With Synthetic Resin Patents (Class 51/298)
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Publication number: 20150099440Abstract: A method for manufacturing a polishing pad for a hand tool having a working element performing an orbital, random orbital, and/or a rotational movement, the polishing pad having attached layers including: a resilient damping layer, an adhesive layer for connection to a corresponding layer located at a bottom surface of the working element, and a polishing layer including microfiber for polishing a surface of a work piece. The method includes the steps of: providing a casting mold having a recess corresponding to form of the polishing pad and a lid for closing the recess; placing the adhesive layer into the recess; pouring the resilient material for the damping layer into the recess on top of the adhesive layer; placing the polishing layer on the resilient material; closing the recess with the lid; and manufacturing the polishing pad under external heat supply until the resilient material is cured.Type: ApplicationFiled: October 7, 2014Publication date: April 9, 2015Inventor: Guido Valentini
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Publication number: 20150093979Abstract: The present invention relates to a composite polishing pad and a method for making the same. The composite polishing pad includes a cushion layer and a polishing layer. The cushion layer includes a first polymeric elastomer with a hardness of 10 to 70 shore D, and is attached to the polishing layer directly. The polishing layer includes a second polymeric elastomer with a hardness of 30 to 90 shore D, and has a polishing surface for polishing a workpiece. Whereby, the polishing layer will not peel off from the cushion layer easily, so that the polishing quality is raised.Type: ApplicationFiled: September 29, 2014Publication date: April 2, 2015Inventors: CHUNG-CHIH FENG, I-PENG YAO, WEN-CHIEH WU, YUNG-CHANG HUNG
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Publication number: 20150093969Abstract: To obtain a circulation-type blasting device which enables stable processing for a long period of time even in a case that an elastic abrasive of which abrasive grains are attached to a surface of an elastic core are used. A circulation-type blasting device is provided with a device for recycling an elastic abrasive for recycling all or a part of elastic abrasive used in a cyclic way, and the device for recycling the elastic abrasive is provided with a mixing unit for mixing recovered abrasives recovered from an abrasive recovery unit and abrasive grains introduced from an abrasive grain supplying unit in a gas flow by introducing the abrasive grains and the recovered abrasive in the gas flow to generate a solid-gas biphase flow, and a combining unit composed of at least one bent space to which the solid-gas biphase flow is introduced.Type: ApplicationFiled: September 22, 2014Publication date: April 2, 2015Inventors: Keiji MASE, Shozo Ishibashi, Yuya Takahashi, Masatoshi Kitagami
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Patent number: 8992644Abstract: A plastic soft composition is formed of soft base material constantly provided with plasticity, porous fine particles for polishing contained in the base material, and the like, and a polishing process and a coating process are performed to a painted surface and the like using the plastic soft composition. The fine particles for polishing are impregnated with a coating agent (a surface protective agent) added with an activator which is emulsified by contact with water, and the coating agent is held in concave portions formed in the fine particles. Both polishing work and coating work are achieved by sliding the plastic soft composition on a painted surface by a palm pressure of a user.Type: GrantFiled: December 11, 2009Date of Patent: March 31, 2015Assignee: Joybond Co., Ltd.Inventor: Tadao Kodate
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Patent number: 8992645Abstract: An abrasive article including a bonded abrasive having a body formed of abrasive grains contained within a bond material, wherein the body grinds a superabrasive workpiece having an average Vickers hardness of at least about 5 GPa at an average specific grinding energy (SGE) of not greater than about 350 J/mm3, at a material removal rate of at least about 8 mm3/sec, and wherein grinding is a centerless grinding operation.Type: GrantFiled: August 16, 2011Date of Patent: March 31, 2015Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain AbrasifsInventors: Rachana Upadhyay, Srinivasan Ramanath, Christopher Arcona, John E. Gillespie
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Patent number: 8992643Abstract: An abrasive article includes a fibrous substrate, a binder disposed on the fibrous substrate, and abrasive grains in contact with the binder. The binder includes an imide cross-linked urethane derived from a blocked isocyanate component and an anhydride component.Type: GrantFiled: December 30, 2011Date of Patent: March 31, 2015Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain AbrasifsInventor: Charles G. Herbert
