Patents Represented by Attorney L. A. Chaletsky
  • Patent number: 5168106
    Abstract: Carbon blacks having a nitrogen surface area (N.sub.2 SA) of from at least 180 m.sup.2 /g to about 250 m.sup.2 /g, a ratio of nitrogen surface area/iodine adsorption number (N.sub.2 SA/I.sub.2 No.) of from about 0.90 to about 1.05, a ratio of .DELTA.D 50/Dmode of from about 0.67 to about 0.81, a DBP (dibutyl phthalate number) of from about 115 cc/100 g to about 135 cc/100 g and a .DELTA.DBP [.DELTA.DBP=DBP-CDPB (Crushed DBP)] less than or equal to 20 cc/100 g, and rubber compositions in which the carbon blacks are incorporated.
    Type: Grant
    Filed: September 14, 1989
    Date of Patent: December 1, 1992
    Assignee: Cabot Corporation
    Inventors: Kenneth W. Babcock, Jay J. Zimmer
  • Patent number: 5137962
    Abstract: Superior treadwear/hysteresis carbon blacks having a CTAB of about 90-98 m.sup.2 /g, a N.sub.2 SA of about 92-102 m.sup.2 /g, an I.sub.2 No. of 90-98 m.sup.2 /g, a DBP of about 126-136 cc/100 g, a CDBP of about 102-110 cc/100 g, and a Tint of about 104-112. Also disclosed are rubber compositions containing the carbon blacks which exhibit superior treadwear/hysteresis performance properties.
    Type: Grant
    Filed: February 6, 1990
    Date of Patent: August 11, 1992
    Assignee: Cabot Corporation
    Inventor: Martin C. Green
  • Patent number: 5110576
    Abstract: Carbon blacks having an I.sub.2 number of 135-200 and a DBP of 105-150 which, when incorporated into rubber compositions, impart increased abrasion resistance and lower hysteresis. Also disclosed are rubber compositions incorporating the novel carbon blacks.
    Type: Grant
    Filed: May 22, 1990
    Date of Patent: May 5, 1992
    Assignee: Cabot Corporation
    Inventors: Mizuo Soeda, Kazuyoshi Watanabe
  • Patent number: 5093407
    Abstract: Carbon blacks having a N.sub.2 SA of from at least about 150 m.sup.2 /g to about 180 m.sup.2 /g, a DBP of about 125 cc/100 g or less, a Dmode of 70 nm or less, a N.sub.2 SA/I.sub.2 No. ratio of 0.85 to 0.98 and a .DELTA.DBP less than 210 cc/100 g which, when incorporated into rubber compositions, impart increased abrasion resistance, heterogenous abrasion resistance and grip performance properties. Also disclosed are rubber composition incorporating the novel carbon blacks.
    Type: Grant
    Filed: September 10, 1990
    Date of Patent: March 3, 1992
    Assignee: Cabot Corporation
    Inventors: Yasumi Komai, Mizuo Soeda
  • Patent number: 4863883
    Abstract: The present invention relates to a variety of dispersible doped multi-component BaTiO.sub.3 based powder compositions. The primary particles of each of the products are substantially spherical, have sizes in the range of 0.05 to 0.4 microns and have narrow size distributions. Further, the compositions of the primary particles, forming each powder, are comparable. The amount of dopant oxide or oxides contained in the powder composition ranges from between greater than 1 to 10 mole percent. Regardless of the dopant or dopants utilzied, all the powder compositions of the present invention are identified by the same unique morphological characteristics.
    Type: Grant
    Filed: August 23, 1988
    Date of Patent: September 5, 1989
    Assignee: Cabot Corporation
    Inventors: Jameel Menashi, Robert C. Reid, Laurence P. Wagner
  • Patent number: 4374113
    Abstract: This disclosure relates to an improved furnace process for producing carbon blacks by the incomplete combustion of hydrocarbonaceous feedstock wherein the resultant blacks have higher surface areas than the carbon blacks normally prepared from the feedstocks, as a result of which the blacks are particularly suitable for use in imparting conductivity properties to plastic materials and the like. This disclosure also relates to the production of a novel class of furnace blacks having excellent conductivity properties and which are characterized by high surface areas and low pH values.
    Type: Grant
    Filed: April 30, 1981
    Date of Patent: February 15, 1983
    Assignee: Cabot Corporation
    Inventors: Barrie J. Yates, Ronald C. Hurst