Patents Assigned to Dart Industries
  • Vinyl halide stabilizer compositions
    Patent number: 4269744
    Abstract: A vinyl halide resin stabilizer composition which essentially contains:(a) a calcium, zinc or mixed calcium/zinc salt of a higher fatty acid;(b) a polyhydroxy alcohol component wherein at least 50% of this component is either di-or tri-pentaerythritol; and(c) a magnesium compound, particularly magnesium hydroxide or magnesium acetateThese compositions synergistically contribute to the heat stability of vinyl halide resin compositions and offer significant heat stabilization economies. Early color as well as long term heat stability performances of the metal salt compounds are improved in the compositions disclosed thereby permitting the reduction in amounts of such compounds needed for stabilization.
    Type: Grant
    Filed: June 4, 1979
    Date of Patent: May 26, 1981
    Assignee: Dart Industries Inc.
    Inventors: Ramchandra K. Hulyalkar, Gerald A. Baum
  • Peroxygen compound-metal carboxylate redox catalyst system for vinyl chloride polymerization
    Patent number: 4269956
    Abstract: A process for the bulk or suspension polymerization of vinyl chloride, in the presence of a redox catalyst system consisting of a peroxyester or diacyl peroxide, a stannous or antimony (III) carboxylate and a complexing agent.
    Type: Grant
    Filed: December 21, 1979
    Date of Patent: May 26, 1981
    Assignee: Dart Industries Inc.
    Inventors: Norman G. Gaylord, Meshulam Nagler
  • Low toxicity vinyl halide stabilizer compositions
    Patent number: 4269743
    Abstract: A vinyl halide resin stabilizer composition which essentially contains:(a) a calcium, zinc or mixed calcium/zinc salt of a higher fatty acid; and(b) a polyhydroxy alcohol component wherein at least 50% of this component is either di-or tri-pentaerythritol.These compositions synergistically contribute to the heat stability of vinyl halide resin compositions and offer significant heat stabilization economies. Early color as well as long term heat stability performances of the metal salt compounds are improved in the compositions disclosed thereby permitting the reduction in amounts of such compounds needed for stabilization.
    Type: Grant
    Filed: June 4, 1979
    Date of Patent: May 26, 1981
    Assignee: Dart Industries Inc.
    Inventors: Ramchandra K. Hulyalkar, Gerald A. Baum
  • Peroxygen compound-stannous chloride redox catalyst system for suspension polymerization of vinyl chloride
    Patent number: 4269958
    Abstract: A process for the suspension polymerization of vinyl chloride, in the presence of a redox catalyst system consisting of a peroxyester or diacyl peroxide and stannous chloride.
    Type: Grant
    Filed: December 21, 1979
    Date of Patent: May 26, 1981
    Assignee: Dart Industries Inc.
    Inventor: N. Grant Gaylord
  • Peroxygen compound-metal carboxylate redox catalyst system for vinyl monomer polymerization
    Patent number: 4269957
    Abstract: A process for the bulk or suspension polymerization of vinyl monomers, particularly vinyl chloride, in the presence of a redox catalyst system consisting of a peroxyester or diacyl peroxide and a stannous or antimony (III) carboxylate.
    Type: Grant
    Filed: December 21, 1979
    Date of Patent: May 26, 1981
    Assignee: Dart Industries Inc.
    Inventors: Norman G. Gaylord, Meshulam Nagler, Marvin M. Fein
  • Luggage marker
    Patent number: 4266354
    Abstract: A luggage marker including a strap for providing a strap loop including means for locking the strap in place as it is pulled tight during placement of the luggage marker about the handle of a piece of luggage. The luggage marker preferably includes an integrally molded hinged window for securing and protecting an identification tag within a tag receiving base portion integral with the strap.
    Type: Grant
    Filed: August 16, 1979
    Date of Patent: May 12, 1981
    Assignee: Dart Industries Inc.
    Inventor: Robert H. C. M. Daenen
  • Peroxyester-monosaccharide redox catalyst system for vinyl chloride polymerization
    Patent number: 4261870
    Abstract: A process for the bulk or suspension polymerization of vinyl chloride in the presence of a redox catalyst system consisting of a peroxyester and a monosaccharide or a carboxylic acid ester of a monosaccharide.
    Type: Grant
    Filed: December 21, 1979
    Date of Patent: April 14, 1981
    Assignee: Dart Industries Inc.
