Patents by Inventor Robert C. Sentman

Robert C. Sentman 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).

  • Process for the manufacture of polyamide from dinitrile and diamine in contact with an ester of an oxygenated phosphorus compound catalyst and a strong base
    Patent number: 4749776
    Abstract: The process for manufacturing a nylon-type polyamide from a dinitrile, a diamine and water in the presence of a catalyst is improved by using as a catalyst an ester of oxygenated phosphorus compound in conjunction with a strong base. For example, high quality nylon-6,6 is manufactured by contacting adiponitrile, hexamethylene diamine and water with an ester of an oxygenated phosphorous compound and sodium hydroxide at an elevated temperature and pressure.
    Type: Grant
    Filed: November 3, 1986
    Date of Patent: June 7, 1988
    Assignee: The Standard Oil Company
    Inventors: Robert C. Sentman, Benedict S. Curatolo, Gerald P. Coffey
  • Process for the manufacture of polyamides from diamine and diamide utilizing carboxamide as catalyst
    Patent number: 4734487
    Abstract: Nylon-type polyamides are produced from a diamine and a diamide in contact with a catalyst comprising a carboxamide. For example, high quality nylon-6,6 is manufactured by contacting hexamethylenediamine and adipamide in water with a carboxamide, at an elevated temperature and pressure.
    Type: Grant
    Filed: December 16, 1985
    Date of Patent: March 29, 1988
    Assignee: The Standard Oil Company
    Inventors: Benedict S. Curatolo, Robert C. Sentman, Gerald P. Coffey
  • Process for the manufacture of polyamides from diamine and diamide utilizing urea as catalyst
    Patent number: 4732965
    Abstract: Nylon-type polyamides are produced from a diamine and a diamide in contact with a catalyst comprising a urea, thiourea, or derivatives thereof. For example, high quality nylon-6,6 is manufactured by contacting hexamethylenediamine and adipamide in water with urea, thiourea, or derivatives thereof catalyst, at an elevated temperature and pressure.
    Type: Grant
    Filed: December 16, 1985
    Date of Patent: March 22, 1988
    Assignee: The Standard Oil Company
    Inventors: Benedict S. Curatolo, Robert C. Sentman, Gerald P. Coffey
  • Process for the manufacture of polyamide from diamine and dinitrile utilizing (1) copper containing compound and (2) oxygen containing compound of phosphorus or sulfur as catalyst mixture
    Patent number: 4725666
    Abstract: Polyamides are produced from diamines, dinitriles, and water in contact with a two-component catalyst system comprising (1) at least one copper containing compound and (2) at least one oxygen containing compound of phosphorus or sulfur.
    Type: Grant
    Filed: June 6, 1986
    Date of Patent: February 16, 1988
    Assignee: The Standard Oil Company
    Inventors: Benedict S. Curatolo, Robert C. Sentman, Gerald P. Coffey
  • Process for the manufacture of polyamide from diamines and diamides catalyzed by silicon compounds
    Patent number: 4719285
    Abstract: Nylon-type polyamides are produced from a diamine and a diamide in contact with a catalyst comprising a silicon compound. For example, high quality nylon-6,6 is manufactured by contacting hexamethylenediamine and adipamide in water with silica gel, at an elevated temperature and pressure.
    Type: Grant
    Filed: September 17, 1986
    Date of Patent: January 12, 1988
    Assignee: The Standard Oil Company
    Inventors: Benedict S. Curatolo, Robert C. Sentman, Gerald P. Coffey
  • Process for the manufacture of polyamide from diamine and diamide utilizing phosphorus amide as catalyst
    Patent number: 4689394
    Abstract: Nylon-type polyamides are produced from a diamine and a diamide in contact with a catalyst comprising a phosphorus amide. For example, high quality nylon-6,6 is manufactured by contacting hexamethylenediamine and adipamide in water with a phosphorus amide compound at an elevated temperature and pressure.
    Type: Grant
    Filed: December 16, 1985
    Date of Patent: August 25, 1987
    Assignee: The Standard Oil Company
    Inventors: Benedict S. Curatolo, Robert C. Sentman, Gerald P. Coffey
  • Process for the manufacture of polyamide from diamine and diamide utilizing oxygenated compound of carbon, boron, nitrogen and sulfur as catalyst
    Patent number: 4640976
    Abstract: Nylon-type polyamides are produced from a diamine and a diamide in contact with an oxygenated compound of carbon, boron, nitrogen or sulfur catalyst. For example, high quality nylon-6,6 is manufactured by contacting hexamethylenediamine and adipamide in water with an oxygenated compound of carbon, boron, nitrogen or sulfur at an elevated temperature and pressure.
