Patents Represented by Attorney F. A. Iskander

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  • Method of preparing molybdenum derivative compound catalysts for epoxidation reactions
    Patent number: 3991090
    Abstract: A method of preparing molybdenum derivative compound catalysts for epoxidation reactions is described wherein an oxygen-containing molybdenum compound is reacted with an organic compound having vicinal hydroxyl groups in the presence of a hydrohalic acid selected from hydrofluoric acid, hydrochloric acid, hydrobromic acid and hydroiodic acid.
    Type: Grant
    Filed: July 11, 1975
    Date of Patent: November 9, 1976
    Assignee: Olin Corporation
    Inventors: Richard A. Hagstrom, John A. Herbst, Robert J. Fairbrother
  • Method for decolorizing phosphate polyesters
    Patent number: 3989773
    Abstract: Selected bleaching agents are used to decolorize off-color phosphate polyesters.
    Type: Grant
    Filed: July 24, 1975
    Date of Patent: November 2, 1976
    Assignee: Olin Corporation
    Inventors: Richard J. Turley, Alexandre Ozolins, Robert B. Lauder
  • Process for preparing bis(2-haloalkyl) phosphoro-halidates
    Patent number: 3987129
    Abstract: An improved process is disclosed for the preparation of bis(2-haloalkyl) phosphorohalidates. This process comprises the steps of reacting phosphorus trihalide with a stoichiometric excess of alkylene oxide to form tris(2-haloalkyl) phosphite, substantially eliminating the presence of unreacted alkylene oxide in the tris(2-haloalkyl) phosphite, and finally converting it to bis(2-haloalkyl) phosphorohalidate by reaction with halogen.
    Type: Grant
    Filed: February 26, 1975
    Date of Patent: October 19, 1976
    Assignee: Olin Corporation
    Inventors: Philip M. Pivawer, Adrian D'Souza, Joseph J. Levitzky
  • Catalytically stable halogenated polyol composition
    Patent number: 3980579
    Abstract: A catalytically stabilized polyol composition, for use in the preparation of polyurethane foam, is disclosed which comprises a halogen-containing polyol, an amine catalyst and a sulfur-containing organotin compound.
    Type: Grant
    Filed: October 18, 1974
    Date of Patent: September 14, 1976
    Assignee: Olin Corporation
    Inventors: Allan H. Syrop, Peter P. Priga
  • Process for the preparation of 3-trichloromethyl-5-chloro-1,2,4-thiadiazole
    Patent number: 3979403
    Abstract: A process is provided for preparing 3-trichloromethyl-5-chloro-1,2,4-thiadiazole in improved yields by reacting a defined molar excess trichloroacetamidine with trichloromethanesulfenyl chloride while controlling pH of the reaction mixture. The present process may advantageously be employed in a batch or continuous process.
    Type: Grant
    Filed: March 31, 1975
    Date of Patent: September 7, 1976
    Assignee: Olin Corporation
    Inventors: Philip M. Pivawer, Douglas A. Farmer, Jr.
  • Silicate-based surfactant composition
    Patent number: 3976675
    Abstract: A novel silicate-based surfactant composition is prepared by a selective process involving (1) reaction of silicon tetrahalide with water and alcohol followed by (2) transesterification with a polyether alcohol. The resulting surfactant composition is utilized as a stabilizer in the production of polyurethane foam.
    Type: Grant
    Filed: November 19, 1974
    Date of Patent: August 24, 1976
    Assignee: Olin Corporation
    Inventors: Robert N. Scott, Henry F. Lederle, Frank J. Milnes, Maurice A. Raymond
  • Continuous preparation of 2,4,4,4-tetrachlorobutanol
    Patent number: 3969423
    Abstract: A continuous process for preparing 2,4,4,4-tetrachlorobutanol by reacting allyl alcohol with carbon tetrachloride in the presence of a catalyst system comprised of carbon dioxide and an iron-containing material.
    Type: Grant
    Filed: June 25, 1975
    Date of Patent: July 13, 1976
    Assignee: Olin Corporation
    Inventor: Neal E. Morganson
  • Halogenated acetals
    Patent number: 3968170
    Abstract: A new group of halogenated acetals is disclosed. These acetals, which are derived from the reaction of 2,4,4,4-tetrachlorobutanol with an aldehyde, are useful as additives for reducing the burning rate of polyurethane foam.
    Type: Grant
    Filed: September 22, 1975
    Date of Patent: July 6, 1976
    Assignee: Olin Corporation
    Inventors: John S. Babiec, Jr., Richard J. Turley
  • Polyurethane foam generating apparatus
    Patent number: 3962120
    Abstract: An improved apparatus is disclosed for the on-site generation of polyurethane foam. The apparatus comprises a timing device, which is readily accessible to the foaming operator, for accurately controlling the size of each foam shot.
    Type: Grant
    Filed: April 28, 1975
    Date of Patent: June 8, 1976
    Assignee: Olin Corporation
    Inventors: Louis R. Chiocchio, Robert S. Zirlis
  • Bis (diisocyanatobenzyl) -chlorobenzene
    Patent number: 3952043
    Abstract: Selected tetrafunctional methylene-bridged aromatic isocyanates and a method for their preparation are disclosed. The utility of these isocyanates as cross-linking agents for polyurethanes is also disclosed.
    Type: Grant
    Filed: January 10, 1975
    Date of Patent: April 20, 1976
    Assignee: Olin Corporation
    Inventors: Wilhelm J. Schnabel, Ralph A. Colafati, III
  • High resilience polyurethane foam stabilized with a silicate-based surfactant composition
    Patent number: 3935133
    Abstract: High resilience polyether polyurethane foam is prepared from a reaction mixture comprising a silicate-based surfactant composition.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: January 27, 1976
    Assignee: Olin Corporation
    Inventors: Bruce G. VAN Leuwen, Ralph A. Colafati, III
  • Hydrogenation of dinitrotoluene to toluene diamine
    Patent number: 3935264
    Abstract: An improved process is disclosed for the hydrogenation of dinitrotoluene to toluene diamine in the presence of an aliphatic alcohol solvent. Aimed at preventing the formation of N-alkyl toluene diamine by-product, the improvement resides in carrying out the hydrogenation reaction in the presence of a small proportion of carbon monoxide.
    Type: Grant
    Filed: June 19, 1974
    Date of Patent: January 27, 1976
    Assignee: Olin Corporation
    Inventor: Sudhir K. Bhutani
  • Preparation of low friability rigid polyurethane foam
    Patent number: 3933698
    Abstract: An improvement is disclosed in the preparation of rigid polyurethane foams which have relatively high surface friability. The improvement resides in the use of a select group of amine-based polyols to reduce the friability of the resulting foam.
    Type: Grant
    Filed: September 23, 1974
    Date of Patent: January 20, 1976
    Assignee: Olin Corporation
    Inventors: Stephen Fuzesi, Allan H. Syrop
  • High resilience polyurethane foam
    Patent number: 3931066
    Abstract: Selected polyether polyols are used as stabilizers in the production of high resilience polyurethane foam.
    Type: Grant
    Filed: August 8, 1974
    Date of Patent: January 6, 1976
    Assignee: Olin Corporation
    Inventors: John E. Puig, Bruce G. VAN Leuwen