Compositions For Coating And Lining Molds Patents (Class 106/38.22)
  • Patent number: 6338753
    Abstract: Powder product for the protection of molds for centrifugal casting of cast iron tubes, and a method for its production. The powder contains a mixture of a silicon-based inoculating agent and a mineral powder, the silicon-based inoculating product comprising waste masses from synthesis of alkyl- or aryl- halosilanes, from which tin and optionally copper has been removed. The mineral powder may contain at least one material selected from the group consisting of carbon and a fluoride.
    Type: Grant
    Filed: January 5, 1999
    Date of Patent: January 15, 2002
    Assignee: Pechiney Electrometallurgie
    Inventors: Thomas Margaria, Roland Siclari
  • Patent number: 6309577
    Abstract: The process for simultaneously molding and rendering water-repellent molded components made of concrete, mortar, cement or the like consists, before pouring the concrete, cement or the like, in covering the interior of the mold with a composition comprising a resin which is a silicone copolymer in the absence of crosslinking agent of hydrolysable silane type and of curing catalyst in the composition. Molded component thus obtained and compositions for removing from the mold and rendering water-repellent.
    Type: Grant
    Filed: January 11, 1999
    Date of Patent: October 30, 2001
    Assignee: Rhodia Chimie
    Inventors: Eric Garcin, Sandrine Goubet
  • Publication number: 20010031707
    Abstract: This invention provides a release agent for low speed casting, which does not pollute working environment, has a superior running property and lubricating property and further shows a superior cleanability of a die.
    Type: Application
    Filed: January 31, 2001
    Publication date: October 18, 2001
    Applicant: NICCA CHEMICAL CO., LTD.
    Inventors: Yasuyuki Maeda, Dai Masuda
  • Publication number: 20010028132
    Abstract: Method for on-mold surface coating fiberglass-reinforced molded articles during their manufacture with environmentally friendly and physiologically safe thermosetting unsaturated polyester on-mold coating powders which serve as replacements for liquid gel coats. The thermosetting coating powders employed are adapted to cure at low temperatures to avoid causing thermal damage to the heat sensitive plastic molds which must be reused over and over again, and to cure in the presence of atmospheric oxygen to enable over coating with liquid fill resins and fiberglass, which constitute the bulk of the finished article, without having the fill resins bleed through the powder coating film and detrimentally affect the overall quality of the surface finish.
    Type: Application
    Filed: March 16, 2001
    Publication date: October 11, 2001
    Inventors: Edward G. Nicholl, Navin B. Shah
  • Patent number: 6299677
    Abstract: No-bake inorganic binder compositions for binding particulate material and methods for curing such inorganic binders. The inorganic binder compositions are composed of silicate and phosphate components. The no-bake compositions further contain curing catalyst such as a catalyst selected from the group consisting of aliphatic carbonates, cyclic alkylene carbonates, aliphatic carboxylic acid esters, cyclic carboxylic acid esters, phosphate esters and mixtures thereof. The composition produces a binder having the advantageous strength properties of a silicate binder system with the water breakdown properties of a phosphate binder system. Thus, relative to an all-silicate binder system, the present invention has improved mechanical shakeout and improved water collapsibility. Also, relative to conventional all-phosphate binder system, the present invention has superior hot strength, i.e., the foundry cores and molds do not soften at elevated temperatures.
    Type: Grant
    Filed: June 25, 1999
    Date of Patent: October 9, 2001
    Assignee: Borden Chemical, Inc.
    Inventors: Calvin K. Johnson, Kwok-tuen Tse, Leonid S. Zaretskiy, Brian E. Algar
  • Patent number: 6294007
    Abstract: Silicone mold release compositions which are a stable blend of hydrophobic-modified organopolysiloxane and an aminoorgano- or mercaptoorgano-functional organopolysiloxane, or a solution in organic solvent of a stable or unstable blend, provide exceptional mold release properties while retaining paintability of molded parts.
