Patents by Inventor Walter A. Butte, Jr.

Walter A. Butte, Jr. 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).

  • High selectivity cyanoalkylation process
    Patent number: 4271088
    Abstract: In a cyanoalkylation process involving the reaction of a cyanoalkene compound such as acrylonitrile with a compound containing a labile hydrogen such as ethylene glycol, to form a cyanoalkylated product such as 3,3'-ethylenedioxybis(propionitrile), the conversion of the cyanoalkene is limited to about 60 to 96%, preferably 70 to 85%, whereby the formation of byproducts is reduced from that which is obtained when the conversion of the cyanoalkene is greater than about 96%.
    Type: Grant
    Filed: May 18, 1979
    Date of Patent: June 2, 1981
    Assignee: Suntech, Inc.
    Inventors: Walter A. Butte, Jr., Wesley R. Cherry
  • Cyanoalkylation process
    Patent number: 4271089
    Abstract: In a cyanoalkylation process involving the reaction of a cyanoalkene compound such as acrylonitrile with a compound containing a labile hydrogen such as ethylene glycol, to form a cyanoalkylated product such as 3,3'-ethylenedioxy-bis(propionitrile), the reaction is carried out in the presence of cyanoalkylated product in addition to the cyanoalkylated product which is formed in situ by reaction of the reactants. High yields of cyanoalkylated product and low formation of by-products are obtained.
    Type: Grant
    Filed: July 5, 1979
    Date of Patent: June 2, 1981
    Assignee: Suntech, Inc.
    Inventors: Walter A. Butte, Jr., Wesley R. Cherry
  • Hydrogenation of aliphatic nitriles to primary amines
    Patent number: 4235821
    Abstract: In the process of hydrogenating aliphatic nitriles to primary amines whereby the nitrile is hydrogenated in a solvent system containing added ammonia using a cobalt or ruthenium catalyst, the improvement of employing an ether as solvent and carrying out the hydrogenation in the presence of water in an amount of from about 5% to about 15% by volume of the ether solvent whereby the rate of reaction is increased, and selectivity to primary amine products is increased.
    Type: Grant
    Filed: February 1, 1979
    Date of Patent: November 25, 1980
    Assignee: Suntech, Inc.
    Inventors: Walter A. Butte, Jr., William J. Murtaugh, Richard E. Mitchell
  • Process for hydrogenating aromatic dinitriles
    Patent number: 4222961
    Abstract: A process for the hydrogenation of aromatic dinitriles to the corresponding cycloaliphatic aminomethyl compounds by(1) hydrogenating the nitrile in an ether solvent containing water and ammonia using nickel or cobalt as catalyst,(2) removing by-products from the aromatic diamine thus produced,(3) subjecting the aromatic diamine to hydrogenation with a ruthenium catalyst in an aqueous solvent system devoid of ammonia and(4) isolating the cycloaliphatic diamine product.
    Type: Grant
    Filed: February 1, 1979
    Date of Patent: September 16, 1980
    Assignee: Suntech, Inc.
    Inventors: Walter A. Butte, Jr., William J. Murtaugh, Howard P. Angstadt
  • Hydrogenation of aromatic nitriles to primary amines
    Patent number: 4186146
    Abstract: In the process of hydrogenating aromatic nitriles to primary amines whereby the nitrile is hydrogenated in a solvent system containing added ammonia using a cobalt or nickel catalyst, the improvement of employing an ether as solvent and carrying out the hydrogenation in the presence of water in an amount of from about 10% to about 20% by volume of the ether solvent whereby the rate of reaction is increased, secondary amine by-products are reduced and catalyst may be recycled without adverse effects.
    Type: Grant
    Filed: February 1, 1979
    Date of Patent: January 29, 1980
    Assignee: Suntech, Inc.
    Inventors: Walter A. Butte, Jr., William J. Murtaugh
  • Hydrogenation of aromatic amines
    Patent number: 4181680
    Abstract: A process for the hydrogenation of aromatic bis-methylamines, such as m- and p-xylylenediamine, to the corresponding cycloaliphatic compound by hydrogenating the bis-methylamine in water as a solvent system, devoid of added ammonia and in the presence of a supported ruthenium catalyst.
    Type: Grant
    Filed: February 1, 1979
    Date of Patent: January 1, 1980
    Assignee: Suntech, Inc.
    Inventors: Walter A. Butte, Jr., Howard P. Angstadt
  • High selectivity cyanoethylation process
    Patent number: 4171322
    Abstract: An improvement in the cyanoethylation process using a bed of basic ion exchange resin catalyst wherein the conversion of the acrylonitrile is limited to the range between from about 60% to about 96%. A monoadduct intermediate can be recycled. As a result of the limitation to the conversion selectivity as to the desired product is in excess of 95%. The improved process, e.g., has a selectivity of 98% when the conversion is about 82% and the reactants are acrylonitrile and ethylene glycol.
    Type: Grant
    Filed: June 16, 1978
    Date of Patent: October 16, 1979
    Assignee: Suntech, Inc.
    Inventors: Walter A. Butte, Jr., Wesley R. Cherry
  • Isomerization of cyclohexanebis(methylamine) stereoisomers
    Patent number: 4086276
    Abstract: A process for isomerizing cyclohexanebis(methylamine) by contacting it with an organometallic compound at a temperature of from about 100.degree. to about 200.degree. C.
    Type: Grant
    Filed: March 25, 1977
    Date of Patent: April 25, 1978
    Assignee: Suntech, Inc.
    Inventor: Walter A. Butte, Jr.
  • Hydrogenation of terephthalnitrile
    Patent number: 4070399
    Abstract: A process for the preparation of 1,4-bis-(aminomethyl)cyclohexane by hydrogenating a solvent solution of terephthalonitrile containing at least about 5% by volume of ammonia, said hydrogenation being conducted at a temperature between about 100.degree. and about 150.degree. C, at a pressure of at least about 750 psig, and in the presence of an oxide supported catalyst consisting of from about 10% to 45% by weight of palladium and from about 90% to about 55% by weight of ruthenium.
    Type: Grant
    Filed: September 20, 1976
    Date of Patent: January 24, 1978
    Assignee: Suntech, Inc.
    Inventor: Walter A. Butte, Jr.