From Continuously Cast Material Patents (Class 264/144)
  • Patent number: 9272289
    Abstract: An industrially highly useful CNT separation method is provided whereby metallic CNTs and semiconducting CNTs can be efficiently separated and purified in large quantities in a short time period from CNTs containing these carbon nanotubes, using inexpensive equipment and in simple steps, and whereby metallic CNTs and semiconducting CNTs can be separated at low cost. The CNT separation method includes adding a CNT dispersion to a powder-charged separation vessel to selectively adsorb the semiconducting CNTs to the powder, and eluting the semiconducting CNTs adsorbed to the powder after collecting the metallic CNTs.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: March 1, 2016
    Inventors: Takeshi Tanaka, Hiromichi Kataura
  • Patent number: 9039948
    Abstract: The invention relates to a method and a device for producing and treating plastic pellets. According to said method, a melt of the plastic material is granulated to give pellets, the pellets are cooled in a cooling fluid, the pellets are separated from the cooling fluid and the pellets are crystallized. The device according to the invention is characterized by comprising a control unit which monitors the crystallization step and controls the method in such a manner that, in case of a disturbance of crystallization, the pellets are supplied to an intermediate storage alter separation of the pellets from the cooling fluid and, as soon as the disturbance is removed, the pellets temporarily stored in the intermediate storage are supplied to crystallization and are crystallized.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: May 26, 2015
    Assignees: Rieter Automatik GMBH, Buhler Thermal Processes AG
    Inventors: Frank Glöckner, Fernando Eusebio, Brent Allen Culbert, Franziska Morganti
  • Publication number: 20150065680
    Abstract: There is provided flakes of an ester mixture comprising bis-(hydroxyethyl)-terephthalate, dimers, tamers, tetramers, pentamers and higher oligomers of ethane-1,2-diol and terephthalate acid.
    Type: Application
    Filed: April 18, 2013
    Publication date: March 5, 2015
    Inventor: Shankar Devraj
  • Patent number: 8852476
    Abstract: A process for forming thin flake particles includes coating the liquid release agent over a base substrate, forming a multilayer structure by depositing a thin film over the liquid release agent, collecting the multilayer structure, and separating the thin flake from the multilayer structure using a suitable solvent. The liquid release agent comprises a curable compound that can form a solidified layer less than 0.001 mm thick onto which the thin film can be deposited. Separation requires little solvent because of the thinness of the solidified layer.
    Type: Grant
    Filed: February 26, 2009
    Date of Patent: October 7, 2014
    Inventor: Wolfgang Decker
  • Patent number: 8852490
    Abstract: Systems and methods for a concrete apparatus with incorporated lifter are provided. A concrete apparatus is formed by placing a reinforcement system in a mold. The reinforcement system comprises a lifter. Concrete is poured into the mold such that the lifter protrudes from the poured concrete. After the concrete has hardened and the mold is removed, the lifter is used to carry and position the concrete apparatus. After the concrete apparatus is positioned, the lifter is removed at the circumference of the concrete apparatus leaving no holes, thereby eliminating water leakage due to lifting methods.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: October 7, 2014
    Inventor: Pat Halton Fore, III
  • Patent number: 8632709
    Abstract: A process for efficiently producing a water-dispersible particulate agricultural-chemical composition having improved disintegrability/dispersibility in water, the composition having a particular size in the range of 50-1,000 ?m. The process is characterized by comprising the following steps (a) to (e): (a) a step of kneading an agricultural-chemical active ingredient, a surfactant, and water; (b) a step of extruding the resultant mixture through a screen having pores 600-2,000 ?m in diameter to form granules; (c) a step of drying the granules; (d) a step of rotating two toothed rolls with irregularities on the surface arranged in parallel to each other, and leading the dried granules to pass between the toothed rolls thereby pulverizing the granules; and (e) a step of sieving the pulverized granules.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: January 21, 2014
    Assignees: Kumiai Chemical Industry Co., Ltd., Nippon Soda Co., Ltd.
    Inventors: Shigeki Fujita, Kazunori Kurita
  • Patent number: 8323542
    Abstract: A method of forming pigment flakes includes using a deposition substrate having a plurality of regions; some of the regions are raised or lowered so that there is a level difference between each two adjacent regions. A coating deposited onto this substrate breaks along region borders when it is separated from the substrate. In one embodiment, the substrate includes first and second regions, wherein each of the first regions is in an abutting relationship with at least one of the second regions. All the first regions are at a first level and all the second regions are at a second level, and the difference between the first and second levels is greater than a predetermined value. The first and second regions are preferably square-shaped regions for manufacturing square flakes with practically no debris.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: December 4, 2012
    Assignee: JDS Uniphase Corporation
    Inventors: Alberto Argoitia, Vladimir P. Raksha, Cornelis Jan Delst
  • Patent number: 8303872
    Abstract: The present invention relates to a process for preparing ethylene urea in solid form, in which a water-comprising product melt of ethylene urea is cooled on a breaking-up apparatus and the water content of the solid obtained is from 5 to 15% by weight. Furthermore, the invention relates to ethylene urea as solid prepared by a process according to the invention, wherein the water content of the solid is from 5 to 15% by weight and the solid displays lasting powder flow.