    Type: Grant
    Filed: August 9, 1985
    Date of Patent: February 3, 1987
    Assignee: The Standard Oil Company
    Inventors: Benedict S. Curatolo, Robert C. Sentman, Gerald P. Coffey
  • Process for the preparation of polyamide from omega-aminonitrile utilizing an oxygenated sulfur compound as catalyst
    Patent number: 4629776
    Abstract: A catalytic process for the production of high molecular weight nylon-type polyamides from omega-aminonitriles has been discovered. The process comprises contacting an omega-aminonitrile, water and a catalytic amount of an oxygenated sulfur compound catalyst. In one embodiment, sulfuric acid is utilized to polymerize 6-aminocapronitrile to nylon-6, at an elevated temperature and pressure.
    Type: Grant
    Filed: December 16, 1985
    Date of Patent: December 16, 1986
    Assignee: The Standard Oil Company
    Inventors: Benedict S. Curatolo, Robert C. Sentman, Gerald P. Coffey
  • Process for the manufacture of spinnable polyamides utilizing a mixture of an oxygenated phosphorus compound and an oxygenated boron compound as catalyst
    Patent number: 4603192
    Abstract: The process for manufacturing a nylon-type polyamide from a dinitrile, a diamine and water in the presence of a catalyst is improved by using as a catalyst an oxygenated phosphorus compound and an oxygenated boron compound. For example, high quality nylon-6,6 is manufactured by contacting adiponitrile, hexamethylene diamine and water with boric acid and phosphorous acid at an elevated temperature and pressure.
    Type: Grant
    Filed: January 10, 1985
    Date of Patent: July 29, 1986
    Assignee: The Standard Oil Company
    Inventors: Gerald P. Coffey, Robert S. Sherrard, Jr., Benedict S. Curatolo, Robert C. Sentman
  • Preparation of polyamide from omega-aminonitrile with oxygen containing phosphorus catalyst
    Patent number: 4568736
    Abstract: A catalytic process for the production of high molecular weight nylon-type polyamides from omega-aminonitriles has been discovered. The process comprises contacting an omega-aminonitrile, water and a catalytic amount of an oxygenated phosphorus compound catalyst.
    Type: Grant
    Filed: September 17, 1984
    Date of Patent: February 4, 1986
    Assignee: The Standard Oil Company
    Inventors: Benedict S. Curatolo, Robert C. Sentman, Gerald P. Coffey
  • Catalytic process for the manufacture of polyamides from diamines and diamides
    Patent number: 4543407
    Abstract: Nylon-type polyamides are produced from a diamine and a diamide in contact with an oxygenated phosphorus compound catalyst. For example, high quality nylon-6,6 is manufactured by contacting hexamethylenediamine and adipamide in water with an oxygenated phosphorus compound at an elevated temperature and pressure.
    Type: Grant
    Filed: December 3, 1984
    Date of Patent: September 24, 1985
    Assignee: The Standard Oil Company
    Inventors: Benedict S. Curatolo, Robert C. Sentman, Gerald P. Coffey
  • Process for the manufacture of polyamides utilizing a mixture of an oxygenated phosphorus compound and a molybdenum compound as catalyst
    Patent number: 4542205
    Abstract: The process for manufacturing a nylon-type polyamide from a dinitrile, a diamine, water and a catalyst is improved by using as a catalyst an oxygenated phosphorus compound and a molybdate compound. For example, high quality nylon-6,6 is manufactured by contacting adiponitrile, hexamethylene diamine, water with disodium phosphite and sodium molybdate at an elevated temperature and pressure.
    Type: Grant
    Filed: September 17, 1984
    Date of Patent: September 17, 1985
    Assignee: The Standard Oil Company
    Inventors: Benedict S. Curatolo, Robert C. Sentman, Gerald P. Coffey
  • Preparation of spinnable polyamide from dinitrile/diamine/water with metal salt of oxygenated phosphorus compound catalyst
    Patent number: 4490521
    Abstract: The process for manufacturing a spinnable polyamide from a dinitrile, a diamine, water and a catalyst is improved by using as a catalyst a metal salt of an oxygenated phosphorus compound. For example, high quality nylon-6,6 is manufactured by contacting adiponitrile, hexamethylene diamine, water and disodium phosphite at an elevated temperature and pressure.
    Type: Grant
    Filed: October 11, 1983
    Date of Patent: December 25, 1984
    Assignee: The Standard Oil Company
    Inventors: Gerald P. Coffey, Robert C. Sentman, Benedict S. Curatolo