Mineral Fibers (e.g., Slag Wool, Rock Wool, Mineral Wool, Etc.) Patents (Class 501/36)
  • Patent number: 10465586
    Abstract: A fibre mat, for example a monolith support mat or end cone insulator, the mat comprising inorganic fibres having a pressure retained value at 10 minutes at 900° C. of greater than 20 kPa; and preferably a binder. The inorganic fibres comprise X and Y and K2O, the sum of which is greater than 95 wt. % wherein X is the sum of SiO2 and ZrO2 and Y is the sum of Al2O3 and La2O3, wherein ZrO2 and La2O3 is each present in up to 10 wt. % of the total weight of the inorganic fibres.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: November 5, 2019
    Assignee: Thermal Ceramics UK Limited
    Inventors: Gary Jubb, Farid Modarresifar
  • Patent number: 10351465
    Abstract: The present invention provides a glass fiber composition, glass fiber and composite material therefrom. The glass fiber composition comprises the following components expressed as percentage by weight: 58-63% SiO2, 13-17% Al2O3, 6-11.8% CaO, 7-11% MgO, 3.05-8% SrO, 0.1-2% Na2O+K2O+Li2O, 0.1-1% Fe2O3, 0-1% CeO2 and 0-2% TiO2, wherein a weight percentage ratio C1=(MgO+SrO)/CaO is greater than 1. Said composition greatly improves the refractive index of glass, significantly shields against harmful rays for humans and further reduces glass crystallization risk and production costs, thereby making it more suitable for large-scale production with refractory-lined furnaces.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: July 16, 2019
    Assignee: JUSHI GROUP CO., LTD.
    Inventors: Guorong Cao, Wenzhong Xing, Lin Zhang, Guijiang Gu
  • Patent number: 10094614
    Abstract: The disclosure provides a method of forming an acoustical panel base mat, including providing a green board including an alkyl ether sulfate surfactant, wherein the green board includes from about 10 to about 40 wt. % solids, and dewatering the green board slurry to form a dewatered green board, wherein the dewatering comprises supplying hot air and applying a vacuum to the green board.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: October 9, 2018
    Assignee: USG INTERIORS, LLC
    Inventor: Yufeng Xu
  • Patent number: 9933209
    Abstract: The disclosure provides a method of forming an acoustical panel base mat, including providing a green board including an alkyl ether sulfate surfactant, wherein the green board includes from about 10 to about 40 wt. % solids, and dewatering the green board slurry to form a dewatered green board, wherein the dewatering comprises supplying hot air and applying a vacuum to the green board.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: April 3, 2018
    Assignee: USG INTERIORS, LLC
    Inventor: Yufeng Xu
  • Patent number: 9708214
    Abstract: An inorganic fiber containing silica and magnesia as the major fiber components and which further includes intended addition of lithium oxide to improve the thermal stability of the fiber. The inorganic fiber exhibits good thermal performance at 1260° C. and greater, low linear shrinkage, retains mechanical integrity after exposure to the use temperature, and exhibits low biopersistence in physiological fluids. Also provided are thermal insulation product forms prepared from a plurality of the inorganic fibers, methods of preparing the inorganic fiber and of thermally insulating articles using thermal insulation prepared from a plurality of the inorganic fibers.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: July 18, 2017
    Assignee: Unifrax I LLC
    Inventors: Donghui Zhao, Bruce K. Zoitos, Michael J. Andrejcak, Jason M. Hamilton
  • Patent number: 9567256
    Abstract: An inorganic fiber containing silica and magnesia as the major fiber components and which further includes an intended iron oxide additive to improve the dimensional stability of the fiber. The inorganic fiber exhibits good thermal insulation performance at 1400° C. and greater, retains mechanical integrity after exposure to the use temperature, and which remains non-durable in physiological fluids. Also provided are thermal insulation product forms comprising a plurality of the inorganic fibers, methods of preparing the inorganic fiber and of thermally insulating articles using thermal insulation prepared from a plurality of the inorganic fibers.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: February 14, 2017
    Assignee: Unifrax I LLC
    Inventors: Bruce K. Zoitos, Michael J. Andrejcak
  • Patent number: 9416235
    Abstract: Provided is a long-fiber-reinforced thermoplastic resin preform including glass fibers excellent in strength and modulus of elasticity and easily produced and a long-fiber-reinforced resin compact excellent in strength and modulus of elasticity. The long-fiber-reinforced thermoplastic resin preform is produced by cutting to a predetermined length glass fiber bundles impregnated with a thermoplastic resin and holding the thermoplastic resin around the glass fiber bundles, and includes the glass fiber bundles as long fiber bundles. The glass fiber bundles are formed by bundling glass fibers. The glass fibers have a composition wherein the content of SiO2 is 57.0 to 63.0% by mass, the content of Al2O3 is 19.0 to 23.0% by mass, the content of MgO is 10.0 to 15.0% by mass and the content of CaO is 5.5 to 11.0% by mass, and the ratio MgO/CaO is 0.8 to 2.0.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: August 16, 2016
    Assignee: Nitto Boseki Co., Ltd.