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: November 6, 2012
    Assignee: BASF SE
    Inventors: Henry Szafranski, Stefanie Werland, Peter Raatz, Joachim Simon
  • Publication number: 20120231259
    Abstract: An apparatus is provided for harvesting a carbon nanotube array from a substrate. The apparatus includes a peeler that peels the carbon nanotube array from the substrate and a support that receives the carbon nanotube array peeled from the substrate. In addition the apparatus includes a drawing device that simultaneously draws the carbon nanotube array from the substrate onto the support as the carbon nanotube array is peeled from the substrate. The peeler and drawing device are synchronized in operation so that as a given length of carbon nanotube array is peeled from the substrate, that same given length of carbon nanotube array is drawn onto the support.
    Type: Application
    Filed: March 10, 2011
    Publication date: September 13, 2012
    Inventors: Mathew C. Weisenberger, John D. Craddock
  • Patent number: 8211345
    Abstract: This invention provides an optical film having a reduced thickness and an increased width, which is free from bleedout with the elapse of time (during storage) in a continuous wound state, a method for manufacturing an optical film, and a polarizing plate using the optical film. The optical film is a plasticizer-containing optical film having an overall width of 1500 mm to 4000 mm produced by a solution casting method. The amount of the plasticizer present in the center portion in the surface side of the optical film is determined as value A by TOF-SIMS. The amount of the plasticizer present in the center portion in the back side is determined as value B by the TOF-SIMS. Value X is determined by formula 1 based on the values A and B. The amount of the plasticizer present in the end portion in the surface side of the optical film is determined as value A? by TOF-SIMS, and the amount of the plasticizer present in the end portion of the back side is determined as value B? by the TOF-SIMS.
    Type: Grant
    Filed: July 12, 2007
    Date of Patent: July 3, 2012
    Assignee: Konica Minolta Opto, Inc.
    Inventor: Masahiro Shibuya
  • Publication number: 20120047634
    Abstract: Embodiments of the present disclosure include helmet liners, helmets, helmets with deflective structures, helmets with thermochromic features, and methods of making helmet liners, helmets, helmets with deflective structures, and helmets with thermochromic features.
    Type: Application
    Filed: May 14, 2010
    Publication date: March 1, 2012
    Inventor: Uday Vaidya
  • Publication number: 20120007271
    Abstract: A process for forming thin flake particles includes coating the liquid release agent over a base substrate, forming a multilayer structure by depositing a thin film over the liquid release agent, collecting the multilayer structure, and separating the thin flake from the multilayer structure using a suitable solvent. The liquid release agent comprises a curable compound that can form a solidified layer less than 0.001 mm thick onto which the thin film can be deposited. Separation requires little solvent because of the thinness of the solidified layer.
    Type: Application
    Filed: February 26, 2009
    Publication date: January 12, 2012
    Inventor: Wolfgang Decker
  • Publication number: 20110121483
    Abstract: The invention relates to a device for producing pellets from plastic material or from material to be pelletized. Said device comprises a continuous casting device (1) from which at least one strand (2) of the material to be pelletized is issued, and a belt conveyor (3) comprising at least one conveying belt (4) on which the strand (2) can be fed to a pelletizer (5), said pelletizer breaking the strand up into pellets (6). The invention is characterized in that the belt conveyor (3) has a switchable direction of conveyance of the conveying belt (4), a direction of feed conveyance towards the pelletizer (5) and a direction of discharge conveyance away from the pelletizer (5). The invention also relates to a method for operating said device.