    Type: Grant
    Filed: December 7, 1998
    Date of Patent: September 25, 2001
    Assignee: Wacker Silicones Corporation
    Inventor: Eugene R. Martin
  • Patent number: 6291407
    Abstract: A lubricant for use in lubricating the shot sleeve of a machine for die casting molten metals is in the form of agglomerated particles. The particles have an inorganic high pressure lubricant agglomerated, with a binder material and with an organic material. The solid lubricant is resistant to dusting, caking and breakage, can be fed through an automatic dispensing machine, and combines inorganic and organic materials to achieve excellent lubrication properties. The product has low flash and low smoke release into the environment.
    Type: Grant
    Filed: January 27, 2000
    Date of Patent: September 18, 2001
    Assignee: LaFrance Manufacturing Co.
    Inventor: Mary R. Reidmeyer
  • Patent number: 6274192
    Abstract: A composition useful as a parting agent for concrete formwork is provided. The composition comprises water; a completely or predominantly unsaturated fatty alcohol containing 6 to 22 carbon atoms and with an iodine value of 40 to 200; and an alkyl or alkenyl oligoglycoside having an alkyl or alkenyl group containing 4 to 22 carbon atoms, a sugar unit containing 5 or 6 carbon atoms and a degree of oligomerization of 1 to 10. The parting agent is particularly storage-stable at low temperatures.
    Type: Grant
    Filed: March 11, 1999
    Date of Patent: August 14, 2001
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Juergen Falkowski, Stephan Heck, Norbert Huebner, Ingo Wegener
  • Patent number: 6269862
    Abstract: A method for preparing a mould lubricant for use in direct chill casting of reactive metals, including magnesium, magnesium alloys, aluminum, and aluminum alloys, proceeds through combining a casting lubricant and a gaseous oxidation-inhibiting agent in a vessel external from the mold under vacuum conditions. The casting lubricant is selected from a variety of casting oils and casting greases. The gaseous oxidation-inhibiting agent is selected from a variety of inert gases, including sulfur hexafluoride (SF6).
    Type: Grant
    Filed: August 19, 1999
    Date of Patent: August 7, 2001
    Assignee: Cast Centre Pty Ltd.
    Inventors: Cheryl Richards, Stephen Ronald Peck, Phillip Wilmott Baker
  • Patent number: 6244870
    Abstract: An abutment tooth model which can improve a mold releasable property of the prosthetic restoration (releasability from an abutment tooth model or a mold) and a method of manufacturing such a prosthetic restoration are provided The abutment tooth model is formed of a base material such as an ultra-hard plaster (CaSO4.2H2O), and at least one oxide selected from the group comprising Zr, Y and Ca. The abutment tooth model is formed so as to be slightly larger than the abutment tooth to the extent of the degree of shrinkage of the prosthetic restoration (green body) by taking the curing expansion upon molding and the thermal expansion upon sintering into account The abutment tooth is formed using a compound in which Ti powder or Tn alloy powder is contained as its main component, and the compound is built up onto the abutment tooth model 5 so as to have a desired shape, and thus obtained green body is subjected to a debinding treatment.
    Type: Grant
    Filed: April 6, 1998
    Date of Patent: June 12, 2001
    Assignees: Injex Corporation, Matsumoto Dental College
    Inventors: Masaaki Sakata, Kenichi Shimodaira, Michio Ito
  • Patent number: 6207621
    Abstract: A surface of a given base material is hydrophilized by irradiating, for example, a vacuum ultraviolet light to itself. Then, on the surface is formed a monomolecular film made of a fluoroalkylsilane preferably having at least one of a long fluoroalkyl-chain and a long alkyl-chain which preferably have lengths of not less than 1 nm. Then, the base material and the monocular film are thermally treated and thereby a member having a high lubricative surface can be obtained which has strong couplings between the base material and the molecular film through a dehydrating condensation reaction.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: March 27, 2001
    Assignee: Nagoya University
    Inventors: Osamu Takai, Atsushi Hozumi, Hiroyuki Sugimura