With Synthetic Resin Patents (Class 51/298)
-
Patent number: 8545583Abstract: Flexible abrasive sheet articles having precision thickness flat-topped raised island structures that are coated with a monolayer of equal sized abrasive agglomerate are described. Methods of producing high quality equal-sized spherical shaped composite abrasive agglomerate beads containing small diamond abrasive particles are described. Beads are produced by level-filling fine mesh screens or perforated sheets with a water based metal oxide slurry containing abrasive particles and then using a fluid jet to eject the abrasive slurry lumps from the individual screen cells into a dehydrating environment. Surface tension forces form the ejected liquid lumps into spheres that are solidified and then heated in a furnace to form ceramic beads. These porous ceramic abrasive beads can be bonded directly onto the flat planar surface of a flexible backing material or they can be bonded onto raised island surfaces to form rectangular or disk abrasive sheet articles.Type: GrantFiled: January 5, 2005Date of Patent: October 1, 2013Inventor: Wayne O. Duescher
-
Patent number: 8545584Abstract: The invention relates to a structure based on glass fiber coated with a resin composition designed to reinforce bonded abrasive articles, the resin composition including the following constituents in the proportions indicated, expressed in percentage by weight of solid matter: 75 to 98% of a mixture of at least one novolac having a glass transition temperature lower than or equal to 60° C. and at least one novolac having a glass transition temperature above 60° C., 0.5 to 10% of at least one wax, 0 to 3.5% of at least one plasticizing agent.Type: GrantFiled: June 18, 2008Date of Patent: October 1, 2013Assignee: Saint-Gobain AdforsInventors: Alix Arnaud, Philippe Espiard, Claire Ceugniet
-
Publication number: 20130247477Abstract: A method of manufacturing polishing layers having a window for use in chemical mechanical polishing pads is provided, wherein a plurality of polishing layers having an integral window are derived from a cake, wherein the formation of density defects in the cake and the surface roughness of the polishing layers formed are minimized.Type: ApplicationFiled: March 22, 2012Publication date: September 26, 2013Applicant: Rohm and Haas Electronic Materials CMP Holdings, Inc.Inventors: Brian T. Cantrell, Kathleen McHugh, James T. Murnane, George H. McClain, Durron A. Hutt, Robert A. Brady, Christopher A. Young, Jeffrey Borcherdt Miller
-
Publication number: 20130247476Abstract: A method of manufacturing polishing layers for use in chemical mechanical polishing pads is provided, wherein a plurality of polishing layers are derived from a cake, wherein the formation of density defects in the cake and the surface roughness of the polishing layers formed are minimized.Type: ApplicationFiled: March 22, 2012Publication date: September 26, 2013Applicant: Rohm and Haas Electronic Materials CMP Holdings, Inc.Inventors: Brian T. Cantrell, Kathleen McHugh, James T. Murnane, George H. McClain, Durron A. Hutt, Robert A. Brady, Christopher A. Young, Jeffrey Borcherdt Miller
-
Patent number: 8540785Abstract: A bonded abrasive tool includes a bonded abrasive body having a bond matrix material including an organic bond material, abrasive grains contained within the bond matrix material, and chopped fiber bundles within the bond matrix material. The tool further has a porosity within the bonded abrasive body, wherein a majority of the porosity includes pores surrounding the chopped fiber bundles.Type: GrantFiled: August 8, 2012Date of Patent: September 24, 2013Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain AbrasifsInventors: Konstantin S. Zuyev, Walter Strandgaard, Joel A. Fife, Muthu Jeevanantham
-
Publication number: 20130244542Abstract: Abrasive articles including a body having a first abrasive layer, a second abrasive layer and one or more reinforcing layers for use with cordless tools have a reduced thickness with respect to conventional counterparts. Techniques for producing and using such abrasive articles are described. In one embodiment, the first abrasive layer and the second abrasive layer comprise abrasive particles in a bond material. In an embodiment, a reinforcing layer is disposed between the first abrasive layer and the second abrasive layer. In a particular embodiment, the body comprises an average thickness of not greater than about 5 mm. In another particular embodiment, the abrasive particles can comprise silicon carbide.Type: ApplicationFiled: March 1, 2013Publication date: September 19, 2013Inventors: Taeke Meerveld, Alessandro R. Milani, Marko W. Versteegen, Grzegorz Wojciechowski, Karolina Rozanska-Zaworska