    Type: Application
    Filed: October 15, 2008
    Publication date: May 26, 2011
    Applicant: Automatik Plastics Machinery GMBH
    Inventors: Sven Fenchel, Jochen Scheurich
  • Patent number: 7425290
    Abstract: A compacted particulate polymer additive composition in a dry granular form formed from a substantially uniform mixture of the following components: (a) at least one particulate sterically-hindered phenolic compound; and (b) one or more particulate polymer additives other than a sterically-hindered phenolic compound; wherein the particles of said composition are held together in compacted dry granular form exclusively or substantially exclusively by contact with dried surfaces of in situ desolvated particles from particles of one or more at least partially solvated components of (a), and optionally by contact with dried surfaces of in situ desolvated particles from particles of one or more at least partially solvated components of (b). Compositions of this type except that there is no component (b) are also described.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: September 16, 2008
    Assignee: Albemarle Corporation
    Inventor: John Semen
  • Patent number: 7157030
    Abstract: This invention relates to filtration particulate material for the removal of compounds from fluid streams. More particularly, this invention relates to a composition for filtration particulate material, method of manufacture of the filtration particulate material, filtration particulate material and the use of the filtration particulate material for the removal of compounds from fluid streams.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: January 2, 2007
    Inventor: John Charles Rintoul
  • Patent number: 6838030
    Abstract: A method of manufacturing molded materials of a thermosetting resin composition in a method of granulating a molding material of the thermosetting resin composition, in which a sheet producing step for transferring the molding material in a molten state to a subsequent stage while processing the same material into a sheet type material of a predetermined thickness, a first processing step for cutting the sheet type material, which has thus been transferred to a stage for carrying out this step, in parallel with the transfer direction thereof to a predetermined width, and thereby obtaining a processed body of laterally arranged rows of elongated string-like materials, a step of cutting the processed body, which is obtained in the first processing step, to a predetermined length with respect to the transfer direction, a transfer direction changing step for transferring the processed body, which has been subjected to the cutting step, to a subsequent stage by changing the transfer direction of the processed body
    Type: Grant
    Filed: December 31, 2001
    Date of Patent: January 4, 2005
    Assignee: Sumitomo Bakelite Company Limited
    Inventors: Osamu Hashimoto, Kazuyuki Najima, Ryuji Nozaki
  • Patent number: 6749936
    Abstract: Achromatic multilayer diffractive pigment flakes and foils are provided having diffractive structures thereon. The diffractive pigment flakes can have a symmetrical stacked coating structure on opposing sides of a reflective core layer, an asymmetrical stacked coating structure on one side of a reflective layer, or can be formed with one or more encapsulating coatings around the reflective core layer. The diffractive pigment flakes can be interspersed into liquid media such as paints or inks to produce diffractive compositions for subsequent application to a variety of objects. The foils can be laminated to various objects or can be formed on a carrier substrate. The diffractive pigment flakes and foils can be formed with a variety of diffractive structures thereon to produce selected optical effects. The diffractive foils and diffractive compositions applied to an object exhibit an iridescent diffractive effect over an achromatic background.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: June 15, 2004
    Assignee: Flex Products, Inc.
    Inventors: Alberto Argoitia, Paul T. Kohlmann, Matthew R. Witzman, Paul G. Coombs, Charles T. Markantes, Richard A. Bradley, Jr.
  • Patent number: 6579965
    Abstract: For the anionic polymerization of lactams: (a) (i) a catalyst capable of creating a lactamate and (ii) a regulator chosen from amides of formula R1-NH—CO-R2, in which R1 can be substituted by an R3-CO—NH— or R3-0— radical and in which R1, R2 and R3 denote an aryl, alkyl or cycloalkyl radical, are dissolved in the molten lactam, (a1) the solution from stage (a) is cooled, optionally to the solid state in a form which can be divided, (a2) the product from stage (a1) is optionally reheated to a temperature below the polymerization temperature of the lactam, (a3) optionally, the product from stage (a1) is reheated and is maintained at a temperature between the melting temperature of the lactam and 15° C. above, and (b) the produce from any one of stages (a1), (a2) or (a3) is introduced into a mixing device or mold and is then heated to a temperature sufficient to obtain the bulk polymerization of the lactam.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: June 17, 2003
    Assignee: Atofina
    Inventors: Nicola Hoogen, Andreas Wollny, Heike Faulhammer, Rolf Muelhaupt
  • Patent number: 6221294
    Abstract: Cyanuric chloride moldings, especially tablets and flakes, have advantages over powders in ease of handling. The moldings are produced by droplet or strip application of molten cyanuric chloride on to a surface and dissipation of the latent heat of fusion by cooling the surface or contacting the melt applied as droplets or strips with a cooling gas.