    Inventors: Takashi Nonaka, Hiroyasu Aihara
  • Patent number: 9352999
    Abstract: A glass composition including SiO2 in an amount from about 69.5 to about 80.0% by weight, Al2O3 in an amount from about 5.0 to about 18.5% by weight, MgO in an amount from about 5.0 to about 14.75% by weight, CaO in an amount from 0.0 to about 3.0% by weight, Li2O in an amount from about 3.25 to about 4.0% by weight, and Na20 in an amount from 0.0 to about 2.0% by weight is provided. Glass fibers formed from the inventive composition may be used in applications that require high strength, high stiffness, and low weight. Such applications include, but are not limited to, woven fabrics for use in forming wind blades, armor plating, and aerospace structures.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: May 31, 2016
    Assignee: OCV Intellectual Capital, LLC
    Inventors: Douglas A. Hofmann, Peter Bernard McGinnis
  • Patent number: 9127733
    Abstract: A friction material contains: at least one kind of a titanate compound having a shape having a plurality of convex portions; and a bio-soluble inorganic fiber. In the titanate compound, a three-dimensional shape of a particle thereof has a plurality of convex portions.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: September 8, 2015
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Eri Itami, Hiroshi Yamamoto, Takayuki Watanabe, Katsuji Seki
  • Patent number: 9102564
    Abstract: A glass fiber of quaternary composition including SiO2, Al2O3, CaO, and MgO, each present in an amount of at least 5 wt. %, and having less than 3.3 wt. % B2O3, and less than 2.0 wt. % fluorine, wherein: 22.0<MgO+CaO=<35.0 wt %, and 27.0<MgO+Al2O3=<44.0 wt %. all amounts being expressed in weight % with respect to the total weight of the composition. Also disclosed is a method of making composite materials reinforced with such fibers, and their use in applications such as windmill blades, pressure vessels, components in the automotive, machinery, aerospace applications, and such products produced therewith.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: August 11, 2015
    Assignee: 3B FIBREGLASS SPRL
    Inventors: Hendrik Druart, Yves Houet, Dimitri Laurent, Oleg Prokhorenko
  • Patent number: 9029279
    Abstract: A glass composition including SiO2 in an amount from 74.5 to 80.0% by weight, Al2O3 in an amount from 5.0 to 9.5%>> by weight, MgO in an amount from 8.75 to 14.75% by weight, CaO in an amount from 0.0 to 3.0% by weight, Li2O in an amount from 2.0 to 3.25% by weight, Na2O in an amount from 0.0 to 2.0% by weight is provided. Glass fibers formed from the inventive composition may be used in applications that require high strength, high stiffness, and low weight. Such applications include woven fabrics for use in forming wind blades, armor plating, and aerospace structures.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: May 12, 2015
    Assignee: OCV Intellectual Capital, LLC
    Inventors: Douglas Alan Hofmann, Peter Bernard McGinnis
  • Publication number: 20150114265
    Abstract: The invention relates to a method of making a particulate material comprising; providing mineral wool base material in a form having size at least 80% not more than 40 mm, subjecting the mineral wool base material to sintering by use of a pulse combustor and thereby forming a particulate material in the form of particles having size at least 80% not more than 20 mm. An apparatus for carrying out the method comprises means for size reduction of coherent mineral wool substrate and a reaction chamber in communication with a pulse combustor.