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Publication number: 20150083502Abstract: A polycrystalline diamond (PCD) composite compact element 100 comprising a substrate 130, a PCD structure 120 bonded to the substrate 130, and a bond material in the form of a bond layer 140 bonding the PCD structure 120 to the substrate 130; the PCD structure 120 being thermally stable and having a mean Young's modulus of at least about 800 GPa, the PCD structure 120 having an interstitial mean free path of at least about 0.05 microns and at most about 1.5 microns; the standard deviation of the mean free path being at least about 0.05 microns and at most about 1.5 microns. Embodiments of the PCD composite compact element may be for a tool for cutting, milling, grinding, drilling, earth boring, rock drilling or other abrasive applications, such as the cutting and machining of metal.Type: ApplicationFiled: August 21, 2014Publication date: March 26, 2015Inventors: Danny Eugene Scott, Kurtis Karl Schmitz, Clement David Van Der Riet, Antionette Can
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Patent number: 8986407Abstract: An abrasive article includes a polymer matrix and abrasive grains dispersed in the polymer matrix, wherein the abrasive article has a void volume of at least 50%. The polymer matrix is polymerized from a monomer including at least one double bond.Type: GrantFiled: February 17, 2009Date of Patent: March 24, 2015Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain AbrasifsInventors: Rachana Upadhyay, Richard W. J. Hall
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Patent number: 8979957Abstract: An abrasive product includes a plurality of abrasive particles and a resin binder cured from a resin composition that includes an aqueous dispersion of melamine methylol having a melamine-to-formaldehyde molar equivalent ratio of between about 1:1 and about 1:3.2, wherein the aqueous dispersion has a pH in a range of between about 8 and about 10. The composition also includes a formaldehyde-based resins, such as a urea-formaldehyde resin or phenol-formaldehyde resin. The melamine methylol comprises between about 1 wt % and about 50 wt % of the combined weight of the formaldehyde-based resin and the melamine methylol.Type: GrantFiled: September 19, 2008Date of Patent: March 17, 2015Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain AbrasifsInventors: Abdul Habid Pullichola, Adiseshaiah K. Seshu, Kottotil Mohan Das
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Publication number: 20150059254Abstract: The invention provides a polishing pad suitable for planarizing semiconductor, optical and magnetic substrates. The polishing pad includes a cast polyurethane polymeric material formed from a prepolymer reaction of a polypropylene glycol and a toluene diisocyanate to form an isocyanate-terminated reaction product. The toluene diisocyanate has less than 5 weight percent aliphatic isocyanate; and the isocyanate-terminated reaction product having 5.55 to 5.85 weight percent unreacted NCO. The isocyanate-terminated reaction product being cured with a 4,4?-methylene-bis(3-chloro-2,6-diethylaniline) curative agent. The non-porous cured product having a tan delta of 0.04 to 0.10, a Young's modulus of 140 to 240 MPa and a Shore D hardness of 44 to 56.Type: ApplicationFiled: September 4, 2013Publication date: March 5, 2015Inventors: Fengji Yeh, Marty W. DeGroot, James Murnane, David B. James, Mary Jo Kulp
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Patent number: 8968435Abstract: A coated abrasive product including 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 polishing an optical component, including ophthalmic lenses without the need to apply an abrasive slurry.Type: GrantFiled: March 29, 2013Date of Patent: March 3, 2015Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain AbrasifsInventors: James J. Manning, Mark E. Sternberg, Jianna Wang
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Publication number: 20150052822Abstract: A lapping slurry and method of making the lapping slurry are provided. The lapping slurry comprises abrasive grains dispersed in a carrier. The carrier comprises water, ethylene glycol and between about 0.5 wt % to about 60 wt % surfactant. Abrasive particles are positively charged when dispersed in ethylene glycol having a pH in a range of from 5 to 9, as evidenced by zeta potentials.Type: ApplicationFiled: August 23, 2013Publication date: February 26, 2015Applicant: DIAMOND INNOVATIONS, INC.Inventor: Shuang Ji
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Publication number: 20150056122Abstract: A polishing composition is composed of a filtered diluted liquid obtained through an undiluted liquid-preparing step, an undiluted liquid-filtering step, a diluting step, and a diluted liquid-filtering step. In the undiluted liquid-preparing step, an undiluted liquid is prepared by mixing raw materials for the polishing composition. In the undiluted liquid-filtering step, the undiluted liquid is filtered. In the diluting step, the filtered undiluted liquid is diluted to obtain a diluted liquid. In the diluted liquid-filtering step, the diluted liquid is filtered. The polishing composition is used, for example, for polishing a silicon substrate material to produce a silicon substrate.Type: ApplicationFiled: January 16, 2013Publication date: February 26, 2015Inventors: Shuhei Takahashi, Kohsuke Tsuchiya, Shinichiro Takami, Yoshio Mori