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: April 24, 2001
    Assignee: Degussa Aktiengesellschaft
    Inventors: Ralf Goedecke, Klaus Hentschel, Rolf-Dieter Möller, Knut Ehrhardt, Manfred Schmidt, Michael Kissner
  • Patent number: 5922465
    Abstract: The invention relates to platelet-shaped interference pigments for effect paints for painting objects of daily use, especially vehicle bodies, with the interference pigments including liquid crystal polymers (LCP) with main and/or side groups--mesogens--which are arranged at least approximately chirally-nematically or the like. In order to be able to paint different colored backgrounds in a covering fashion using the transparent interference pigments, the interference pigments are built up in several layers and also have at least one and preferably two interfering layer(s) of liquid crystal polymers and even of a single, preferably centrally located, light-absorbent layer, with the light-absorbent layer absorbing at least a portion of the visible light spectrum. Advantageously the light-absorbent layer can absorb light in the entire visible light spectrum, in other words appear black.
    Type: Grant
    Filed: May 19, 1997
    Date of Patent: July 13, 1999
    Assignee: Daimler-Benz AG
    Inventors: Michael Gailberger, Katja Strelzyk, Karl Holdik, Fritz Dannenhauer, Erik Grosse, Andreas Stohr
  • Patent number: 5888444
    Abstract: The invention relates to an effect paint for objects to be painted, as well as to a process for making the effect paint, wherein the effect paint comprises pigments. The pigments, produced by fragmenting a wiped and cross-linked film, are added to a starting paint of a paint coat of the object and result in a color effect which depends on the viewing angle, and are also provided with a marking used to recognize and characterize the object.
    Type: Grant
    Filed: June 13, 1997
    Date of Patent: March 30, 1999
    Assignee: Mercedes-Benz Aktiengesellschaft
    Inventors: Fritz Dannenhauer, Karl Holdik
  • Patent number: 5747634
    Abstract: A continuous process for activated anionic lactam polymerization is proposed, wherein a liquid system is employed, which simultaneously contains activator and anionic catalyst for the polymerization of lactam.
    Type: Grant
    Filed: January 21, 1997
    Date of Patent: May 5, 1998
    Assignee: EMS-Inventa AG
    Inventors: Eduard Schmid, Roman Eder
  • Patent number: 5660781
    Abstract: Low-firing glass ceramic green sheets useful in the production of glass ceramic multilayer substrates are prepared from a coarse raw powder material comprising a B.sub.2 O.sub.3 -containing glass powder. The coarse raw powder material is initially subjected to wet grinding, either in an alcohol-free organic solvent in the presence or absence of an organic binder, or in an alcohol-containing organic solvent in the presence of an organic binder, until the powder is comminuted to a particle size suitable for tape casting. The wet-ground powder is slurried with an organic solvent and an organic binder, and the slurry is cast into sheets. The resulting green sheets have improved elongation and can be punched to form fine through holes with a small pitch.
    Type: Grant
    Filed: June 23, 1995
    Date of Patent: August 26, 1997
    Assignees: Sumitomo Metal Industries, Ltd., Sumitomo Metal Ceramics, Inc.
    Inventors: Yoichi Moriya, Yoshiaki Yamade, Koichi Uno
  • Patent number: 5599412
    Abstract: In color printing, and in the fine arts, cholesteric liquid crystal (CLC) color inks are known to possess much higher color saturation and brightness than conventional pigment and dyed based inks. However, prior art CLC ink formulations are inconvenient because in the liquid phase they have to be confined in cells, and in the solid phase, they have to be applied at high temperature, and have to be aligned by some means to produce the optimum color. This invention solves the problem encountered in the CLC prior art, by making pre-aligned CLC platelets or flakes of appropriate thickness and size and mixing them in appropriate host fluids producing a novel CLC ink which can be applied at room temperature and without the need for alignment. The new pre-aligned room temperature CLC ink can be used as a substitute for conventional inks in almost all printing and plotting, and manual drawing and painting. Using the notch filter CLC platelets, the brightness is further enhanced.
    Type: Grant
    Filed: June 27, 1994
    Date of Patent: February 4, 1997
    Inventor: Sadeg M. Faris
  • Patent number: 5424119
    Abstract: A polymeric sheet comprising a layer of polymeric material having a first and second parallel surfaces. A plurality of oriented multilayer interference thin film flakes are disposed in the layer of polymeric material. The flakes have first and second parallel surfaces and a width and a thickness and have an aspect ratio of at least 2:1 for the width with respect to the thickness.
    Type: Grant
    Filed: February 4, 1994
    Date of Patent: June 13, 1995
    Assignee: Flex Products, Inc.
    Inventors: Roger W. Phillips, Paul G. Coombs, Patrick K. Higgins, Charles T. Markantes
  • Patent number: 5304331
    Abstract: The present invention relates to an apparatus and method for extruding a Bingham plastic-type material through a die having an auger rotationally mounted therein.