    Type: Application
    Filed: October 31, 2014
    Publication date: April 30, 2015
    Inventors: Jean Marie Wilhelmus Cuypers, Andreas Leismann, Stuart Lambie
  • Patent number: 9012342
    Abstract: The invention relates to a melt composition for the production of man-made vitreous fibers and man-made vitreous fibers comprising the following oxides, by weight of composition: SiO2 39-43 weight % Al2O3 20-23 weight % TiO2 up to 1.5 weight % Fe2O3 5-9 weight %, preferably 5-8 weight % CaO 8-18 weight % MgO 5-7 weight % Na2O up to 10 weight %, preferably 2-7 weight % K2O up to 10 weight %, preferably 3-7 weight % P2O5 up to 2% MnO up to 2% R2O up to 10 weight % wherein the proportion of Fe(2+) is greater than 80% based on total Fe and is preferably at least 90%, more preferably at least 95% and most preferably at least 97% based on total Fe.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: April 21, 2015
    Assignee: Rockwool International A/S
    Inventors: Mette Solvang, Svend Grove-Rasmussen, Mathilde Rosendahl Foldschack
  • Patent number: 8987154
    Abstract: An R-glass composition including SiO2 in an amount from 59.0 to 64.5% by weight, Al2O3 in an amount from 14.5 to 20.5% by weight, CaO in an amount from 11.0 to 16.0% by weight, MgO in an amount from 5.5 to 11.5% by weight, Na2O in N an amount from 0.0 to 4.0% by weight, TiO2 in an amount from 0.0 to 2.0% by weight, Fe2O3 in an amount from 0.0 to 1.0% by weight, B2O3 in an amount from 0.0 to about 3.0% by weight, K2O, Fe2O3, ZrO2, and Fluorine, each of which is present in an amount from 0.0 to about 1.0% by weight, and SrO and ZnO, each of which is present in an amount from 0.0 to about 2.0% by weight. In exemplary embodiments, the glass composition does not contain lithium or boron.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: March 24, 2015
    Assignee: OCV Intellectual Capital, LLC
    Inventors: Douglas Hofmann, Peter McGinnis, John Wingert, Anne Berthereau
  • Patent number: 8932968
    Abstract: A biodegradable ceramic fiber composition for a high-temperature thermal insulator is provided. The composition includes: 58 to 67% by weight SiO2, 26 to 34% by weight CaO, 2 to 8% by weight MgO, 0 to 1% by weight Al2O3, 0 to 5% by weight B2O3, 0 to 3% by weight Na2O+K2O, and 1% by weight or less impurities selected from TiO2 and Fe2O3. The composition has a linear thermal contraction coefficient of 3% or less (when maintained at 1100° C. for 24 hours) and a dissolution rate constant of 700 ng/cm2·hr or more in a synthetic body fluid. When compared to known biodegradable ceramic fibers, the ceramic fiber composition also has a significantly improved solubility in a synthetic body fluid so that it can easily be dissolved and removed even when inhaled into the human lungs, thereby reducing harmfulness to the human body.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: January 13, 2015
    Assignee: KCC Corporation
    Inventors: Jin Heuk Lee, Si Moo Lee, Hong Kyeom Kim, Won Sik Jung
  • Patent number: 8916102
    Abstract: Non-woven mat including magnesium aluminum silicate glass fibers and amorphous refractory ceramic fibers, bio-soluble ceramic fibers, and/or heat-treated silica fibers. Embodiments of the nonwoven mat surprisingly have a Resiliency Value after three thermal cycles from 25° C. to 700° C./400° C. of the Real Condition Fixture Test at least 1.1 times greater than the Resiliency Value of a comparable non-woven mat consisting of any individual type of fibers of the non-woven mat. The non-woven mats are useful, for example, in pollution control devices and other thermal insulation applications.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: December 23, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: Anne N. De Rovere, Lahoussaine Lalouch, Richard P. Merry
  • Patent number: 8912107
    Abstract: A composition for preparing high-performance glass fiber by tank furnace production comprising in preferred percentage by weight: 57.5˜62.5% of SiO2, 14.5˜17.5% of Al2O3, 13.5˜17.5% of CaO, 6.5˜8.5% of MgO, 0.05˜0.6% of Li2O, 0.1˜2% of B2O3, 0.1˜2% of TiO2, 0.1˜2% of Na2O, 0.1˜1% of K2O and 0.1˜1% of Fe2O3 and (CaO+MgO)/MgO>3, with the content of at least one of the three components, A2O, B2O3 and TlO2 higher than 0.5%, with the composition yielding glass fiber having improved mechanical property, causing the melting and clarification of glass and forming performance of fiber close to those of boron-free E glass, and facilitating industrial mass production by tank furnace processes with manufacturing costs close to those of conventional E glass.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: December 16, 2014
    Assignee: Jushi Group Co., Ltd.
    Inventors: Yuqiang Zhang, Guorong Cao, Bing Zhang, Lin Zhang, Wenzhong Xing, Guijiang Gu
  • Publication number: 20140357469
    Abstract: A process for the manufacture of mineral wool can involve, first, a melting stage which makes it possible to obtain a molten glass. The chemical composition of the molten glass comprises the following constituents, in a content by weight, within the following limits: SiO2, 39-55%; Al2O3, 16-27%; CaO, 3-35%; MgO, 0-5%; Na2O+K2O, 9-17%; Fe2O3, 0-15%; and B2O3, 0-8%. The melting stage is carried out by electric melting in a furnace that has a tank made of refractory blocks and at least two electrodes immersed in the molten glass. At least one of the refractory blocks, in contact with the molten glass, is made of a material having at least 60% by weight of zirconium oxide and less than 5% by weight of chromium oxide. The molten glass is fiberized to obtain the mineral wool.