    Inventor: Norman G. Gaylord
  • Ozone control catalyst compositions
    Patent number: 4261863
    Abstract: A highly efficient novel catalyst composition for ozone removal is made from(a) metallic silver deposited on a relatively high surface area metal substrate and(b) a composite of a relatively high surface area zirconia and oxides of manganese.
    Type: Grant
    Filed: November 5, 1979
    Date of Patent: April 14, 1981
    Assignee: Dart Industries Inc.
    Inventors: Ronald A. Kent, Marvin M. Fein
  • Detachable handle assembly
    Patent number: 4241946
    Abstract: A handle assembly is provided which can be releasably attached to a utensil side handle. The assembly includes a handle member having a connector end and an opposing outer end. The member includes an open channel extending along at least a major portion of its longitudinal axis. Within the channel is provided an elongated insert which is pivotally connected adjacent the handle member connector end. A lever means having a connector portion and a cammed engagement portion is secured to the insert. The connector portion is adapted to engage the utensil side handle, whereas the cammed engagement portion is adapted to releasably engage a rocker-arm assembly located proximate the handle member opposing outer end.The rocker-arm assembly being located adjacent the outer end of the handle member can be readily manipulated to connect with the cammed engagement portion of the lever.
    Type: Grant
    Filed: November 16, 1978
    Date of Patent: December 30, 1980
    Assignee: Dart Industries Inc.
    Inventor: Carl R. Spoeth, Jr.
  • Peroxygen compound-metal mercaptide redox catalyst system for vinyl halide polymerization
    Patent number: 4242482
    Abstract: A process for the bulk or suspension polymerization of vinyl chloride or vinylidene chloride, in the presence of a redox catalyst system consisting of a peroxyester or a diacyl peroxide and a stannous or antimony (III) mercaptide.
    Type: Grant
    Filed: December 21, 1979
    Date of Patent: December 30, 1980
    Assignee: Dart Industries Inc.
    Inventors: Norman G. Gaylord, Meshulam Nagler, Marvin M. Fein
  • Closured container or the like
    Patent number: D257930
    Type: Grant
    Filed: August 16, 1979
    Date of Patent: January 20, 1981
    Assignee: Dart Industries Inc.
    Inventor: Rino Conti
  • Container or the like
    Patent number: D257931
    Type: Grant
    Filed: August 16, 1979
    Date of Patent: January 20, 1981
    Assignee: Dart Industries Inc.
    Inventor: Rino Conti
  • Container closure or the like
    Patent number: D257933
    Type: Grant
    Filed: August 16, 1979
    Date of Patent: January 20, 1981
    Assignee: Dart Industries Inc.
    Inventor: Rino Conti
  • Cover for a food container
    Patent number: D257939
    Type: Grant
    Filed: February 12, 1979
    Date of Patent: January 20, 1981
    Assignee: Dart Industries Inc.
    Inventor: Rino Conti
  • Sugar bowl or the like
    Patent number: D258037
    Type: Grant
    Filed: May 16, 1979
    Date of Patent: January 27, 1981
    Assignee: Dart Industries Inc.
    Inventor: Rino Conti
  • Card rack or the like
    Patent number: D258511
    Type: Grant
    Filed: April 16, 1979
    Date of Patent: March 10, 1981
    Assignee: Dart Industries Inc.
    Inventor: Harold P. Ashton
  • Mixing bowl or the like
    Patent number: D259011
    Type: Grant
    Filed: March 16, 1978
    Date of Patent: April 28, 1981
    Assignee: Dart Industries Inc.
    Inventor: Robert H. C. M. Daenen
  • Shelf bracket or the like
    Patent number: D259080
    Type: Grant
    Filed: August 11, 1978
    Date of Patent: May 5, 1981
    Assignee: Dart Industries Inc.
    Inventor: Rino Conti
  • Luggage marker or the like
    Patent number: D259128
    Type: Grant
    Filed: August 16, 1979
    Date of Patent: May 5, 1981
    Assignee: Dart Industries Inc.
    Inventor: Robert H. C. M. Daenen
  • Lunch box
    Patent number: D259167
    Type: Grant
    Filed: April 23, 1979
    Date of Patent: May 12, 1981
    Assignee: Dart Industries Inc.
    Inventor: Robert H. C. M. Daenen