    Type: Grant
    Filed: December 17, 1992
    Date of Patent: April 19, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: William K. Leonard, Donley D. Rowenhorst, Jerald A. Scherger, Donald R. Winberg
  • Patent number: 5108680
    Abstract: Adhesive resin particles of adhesive resin having a plasticizing range between and C., as well as a method of producing the particles. To prevent the particles from sticking together or caking during storage, they are in the form of coated particles, with at least one polyethylene hard wax having a solidification point of C. being added to the adhesive resin to coat the same.
    Type: Grant
    Filed: July 5, 1991
    Date of Patent: April 28, 1992
    Assignee: Continental Aktiengesellschaft
    Inventors: Karl-Hans Menting, Hendrik Stevens
  • Patent number: 5106560
    Abstract: A method for producing para-aramid pulp by using gravity-induced orientation of anisotropic para-aramid solutions. The solutions are those in which the para-aramid is still actively polymerizing. The process can be practiced on immobile inclined supports or on a moving inclined support in the form of a conveyer.
    Type: Grant
    Filed: August 9, 1990
    Date of Patent: April 21, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Joseph J. Duffy, Jon D. Hartzler, Robert A. Marin, Richard D. Mules
  • Patent number: 4927557
    Abstract: Flakes of a hydrophilic solid organic material, e.g., polyethylene glycol are formed from a melt of said solid organic material on a belt cooler. The process is improved by wetting the belt cooler with water and/or an organic, low molecular weight, hydrophilic liquid to maintain contact between flake and belt during rapid cooling.
    Type: Grant
    Filed: November 21, 1988
    Date of Patent: May 22, 1990
    Assignee: The Proctor & Gamble Company
    Inventors: Jack W. Revis, John A. Sagel, Daniel I. Ostendorf
  • Patent number: 4906419
    Abstract: Device and process for fast cooling and solidifying of molten materials with a metal oxide base. The device comprises two metal cylinders with parallel axes, which rotate in opposite directions and are cooled. The metal cylinders exhibit a corrugated surface, and an elevation on the surface of one cylinder in each case engages in the recess of the surface of the other cylinder with formation of a gap. The melt is poured into the gap, drawn by force and simultaneously cooled under pressure.
    Type: Grant
    Filed: November 18, 1988
    Date of Patent: March 6, 1990
    Assignee: Lonza-Werke G.m.b.H.
    Inventors: Erwin Haas, Heinz-Withold Schmitz
  • Patent number: 4820773
    Abstract: Improved water-absorbing, crosslinked acrylate resins are prepared by aqueous polymerization of (A) acrylic acid neutralized 70 to 100 mole percent for example with ammonia and/or caustic alkali and/or an amine; with (B) acrylamide in a mole ratio of 70 to 100 mole percent (A) to 30:0 mole percent (B); and (C) a water miscible or a water soluble polyvinyl monomer in the presence of (D) a styrene-maleic anhydride copolymer, neutralized 70 to 100 mole percent for example with ammonia, and/or caustic alkali and/or an amine, in an amount of 1% to 25% based on the weight of acrylic acid or acrylate, such that the amount of (C) is 0.001 to 0.6 weight percent based on the total weight of (A), (B), (C) and (D). In addition, surface treating the water-absorbing crosslinked acrylate resins with a polyquaternary amine substantially further increases both the rate of water absorption and the quantity of water absorbed and retained by the resin.
    Type: Grant
    Filed: June 25, 1987
    Date of Patent: April 11, 1989
    Assignee: American Colloid Company
    Inventors: William Alexander, Mark Anderson, Barbara R. Regan
  • Patent number: 4795604
    Abstract: A method for molding 1,4,4a,9a-tetrahydroanthraquinone by cooling and solidifying a melt of 1,4,4a,9a-tetrahydroanthraquinone, which comprises contacting the melt with a cooling surface of a temperature of from about to about C. for solidification, and peeling off the solidified product.
    Type: Grant
    Filed: June 10, 1987
    Date of Patent: January 3, 1989
    Assignee: Kawasaki Kasei Chemicals Ltd.
    Inventors: Katsumi Matsuzaki, Kenji Usui, Seishi Ikemoto
  • Patent number: 4734238
    Abstract: The invention relates to a process for producing a powder of a cationic polymer by spreading on a moveable carrier a layer of an aqueous solution of a vinyl monomer, carrying out continuous polymerization followed by peeling off hydrous polymer from the carrier in a hot state, and cutting said hydrous polymer in a hot state by a shearing stress.
    Type: Grant
    Filed: March 20, 1986
    Date of Patent: March 29, 1988
    Assignees: Mitsubishi Rayon Co., Ltd., Nitto Chemical Indutry Co., Ltd., Diafloc Co., Ltd.