    Type: Application
    Filed: January 25, 2013
    Publication date: December 4, 2014
    Applicant: SAINT-GOBAIN ISOVER
    Inventors: Sebastien Beaufils, Richard Clatot
  • Patent number: 8901020
    Abstract: Embodiments of the present invention relate to glass compositions, glass fibers formed from such compositions, and related products. In one embodiment, a glass composition comprises 58-62 weight percent SiO2, 14-17 weight percent Al2O3, 14-17.5 weight percent CaO, and 6-9 weight percent MgO, wherein the amount of Na2O is 0.09 weight percent or less.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: December 2, 2014
    Assignee: PPG Industries Ohio, Inc.
    Inventor: Hong Li
  • Patent number: 8877102
    Abstract: The invention relates to thermally-stable mineral wool which can dissolve in a physiological medium, comprising fibres containing the following constituents, expressed in percentage by weight, namely: 35-60 % SiO2, preferably 39-55 %; 12-27% Al2O3, preferably 16-25%; 0-35% CaO, preferably 3-25%; 0-30% MgO, preferably 0-15%; 0-17% Na2O, preferably 6-12%; 0-17% K2O, preferably 3-12%; 10-17% R2O (Na2O+K2O), preferably 12-17%; 0-5% P2O5, preferably 0-2%; 0-20% Fe2O3; 0-8% B2O3, preferably 0-4%; and 0-3% TiO2, and at least one phosphorous compound that can react with said fibres at a temperature of less than 1000° C. in order to form a coating on the surface thereof. The invention is characterised in that the phosphorous content of said compound, as expressed in phosphorus atom weight, varies between 0.0005%, in particular more than 0.01%, and 1%, in particular less than 0.5%, of the total weight of the fibres.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: November 4, 2014
    Assignee: Saint-Gobain Isover
    Inventors: Jean-Luc Bernard, Jérôme Douce
  • Patent number: 8871662
    Abstract: The subject of the invention is a mineral wool, the glass fibers of which have a chemical composition substantially free of boron oxide and comprising the following constituents in the limits defined below, expressed in percentages by weight: 60 to 75 SiO2; 0 to 4 Al2O3; 17 to 22 Na2O; 5 to 15 CaO; 0 to 2 Fe2O3; and 0 to 3 P2O5.
    Type: Grant
    Filed: September 10, 2007
    Date of Patent: October 28, 2014
    Assignee: Saint-Gobain Isover
    Inventors: Emmanuel Lecomte, Yannick Lefrere
  • Patent number: 8841222
    Abstract: There is provided a glass fiber comprising the SiO2 content is 57.0 to 63.0% by weight; the Al2O3 content is 19.0 to 23.0% by weight; the MgO content is 10.0 to 15.0% by weight; the CaO content is 4.0 to 11.0% by weight; and the total content of SiO2, Al2O3, MgO and CaO is 99.5% by weight or higher based on the total weight.
    Type: Grant
    Filed: May 30, 2011
    Date of Patent: September 23, 2014
    Assignee: Nitto Boseki Co., Ltd.
    Inventors: Takashi Nonaka, Hiroshi Kanno, Takamichi Inaba
  • Patent number: 8822359
    Abstract: The invention relates to mineral fibers formed of a composition comprising the following oxides, by weight of composition: —SiO235 to 43.5% —Al2O3 18 to 22% —Fe2O3 9 to 16% —CaO 8 to 17% —MgO 7 to 15% —Na2O+K2O 1 to 5% —MnO up to 2%.
    Type: Grant
    Filed: July 13, 2010
    Date of Patent: September 2, 2014
    Assignee: Rockwool International A/S
    Inventors: Mette Solvang, Eva Ravn Nielsen, Dorthe Lybye
  • Patent number: 8746012
    Abstract: A process for making a glass product with reduced greenhouse gas emission, comprising: providing a raw material composition comprising at least one silicon dioxide or silicon dioxide-containing compound and at least one pre-reacted compound, wherein the pre-reacted compound comprises an atom of an alkaline earth metal chemically bonded to an oxygen atom, and a silicon atom chemically bonded to the oxygen atom; melting the raw material composition to produce a molten material; and forming the molten material into a glass product.
    Type: Grant
    Filed: November 13, 2007
    Date of Patent: June 10, 2014
    Assignee: Johns Manville
    Inventors: Jon Frederick Bauer, Susan McMillin Gee
  • Patent number: 8728964
    Abstract: The present disclosure relates to a glass composition having a low thermal expansion coefficient, specifically, a glass composition comprising about 55 to less than 64 weight percent of silicon oxide, about 15 to about 30 weight percent of aluminum oxide, about 5 to about 15 weight percent of magnesium oxide, about 3 to about 10 weight percent boron oxide, about 0 to about 11 weight percent calcium oxide, and about 0 to about 2 weight percent of alkali oxide, the remainder being trace compounds of less than about 1 weight percent, is provided. Glass fibers and composite articles formed therefrom are also provided.
    Type: Grant
    Filed: January 11, 2012
    Date of Patent: May 20, 2014
    Assignee: AGY Holding Corp.