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Patent number: 8956429Abstract: Disclosed are a cutting wheel composition, and a cutting wheel using the cutting wheel composition. The disclosed composition includes 50 to 85 wt % of abrasive particles, 10 to 25 wt % of binder resin, and balance filler, wherein the binder resin includes a phenolic resin as a first binder resin; and at least one of a (bis)maleimide resin and a cyanate ester resin as a second binder resin. The composition includes at least one of the (bis)maleimide resin and the cyanate ester resin, as well the phenolic resin, as the binder resin, and thereby makes it possible to fabricate a cutting wheel having improved life characteristics through the improvement of heat-resistance and scratch-resistance.Type: GrantFiled: August 25, 2010Date of Patent: February 17, 2015Assignee: 3M Innovative Properties CompanyInventors: Doo-Hyun Lee, Baek-Nam Noh, Soo-Won Lee
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Publication number: 20150033636Abstract: An abrasive article may be configured to work titanium and may comprise a body including a bond material comprising an organic material. A first type of abrasive particles may be contained within the bond material and comprise fused alumina. The body may comprise a burnout modulus of rupture (MOR) of at least about 1.6 MPa.Type: ApplicationFiled: August 1, 2014Publication date: February 5, 2015Inventors: Lingyu Li, Muthu Jeevanantham, Sena Ada, Scott Leonard
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Publication number: 20150027063Abstract: A method for fabricating a pad conditioning tool includes the steps: preparing a sapphire substrate with a specific orientation plane, wherein the specific orientation plane is selected from a group consisting of a-plane, c-plane, r-plane, m-plane, n-plane and v-plane; utilizing screen printing technique and a screen plate in order to transfer an image pattern such that upon solidifying one side surface of the sapphire substrate is imprinted with the image pattern; and performing an etching process on the side surface of the sapphire substrate such that the side surface is formed with a plurality of micro particles of specific structures.Type: ApplicationFiled: July 25, 2014Publication date: January 29, 2015Inventors: Chun-Han Tai, TZU-HSUAN DAI, Kuang-Ling Wei
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Publication number: 20150027064Abstract: An aqueous polymer binder composition adapted for the manufacture of abrasive articles, such as coated abrasive articles, comprising at least one saccharide, at least one polycarboxylic organic acid, and at least one crosslinking catalyst. The aqueous composition is formaldehyde-free and can further comprise rheology modifiers, fillers, and hydrophobizing agents.Type: ApplicationFiled: December 13, 2012Publication date: January 29, 2015Applicant: SAINT-GOBAIN ABRASIFSInventors: Clément Houga, Boris Jaffrennou, Alix Arnaud
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Publication number: 20150027062Abstract: An abrasive article includes a bonded abrasive having a body made of abrasive grains contained within a composite bond material. The composite bond material can include an organic material and a metal material. The body can also include a filler material made of a superabrasive material. In an embodiment, the filler material can have an average particle size at least about 10 times less than an average particle size of the abrasive grains.Type: ApplicationFiled: July 21, 2014Publication date: January 29, 2015Inventors: Rachana Upadhyay, Srinivasan Ramanath
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Patent number: 8940063Abstract: A cloth backing for an abrasive article is treated by combining a phenolic resin, a latex and a colloidal silicon oxide composition to prepare a colloidal formulation, which is then applied to the cloth backing and cured. Coated abrasive articles are formed by applying a make coat formulation to the treated cloth backing, applying an abrasive and then curing the make coat formulation.Type: GrantFiled: December 23, 2010Date of Patent: January 27, 2015Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain AbrasifsInventors: Yu Xiang Yang, Adiseshaiah K. Seshu, Lin Hua Feng
