Patents Assigned to Hooker Chemicals & Plastics Corporation
  • Method for production of sulfhydryl compounds
    Patent number: 4052281
    Abstract: An improved process is disclosed for production of sulfhydryl-terminated compounds by reaction of an allene and hydrogen sulfide initiated with ultraviolet light of wavelength above about 2600 Angstroms to obtain a colorless product of improved purity. The invention also includes the polymerization of an unsaturated hydrocarbon with the sulfhydryl-terminated product to prepare a sulfhydryl-terminated polythioether. These compounds are useful as chemical intermediates and precursors of elastomeric sealants, such as architectural sealants.
    Type: Grant
    Filed: October 4, 1976
    Date of Patent: October 4, 1977
    Assignee: Hooker Chemicals & Plastics Corporation
    Inventors: Bobby F. Dannels, Emil J. Geering
  • Sensitized production of sulfhydryl compounds using ultraviolet radiation
    Patent number: 4052283
    Abstract: An improved process for production of sulfhydryl-terminated compounds by reaction of an allene compound and hydrogen sulfide is disclosed wherein the reaction is carried out in the presence of ultraviolet light of wavelength substantially above 2600 Angstroms and of an organic photosensitizing reagent to obtain a substantially colorless product of improved purity at an increased reaction rate. The invention also includes polymerization of the crude sulfhydryl-terminated product with an unsaturated compound to prepare sulfhydryl-terminated polythioethers which are useful as chemical intermediates and precursors of elastomeric sealants, such as architectural sealants.
    Type: Grant
    Filed: October 4, 1976
    Date of Patent: October 4, 1977
    Assignee: Hooker Chemicals & Plastics Corporation
    Inventor: Bobby F. Dannels
  • High molecular weight copolyester resins having a high degree of alternating structure
    Patent number: 4051106
    Abstract: High molecular weight, linear aromatic polyesters having a very high degree of alternating microstructure are produced by reacting a hydroxyl-containing component with an excess of acid halide, recovering the bis adduct thus formed and thereafter polymerizing the bis adduct with additional hydroxy-containing components.
    Type: Grant
    Filed: January 20, 1975
    Date of Patent: September 27, 1977
    Assignee: Hooker Chemicals & Plastics Corporation
    Inventors: Edward V. Gouinlock, Jr., Jerold C. Rosenfeld
  • Cyclic ethers of phenolic compounds and polymers thereof
    Patent number: 4051189
    Abstract: This invention relates to novel aromatic compounds and to novel aromatic polymers of the compounds. The compounds of the present invention are cyclic ethers of orthobisphenol having the following structure: ##STR1## wherein R is independently selected from the group of hydrogen, chlorine, bromine or fluorine. The compounds of the present invention may be easily polymerized and the polymers exhibit good stability at high temperatures. The polymers are useful as molding compounds in applications where phenol-aldehyde and phenol-ketone condensates are now used.
    Type: Grant
    Filed: August 4, 1976
    Date of Patent: September 27, 1977
    Assignee: Hooker Chemicals & Plastics Corporation
    Inventors: Alvin F. Shepard, Bobby F. Dannels
  • Microstructured high molecular weight-low viscosity polyester polymers
    Patent number: 4051107
    Abstract: High molecular weight, linear aromatic polyesters having an ordered microstructure are produced in an improved solution polycondensation process in which the hydroxyl component is added to the acid halide.
    Type: Grant
    Filed: January 20, 1975
    Date of Patent: September 27, 1977
    Assignee: Hooker Chemicals & Plastics Corporation
    Inventors: Joseph A. Pawlak, Anthony L. Lemper, Victor A. Pattison
  • Polyhaloindene compounds
    Patent number: 4049727
    Abstract: New compounds and a process for the preparation thereof are disclosed of the formula: ##STR1## WHEREIN EACH R is independently halogen or lower alkyl and n is from 2 to 4. These compounds are useful as chemical intermediates and fire retardant additives.
    Type: Grant
    Filed: September 10, 1975
    Date of Patent: September 20, 1977
    Assignee: Hooker Chemicals & Plastics Corporation
    Inventor: Samuel Gelfand
  • Production of chlorine dioxide with product slurry metathesis
    Patent number: 4049784
    Abstract: An improved process for the production of chlorine dioxide wherein an alkali metal chlorate and a mineral acid are reacted in a single vessel, and the resultant alkali metal salt is converted to a more desirable salt in a metathesis column by reaction with an appropriate acid or an alkaline earth or alkali metal, chloride.