    Inventors: Sudhendra V. Hublikar, Robert L. Hausrath, Anthony V. Longobardo
  • Patent number: 8703633
    Abstract: A high-intensity and high-modulus glass fiber is provided. Said fiber is produced by improving the processes, components and proportion of conventional E-glass production process and apparatus. The fiber contains 13% CaO at most, no boron and fluorine, meanwhile ZrO2 and Li2O is first added, B2O3 is first removed, and SO3 is added. The intensity and the modulus of the fiber are slightly lower than those of S-glass or T-glass, but obviously higher than those of E-glass and ECR-glass which are highly produced and widely used or other boron-free glass such as Advantex glass. Besides the intensity, modulus and fatigue resistance, said fiber has obvious advantages over E-glass in heat, acid and alkali resistance. The glass fiber roving made from said fiber has 22% higher tensile strength and 11˜15.7% higher modulus than those of E-glass, and has 16% higher tensile strength and 5˜6% higher modulus than those of ECR-glass.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: April 22, 2014
    Assignee: Chongqing Polycomp Int'l Corporation
    Inventor: Zhiyao Tang
  • Patent number: 8697591
    Abstract: Glass compositions are provided that are useful in a variety of applications including, for example, electronics applications, reinforcement applications, and others. Some embodiments of glass compositions can provide desirable dielectric constants, desirable dissipation factors, and/or desirable mechanical properties while also having desirable fiber forming properties.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: April 15, 2014
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Hong Li, Cheryl A. Richards
  • Patent number: 8697588
    Abstract: Provided is a mineral wool that includes recycled material. The mineral wool is characterized by an acid to base ratio within a specified range. Also provided is a method of manufacturing the mineral wool that includes selection of post-consumer or post-industrial recyclable materials. Application of the mineral wool to products such as an acoustical ceiling panel is also provided.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: April 15, 2014
    Assignee: USG Interiors, Inc.
    Inventor: Martin W. Brown
  • Patent number: 8697590
    Abstract: Glass compositions are provided that are useful in electronic applications, e.g., as reinforcements in printed circuit board substrates. Reduced dielectric constants are provided relative to E-glass, and fiber forming properties are provided that are more commercially practical than D-glass.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: April 15, 2014
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Hong Li, Cheryl A. Richards
  • Patent number: 8683691
    Abstract: The present invention provides a base material for disk rolls which is a platy molded article for obtaining ring-shaped disks for use in a disk roll comprising a rotating shaft and ring-shaped disks fitted thereon by insertion, whereby the peripheral surface of the disks serves as a conveying surface, the base material comprising inorganic fibers having a crystallization temperature of 800-900° C., a filler, and a clay. Also disclosed is a disk roll which comprises disks cut out of the base material.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: April 1, 2014
    Assignee: Nichias Corporation
    Inventors: Masaaki Nakayama, Masatoshi Mitsuta
  • Patent number: 8679993
    Abstract: A glass composition for a glass fiber includes, in terms of oxides by mass %, 45 to 65% of SiO2, 10 to 20% of Al2O3, 13 to 25% of B2O3, 5.5 to 9% of MgO, 0 to 10% of CaO, 0 to 1% of Li2O+Na2O+K2O, SrO, and BaO.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: March 25, 2014
    Assignee: Nippon Electric Glass Co., Ltd.
    Inventors: Kaori Sawanoi, Jiro Abe, Toshikatsu Tanaka
  • Patent number: 8673229
    Abstract: Compositions that include a mixture of biosoluble inorganic fibers and a micaceous binder are described. The compositions can be prepared free of refractory ceramic fibers that are respirable but durable in a physiological medium. The compositions are typically in the form of a sheet material or a paste and can be used, for example, as a protective packing material around the pollution control element or as an insulating material in the end cone region in a pollution control device. Sheet materials formed from the compositions have an area of a X-Y plane that decrease less than about 6 percent when heated to about 900° C.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: March 18, 2014
    Assignee: 3M Innovative Properties Company
    Inventor: Gary F. Howorth
  • Patent number: 8586491
    Abstract: Glass batch compositions for the formation of high-modulus, and high-strength glass fibers as well as fibers suitable for use as textile and reinforcements are disclosed. Fibers formed of the composition are especially suitable for use in high-strength, low-weight applications such as windmill blades and high strength and modulus applications where strength and stiffness are required in the composite. The glass composition is up to about 70.5 weight % SiO2, about 24.5 weight % Al2O3, about 22 weight % alkaline earth oxides and may include small amounts of alkali metal oxides and ZrO2. Additionally, glass fibers formed from the inventive composition are non-corrosive or substantially non-corrosive in nature. Due to the non-corrosive nature of the glass fibers, glass fibers made with the inventive composition may be used in applications where the glass fibers or a composite formed from the glass fibers are in contact with a corrosive substance.
