phosphate, potassium octadecyl phosphonate, tetradecyl phosphonate potassium, sodium octadecyl sulfonate, sodium octadecyl sulfate, sodium docosyl sulfonate, sodium docosyl sulfate, octacosanoic acid, "hexacosanoic acid, octadecyl urea, stearyl citrate, 2- (1-imidazolidinonyl) ethyl oleate, 2- ( 1-pyrrolidinonyl) -ethyl, 2- (1-imidazolidinonyl) ethyl-N-stearyl carbamate, N-oleyl acid cystamic, N-stearylsuccinnamic acid, N, N-bis (hydroxyethyl) -N'-stearylurea, N-octadecyl-4-hydroxy-butanamide, N-oleyl-4-hydroxybutanamide, oleyl-N-stearyl carbamate, N-oleylmalemalemic acid , oleyl amine, stearyl 4-hydroxybenzoate, oleyl 4-hydroxybenzoate, 3-pentadecylphenol, 3- (2-hydroxyphenyl) -Ne-tearylpropanamide, (2-hydroxyphenyl) ethyl N-stearyl carbamate, 2- (N-ethylperfluorooctansulfonamide) acrylate ) ethyl, stearyl acrylate, stearyl amine, ethoxylated oleic acid, N- (hydroxymethyl) octadecanamide, 2-hydroxy-N-octadecylbenzamide, 2-acrylamido-2-methyl-N (octadecyl) propanamide, N-2- (2'- hydroxyEenzoyl) ethyl-N-ethyl perfluorooctylsulfonamide, N- (l- (2'-heptadecyl) imidazoyl) propyl) octadecanamide, N- (l- (imidazoyl) propyl) octadecanamide, N- (1 '- (imidazoyl) propyl ) - N'-octadecyl urea, N- (octadecyl) maleamic acid, 2-carboxy-N- (octadecyl) benzamide, 4-carboxy-N- (octadecyl) phthalimide, N- (2- (1'-pyrrolidinonyl carbamate ) ethyl) -N '-octadecyl, and N- (2- (1'-morpholinoyl) ethyl) -N '-octadecyl carbamate. 9. A method for marking an abrasive article, characterized in that it comprises: (a) providing a support having at least one larger surface; (b) applying a working coat binder precursor on at least one larger surface of the support; (c) include a plurality of abrasive particles in and / or on the precursor of the coating binder of _job; (d) curing or at least partially solidifying the precursor of the working coating binder to form a working coating; (e) applying a sizing coat binder precursor composition on the working coating and the plurality of abrasive particles, the sizing coat binder precursor composition comprises a sizing coat binder precursor; and (f) curing or solidifying the sizing coat binder precursor to form a sizing coat; whereby an antifreeze component of any of the formulas I to V as defined in claim 1 or mixtures thereof is present in a part of the coated abrasive article, which, finally, comes into contact with a workpiece during the abrasion. 10. The method of compliance with the claim 9, characterized in that it further comprises the steps of: (g) applying a peripheral composition on at least one sizing coating portion, the peripheral composition comprising an anticaking component of any of the formulas I to V or mixtures thereof; and (h) solidifying the peripheral composition to form a peripheral coating.