    Type: Grant
    Filed: May 24, 1976
    Date of Patent: September 20, 1977
    Assignee: Hooker Chemicals & Plastics Corporation
    Inventor: Willard A. Fuller
  • Production of chlorine dioxide with product slurry metathesis
    Patent number: 4049785
    Abstract: An improved process for the production of chlorine dioxide wherein an alkali metal chlorate and a mineral acid are reacted in a single vessel, and the resultant alkali metal salt is converted to a more desirable salt in a metathesis column by reaction with an appropriate acid or an alkaline earth or alkali metal, chloride.
    Type: Grant
    Filed: May 24, 1976
    Date of Patent: September 20, 1977
    Assignee: Hooker Chemicals & Plastics Corporation
    Inventor: Willard A. Fuller
  • Pigmentable low-profile polyester molding compositions
    Patent number: 4049749
    Abstract: Polymerizable molding compositions having excellent pigmentability and dimensional stability comprise:A. polymerizable polyester component andB. an additive component comprising discrete particles of less than about 50 microns diameter of a cross-linked acrylate polymer having a glass transition temperature of below about 75.degree. Celsius and which is chemically inert with respect to the polyester component and is swellable but insoluble therein. The additive component comprises the lightly cross-linked reaction product of at least one monofunctional acrylate monomer and at least one polyfunctional acrylate monomer.
    Type: Grant
    Filed: December 2, 1975
    Date of Patent: September 20, 1977
    Assignee: Hooker Chemicals & Plastics Corporation
    Inventor: Donald H. Thorpe
  • Solution polycondensation method
    Patent number: 4049629
    Abstract: High molecular weight, linear aromatic polyesters are produced in an improved solution polycondensation process in which the hydroxyl component is added to the acid halide.
    Type: Grant
    Filed: January 20, 1975
    Date of Patent: September 20, 1977
    Assignee: Hooker Chemicals & Plastics Corporation
    Inventors: Joseph A. Pawlak, Anthony L. Lemper, Victor A. Pattison
  • Lengthening anode life in electrolytic cell having molded body
    Patent number: 4048045
    Abstract: A molded electrolytic cell body or frame for housing electrodes and a membrane has a passageway therein communicating an anolyte drain header or manifold or an anolyte discharge header with the anolyte compartment of the cell, through which passageway a conductor of material resistant to electrolytic attack is passed to connect the liquid in the anolyte drain or discharge header with the anode. The conductor acts as a target anode and inhibits electrolytic damage to the anode, thereby lengthening its life.
    Type: Grant
    Filed: October 20, 1975
    Date of Patent: September 13, 1977
    Assignee: Hooker Chemicals & Plastics Corporation
    Inventors: Jeffrey D. Eng, Edward H. Cook, Jr., Wilfredo E. Figueras
  • Apparatus for electroplating plastic insulating cable sheaths
    Patent number: 4048042
    Abstract: An apparatus is provided for electroplating wire cable having a plastic sheath which has been made conductive. The apparatus comprises a T-tube containing one or more anodes having a geometric configuration which creates an electric field substantially symmetric about any point on the axis of the T-tube along which the cable passes during the plating operation. Means are provided for cathode contact, for advancing the cable through the apparatus, and for maintaining a proper level of plating solution.
    Type: Grant
    Filed: January 5, 1976
    Date of Patent: September 13, 1977
    Assignee: Hooker Chemicals & Plastics Corporation
    Inventor: Edward J. Quinn
  • Production of chlorine dioxide
    Patent number: 4045542
    Abstract: There is provided an improved process for the production of chlorine dioxide wherein an alkali metal chlorate, and hydrochloric acid are reacted in a vessel, and the salt crystals are separated from the generator crystal slurry.
