Patents by Inventor Carl R. Parks

Carl R. Parks has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5187239
    Abstract: A method is disclosed for increasing the rate of vulcanization of a rubber composition comprising adding to a sulfur vulcanizable rubber a methyl trialkyl ammonium salt of the formula: ##STR1## wherein R.sup.1, R.sup.2, and R.sup.3 are independently alkyl radicals having 8 to 10 carbon atoms and M is selected from the group consisting of Cl, Br, CH.sub.3 SO.sub.4 and HSO.sub.4. Addition of a methyl trialkyl ammonium salt of the above formula significantly increases the rate of vulcanization of the rubber.
    Type: Grant
    Filed: March 22, 1990
    Date of Patent: February 16, 1993
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Carl R. Parks, Richard M. D'Sidocky, Martin P. Cohen
  • Patent number: 4877845
    Abstract: There is disclosed compounds of the structural formula: ##STR1## wherein X is a radical of the structural formula:--CH.sub.2 --CH.sub.2 --NH--CH.sub.2 --CH.sub.2 --yand y is 0,1,2 or 3; which when combined with a nonhalogenated vulcanizable diene containing elastomer such as polybutadiene, polyisoprene, styrene/butadiene copolymers, terpolymers of acrylonitrile butadiene and styrene and blends thereof accelerate the rate of vulcanization without detrimentally impacting the processing safety of the rubber. These compounds either in free form structural formula (I) or as preformed complexes with zinc structural formula (II) in the plus 2 valence state offer significantly enhanced rates of cure and excellent final physical properties without a significant loss of processing safety. The preformed nonhalogenated zinc complexes (II) may be added to sulfur vulcanizable rubbers at levels that maintain typical levels of zinc in the rubber compound.
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: October 31, 1989
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Carl R. Parks, Donald J. Burlett
  • Patent number: 4839433
    Abstract: There is disclosed compounds of the structural formula: ##STR1## wherein X is a radical of the structural formula:--CH.sub.2 --CH.sub.2 --NH--CH.sub.2 --Ch.sub.2 --.sub.yand y is 0,1,2 or 3; which when combined with a nonhalogenated vulcanizable diene containing elastomer such as polybutadiene, polyisoprene, styrene/butadiene copolymers, terpolymers of acrylonitrile butadiene and styrene and blends thereof accelerate the rate of vulcanization without detrimentally impacting the processing safety of the rubber. These compounds either in free form structural formula (I) or as preformed complexes with zinc structural formula (II) in the plus 2 valence state offer significantly enhanced rates of cure and excellent final physical properties without a significant loss of processing safety. The preformed nonhalogeneated zinc complexes (II) may be added to sulfur vulcanizable rubbers at levels that maintain typical levels of zinc in the rubber compound.
    Type: Grant
    Filed: December 7, 1987
    Date of Patent: June 13, 1989
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Carl R. Parks, Donald J. Burlett
  • Patent number: 4739014
    Abstract: A process for forming a polymer resistant to degradation comprising chemically bonding unsaturated antioxidants into polymeric materials by adding the antioxidant to the polymeric material, introducing a free radical initiator and causing the initiator to generate free radicals and bond the antioxidant to the polymeric material.
    Type: Grant
    Filed: March 14, 1983
    Date of Patent: April 19, 1988
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Carl R. Parks, Dane K. Parker
  • Patent number: 4714742
    Abstract: There are disclosed cyanamide derivatives as vulcanization rate modifiers which when added to customary cure packages, accelerate the rate of vulcanization and result in vulcanizates having improved characteristics and age resistance.
    Type: Grant
    Filed: October 20, 1986
    Date of Patent: December 22, 1987
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Roger J. Hopper, Carl R. Parks
  • Patent number: 4155955
    Abstract: Polymers are reacted with antioxidants such as N-(4-anilinophenyl) methacrylamide in the presence of a free radical initiator system of the azo, azonitrile or Redox type.
    Type: Grant
    Filed: September 9, 1977
    Date of Patent: May 22, 1979
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Carl R. Parks
  • Patent number: 4087619
    Abstract: Antioxidants such as the reaction product of p-amino-diphenylamine and glycidyl methacrylate [3-N-(4'-anilinophenyl) amino-2-hydroxypropyl methacrylate], and the reaction product of n-hexyl-N'-phenyl-p-phenylenediamine and glycidyl methacrylate [3-[N-(4'-anilinophenyl)-N-(1,3-dimethylbutyl)]amino-2-hydroxy-propyl methacrylate], age resistant polymers having monomeric age resisters physically combined therewith and oxidation resistant polymeric compositions prepared by free radical polymerization techniques involving the use of said antioxidants as monomers.
    Type: Grant
    Filed: April 9, 1976
    Date of Patent: May 2, 1978
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Carl R. Parks
  • Patent number: 3979436
    Abstract: Antioxidants such as the reaction product of p-aminodiphenylamine and glycidyl methacrylate [3-N-(4'-anilinophenyl)amino-2-hydroxypropyl methacrylate], and the reaction product of n-hexyl-N'-phenyl-p-phenylenediamine and glycidyl methacrylate [3-[N-(4'-anilinophenyl)-N-(1,3-dimethylbutyl)]amino-2-hydroxypropyl methacrylate], age resistant polymers having monomeric age resistors physically combined therewith and oxidation resistant polymeric compositions prepared by free radical polymerization techniques involving the use of said antioxidants as monomers.
    Type: Grant
    Filed: March 13, 1974
    Date of Patent: September 7, 1976
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Carl R. Parks