-
Publication number: 20130244553Abstract: The invention relates to a replaceable fine machining membrane (19) for fixing on a tool head (1), to which pressure can be applied, of a stationary fine machining tool for fine machining a workpiece surface. A fine machining means substrate (27) is integrated in the fine machining membrane (19), said fine machining membrane (19) having a crosslinked elastomer (40) and said fine machining means substrate (27) being embedded in the crosslinked elastomer (40). The invention also relates to a method for producing such a fine machining membrane (19) and to a stationary fine machining tool with a tool head (1) to which pressure can be applied and which has a removable fixing means (31) for fixing such a replaceable fine machining membrane (19). Finally, the invention relates to a method for producing the novel fine machining membrane (19). The invention allows the precise reproducible fine machining of workpiece surfaces even with highly convex or freely shaped membranes (19).Type: ApplicationFiled: August 24, 2011Publication date: September 19, 2013Inventor: Roland Tuecks
-
Publication number: 20130244545Abstract: A polishing pad has a polishing layer including a non-foamed polyurethane, wherein the non-foamed polyurethane is a reaction cured body of a polyurethane raw material composition containing an isocyanate-terminated prepolymer obtained by reacting a prepolymer raw material composition containing a diisocyanate, a high-molecular-weight polyol and a low-molecular-weight polyol; an isocyanate modified body polymerized by adding three or more diisocyanates; and a chain extender, and the addition amount of the isocyanate-modified body is 5 to 30 parts by weight with respect to 100 parts by weight of the isocyanate-terminated prepolymer. The polishing pad hardly causes scratches on the surface of an object to be polished and has an improved dressing property.Type: ApplicationFiled: October 26, 2010Publication date: September 19, 2013Applicant: TOYO TIRE & RUBBER CO., LTD.Inventors: Yoshiyuki Nakai, Kazuyuki Ogawa, Kenji Nakamura
-
Publication number: 20130244548Abstract: An aspect of the present disclosure relates to a chemical mechanical planarization pad including a first domain and a second continuous domain wherein the first domain includes discrete elements regularly spaced within the second continuous domain. The pad may be formed by forming a plurality of openings for a first domain within a second continuous domain of the pad, wherein the openings are regularly spaced within the second domain, and forming the first domain within the plurality of openings in second continuous domain. In addition, the pad may be used in polishing a substrate with a polishing slurry.Type: ApplicationFiled: May 6, 2013Publication date: September 19, 2013Inventors: Paul LEFEVRE, Anoop MATHEW, Scott Xin QIAO, Guangwei WU, David Adam WELLS, Oscar K. HSU
-
Patent number: 8535119Abstract: A method of making shape memory chemical mechanical polishing pads is provided, wherein the shape memory chemical mechanical polishing pads comprise a polishing layer in a densified state. Also provided is a method for using the shape memory chemical mechanical polishing pads to polish substrates.Type: GrantFiled: June 12, 2012Date of Patent: September 17, 2013Assignee: Rohm and Haas Electronic Materials CMP Holdings, Inc.Inventors: Ravichandra V Palaparthi, Richard D Hreha, Benjamin John Vining
-
Publication number: 20130237136Abstract: The invention provides a polishing pad comprising an optically transmissive region, wherein the polishing pad comprises a polishing pad body comprising an opaque first region and an optically transmissive second region, wherein the second region has at least one recess formed therein of at least one part of the polishrag pad body, and at least one translucent window insert is integrated into the at least one recessed area. The polishing pad body and the at least one translucent window insert comprise different porous. materials.Type: ApplicationFiled: November 18, 2011Publication date: September 12, 2013Applicant: Cabot Microelectronics CorporationInventors: Kelly Newell, Abaneshwar Prasad
-