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: November 19, 2013
    Assignee: OCV Intellectual Capital, LLC
    Inventors: Douglas A. Hofmann, Peter B. McGinnis
  • Patent number: 8563450
    Abstract: Glass batch compositions for the formation of high-modulus, and high-strength glass fibers as well as fibers suitable for use as textile and reinforcements are disclosed. Fibers formed of the composition are especially suitable for use in high-strength, low-weight applications such as windmill blades and high strength and modulus applications where strength and stiffness are required in the composite. The glass composition is up to about 70.5 weight % SiO2, about 24.5 weight % Al2O3, about 22 weight % alkaline earth oxides and may include small amounts of alkali metal oxides and ZrO2. Fiberglass-reinforced composite articles such as windmill blades are also disclosed.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: October 22, 2013
    Assignee: OCV Intellectual Capital, LLC
    Inventors: Douglas A. Hofmann, Peter B. McGinnis
  • Patent number: 8551897
    Abstract: Provided are inorganic fibers containing calcium and alumina as the major fiber components. According to certain embodiments, the inorganic fibers containing calcia and alumina are provided with a coating of a phosphorous containing compound on at least a portion of the fiber surfaces. Also provided are methods of preparing the coated and non-coated inorganic fibers and of thermally insulating articles using thermal insulation comprising the inorganic fibers.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: October 8, 2013
    Assignee: Unifrax I LLC
    Inventors: Bruce K. Zoitos, Michael J. Andrejcak, Paul M. Boymel
  • Patent number: 8536079
    Abstract: An unbonded loosefill insulation material formed from a glass batch is provided. The glass batch comprises, in weight percent: 62.0-69.0% of SiO2, 0.0-4.0% of Al2O3, 7.0-12.0% of CaO, 0.0-5.0% of MgO, 3.0-14.0% of B2O3, 13.0-18.0% of Na2O and 0.0-3.0% of K2O. The unbonded loosefill insulation material is configured for distribution in a blowing insulation machine.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: September 17, 2013
    Assignee: Owens Corning Intellectual Capital, LLC
    Inventors: Michael E. Evans, Patrick M. Gavin, Scott E. Colangelo
  • Patent number: 8497219
    Abstract: A highly temperature-resistant and chemically resistant glass and a glass fibre which have an improved UV light transmission, and the use thereof in UV-curable composites are disclosed. The glass/glass fibre according to the invention has a transition temperature >920° C., a light transmission of 80-92%, and consists of 58-62% SiO2, 11.0-15.5% Al2O3, 20-25% CaO, 0.1-0.8% MgO, 0.04-1.2% Na2O, 0.1-1.2 K2O, 0.2-1.8% TiO2, 0.05-0.5% Fe2O3 and 0.002-0.085 Cr2O3.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: July 30, 2013
    Inventor: Gerhard Bürger
  • Patent number: 8476175
    Abstract: The invention relates to glass strands especially for the production of composites having an organic and/or inorganic matrix, the composition of which strands comprises the following constituents in the limits defined below, expressed as percentages by weight: SiO2 50-65% Al2O3 12-23% SiO2 + Al2O3 ??>79% CaO ?1-10% MgO ?6-12% Li2O ?1-3%, preferably 1-2% BaO + SrO ?0-3% B2O3 ?0-3% TiO2 ?0-3% Na2O + K2O ??<2% F2 ?0-1% Fe2O3 ??<1%. These strands are made of a glass offering an excellent compromise between its mechanical properties, represented by the specific Young's modulus, and its melting and fiberizing conditions.