    Inventors: Teruhiko Sugimori, Hideaki Habara, Ken-ichi Inukai, Akihisa Furuno
  • Patent number: 4717619
    Abstract: Disclosed herein is a process for the production of shaped polybenzimidazole articles which comprises forming a solvent solution of the polymer, depositing the solution on a support to form a film, removing sufficient solvent from the deposited film such that the film contains from about 10 to about 30 percent by weight of said solvent and compression molding the resulting product into a shaped article. Thus, this invention provides a unique process for the forming of molded shaped articles from polybenzimidazole based polymers.
    Type: Grant
    Filed: October 29, 1985
    Date of Patent: January 5, 1988
    Assignee: Hoechst Celanese Corporation
    Inventor: John S. Letinski
  • Patent number: 4711750
    Abstract: A continuous process for casting a molten metal oxide such as an aluminous oxide and more particularly an alumina-zirconia eutectic composition that is subsequently crushed to produce an abrasive is provided wherein two thin metal belts are brought into face-to-face relation and the molten oxide is poured into the nip between the belts as they come into face-to-face relation. The material that is being solidified maintains the belts slightly spaced apart on the order of some small fraction of an inch (e.g. 1/16) and the back surface of the belt is flooded with copious quantities of cooling fluid (e.g. water) to maintain the belts below red heat. The belts are held in closely spaced relation for a sufficient time to permit the abrasive to be cooled below red heat. The belts are then separated and the abrasive is discharged from between the belts.
    Type: Grant
    Filed: July 15, 1981
    Date of Patent: December 8, 1987
    Assignee: Norton Company
    Inventor: John J. Scott
  • Patent number: 4690788
    Abstract: A novel process for preparing particles of polymer gel prepared by polymerizing an aqueous solution of water-soluble vinyl monomers which comprises breaking the polymer gel into particles with a breaker device wherein the gel is cut into strips by a pair of rollers having a plurality of annular projections or grooves on their surfaces, the rollers rotating in an opposite direction to each other to engage each other and cut off the gel fed between the rollers, and the strips are then cut into particles by a combination of a fixed cutting blade and a rotating cutting blade. The obtained gel particles are further pulverized into fine round or particles spherical in a vertical type cutter comprising at least one vertically fixed cutting blade and a rotary cutting blade arranged rotatably and vertically, a clearance being provided between an edge of the rotary cutting blade and an edge of the fixed blade.
    Type: Grant
    Filed: November 5, 1985
    Date of Patent: September 1, 1987
    Assignee: Dai-Ichi Kogyo Seiyaku Co., Ltd.
    Inventors: Akira Yada, Shusaku Matsumoto, Yoshihiro Kawamori, Takao Saito, Tadashi Nishiyama, Yoshitugu Adachi
  • Patent number: 4654268
    Abstract: A method for processing intumescent material which forms a layer of a transparent fire-screening panel, which method includes forming a layer containing an aqueous solution of intumescent material on a cyclically moving support, removing water from the layer of material on the support by applying heat, removing the intumescent layer from the support within one cycle of its application thereto in such a manner that the layer becomes reworked or broken, and incorporating the removed intumescent material into a glazing panel.
    Type: Grant
    Filed: March 13, 1985
    Date of Patent: March 31, 1987
    Assignee: Glaverbel
    Inventors: Marcel De Boel, Michel Bosquee, Pierre Goelff
  • Patent number: 4537914
    Abstract: An absorbent floor cleaning and waxing composition is disclosed comprising shreds of a hydrophilic, open-celled, solids-loaded polyurethane foam having an aqueous wax emulsion releasably incorporated therein. The composition is effective to replace soiled coatings of floor wax with fresh floor wax.
    Type: Grant
    Filed: January 4, 1985
    Date of Patent: August 27, 1985
    Assignee: Creative Products Resource Associates, Ltd.
    Inventors: James A. Smith, Betty J. Murphy
  • Patent number: 4462526
    Abstract: A briquet sheet from a briquetting machine is subjected to shearing forces to sever the longitudinal webs of the sheet and subsequently, to bending forces to fracture the remaining transverse webs. The separator apparatus includes a pair of shear rolls with alternate shear lands and smaller diameter idler rolls. The shear rolls are followed by a pair of lobed separator rolls.