Publication number: 20130232884Abstract: The present invention provides process for the manufacture of an aqueous resin composition comprising a phenolic formaldehyde (PF) resin, which process comprises the steps of: providing a formaldehyde and phenolic compound, reacting said compounds in a condensation reaction in the presence of a catalyst, after completion of the condensation reaction to react with free formaldehyde, determining the free formaldehyde content of the resin composition, adding a pre-calculated substantially stoichiometric amount of modifying compound containing a primary amine group to reduce the amount of free formaldehyde in the resin composition to less than 0.1 wt % (relative to the total weight of the aqueous resin composition), and optionally distillation of the reaction product.Type: ApplicationFiled: September 30, 2011Publication date: September 12, 2013Applicant: Dynea Chemicals OyInventor: Armin Tumler
-
Publication number: 20130228160Abstract: The present invention relates to a method for production of photovoltaic wafers and abrasive slurries for multi-wire sawing of wafers for photovoltaic applications, and more specific to abrasive slurries which are easy to remove from the wafers after sawing, where the abrasive slurry comprises one part recycled abrasive slurry, an alkali in sufficient amount to provide a pH in the abrasive slurry mixture in the range from 6.0 to 9.0, and one part novel abrasive slurry in an amount sufficient to provide an ion content in the abrasive slurry mixture to provide an electric conductivity of less than 50 ?S/cm.Type: ApplicationFiled: October 5, 2011Publication date: September 5, 2013Applicant: REC WAFER PTE. LTD.Inventors: Mohan Menon, Anne Lohne, Erik Sauar, Stian Sannes
-
Patent number: 8523967Abstract: The invention relates to a liquid resin composition intended for manufacturing abrasives that comprises at least one novolac resin having a glass transition temperature less than or equal to 60° C., at least one reactive diluent and optionally at least one crosslinking agent. Application of the resin composition for producing abrasive articles, especially bonded abrasives and coated abrasives. It also relates to the abrasive articles comprising abrasive grains connected by such a liquid resin composition.Type: GrantFiled: October 1, 2008Date of Patent: September 3, 2013Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs Technologie et Services S.A.S.Inventors: Alix Arnaud, Philippe Espiard, Sandrine Pozzolo
-
Publication number: 20130219800Abstract: Methods are provided for forming an abrasive coating on a surface of a backing. An abrasive slurry includes a continuous phase, a first discontinuous phase of abrasive particles dispersed in the continuous liquid phase, and a second discontinuous phase of binder precursor particles dispersed in the continuous liquid phase, so that the continuous liquid phase carries the first and second discontinuous phases. A coated abrasive article is formed by coating the abrasive slurry onto the surface of the backing, and then removing the continuous phase.Type: ApplicationFiled: April 15, 2013Publication date: August 29, 2013Inventor: Olivier L. Guiselin
-
Publication number: 20130217309Abstract: A polishing pad has a polishing layer including a non-foamed polyurethane, wherein the non-foamed polyurethane is a reaction cured body of a polyurethane raw material composition containing an isocyanate-terminated prepolymer obtained by reacting a prepolymer raw material composition containing a diisocyanate, a high-molecular-weight polyol and a low-molecular-weight polyol; an isocyanate modified body polymerized by adding three or more diisocyanates; and a chain extender, and the addition amount of the isocyanate-modified body is 5 to 30 parts by weight with respect to 100 parts by weight of the isocyanate-terminated prepolymer. The polishing pad hardly causes scratches on the surface of an object to be polished and has an improved dressing property.Type: ApplicationFiled: October 26, 2010Publication date: August 22, 2013Applicant: TOYO TIRE & RUBBER CO., LTD.Inventors: Yoshiyuki Nakai, Kazuyuki Ogawa, Kenji Nakamura
-
Publication number: 20130216595Abstract: In order to obtain steady erosion from soluble tablets and particularly constant dispersion of contained abrasive media, the employment of magnesium oxide and transverse interlaced polyvinylpyrrolidone (PVP) in defined layers and the admixing of randomly scattered silicic acids is suggested.Type: ApplicationFiled: June 10, 2011Publication date: August 22, 2013Inventor: Daniel Mueller
-
Patent number: 8512427Abstract: A chemical mechanical polishing pad comprising an acrylate polyurethane polishing layer, wherein the polishing layer exhibits a tensile modulus of 65 to 500 MPa; an elongation to break of 50 to 250%; a storage modulus, G?, of 25 to 200 MPa; a Shore D hardness of 25 to 75; and a wet cut rate of 1 to 10 ?m/min.Type: GrantFiled: September 29, 2011Date of Patent: August 20, 2013Assignee: Rohm and Haas Electronic Materials CMP Holdings, Inc.Inventors: Jia Xie, David B. James, Chau H. Duong