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Patent number: 8936659Abstract: A substance includes diamond particles having a maximum linear dimension of less than about 1 ?m and an organic compound attached to surfaces of the diamond particles. The organic compound may include a surfactant or a polymer. A method of forming a substance includes exposing diamond particles to an organic compound, and exposing the diamond particles in the presence of the organic compound to ultrasonic energy. The diamond particles may have a maximum linear dimension of less than about 1 ?m. A composition includes a liquid, a plurality of diamond nanoparticles dispersed within the liquid, and an organic compound attached to surfaces of the diamond nanoparticles. A method includes mixing a plurality of diamond particles with a solution comprising a liquid solvent and an organic compound, and exposing the mixture including the plurality of diamond nanoparticles and the solution to ultrasonic energy.Type: GrantFiled: October 18, 2011Date of Patent: January 20, 2015Assignee: Baker Hughes IncorporatedInventors: Soma Chakraborty, Gaurav Agrawal, Anthony A. DiGiovanni
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Publication number: 20150014067Abstract: A method of forming a thermally stable cutting element may include providing a cutting element including a substrate fixed to a polycrystalline diamond cutting table; enclosing the substrate and at least a portion of the polycrystalline diamond cutting table within a protective element to form a partially enclosed cutting element; exerting a compressive squeeze on the cutting element of about 5-25%; and exposing the partially enclosed cutting element to a leaching solution so that at least part of an unenclosed portion of the polycrystalline diamond table is in contact with the leaching solution.Type: ApplicationFiled: July 11, 2014Publication date: January 15, 2015Inventors: Giuseppe Muzzi, Alysia C. White, Anthony Griffo, James Ray Podesta
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Publication number: 20150017888Abstract: For the manufacture of an abrasive bristle, a plastic material is melted, and a granular material made of abrasive particles is mixed into the melt. The melt is extruded together with the abrasive particles into a filament, and the filament is subsequently treated and cut up. The plastic material may be a high-temperature-resistant polymer with a continued use temperature of ?150° C. and for the melt with the abrasive particles to be extruded at a temperature of ?280° C. A brush equipped with corresponding abrasive bristles can be used for the surface treatment of a workpiece, whereby the brush is rotated with a speed in the range of 3,000 rpm to 12,000 rpm and is brought into contact with the surface to be treated.Type: ApplicationFiled: January 18, 2013Publication date: January 15, 2015Inventors: Jürgen Idzko, Dieter Baur, Stefan Kenzelmann, Holger Meid, Günter Muckenfuss
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Publication number: 20150017454Abstract: Chemical mechanical polishing composition is provided. The composition comprises (A) inorganic particles, organic particles, or a mixture or composite thereof, (B) a protein, and (C) an aqueous medium.Type: ApplicationFiled: January 25, 2013Publication date: January 15, 2015Applicant: BASF SEInventors: Yuzhuo Li, Bastian Marten Noller, Michael Lauter, Roland Lange
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Publication number: 20150017607Abstract: A method for removing dental material is disclosed. The method may include suspending, by a hydrated polymeric material, a quantity of abrasive media. The hydrated polymeric material and suspended abrasive media may then be pressurized. Accordingly, an abrasive stream may be formed by expelling, under pressure, the hydrated polymeric material and suspended abrasive media from a nozzle. The abrasive stream may be precisely applied to a tooth to abrade the enamel or dentin thereof as a drilling instrumentality.Type: ApplicationFiled: July 10, 2013Publication date: January 15, 2015Inventors: Timothy D. Nelson, Daren N. Heaton
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Patent number: 8932377Abstract: A system for producing thermally stable cutting elements may include a heat source, a pressure vessel, at least one polycrystalline diamond body attached to a carbide substrate, and a leaching agent is disclosed, wherein the heat source includes a container comprising at least one receiving mechanism and at least one retention mechanism, and wherein the carbide substrate is disposed in the at least one receiving mechanism of the pressure vessel, and wherein the leaching agent is disposed in the pressure vessel, and wherein the leaching agent removes the catalyzing material from the interstitial spaces interposed between the diamond particles of the at least one polycrystalline diamond body, and wherein the at least one retention mechanism of the pressure vessel seals at least a portion of the carbide substrate into the at least one receiving mechanism and prevents the leaching agent from contacting at least a portion of the carbide substrate.Type: GrantFiled: March 1, 2012Date of Patent: January 13, 2015Assignee: Smith International, Inc.Inventors: J. Daniel Belnap, Peter Thomas Cariveau, Loel Corbett, Ronald K. Eyre
