Patents by Inventor Bernard R. Meltsner

Bernard R. Meltsner 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 of phosphonitrilic chloride
    Patent number: 5006324
    Abstract: High molecular weight phosphonitrillic chloride polymers that are soluble in benzene, toluene and tetrahydrofuran, tetrameric phosphonitrilic chloride, or mixtures thereof at elevated temperatures in the presence of a catalytic amount of an aprotic Lewis acid halogen acceptor. For example, soluble high molecular weight phosphonitrillic chloride can be made by heating the aforementioned trimer at 220.degree.-270.degree. C. in the presence of 5-1000 ppm of AlCl.sub.3.
    Type: Grant
    Filed: January 10, 1984
    Date of Patent: April 9, 1991
    Assignee: Ethyl Corporation
    Inventors: Charles H. Kolich, Bernard R. Meltsner, Henry G. Braxton, Jr.
  • Chemical process for preparing di-ortho benzyl phenols
    Patent number: 4514577
    Abstract: Phenols having an unsubstituted ortho-position are benzylated by reaction with a benzyl alcohol in contact with an activated alumina catalyst especially gamma alumina at a temperature sufficient to maintain the reactants in the vapor phase.
    Type: Grant
    Filed: October 15, 1982
    Date of Patent: April 30, 1985
    Assignee: Ethyl Corporation
    Inventors: Allen H. Filbey, Henry G. Braxton, Jr., Bernard R. Meltsner
  • Process for ortho dealkylation of aromatic amines
    Patent number: 4405812
    Abstract: Ortho-methyl groups are preferentially removed from o-methyl substituted aromatic amines by contacting with a nickel catalyst at about 200.degree.-400.degree. C.
    Type: Grant
    Filed: February 19, 1982
    Date of Patent: September 20, 1983
    Assignee: Ethyl Corporation
    Inventors: Walter K. Dean, Bernard R. Meltsner
  • Chemical process
    Patent number: 4308407
    Abstract: Phenols with a methyl group substituted on the phenolic benzene ring, such as 2,6-di-tert-butyl-p-cresol, can be produced by reacting a halomethyl group substituted on a phenol such as 2,6-di-tert-butyl-4-chloromethylphenol, with hydrogen in the presence of a hydrogenation catalyst, such as palladium.
    Type: Grant
    Filed: August 18, 1980
    Date of Patent: December 29, 1981
    Assignee: Ethyl Corporation
    Inventors: Bernard R. Meltsner, Joseph D. Odenweller