-
Patent number: 8512100Abstract: There are provided an abrasive tape capable of suppressing contamination of a magnetic disk due to shattered abrasive particles and smoothing the surface of the magnetic disk; a method for producing an abrasive tape; and a varnishing process. An abrasive tape 1 produced according to the method for producing an abrasive tape of the invention is used in a process for varnishing a magnetic disk and produced according to a process for preparing a slurry by kneading and dispersing abrasive particles 5 and a binding agent 6; a process for forming a coating film by applying the slurry on a support 2; a process for forming an abrasive particle layer 3 by hardening the coating film; and a process for forming a coating layer 4 on the surface of the abrasive particle layer 3.Type: GrantFiled: June 19, 2009Date of Patent: August 20, 2013Assignee: Showa Denko K.K.Inventors: Ryuji Sakaguchi, Kazuya Niwa
-
Publication number: 20130205679Abstract: The present disclosure relates to a process for forming a chemical mechanical planarization pad. The process includes forming a chemical mechanical planarization pad including a polymer matrix and an embedded structure by heating the polymer matrix and the embedded structure at a first temperature T1 and a first pressure P1. The chemical mechanical planarization pad is then allowed to deform at a second temperature T2 and a second pressure P2. The chemical mechanical planarization pad is then compressed at given mold cavity thickness by applying heat at a third temperature T3, wherein T1>T2, P1>P2, T1?T3.Type: ApplicationFiled: February 14, 2013Publication date: August 15, 2013Applicant: INNOPAD, INC.Inventor: Innopad, Inc.
-
Publication number: 20130203328Abstract: A bonded abrasive wheel comprises ceramic shaped abrasive particles retained in a binder. The ceramic shaped abrasive particles are bounded by a respective base, top and plurality of sides connecting the base and the top. Adjacent sides meet at respective side edges having an average radius of curvature of less than 50 micrometers.Type: ApplicationFiled: February 22, 2011Publication date: August 8, 2013Inventors: Maiken Givot, Mark G. Schwabel
-
Publication number: 20130189911Abstract: A coated abrasive product includes green, unfired abrasive aggregates having a generally spheroidal or toroidal shape, the aggregates formed from a composition comprising abrasive grit particles, a nanoparticle binder, a sulfosuccinate, and a crosslinking, wherein the abrasive aggregates are dispersed within a polymer resin coating comprising a mixture of copolyester resin. The coated abrasive product is capable of finishing coated surfaces and repairing defects in coated surfaces, including surfaces coated with automotive primers, paints, clear coats, and combinations thereof.Type: ApplicationFiled: January 10, 2013Publication date: July 25, 2013Inventors: James J. Manning, Jianna Wang, Charles G. Herbert, William C. Rice, Anuj Seth
-
Patent number: 8491681Abstract: An abrasive product comprises an abrasive component and a bond component. In one embodiment, the bond component includes a binder and a filler component that includes a cryolite and at least one member selected from the group consisting of sodium oxalate (Na2C2O4), sodium borate (Na2B4O7.10H2O), sodium polyphosphate, opal glass, a hexafluoroferrate, and a hexafluorozirconate. In another embodiment, the bond component includes a binder and a filler component that includes at least one member selected from the group consisting of a hexafluoroferrate, and a hexafluorozirconate. Alternatively, an abrasive product comprises an abrasive component and a filler component that includes at least one member selected from the group a hexafluoroferrate and a hexafluorozirconate. The abrasive component includes at least one of abrasive particles and agglomerates of abrasive particles.Type: GrantFiled: September 23, 2008Date of Patent: July 23, 2013Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain AbrasifsInventors: Katarzyna Chuda, Jérôme Latournerie, Patrick Garnier
-
Patent number: 8480773Abstract: A polishing pad having a compressibility-aiding stripe buried therein is fabricated by assembling the compressibility-aiding stripe in a mold cavity, filling the mold cavity with a polymer material, and releasing the polishing pad from the mold. Embodiments include assembling a compressibility-aiding stripe comprising a solid pillar of material having a larger compressibility than that of the polishing pad body, and releasing a single layer polishing pad from the mold.Type: GrantFiled: June 14, 2011Date of Patent: July 9, 2013Assignee: IV Technologies Co., Ltd.Inventors: Yung-Chung Chang, Shen-Yu Chang, Wen-Chang Shih