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Publication number: 20150000204Abstract: An abrasive article has an abrasive portion and chopped strand fibers (CSF) with enhanced strength and/or fracture of toughness. The CSF may be coated with a thermoplastic having a loss on ignition of at least about 2 wt %. The CSF can have a primary coating and a secondary coating on the primary coating. At least some of the CSF can have a length of at least about 6.3 mm.Type: ApplicationFiled: June 27, 2014Publication date: January 1, 2015Inventors: Michael W. Klett, Frank J. CSILLAG, Steven F. PARSONS
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Publication number: 20150000206Abstract: An abrasive article has an abrasive portion with an organic bond and abrasive particles. The abrasive article has a non-abrasive portion (NAP) mounted to the abrasive portion. The NAP includes molding compound (MC) having chopped strand fibers (CSF). The CSF can be coated with a thermoplastic coating having a loss on ignition (LOI) of at least about 2.4 wt %, and the NAP having no abrasive particles. The NAP can include an MC having no abrasive particles with a MOHS scale hardness of at least about 9. The NAP may include CSF coated with a primary coating and a secondary coating on the primary coating. The NAP may have an outer diameter that is at least half of but not greater than an outer diameter of the abrasive article.Type: ApplicationFiled: June 27, 2014Publication date: January 1, 2015Inventors: Michael W. Klett, Frank J. CSILLAG, Tyler B. CICHOWLAS, Davinder S. DHAMI, Lawrence J. LAVALLEE, JR.
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Publication number: 20150000203Abstract: An abrasive article includes abrasive particles contained within a hybrid bond that may include a metal bond material and an organic bond material, the article having an average thickness of 250 microns or less and the metal bond material including a solid solution phase and an intermetallic phase distinct from the solid solution phase.Type: ApplicationFiled: June 27, 2014Publication date: January 1, 2015Inventors: Cong WANG, Srinivasan RAMANATH, Rachana UPADHYAY, Robert F. CORCORAN, JR.
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Publication number: 20150000202Abstract: A method of forming a lapping plate. The method includes providing a lapping plate having a surface, spraying an adhesive onto the surface, spraying a slurry of abrasive particles and solvent onto the adhesive, and curing the adhesive to form an abrasive coating on the lapping plate. The adhesive may be, for example, epoxy, and the abrasive particles may be, for example, diamonds.Type: ApplicationFiled: June 27, 2013Publication date: January 1, 2015Inventors: Raymond Leroy Moudry, Mihaela Ruxandra Baurceanu, Joel William Hoehn
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Publication number: 20150000205Abstract: An abrasive article has an abrasive body with an axis and an axial thickness AT of not greater than about 10 mm. The abrasive body may include an abrasive matrix comprising an organic bond and abrasive particles, as well as a reinforcement of discontinuous fibers.Type: ApplicationFiled: June 27, 2014Publication date: January 1, 2015Inventors: Xiangbin YU, Dan ZHENG, Gang WANG, Dashi NIE
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Publication number: 20150004889Abstract: An abrasive article having a plurality of abrasive areas arranged in a non-uniform distribution pattern, wherein the pattern is spiral or phyllotactic, such as a spiral lattice, and in particular those patterns described by the Vogel model, such as a sunflower pattern.Type: ApplicationFiled: June 27, 2014Publication date: January 1, 2015Inventor: Anuj SETH
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Patent number: 8920527Abstract: A ceramic abrasive grain product of a ceramic material composition, said ceramic abrasive grain product comprising at least fifty percent of abrasive grains having a uniform grain thickness of from 0.002 to 0.016 inches and a length such that the grain is self dressing when oriented such that the thickness of the grain is exposed to a workpiece, abrasive products made therefrom and method for manufacturing and using same.Type: GrantFiled: June 26, 2013Date of Patent: December 30, 2014Assignee: Washington Mills Management, Inc.Inventors: Robert Seider, Angelo R. Angelone
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Publication number: 20140345202Abstract: A composition that can be used for abrasive processing is disclosed. The composition includes an organic bond material, an abrasive material dispersed in the organic bond material, and a plurality of microfibers uniformly dispersed in the organic bond material. The microfibers are individual filaments having an average length of less than about 1000 ?m. Abrasive articles made with the composition exhibit improved strength and impact resistance relative to non-reinforced abrasive tools, and improved wheel wear rate and G-ratio relative to conventional reinforced tools. Active fillers that interact with microfibers may be used to further abrasive process benefits.Type: ApplicationFiled: August 6, 2014Publication date: November 27, 2014Inventors: Michael W. Klett, Karen Conley, Steven F. Parsons, Han Zhang, Arup K. Khaund