    Type: Grant
    Filed: June 14, 1982
    Date of Patent: July 31, 1984
    Assignee: Midrex Corporation
    Inventors: Kenneth R. Dumont, Jack R. Robinson
  • Patent number: 4405545
    Abstract: A method and apparatus is disclosed for rapidly solidifying and cooling molten metal oxides, by continuous casting, which according to the invention, comprises: feeding the molten metal oxides into the convergent space formed between two cylinders mounted for rotation about horizontal axes and rotated in opposite directions, i.e., counter-rotating, at a substantially equal peripheral speed, the distance between their axes being equal to the sum of the radius of each cylinder plus at least about one millimeter; cooling the walls of the cylinders to enable solidification of the molten material; controlling the rotary speed of the cylinders so that the molten metal oxide is not completely solidified until it reaches a point beyond a plane passing through the axes of rotation of the cylinders, and retrieving a solidified metal oxide product from the divergent space formed between the cylinders. The method is particularly suited to the production of fine grain abrasives of a corundum or courndum-zirconia base.
    Type: Grant
    Filed: January 26, 1982
    Date of Patent: September 20, 1983
    Assignee: Societe Francaise d'Electrometallurgie Sofrem
    Inventors: Louis Septier, Michel Demange
  • Patent number: 4389357
    Abstract: Method and apparatus for preparing a thermosetting resin for further processing. The resin is poured from a batch reactor onto a continuously moving conveyor belt to form a layer of about 2 to 4 inches thick. After the batch is received on the conveyor, the conveyor is stopped for several hours to permit the batch to cool and solidify. Thereafter, the conveyor is restarted and a chopper at the downstream end of the conveyor chops the solidified batch into small chunks and flakes. The conveyor has a rigid trough support under the upstream end of the conveyor's upper run and roller assemblies holding the conveyor in a trough configuration at its downstream end.
    Type: Grant
    Filed: June 26, 1981
    Date of Patent: June 21, 1983
    Assignee: Ashland Oil, Inc.
    Inventors: Richard S. Chu, Maher L. Mansour
  • Patent number: 4340342
    Abstract: The processing of thermoplastic materials by working the thermoplastic materials into a hot flat sheet. The sheet material is first deformed or scored into a series of parallel strands that are interconnected by thin ribbons of the thermoplastic material thereby retaining integrity of the sheet material. The sheet material is then severed along the score line of the thin ribbons to form parallel strands which are cooled and guided to a fly cutter which cubes the strand material.
    Type: Grant
    Filed: January 16, 1981
    Date of Patent: July 20, 1982
    Assignee: The B. F. Goodrich Company
    Inventor: Heung T. Kim
  • Patent number: 4175976
    Abstract: A non-dusting, relatively coarse particulate material is prepared from a relatively more finely divided material such as a pigment and an organic binder comprising a solid hexahydric alcohol with little or no affinity for water and a melting point within the range of to C. The finely divided material and binder are blended and cast with the aid of an aqueous carrier medium, and then heated to form a solid layer which can be broken up into flake-like particles or chunks. These flakes or chunks are not "agglomerated" or "pelletized" in the usual sense of these terms. The relative fine particles in the flakes are, apparently, bound up in a solid suspension comprising an adherent film or matrix.
    Type: Grant
    Filed: April 10, 1978
    Date of Patent: November 27, 1979
    Inventor: Fitzhugh L. Avera
  • Patent number: 4129489
    Abstract: A novel method of preparing polymer based powder coating compositions involves as a first step the preparation of a mixture containing one or more ethylenically unsaturated monomers which are polymerizable by ionizing radiation, and optionally other coating composition additives. Optional additives which may be incorporated in the mixture include pigments, internal or external crosslinkers, chain transfer agents, flow promoters, plasticizers, viscosity control agents, minor proportions of resins, and the like. Pigments are especially desirable additives. The next step in the process is to apply a coating of the mixture to a substrate. Then, the coated substrate is subjected to ionizing radiation to polymerize the ethylenically unsaturated monomers and thereby form a solid film. Finally, the film is broken into particles by any of several mechanical means to form a polymer based powder coating composition which when applied to a substrate and baked, fuses to produce a film.
    Type: Grant
    Filed: April 24, 1978
    Date of Patent: December 12, 1978
    Assignee: PPG Industries, Inc.
    Inventors: Roger M. Christenson, Rostyslaw Dowbenko, Joseph M. Makhlouf
  • Patent number: 4081502
    Abstract: A process for the production of a thermoplastic composition comprising a homogeneous blend of(i) 100 parts by weight of a saturated or unsaturated polyolefin elastomer having a green polymer tensile strength of at least 20 kp./cm.sup.2 at C. and a viscosity of 20-150 Mooney units (ML.sub.1+4 at C.) and(ii) 25-900 parts by weight of bitumen, which comprises:(a) admixing bitumen with said elastomer in a kneader at a temperature of about C. for about 1-100 minutes to form a viscous homogeneous composition;(b) cooling the resultant composition to minimize the adhesion to the inner wall and rotor of the kneader; and(c) ejecting at least 95% of the cooled composition from the kneader.