-
Publication number: 20130167447Abstract: A method of making a near-net superhard material body includes preparing granules from a mixture of superhard powder, binders, and fluids, compacting the granules to form a soft green complex-shaped body, heating the soft green body in a furnace to form a hard green body free from residual binders, embedding one or more of the hard green bodies in a containment powder or a containment means and forming a pressure cell, sintering the cell at high pressure and high temperature, and removing the containment powder from the cell or removing the inserts from the containment means to reveal one or more near-net bodies.Type: ApplicationFiled: December 31, 2012Publication date: July 4, 2013Applicant: DIAMOND INNOVATIONS, INC.Inventors: Steven W Webb, Gerold Weinl, Malin Martensson, Thomas C Easley
-
Patent number: 8470061Abstract: An abrasive article includes a backing including first and second major surfaces, an abrasive layer disposed over the first major surface, and a back coat layer disposed over the second major surface. The back coat layer includes a polymeric material and a fabric.Type: GrantFiled: May 27, 2011Date of Patent: June 25, 2013Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain AbrasifsInventors: Paul S. Goldsmith, John F. Porter, Anthony C. Gaeta
-
Patent number: 8460414Abstract: Disclosed is a polishing slurry which enables to suppress damages to an under layer while securing an adequate polishing rate. The polishing slurry contains a resin (A) having an amide group and an organic resin (B).Type: GrantFiled: April 14, 2006Date of Patent: June 11, 2013Assignee: Mitsui Chemicals, Inc.Inventors: Akinori Etoh, Setsuko Oike, Tomokazu Ishizuka, Shigeharu Fujii, Kiyotaka Shindo
-
Publication number: 20130137349Abstract: Polishing pads with grooved foundation layers and polishing surface layers are described. In an example, a polishing pad for polishing a substrate includes a foundation layer having a pattern of grooves disposed therein. A continuous polishing surface layer is attached to the pattern of grooves of the foundation layer. In another example, a polishing pad for polishing a substrate includes a foundation layer with a surface having a pattern of protrusions disposed thereon. Each protrusion has a top surface and sidewalls. A non-continuous polishing surface layer is attached to the foundation layer and includes discrete portions. Each discrete portion is attached to the top surface of a corresponding one of the protrusions of the foundation layer. Methods of fabricating polishing pads with a polishing surface layer bonded to a grooved foundation layer are also described.Type: ApplicationFiled: November 29, 2011Publication date: May 30, 2013Inventors: Paul Andre Lefevre, William C. Allison, Diane Scott, James P. LaCasse
-
Publication number: 20130137350Abstract: Polishing pads with foundation layers and polishing surface layers are described. In an example, a polishing pad for polishing a substrate includes a foundation layer. A polishing surface layer is bonded to the foundation layer. Methods of fabricating polishing pads with a polishing surface layer bonded to a foundation layer are also described.Type: ApplicationFiled: November 29, 2011Publication date: May 30, 2013Inventors: William C. Allison, Diane Scott, Paul Andre Lefevre, James P. LaCasse, Alexander William Simpson
-
Publication number: 20130137344Abstract: Disclosed herein are abrasive filaments with improved stiffness and industrial brushes comprising the same, wherein the abrasive filaments are formed of polyamide compositions comprising, (a) at least one polyamide; (b) about 0.1-1 wt % of at least one linear chain extending compound that has a molecular weight of 1000 Daltons or lower; (c) about 0.1-1 wt % of at least one antioxidant; and (d) about 10-40 wt % of abrasive particles, with the total wt % of all components in the composition totaling to 100 wt %.Type: ApplicationFiled: November 29, 2012Publication date: May 30, 2013Applicant: E I DU PONT DE NEMOURS AND COMPANYInventor: E I DU PONT DE NEMOURS AND COMPANY
-