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Patent number: 8894732Abstract: The invention provides a plurality of polymeric particles embedded with alkaline-earth metal oxide. The gas-filled polymeric microelements have a shell and a density of 5 g/liter to 200 g/liter. The shell has an outer surface and a diameter of 5 ?m to 200 ?m with the outer surface of the shell of the gas-filled polymeric particles having alkaline-earth metal oxide-containing particles embedded in the polymer. The alkaline-earth metal oxide-containing particles have an average particle size of 0.01 to 3 ?m distributed within each of the polymeric microelements to coat less than 50 percent of the outer surface of the polymeric microelements.Type: GrantFiled: May 11, 2012Date of Patent: November 25, 2014Assignee: Rohm and Haas Electronic Materials CMP Holdings, Inc.Inventors: Andrew R. Wank, Donna M. Alden, David B. James
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Publication number: 20140331567Abstract: Abrasive material regeneration method regenerates a cerium oxide abrasive material from a used abrasive material slurry containing the cerium oxide abrasive material and resulting from grinding a grinding subject having silicon as the primary component, characterized by regenerating the abrasive material containing cerium oxide through: a slurry recovery step (A) for recovering an abrasive material slurry discharged from a grinder; an isolation/concentration step (B) for adding a magnesium salt as an inorganic salt to the recovered abrasive material slurry, aggregating the abrasive material under the condition that the pH value of the mother liquor converted to 25 DEG C is at least 6.5 and less than 10.0, and thus isolating and concentrating the abrasive material from the mother liquor; and an abrasive material recovery step (C) for recovering the isolated and concentrated abrasive material.Type: ApplicationFiled: December 5, 2012Publication date: November 13, 2014Applicant: KONICA MINOLTA, INC.Inventors: Atsushi Takahashi, Yuuki Nagai, Akihiro Maezawa
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Patent number: 8883288Abstract: An abrasive article includes a backing having a major surface, an adhesion promoting layer overlying the major surface of the backing, and a make layer directly contacting the adhesion promoting layer. The adhesion promoting layer has a thickness of at least about 10 microns and is formed of a polar thermoplastic material, a cross-linkable polymer, or blends thereof.Type: GrantFiled: August 1, 2008Date of Patent: November 11, 2014Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain AbrasifsInventors: Anthony C. Gaeta, Paul S. Goldsmith, Kamran Khatami, Pranjal Shah
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Publication number: 20140329441Abstract: A long-lasting elastic grinding material capable of subjecting surfaces of objects to mirror-finishing, glossifying and the like via blasting thereof. A nucleus (2) is obtained by granulating a crosslinked polyrotaxane compound having self-tackiness and a rubber hardness of 30 or less into particles of a prescribed diameter.Type: ApplicationFiled: December 12, 2012Publication date: November 6, 2014Inventors: Keiji Mase, Shozo Ishibashi
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Publication number: 20140318025Abstract: An abrasive product includes a plurality of abrasive particles and a resin cured with a polythiol group. A method of preparing the abrasive product includes contacting the plurality of abrasive particles with a curable composition that includes a resin and a polythiol group, and curing the curable composition to produce the abrasive product. A method of abrading a work surface includes applying an abrasive product to a work surface in an abrading motion to remove a portion of the work surface. A curable composition includes a formaldehyde resin and a polythiol group. A formaldehyde resin is crosslinked by a polythiol group. A method of crosslinking the formaldehyde resin includes reacting the polythiol group with the formaldehyde resin.Type: ApplicationFiled: July 11, 2014Publication date: October 30, 2014Inventors: Anthony C. GAETA, William C. RICE
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Publication number: 20140311044Abstract: The present invention provides a polishing film with which, even when water containing impurity ions is used as a polishing liquid, the abrasive particles comprising SiO2 are less apt to adhere to the polished surface, e.g., the polished surface of an end of an optical fiber itself, and which is less apt to cause the optical loss attributable to scratches or edge chips in the polished surface. The polishing film hence renders good finish-polishing quality possible. This polishing film is characterized by comprising a substrate and an abrasive layer which has been disposed on a surface of the substrate and which comprises abrasive particles comprising SiO2, a binder resin, and an adhesion inhibitor containing a phosphorus compound.Type: ApplicationFiled: April 18, 2012Publication date: October 23, 2014Applicant: BANDO CHEMICAL INDUSTRIES, LTD.Inventors: Toshikazu Taura, Kazuo Saito, Fumihiro Mukai