    Type: Grant
    Filed: October 17, 1975
    Date of Patent: March 28, 1978
    Assignee: Chemische Werke Huls Aktiengesellschaft
    Inventors: Harald Blumel, Paul Lipp
  • Patent number: 4076928
    Abstract: Water swellable absorbent articles, made from copolymers having a copolymerized crosslinker, together with methods for their preparation, and a composition containing a copolymerized crosslinker useful to make said articles are disclosed. The copolymers comprise 25-98% by weight of an alkali metal salt of an olefinically unsaturated monosulfonic or monocarboxylic acid, about 2-50% by weight of an olefinically unsaturated monocarboxylic acid and about 0.1-5.0% by weight of an N-substituted acrylamide or methacrylamide. The articles are crosslinked by heating and/or removing substantially all of the water from the precursor composition.The crosslinked compositions, in the form of a film, can be disintegrated to form flakes, strips or powders.The absorbent articles are useful as surgical sponges, diapers, tampons, meat trays, bath mats and the like.
    Type: Grant
    Filed: August 20, 1975
    Date of Patent: February 28, 1978
    Assignee: The Dow Chemical Company
    Inventor: James R. Gross
  • Patent number: 4056592
    Abstract: A process for the preparation of thermosetting resin powder paints comprising the steps of extruding a melt of a resinous composition for a thermosetting powder paint, continuously cooling the composition and forming it into a sheet, and pulverizing the formed sheet. Air blasting nozzles are directed at the sheet while it is on the cooling rolls. The adherence between the sheet and the rolls is improved, and the air blasting nozzles provide an auxiliary means for cooling the sheet.
    Type: Grant
    Filed: July 7, 1975
    Date of Patent: November 1, 1977
    Assignees: Dai Nippon Toryo Co., Ltd., The Japan Steel Works Ltd.
    Inventors: Ryoji Izumi, Shoji Kobayashi, Toshiharu Ono, Toru Shirato, Akiyoshi Fujii, Tadashi Okihara
  • Patent number: 3984603
    Abstract: A fiber-bundle-filled thermoplastic composite and method of preparing such composite are described wherein the fiber bundles are randomly oriented in the flat plane of the composite and the fiber bundle integrity is maintained, said composite leading to better properties and fiber dispersion in manufactured articles prepared from said composite.
    Type: Grant
    Filed: February 2, 1976
    Date of Patent: October 5, 1976
    Assignee: Standard Oil Company (Indiana)
    Inventors: James Zechinati, Elra W. Pegg
  • Patent number: 3981951
    Abstract: Button rods are made of different colored resins containing thixotropic agents and having catalyst and promoter agents added to separated portions of each resin so that when the resins are combined their gel time is accelerated. The combined resins are mixed both for mixing purposes and to lower the apparent viscosity, and the resins are fed through nozzles and into an inclined trough. The nozzles are reciprocated in arcs to lay the resins in a zig zag pattern in the trough, and the resins flow from the trough into an inclined casting tube where they quickly attain a relatively high apparent viscosity until they are removed from the tube before completely hard. The rods can then be sliced into button blanks or hardened and ground into beads.
    Type: Grant
    Filed: October 7, 1974
    Date of Patent: September 21, 1976
    Assignee: Rochester Button Company
    Inventor: Seymour I. Richman
  • Patent number: 3962397
    Abstract: A process for preparing a reflexible pigment consisting of a metal deposition layer and resinous coating layer on at least one side thereof and having a length and width of 0.1 to 500 .mu., a thickness of 0.1 to 4 .mu. and a true specific gravity of 1 to 2, which is characterized by providing on a base film a metal leaf consisting of a metal deposition layer and a resinous coating layer on at least one side thereof, peeling the metal leaf out of the base film by elongating the base film and crushing up the metal leaf. According to the process, a reflexible pigment in a dry state can be prepared with a remarkable simplicity and a high efficiency. The coating composition including the pigment prepared by the process has improved properties such as beautifulness, reflection property, application property, weather-proofing and abrasion resistance, and is useful for printing ink, writing ink or paint.
    Type: Grant
    Filed: November 6, 1974
    Date of Patent: June 8, 1976
    Assignee: Oike & Co., Ltd.
    Inventors: Hiroshi Narui, Ikuo Akune, Terumi Shinohara, Masao Numa, Yosiya Kobiki