Patent number: 8449635Abstract: The disclosure is directed to an abrasive article. The abrasive article includes a backing having a major surface and a make layer. The make layer is disposed over the major surface of the backing. The make layer includes abrasive grains and a photoinitiator that increases the depth of ultraviolet cure of the make layer by at least about 50% compared to bis(2,4,6-trimethyl benzoyl) phenyl phosphine oxide. The disclosure is also directed to a method for forming the abrasive article.Type: GrantFiled: December 8, 2008Date of Patent: May 28, 2013Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain AbrasifsInventor: Xiaorong You
-
Publication number: 20130125473Abstract: Polyurethane composition based on a certain polyether and polyester prepolymer reaction mixture, wherein the composition is utilized in manufacturing chemical mechanical polishing/planarizing (CMP) pads. The CMP pads have low rebound and can dissipate irregular energy as well as stabilize polishing to yield improved uniformity and less dishing of the substrate.Type: ApplicationFiled: January 21, 2013Publication date: May 23, 2013Inventors: Yong Zhang, David Huang, Lu Sun
-
Publication number: 20130125474Abstract: An abrasive article includes an abrasive layer having an array of protrusions. The abrasive layer has a thickness not greater than about 500 mils. The abrasive article is free of a backing layer.Type: ApplicationFiled: December 20, 2012Publication date: May 23, 2013Inventors: Ramaswamy Sankaranarayanan, Daniel S. Montuori, Leland E. Moll
-
Patent number: 8444727Abstract: A method of manufacturing polishing layers for use in chemical mechanical polishing pads is provided, wherein the formation of density defects in the polishing layers is minimized.Type: GrantFiled: August 16, 2011Date of Patent: May 21, 2013Assignee: Rohm and Haas Electronic Materials CMP Holdings, Inc.Inventors: Kathleen McHugh, James T. Murnane, George Harry McClain, Durron Andre Hutt, Robert A Brady, Christopher Alan Young, Jeffrey Borcherdt Miller
-
Publication number: 20130111822Abstract: The invention relates to a structure based on glass strand coated with a resin composition which comprises the following constituents in the proportions indicated, expressed in percentage by weight of solid matter: 75 to 98% of a mixture of at least one novolac having a glass transition temperature lower than or equal to 60° C. and at least one novolac having a glass transition temperature above 60° C., 0.5 to 10% of at least one wax, 1 to 15% of at least one crosslinking agent chosen from imines and modified melamines of formula: in which R1, R2, R3, R4, R5 and R6, which are identical or different, represent a hydrogen atom or a —CH2OH, —CH2OCH3 or —CH2OCH2OCH3 radical, at least one of the radicals R1 to R6 being other than H, 0 to 10% of at least one plasticizing agent. The invention also relates to the resin composition suitable for producing the reinforcing structure and bonded abrasive articles incorporating such a structure, in particular abrasive grinding wheels.Type: ApplicationFiled: April 21, 2011Publication date: May 9, 2013Applicant: SAINT-GOBAIN ADFORSInventors: Nadege Ombe Wandji, Alix Arnaud, Philippe Espiard, Katarzyna Chuda
-
Publication number: 20130111823Abstract: The invention relates to an elastically deformable composite material suitable to be processed further into sheet-like abrasive products, comprising a sheet-like supporting base coated or impregnated with a prepolymer material which obtains thermosetting properties when thermally post-cured, or consisting of a coated or impregnated supporting base, characterized in that the supporting base comprises at least one layer of bonded fibers selected among inorganic fibers and organic synthetic fibers, if necessary mixed with natural fibers. Moreover, it relates to a method for the manufacture of the composite material.Type: ApplicationFiled: July 20, 2011Publication date: May 9, 2013Applicant: BAMBERGER KALIKO GMBHInventors: Peter Klenner, Klaus Fuessmann, Waldfried Weier
-
Patent number: 8430724Abstract: A surface cleaning system includes a retainer having a non-absorbing retaining surface and a surface cleaning compound retained at the retaining surface of the retainer and formed a cleaning surface overlapped thereat. The surface cleaning compound is a polymer having high density and high adhesive ability for removing imbedded contaminants from a working surface and grabbing the contaminants therefrom. The retainer is made of non-absorbing material that prevents lubricant and the surface cleaning compound being absorbed through the retainer.Type: GrantFiled: August 19, 2011Date of Patent: April 30, 2013Assignees: Total Import Solutions, Inc., Tri-Plex Technical Services, Ltd.Inventors: Paoting Jerry Heilian, Tsai Guan-Chang, Steven Levy
-