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Patent number: 8864859Abstract: The present application relates to polishing pads for chemical mechanical planarization (CMP) of substrates, and methods of fabrication and use thereof. The pads described in this invention are customized to polishing specifications where specifications include (but not limited to) to the material being polished, chip design and architecture, chip density and pattern density, equipment platform and type of slurry used. These pads can be designed with a specialized polymeric nano-structure with a long or short range order which allows for molecular level tuning achieving superior thermo-mechanical characteristics. More particularly, the pads can be designed and fabricated so that there is both uniform and nonuniform spatial distribution of chemical and physical properties within the pads.Type: GrantFiled: November 28, 2007Date of Patent: October 21, 2014Assignee: NexPlanar CorporationInventors: Pradip K. Roy, Manish Deopura, Sudhanshu Misra
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Patent number: 8858664Abstract: An aqueous polymer binder composition adapted for the manufacture of abrasive articles, such as coated abrasive articles, comprising at least one resin containing at least two azetidinium groups and at least one saccharide. The aqueous composition is formaldehyde-free and can further comprise proteins, starch grafted acrylic styrene, co-cross-linking agents, rheology modifiers, fillers, and hydrophobizing agents.Type: GrantFiled: December 13, 2012Date of Patent: October 14, 2014Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain AbrasifsInventors: Clément Houga, Alix Arnaud, Charles G. Herbert
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Publication number: 20140298728Abstract: A carbide composite for a downhole tool may be formed by depositing a first layer on a substrate, and a second layer at least partially adjacent to the first layer. The first and second layers may each include carbides, metal binders, organic binders, or a combination thereof. The first and second carbide layers may have a different particle size, particle shape, carbide concentration, metal binder concentration, or organic binder concentration from one another.Type: ApplicationFiled: April 3, 2014Publication date: October 9, 2014Applicant: Smith International, Inc.Inventor: Madapusi K. Keshavan
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Publication number: 20140290148Abstract: A method for manufacturing an abrasive pad may include steps of forming composite materials using solvent, resin and abrasive materials; forming a plurality of strips including said composite materials through an extruder, so that the abrasive materials protrude on a surface of each stripe; disposing said strips in a container to form an abrasive pad with a predetermined thickness before the strips are solidified; and pressing said abrasive pad to a desired thickness with a pressing device. different abrasive materials can be mixed in the resin and when the abrasive material is extruded to form the strips, a plurality of gaps are formed to generate better ventilation to avoid bacteria growth. Also, the abrasive pad in the present invention can be used in for either family or industry and the manufacturing method in the present invention can extend the lives of the abrasive pad.Type: ApplicationFiled: April 1, 2014Publication date: October 2, 2014Inventor: JHONG-YU HUANG
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Publication number: 20140290147Abstract: A coated abrasive article comprising a backing, an adhesive layer disposed in a discontinuous distribution on at least a portion of the backing, wherein the discontinuous distribution comprises a plurality of adhesive contact regions having at least one of a lateral spacing or a longitudinal spacing between each of the adhesive contact regions; and at least one abrasive particle disposed on each adhesive contact region, the abrasive particle having a tip, and there being at least one of a lateral spacing or a longitudinal spacing between each of the abrasive particles, and wherein at least 65% of the at least one of a lateral spacing and a longitudinal spacing between the tips of the abrasive particles is within 2.5 standard deviations of the mean.Type: ApplicationFiled: March 31, 2014Publication date: October 2, 2014Applicants: Saint-Gobain AbrasifsInventors: Anuj Seth, Darrell K. Everts, Vivek Cheruvari Kottieth Raman