    Type: Grant
    Filed: April 22, 2009
    Date of Patent: July 2, 2013
    Assignee: Saint-Gobain Adfors
    Inventor: Emmanuel Lecomte
  • Patent number: 8476353
    Abstract: Provided are an amorphous polyamide resin composition having high transparency, and is excellent in heat resistance and stiffness, and a molded product thereof. The glass filler contains, expressed in terms of oxides by mass %, 68 to 74% of silicon dioxide (SiO2), 2 to 5% of aluminum oxide (Al2O3), 2 to 5% of boron oxide (B2O3), 2 to 10% of calcium oxide (CaO), 0 to 5% of zinc oxide (ZnO), 0 to 5% of strontium oxide (SrO), 0 to 1% of barium oxide (BaO), 1 to 5% of magnesium oxide (MgO), 0 to 5% of lithium oxide (Li2O), 5 to 12% of sodium oxide (Na2O), and 0 to 10% of potassium oxide (K2O), where a total amount of lithium oxide (Li2O), sodium oxide (Na2O), and potassium oxide (K2O) is 8 to 12%.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: July 2, 2013
    Assignee: Asahi Fiber Glass Company, Limited
    Inventors: Hideyuki Higashiyama, Keiji Sekine
  • Patent number: 8418505
    Abstract: A glass composition useful in preparing fiberglass comprises 12 to 25 weight % CaO; 12 to 16 weight % Al2O3; 52 to 62 weight % SiO2; 0.05 to 0.8 Fe2O3; and greater than 2 up to about 8 weight % alkali metal oxide.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: April 16, 2013
    Assignee: Johns Manville
    Inventors: Jeffrey Shock, Elam Leed, Jonathan McCann
  • Patent number: 8367571
    Abstract: The invention relates to reinforcing glass strands, the composition of which comprises the following constituents within the limits defined below expressed as percentages by weight: SiO2 62-72% Al2O3 ?2-10% CaO ?7-20% MgO 1-7% Na2O + K2O + Li2O ??10-14.5% Li2O 0-2% BaO + SrO + ZnO 0-4% B2O3 0-4% F2 0-2% As2O3 ??0-0.15% These strands are composed of a low-cost glass offering an excellent compromise between the mechanical properties represented by the tensile strength and the fiberizing conditions. The invention also relates to the composites based on organic and/or inorganic material(s) and the aforementioned glass strands.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: February 5, 2013
    Assignee: Saint-Gobain Technical Fabrics Europe
    Inventors: Anne Berthereau, Emmanuelle Picard, Jerome Lalande
  • Patent number: 8341978
    Abstract: A method of forming high strength glass fibers in a refractory lined glass melter is disclosed. The refractory lined melter is suited to the batch compositions disclosed for the formation high modulus, and high-strength glass fibers. The glass composition for use in the method of the present invention is up to about 70.5 Weight % SiO2, 24.5 weight % Al2O3, 22 weight % alkaline earth oxides and may include small amounts of alkali metal oxides and ZrO2. Oxide based refractories included alumina, chromic oxide, silica, alumina-silica, zircon, zirconia-alumina-silica and combinations thereof. By using oxide based refractory lined furnaces the cost of production of glass fibers is substantially reduced in comparison with the cost of fibers using a platinum lined melting furnace. Fibers formed by the present invention are also disclosed.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: January 1, 2013
    Assignee: OCV Intellectual Capital, LLC
    Inventors: Douglas A. Hofmann, Peter B. McGinnis
  • Patent number: 8338319
    Abstract: A composition for the manufacture of high strength glass fibers suitable for manufacture in a refractory lined glass melter is disclosed. The glass composition of the present invention includes 64-75 weight % SiO2, 16-24 weight % Al2O3, 8-11 weight % MgO and 0.25 to 3.0 weight % R2O where R2O is the sum of Li2O and Na2O. A composition of the present invention includes 64-75 weight % SiO2, 16-24 weight % Al2O3, 8-11 weight % MgO and 0.25 to 3.0 weight % Li2O. Another composition includes 68-69 weight percent SiO2, 20-22 weight percent Al2O3, 9-10 weight percent MgO and 1-3 weight percent Li2O. By using oxide based refractory lined furnaces the cost of production of glass fibers is substantially reduced in comparison with the cost of fibers using a platinum lined melting furnace. Fibers formed by the present invention are also disclosed. The fibers have a fiberizing temperature of less than 2650° F., a ?T of at least 80° F.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: December 25, 2012
    Assignee: OCV Intellectual Capital, LLC
    Inventors: Peter Bernard McGinnis, Douglas A. Hofmann
  • Patent number: 8334228
    Abstract: This invention involves a fiberglass composition containing the following components: SiO2, Al2O3, CaO, MgO, B2O3, F2, TiO2, K2O, Na2O, Fe2O3 and SO3. The weight percentage of each of the components are as follows: SiO2 58˜65%, CaO 20˜26%, Al2O3 9˜17%, MgO 0.5˜1%, B2O3 0˜5%, F2 0˜1%, TiO2 0.1˜1%, K2O+Na2O 0˜0.8%, Fe2O3 0.1˜0.5%, SO3 0˜0.6%. The ternary system, SiO2—Al2O3—CaO, is basis of the fiberglass composition in this invention, which also has low quantities of MgO and B2O3. In addition, the total amount of alkaline earth oxide and the proportional relationship between MgO and CaO are rationally designed, which helps to improve the mechanical strength, heat resistance, and chemical stability of the glass. It also has excellent manufacturing performance. Moreover, the raw materials of the fiberglass composition in this invention are low in cost, and the invention meets environmental protection requirements.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: December 18, 2012
    Assignee: Jushi Group Co. Ltd.