    Type: Grant
    Filed: August 6, 1976
    Date of Patent: August 30, 1977
    Assignee: Hooker Chemicals & Plastics Corporation
    Inventor: Willard A. Fuller
  • Low profile polyester molding composition
    Patent number: 4043988
    Abstract: Dimensionally stable, pigmentable polyester molding compositions comprise:A. polymerizable polyester component; andB. an additive component comprising discrete particles of less than about 50 microns diameter of a lightly cross-linked vinyl chloride polymer having a glass transition temperature of below about 100.degree. C and which is chemically inert with respect to the polyester component and is swellable but insoluble therein.The additive component is a vinyl chloride polymer or copolymer lightly cross-linked with a suitable polyfunctional monomer, such as a diacrylate.
    Type: Grant
    Filed: January 2, 1976
    Date of Patent: August 23, 1977
    Assignee: Hooker Chemicals & Plastics Corporation
    Inventors: Victor F. G. Cooke, Donald H. Thorpe
  • Polymeric fluoromethylated dienes
    Patent number: 4041229
    Abstract: Polymers and copolymers of ##STR1## are disclosed, wherein X and X.sup.1 are halogen.
    Type: Grant
    Filed: November 8, 1976
    Date of Patent: August 9, 1977
    Assignee: Hooker Chemicals & Plastics Corporation
    Inventor: Victor A. Pattison
  • High impact corrosion resistant polymers
    Patent number: 4041104
    Abstract: Impact resistant, corrosion resistant polymers are prepared from a polymerizble composition comprising (1) a vinyl monomer and (2) a prepolymer blend obtained by reacting a molar excess of organic diisocyanate with an hydroxyl terminated polydiene and subsequently reacting the product thereof with an hydroxyalkyl acrylate.
    Type: Grant
    Filed: August 29, 1975
    Date of Patent: August 9, 1977
    Assignee: Hooker Chemicals & Plastics Corporation
    Inventor: Jeffrey E. Selley
  • Voltage reduction of membrane cell for the electrolysis of brine
    Patent number: 4040919
    Abstract: The voltage drop in a three compartment membrane cell used for the electrolysis of brine is diminished by treatment of the anolyte with acid, preferably hydrochloric acid, lowering the caustic concentration in the buffer zone and decreasing the current density for a period of time, during which the membrane adjacent to the anolyte is rejuvenated, and then resuming normal operations. In a similar manner the voltage drop in a two compartment membrane cell may be reduced, with the lowering of the caustic concentration being effected in the catholyte, preferably by dilution with water.
    Type: Grant
    Filed: February 11, 1976
    Date of Patent: August 9, 1977
    Assignee: Hooker Chemicals & Plastics Corporation
    Inventor: Jeffrey D. Eng
  • Halate cell top
    Patent number: 4039420
    Abstract: An improved electolytic cell top for the manufacture of alkali metal halates is disclosed, wherein the cell top has a substantially improved useful life. A titanium liner forms the interior surface of the cell top, and material cost can be minimized by choosing a titanium thickness sufficient to withstand forces created by hydrostatic pressures of electrolyte and by the weight of the cell, when supported by the enclosing structure of the present invention.
    Type: Grant
    Filed: March 24, 1976
    Date of Patent: August 2, 1977
    Assignee: Hooker Chemicals & Plastics Corporation
    Inventor: Chester Ronald Nawrot
  • Low profile additives in polyester systems
    Patent number: 4038342
    Abstract: Polymerizable polyester compositions are provided containing a styrene-maleic anhydride copolymer reacted with a hydroxyl terminated saturated polyester. Such compositions have good thickening response and are free from tackiness in the uncured state, and upon curing have good shrinkage control and improved surface smoothness. The compositions are useful as bulk molding compounds or sheet molding compounds.
    Type: Grant
    Filed: March 11, 1976
    Date of Patent: July 26, 1977
    Assignee: Hooker Chemicals & Plastics Corporation
    Inventor: Willis T. Schwartz, Jr.
  • Low profile additives in polyester systems
    Patent number: 4038341
    Abstract: Polymerizable polyester molding compositions having good shrinkage control comprise (1) a polymerizable polyester, and (2) a low profile additive comprising the reaction product of a styrene-maleic anhydride copolymer and a polydiene having terminal hydroxyl groups.
    Type: Grant
    Filed: March 11, 1976
    Date of Patent: July 26, 1977
    Assignee: Hooker Chemicals & Plastics Corporation
    Inventor: Willis T. Schwartz, Jr.