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Patent number: 8840694Abstract: An abrasive article includes a bonded abrasive body having abrasive particles contained within a bond material. The abrasive particles include silicon carbide and are essentially free of carbon-based and boron-based sintering aid materials. In an embodiment, the bond material can include a phenolic resin. In another embodiment, the bonded abrasive body can include an oxide phase disposed interstitially between the silicon carbide abrasive particles. In an additional embodiment, the abrasive particles can consist essentially of silicon carbide and aluminum oxide in a ratio of silicon carbide to alumina of at least about 8:1.Type: GrantFiled: June 30, 2012Date of Patent: September 23, 2014Assignee: Saint-Gobain Ceramics & Plastics, Inc.Inventors: Guan Wang, Yves Boussant-Roux
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Publication number: 20140259960Abstract: A nonwoven, fibrous, article including a plurality of entangled fibers is provided. The fibers can have at least one of an anti-microbial agent or a plurality of abrasive particles. A binder material may bond the fibers to each other at points of crossing and contact between the fibers. The fibers may be made from post-consumer materials, post-industrial materials, heavy denier fibers, biodegradable materials, or heat resistant.Type: ApplicationFiled: March 14, 2014Publication date: September 18, 2014Inventor: Martin J. Rotter
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Publication number: 20140259961Abstract: A method of applying particles to a backing having a make layer on one of the backing's opposed major surfaces. The method including the steps of: supporting the particles on a feeding member having a feeding surface such that the particles settle into one or more layers on the feeding surface; the feeding surface and the backing being arranged in a non-parallel manner; and translating the particles from the feeding surface to the backing and attaching the particles to the make layer by an electrostatic force.Type: ApplicationFiled: May 28, 2014Publication date: September 18, 2014Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Louis S. Moren, Brian G. Koethe, John T. Boden
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Publication number: 20140273773Abstract: The present invention relates to a segment-type chemical mechanical polishing conditioner and a method for manufacturing thereof. The segment-type chemical mechanical polishing conditioner comprises: a bottom substrate having a center protrusion; an abrasive unit binding layer disposed on the outside of the surface of the bottom substrate; and a plurality of abrasive units placed on the abrasive unit binding layer; wherein the abrasive units have a fan-shaped contour and are arrange along the center protrusion of the bottom substrate to form a discontinuous circular contour. Therefore, the present invention can utilize the center protrusion of the bottom substrate to adjust the arrangements of the abrasive units, and effectively improve the problem of thermal deformation of the surface of the chemical mechanical polishing conditioner during heat-hardening process, thereby enhancing the surface flatness of chemical mechanical polishing conditioner.Type: ApplicationFiled: March 14, 2014Publication date: September 18, 2014Applicant: Kinik CompanyInventors: Jui-Lin CHOU, Chia Chun WANG, Chia-Feng CHIU, Chung-Yi CHENG
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Publication number: 20140251952Abstract: In one embodiment, a polishing pad includes a hydrophilic polymer base having a polishing surface, and a metal oxide coating. The metal oxide coating has nanoparticles of metal oxide disposed on the polishing surface. In another embodiment, a processing station includes a rotatable platen, a polishing head, and a precursor delivery system. The polishing head is configured to retain a substrate against the polishing pad. The precursor delivery system is configured to form an oxide coating on a surface of a polishing pad disposed on the platen. In yet another embodiment, a method for modifying a surface of a polishing pad includes wetting the surface of the polishing pad and delivering a precursor to the wetted surface of the polishing pad surface. The method also includes forming a metal oxide coating having nanoparticles of metal oxide on the surface from the precursor.Type: ApplicationFiled: March 8, 2013Publication date: September 11, 2014Inventors: Rajeev BAJAJ, Terrance Y. LEE, Fred C. REDEKER
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Publication number: 20140248823Abstract: The invention provides a chemical-mechanical polishing composition containing (a) abrasive particles, (b) a polymer, and (c) water, wherein (i) the polymer possesses an overall charge, (ii) the abrasive particles have a zeta potential Za measured in the absence of the polymer and the abrasive particles have a zeta potential Zb measured in the presence of the polymer, wherein the zeta potential Za is a numerical value that is the same sign as the overall charge of the polymer, and (iii) |zeta potential Zb|>|zeta potential Za|. The invention also provides a method of polishing a substrate with the polishing composition.Type: ApplicationFiled: March 4, 2013Publication date: September 4, 2014Applicant: CABOT MICROELECTRONICS CORPORATIONInventors: Hon Wu Lau, Haresh Siriwardane