Patents by Inventor James M. Watson

James M. Watson 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).

  • Polymerization inhibitor for vinyl aromatic compounds
    Patent number: 4086147
    Abstract: Disclosed is a process for the distillation of readily polymerizable vinyl aromatic compounds and a new polymerization inhibitor therefor. The process comprises subjecting a vinyl aromatic compound to elevated temperatures in a distillation system in the presence of a new polymerization inhibitor comprising m-nitro-p-cresol.
    Type: Grant
    Filed: December 10, 1976
    Date of Patent: April 25, 1978
    Assignee: Cosden Technology, Inc.
    Inventor: James M. Watson
  • Polymerization of styrene
    Patent number: 4070419
    Abstract: Disclosed is a process for the production of polystyrene which comprises the steps of contacting styrene monomer with gaseous nitric oxide (NO) and thereafter subjecting the styrene monomer to polymerization conditions. An advantageous increase in the rate of polymerization for the styrene results.
    Type: Grant
    Filed: December 1, 1975
    Date of Patent: January 24, 1978
    Assignee: Cosden Technology, Inc.
    Inventor: James M. Watson
  • Polymerization inhibitor for vinyl aromatic compounds
    Patent number: 4061545
    Abstract: Disclosed is a process for the distillation of readily polymerizable vinyl aromatic compounds which comprises subjecting such compounds to distillation conditions in the presence of an effective amount of a combination of phenothiazine and a phenolic compound, preferably tert-butylcatechol (TBC), as a polymerization inhibitor system in the presence of oxygen.
    Type: Grant
    Filed: February 19, 1976
    Date of Patent: December 6, 1977
    Assignee: Cosden Technology, Inc.
    Inventor: James M. Watson
  • Polymerization inhibitor for vinyl aromatic compounds
    Patent number: 4040912
    Abstract: Disclosed is a process for the distillation of readily polymerizable vinyl aromatic compounds and a new polymerization inhibitor therefor. The process comprises subjecting a vinyl aromatic compound to distillation conditions in a distillation system and adding to the system the new polymerization inhibitor comprising an adduct of nitric oxide and styrene.
    Type: Grant
    Filed: December 9, 1974
    Date of Patent: August 9, 1977
    Assignee: Cosden Technology, Inc.
    Inventor: James M. Watson
  • Polymer composition
    Patent number: 4006202
    Abstract: A new polymer composition which is a terpolymer of styrene, an elastomer and SO.sub.2, and the process for the manufacture of such terpolymer. The terpolymer composition of the present invention is one comprised of 64 to 98% by weight styrene copolymerized with 1 to 12% by weight of an elastomer and 1 to 24% by weight SO.sub.2.
    Type: Grant
    Filed: October 2, 1972
    Date of Patent: February 1, 1977
    Assignee: Cosden Oil & Chemical Company
    Inventor: James M. Watson
  • Alpha, gamma-bis-diphenylene-beta-phenyl allyl as a polymerization inhibitor for vinyl aromatic compounds
    Patent number: 3993547
    Abstract: Disclosed is a process for the distillation of readily polymerizable vinyl aromatic compounds and a new polymerization inhibitor therefor. The process comprises subjecting a vinyl aromatic compound to distillation conditions in a distillation system and adding to the system the new polymerization inhibitor comprising alpha, gamma-bis-diphenylene-beta-phenyl allyl.
    Type: Grant
    Filed: January 24, 1975
    Date of Patent: November 23, 1976
    Assignee: Cosden Technology, Inc.
    Inventor: James M. Watson
  • Polymerization inhibitor for vinyl aromatic compounds
    Patent number: 3988212
    Abstract: Disclosed is a process for the distillation of readily polymerizable vinyl aromatic compounds and a new polymerization inhibitor therefor. The process comprises subjecting a vinyl aromatic compound to distillation conditions in a distillation system and adding to the system the new polymerization inhibitor comprising a mixture of N-nitroso diphenyl amine and a dinitro-O-cresol.
    Type: Grant
    Filed: March 21, 1975
    Date of Patent: October 26, 1976
    Assignee: Cosden Technology, Inc.
    Inventor: James M. Watson
  • Polymerization inhibitor for vinyl aromatic compounds
    Patent number: 3986937
    Abstract: Disclosed is a process for the distillation of readily polymerizable vinyl aromatic compounds which comprises subjecting such compounds to distillation conditions in the presence of an effective amount of N.sub.2 O.sub.3 as a polymerization inhibitor.
    Type: Grant
    Filed: December 9, 1974
    Date of Patent: October 19, 1976
    Assignee: Cosden Technology, Inc.
    Inventor: James M. Watson
  • Process for the production of poly-n-butenes
    Patent number: 3985822
    Abstract: A process for the production of poly-n-butenes having a reduced content of isobutylene from isobutylene-containing C.sub.4 feed stocks in a molecular weight range between 1,300 and 350 under controlled polymerization conditions, at a temperature range of 65.degree.-115.degree.F and in the presence of promoted aluminum chloride in quantity of 0.02 to 0.1% by weight based on total hydrocarbon feed, and the poly-n-butene products so produced.
    Type: Grant
    Filed: March 5, 1976
    Date of Patent: October 12, 1976
    Assignee: Cosden Technology, Inc.
    Inventor: James M. Watson
  • NO polymerization inhibitor for vinyl aromatic compound distillation
    Patent number: 3964979
    Abstract: Disclosed is a process for the distillation of readily polymerizable vinyl aromatic compounds which comprises subjecting such compounds to distillation conditions in the presence of an effective amount of NO as a polymerization inhibitor in the substantial absence of oxygen.
    Type: Grant
    Filed: December 9, 1974
    Date of Patent: June 22, 1976
    Assignee: Cosden Technology, Inc.
    Inventor: James M. Watson
  • NO.sub.2 polymerization inhibitor for vinyl aromatic compound distillation
    Patent number: 3964978
    Abstract: Disclosed is a process for the distillation of readily polymerizable vinyl aromatic compounds which comprises subjecting such compounds to distillation conditions in the presence of an effective amount of NO.sub.2 as a polymerization inhibitor.
    Type: Grant
    Filed: December 9, 1974
    Date of Patent: June 22, 1976
    Assignee: Cosden Technology, Inc.
    Inventor: James M. Watson
  • Production of aromatic beta alcohols
    Patent number: 3954890
    Abstract: Condensed ring polycyclic aromatic beta-alcohols are produced by a process which includes initially reacting a cyclic ketone, such as cyclohexanone with a secondary amine to yield an enamine of the cyclic ketone. The enamine is thereafter reacted with an ethylenically unsaturated ketone, such as methyl vinyl ketone, to yield a condensed ring ketone such as octalone which is thereafter dehydrogenated, preferably with a copper chromite catalyst to yield a pure aromatic beta-alcohol such as beta-naphthol.
    Type: Grant
    Filed: March 23, 1972
    Date of Patent: May 4, 1976
    Assignee: Cosden Oil & Chemical Company
    Inventor: James M. Watson
  • Nitrosyl chloride as a polymerization inhibitor for vinyl aromatic compounds
    Patent number: 3933599
    Abstract: Disclosed is a process for the distillation of readily polymerizable vinyl aromatic compounds which comprises subjecting such compounds to distillation conditions in the presence of an effective amount of NOCl as a polymerization inhibitor in the substantial absence of oxygen.
    Type: Grant
    Filed: December 9, 1974
    Date of Patent: January 20, 1976
    Assignee: Cosden Technology, Inc.
    Inventor: James M. Watson