Publication number: 20130102231Abstract: Polishing pads including organic particulates in a continuous polymer phase, and methods of making and using such pads in a polishing process. In one exemplary embodiment, the polishing pads include a multiplicity of polishing elements integrally formed in a sheet. In another exemplary embodiment, the polishing elements are bonded to a support layer, for example by thermal bonding. In certain embodiments, the polishing pad may additionally include a compliant layer affixed to the support layer, and optionally, a polishing composition distribution layer.Type: ApplicationFiled: December 28, 2010Publication date: April 25, 2013Applicant: 3M Innovative Properties CompanyInventors: William D. Joseph, Brian D. Goers
-
Patent number: 8425640Abstract: An abrasive article comprising an elongated body, a bonding layer overlying a surface of the elongated body, and abrasive grains contained within the bonding layer at an average abrasive grain concentration within a range between about 0.02 ct/m and about 0.30 ct/m.Type: GrantFiled: August 16, 2010Date of Patent: April 23, 2013Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain AbrasifsInventors: Susanne Liebelt, Vincent Tesi, Theodor von Bennigsen-Mackiewicz
-
Publication number: 20130095731Abstract: A coated abrasive product includes green, unfired abrasive aggregates having a generally spheroidal or toroidal shape, the aggregates formed from a composition comprising abrasive grit particles and a nanoparticle binder, wherein the abrasive aggregates are dispersed within a polymer resin coating, and wherein the coated abrasive product is capable of superfinishing a metal surface having an initial Ra in the range of about 1.5 micro inches to about 12.5 micro inches prior to application of the coated abrasive product and after application the surface has an Ra of less than 1.0 micro inch.Type: ApplicationFiled: September 28, 2012Publication date: April 18, 2013Inventors: James J. Manning, Mark E. Sternberg, Jianna Wang
-
Publication number: 20130091778Abstract: The invention relates to a thermally curable liquid resin composition intended for manufacturing abrasives that comprises at least one epoxy resin comprising at least two epoxy groups and at least one reactive diluent, said composition having a viscosity, at 25° C., less than or equal to 7000 mPa·s. Application of the resin composition for producing abrasive articles, especially bonded abrasives and coated abrasives. It also relates to the abrasive articles comprising abrasive grains connected by such a liquid resin composition.Type: ApplicationFiled: December 11, 2012Publication date: April 18, 2013Inventors: Alix ARNAUD, Philippe Espiard, Sandrine Pozzolo
-
Publication number: 20130084702Abstract: A chemical mechanical polishing pad comprising an acrylate polyurethane polishing layer, wherein the polishing layer exhibits a tensile modulus of 65 to 500 MPa; an elongation to break of 50 to 250%; a storage modulus, G?, of 25 to 200 MPa; a Shore D hardness of 25 to 75; and a wet cut rate of 1 to 10 ?m/min.Type: ApplicationFiled: September 29, 2011Publication date: April 4, 2013Inventors: Jia Xie, David B. James, Chau H. Duong
-
Publication number: 20130078892Abstract: A polishing pad having a polishing layer comprising a thermoset polyurethane foam, wherein about the thermoset polyurethane foam, the Asker C hardness value thereof is 82 or less as a 60-second value, the hardness value being a value after the foam is immersed in water for 24 hours, and further the value of the tensile storage modulus E? (30° C.) thereof at a frequency of 1.6 Hz satisfies the following expression (1): Y<5X?150??(1) wherein Y represents the tensile storage modulus E? (MPa), and X represents the Asker C hardness value (60-second value) after the foam is immersed in water for 24 hours.Type: ApplicationFiled: March 22, 2011Publication date: March 28, 2013Applicant: TOYO TIRE & RUBBER CO., LTD.Inventors: Akinori Sato, Nobuyoshi Ishizaka
-
Patent number: 8404009Abstract: A polishing composition for a hard disk substrate includes alumina particles, silica particles, and water. The volume median diameter of secondary particles of the alumina particles measured by a laser beam diffraction method is 0.1 to 0.8 ?m. The volume median diameter of primary particles of the silica particles measured by transmission electron microscope observation is 40 to 150 nm. The standard deviation in number-basis particle size of the primary particles of the silica particles measured by the transmission electron microscope observation is 11 to 35 nm. The polishing composition for a hard disk substrate can preferably reduce the embedding of alumina abrasive grains into the substrate without impairing the productivity.Type: GrantFiled: October 28, 2008Date of Patent: March 26, 2013Assignee: Kao CorporationInventors: Masahiko Suzuki, Kenichi Suenaga, Makoto Suzuki