    Inventors: Yuqiang Zhang, Guorong Cao, Bing Zhang, Lin Zhang, Wenzhong Xing, Guijiang Gu
  • Patent number: 8318620
    Abstract: The invention relates to a glass yarn capable of being obtained by a method consisting of mechanically drawing molten glass threads flowing from orifices disposed at the base of a die, of which the chemical composition is substantially free from boron oxide and comprises the following constituents within the limits defined hereinafter expressed in percentages by weight: SiO2 40 to 50 Al2O3 18 to 28 CaO 4 to 15 MgO 0 to 6 Na2O 10 to 14 Na2O + K2O + Li2O 13 to 20 It also relates to composites containing such yarns.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: November 27, 2012
    Assignee: Saint-Gobain Technical Fabrics Europe
    Inventors: Anne Berthereau, Jerome Lalande
  • Publication number: 20120270718
    Abstract: A centrifuge to rotate about a rotation axis, the centrifuge including: an annular wall pierced with a plurality of holes, the annular wall having the rotation axis as its axis of symmetry; and a row of one continuous relief or of discontinuous reliefs, situated on an outer surface of the centrifuge, on the annular wall and/or above and close to the annular wall when the centrifuge is in a centrifuging position, the row being horizontal or inclined at an angle of more than 0° and less than 90° relative to the horizontal when the centrifuge is in the centrifuging position. The centrifuge makes it possible to improve energy consumption of a device for forming mineral fibers furnished with the centrifuge.
    Type: Application
    Filed: December 10, 2010
    Publication date: October 25, 2012
    Applicant: SAINT-GOBAIN ISOVER
    Inventors: Oleg Boulanov, Jean-Luc Bernard
  • Patent number: 8252707
    Abstract: A composition for the manufacture of high strength glass fibers suitable for manufacture in both precious metal lined furnaces and refractory lined glass melter is disclosed. The glass composition of the present invention includes 62-68 weight % SiO2, 22-26 weight % Al2O3, 8-15 weight % MgO and 0.1 to 3.0 weight % Li2O. One suitable composition of the present invention includes 64-66.5 weight percent SiO2, 23-24.5 weight percent Al2O3, 9-11 weight percent MgO and 0.3-0.35 weight percent Li2O. Another suitable composition includes 66.5 weight percent SiO2, 23.4 weight percent Al2O3, 9.8 weight percent MgO and 0.3 weight percent Li2O. Yet another suitable composition is about 66 weight percent SiO2, about 23 weight percent Al2O3, about 10.5 weight percent MgO and about 0.3 weight percent Li2O. Fibers formed by the present invention are also disclosed. The fibers have a fiberizing temperature of less than 2650° F., a ?T of at least 25° F.
    Type: Grant
    Filed: December 24, 2008
    Date of Patent: August 28, 2012
    Assignee: OCV Intellectual Capital, LLC
    Inventors: Peter B. McGinnis, Douglas Hofmann
  • Patent number: 8173560
    Abstract: The invention relates to a glass strand, the chemical composition of which is substantially free of boron oxide and comprises the following constituents, in the limits defined below expressed as percentages by weight: SiO2 55 to 65 Al2O3 ?9 to 16 CaO 15 to 26 MgO 1 to 5 BaO + SrO 0.5 to 5?? Na2O + K2O + Li2 O 0 to 2 TiO2 0 to 1 ZnO 0 to 2 ZrO2 0 to 2. It also relates to composites comprising such strands.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: May 8, 2012
    Assignee: Saint-Gobain Technical Fabrics Europe
    Inventors: Anne Berthereau, Emmanuel Lecomte
  • Patent number: 8105675
    Abstract: There is disclosed a honeycomb structure 1 which is made of a ceramic material and in which a plurality of honeycomb segments 12 having cell structures 5 and porous outer walls 7 on outer peripheries of the cell structures 5 are integrated by bonding the outer walls 7 to one another with a bonding material, each of the cell structures being provided with a plurality of cells 3 constituting fluid channels divided by porous partition walls 2, wherein the bonding material contains a bio-soluble fiber. The honeycomb structure 1 of the present invention has a performance equivalent to that of a honeycomb structure in which a heretofore used ceramic fiber is contained.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: January 31, 2012
    Assignees: NGK Insulators, Ltd., NGK Adrec Co., Ltd.
    Inventors: Naoshi Masukawa, Atsushi Watanabe, Shuichi Ichikawa, Osamu Yamakawa, Tetsuhiro Honjo
  • Patent number: 8093164
    Abstract: The present invention relates to a high-temperature resistant inorganic fiber which is based on silica and has improved mechanical properties, a process for producing it and also specific uses thereof and products derived therefrom. The fiber of the invention has the following composition: 81-94% by weight of SiO2, 6-19% by weight of Al2O3, 0-12% by weight of ZrO2, 0-12% by weight of TiO2, 0-3% by weight of Na2O and not more than 1.5% by weight of further components.
    Type: Grant
    Filed: July 7, 2008
    Date of Patent: January 10, 2012
    Assignee: Belchem Fiber Materials GmbH
    Inventors: Robin Richter, Folker Steden, Sven Lehr