Subsequent Treatment Or Product Thereof Patents (Class 106/423)
  • Patent number: 7011703
    Abstract: Inorganic pigments, having deposited on the pigment surface at least one alkenyl- or alkyl-substituted succinic anhydride and at least one organic polyol, possess improved processibility and dispersibility in thermoplastic materials, and impart improved properties to thermoplastic compositions containing said surface-treated pigments.
    Type: Grant
    Filed: June 24, 2005
    Date of Patent: March 14, 2006
    Assignee: Kerr-McGee Chemical LLC
    Inventor: Daniel H. Craig
  • Patent number: 6596061
    Abstract: Inorganic anti-corrosive pigments consist of surface-coated solids having a grain size of 0.1 to 75 &mgr;m. In order to improve the resistance of the paints and coatings containing such pigments, firstly Mn3(PO4)2 and secondly aluminium oxides and/or aluminium hydroxides are precipitated onto the solids.
    Type: Grant
    Filed: May 4, 2001
    Date of Patent: July 22, 2003
    Assignee: Metallgesellschaft Aktiengesellschaft
    Inventor: Thomas Rentschler
  • Patent number: 6051060
    Abstract: A method for making coated pigment particles by forming a suspension of the desired pigment particles in a medium that also comprises a polymer characterized by having hydrophobic moieties on the polymer backbone and ionic moieties that are present on, or can be formed on a polymer side chain or at the polymer terminals; allowing the suspension of pigment particles to contact said polymer at a temperature above the softening point of the polymer, allowing the resultant suspension to cool to a temperature below the solidification temperature for the polymer while maintaining the pigment particles in suspension, and, if required, forming the ionic moieties.
    Type: Grant
    Filed: December 4, 1997
    Date of Patent: April 18, 2000
    Assignee: Marconi Data Systems, Inc.
    Inventor: Yoshikazu Mizobuchi
  • Patent number: 5908498
    Abstract: A process for preparing a low-dusting, free-flowing pigment which has not been subjected to any micronizing treatment comprising the steps of providing an inorganic pigment material; providing a source of water; forming a fine, well dispersed slurry of the pigment and water; milling the slurry; depositing a treating agent having the formula ROOCCHSO.sub.3 MCH.sub.2 COOR' wherein R and R' are monovalent alkyl radicals having from about 2 to about 20 carbon atoms, and M is a metallic monovalent cation on the slurried milled pigment; and drying the pigment material having a treating agent deposited thereon. The invention also provides the free-flowing pigments produced by this process.
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: June 1, 1999
    Assignee: Kerr-McGee Chemical LLC
    Inventors: James W. Kauffman, Phillip M. Story, John E. Halko
  • Patent number: 5837049
    Abstract: A treated inorganic solid comprises particulate inorganic material the particles of which are coated with an alkylphosphonic acid or ester thereof, the alkylphosphonic acid containing 6 to 22 carbon atoms. The particulate material is usually a pigment, extender or filler which is treated by mixing with the alkylphosphonic acid or ester for example in an aqueous dispersion or during a process step such as milling. The treated inorganic solid is particularly useful for preparing polymer compositions such as masterbatches.
    Type: Grant
    Filed: October 23, 1997
    Date of Patent: November 17, 1998
    Assignee: Tioxide Group Services Limited
    Inventors: Colin Lloyd Watson, Peter James Allen
  • Patent number: 5472492
    Abstract: The invention relates to extended, organic pigments, their method of manufacture and their use in paint formulations, particularly those suitable for road or traffic markings. The subject pigments typically comprise a particulate lithopone core coated with a layer of an organic pigment. According to preferred embodiments, the pigment comprises an azo compound, the pigments are rosinated, and/or the core also contains a colorant or doping material, typically a metal oxide or metal salt. An exemplary method involves mixing particulate lithopone with a coupler such as acetoacet-o-anisidide. A coupler precipitator, typically an acidifier, is then added in an amount sufficient to precipitate the coupler onto the lithopone. The lithopone-bound coupler is then reacted with a diazonium ion in an azo-coupling reaction to form a pigment. The pigment-coated lithopone particles may then be heated and coated with a rosin or modified rosin soap.
    Type: Grant
    Filed: February 25, 1994
    Date of Patent: December 5, 1995
    Assignees: Sino-American Pigment Systems, Inc., Inc., Guangzhou Hauli Pigment Chemical Industrial Co.
    Inventors: Michael T. Issel, Derek W. Bannister, Shao H. Long, Quilin Wang, Xiang L. Zhong, Guiping Xiao
  • Patent number: 5336311
    Abstract: This invention relates to structural aggregate pigment products that are cationic, and have improved wet-end retention. A method for converting anionic pigments to cationic pigments is also provided. More particularly, a structural aggregate pigment comprising a clay and/or titanium dioxide or other particulate components, and a functional microgel made from silicon and aluminum or zinc gel formers and a gelling agent such as calcium chloride, can be cationized by adding an effective amount of modified or unmodified epichlorhydrin dimethylamine condensate to a slurry of the structured pigment. The resulting cationic pigments have superior papermaking characteristics and a much improved retention.
    Type: Grant
    Filed: July 7, 1992
    Date of Patent: August 9, 1994
    Assignee: Nord Kaolin Company
    Inventors: Jerry L. Curtis, Kenneth A. Johnson, Lester W. House
  • Patent number: 5127950
    Abstract: Process for the production of a short-prismatic aluminum hydroxide by decomposing a supersaturated sodium aluminate liquor. The product can be used as a pigment and filler in the paper industry, as a flame-retardant filler in plastics and as a white pigment in paints and enamels.
    Type: Grant
    Filed: September 11, 1990
    Date of Patent: July 7, 1992
    Assignee: Lonza Ltd.
    Inventors: Hans Bongartz, Georg Kirschbaum, Klaus Kramer
  • Patent number: 5116418
    Abstract: Process for manufacturing of structural aggregate pigment products with intrinsically built-in functional properties, from aqueous dispersions of particulate matter treated with in-situ formed complex functional microgels with rapid formation kinetics.
    Type: Grant
    Filed: October 12, 1989
    Date of Patent: May 26, 1992
    Assignee: Industrial Progress Incorporated
    Inventor: Adam F. Kaliski