-
Patent number: 8393940Abstract: A polishing pad includes a polishing layer having a polishing surface, an adhesive layer on a side of the polishing layer opposite the polishing layer, and a solid light-transmitting window extending through and molded to the polishing layer. The solid light-transmitting window has an upper portion with a first lateral dimension and a lower portion with a second lateral dimension that is smaller than the first lateral dimension. A top surface of the solid light-transmitting window coplanar with the polishing surface and a bottom surface of the solid light-transmitting window coplanar with a lower surface of the adhesive layer.Type: GrantFiled: April 16, 2010Date of Patent: March 12, 2013Assignee: Applied Materials, Inc.Inventors: Boguslaw A Swedek, Doyle E Bennett, Dominic J Benvegnu
-
Publication number: 20130042536Abstract: A method of manufacturing polishing layers for use in chemical mechanical polishing pads is provided, wherein the formation of density defects in the polishing layers is minimized.Type: ApplicationFiled: August 16, 2011Publication date: February 21, 2013Applicant: Rohm and Haas Electronic Materials CMP Holdings, Inc.Inventors: Kathleen McHugh, James T. Murnane, George H. McClain, Durron A. Hutt, Robert A. Brady, Christopher A. Young
-
Patent number: 8377159Abstract: A synthetic grinding stone used for the polishing of a silicon wafer is composed of a structure containing cerium oxide fine particles as abrasive grains, a resin as a binder, a salt as a filler and a nano diamond as an additive. This synthetic grinding stone is characterized in that the purity of the cerium oxide is not less than 60% by weight, the content of the salt as a filler is not less than 1% but not more than 20%, the volume content of the nano diamond as an additive is not less than 0.1% but less than 20% relative to the total volume of the structure, and the porosity as the volume fraction relative to the total volume of the structure is less than 30%.Type: GrantFiled: March 25, 2008Date of Patent: February 19, 2013Assignees: Tokyo Diamond Tools Mfg. Co., Ltd., Toyota Motor CorporationInventors: Yuji Yoshida, Hiroshi Eda, Libo Zhou, Masaaki Kenmochi, Yoshiaki Tashiro, Sumio Kamiya, Hisao Iwase, Teruki Yamashita, Noboru Otake
-
Publication number: 20130040539Abstract: A polishing pad, a polishing method and a method of forming a polishing pad are provided. The polishing pad includes a polishing layer and a plurality of arc grooves. The arc grooves are disposed in the polishing layer. Each of the arc grooves has two ends, and at least one end thereof has an inclined wall. The angle between the inclined wall of each groove and the surface plane of the polishing layer is less than 90 degree.Type: ApplicationFiled: October 10, 2012Publication date: February 14, 2013Applicant: IV Technologies Co., Ltd.Inventor: Yu-Piao WANG
-
Publication number: 20130040543Abstract: The present invention relates to a polishing pad and method for making the same. In the invention, a liquid-state polymer material is directly formed on the surface of a base material, and then the liquid-state polymer material is solidified to form a flat grinding layer. Whereby, the polishing pad has high unity and flatness. The grinding layer has attenuated structures and a plurality of holes, thus increasing the storage ability of polishing particles distributed in a polishing liquid. In addition, the polishing pad has high compression ratio, so the polishing pad can compactly contact a polishing workpiece, and will not scratch the surface of the polishing workpiece scratched. Therefore, the polishing effect and quality will be improved.Type: ApplicationFiled: October 18, 2012Publication date: February 14, 2013Applicant: SAN FANG CHEMICAL INDUSTRY CO., LTD.Inventor: San Fang Chemical Industry Co., Ltd.
-
Publication number: 20130040537Abstract: Ceramic shaped abrasive particles have four major sides joined by six common edges. Each one of the four major sides contacts three other of the four major sides. The six common edges have substantially the same length. Methods of making the ceramic shaped particle are disclosed. The ceramic shaped abrasive particles are useful for abrading a surface of a workpiece. An abrasive article includes the ceramic shaped abrasive particles retained in a binder.Type: ApplicationFiled: April 20, 2011Publication date: February 14, 2013Inventors: Mark G. Schwabel, Maiken Givot, Negus B. Adefris