Patents by Inventor Bernardus A. Oude Alink

Bernardus A. Oude Alink 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).

  • Corrosion inhibition in deep gas wells by phosphate esters of poly-oxyalkylated thiols
    Patent number: 4511480
    Abstract: Phosphate esters of oxyalkylated thiols are used as corrosion inhibitors for ferrous metals in deep gas wells.
    Type: Grant
    Filed: July 20, 1983
    Date of Patent: April 16, 1985
    Assignee: Petrolite Corporation
    Inventors: Benjamin T. Outlaw, Bernardus A. Oude Alink, Joe A. Kelley, Carol S. Claywell
  • 2,5,6,8,9-Penta-alkyl or penta-aralkyl-substituted 1,3,7-triazabicyclo(3,3,1) non-3-enes and trialkyl or triaralkyl-substituted tetrahydropyrimidines
    Patent number: 4490293
    Abstract: This invention relates to the preparation of penta-alkyl (or aralkyl)-substituted 1,3,7-triazabicyclo (3,3,1) non-3-enes (TBN's) and trialkyl (or aralkyl)-substituted tetrahydropyrimidines (THP's) by reacting trialkyl (or aralkyl)-hexahydrotriazines and/or N,N'-dialkylidene 1,1-diamino alkanes in the presence of a Lewis acid; and to the products thereof.
    Type: Grant
    Filed: January 3, 1983
    Date of Patent: December 25, 1984
    Assignee: Petrolite Corporation
    Inventor: Bernardus A. Oude Alink
  • Hexahydropyrimidines and corresponding linear polyamines
    Patent number: 4480095
    Abstract: This invention relates to a process of reducing 2,4,5-trialkyl 2,3,4,5-tetrahydropyrimidine and/or 2,5,6,8,9-pentaalkyl 1,3,7-triazabicyclo (3,3,1) non-3-enes to yield 2,4,5-trialkylhexahydropyrimides and/or 2,4,5,6-tetraalkyl-5-(2-azoalkyl) hexahydropyrimidines; and to the cleavage of the above reduced products so as to convert the above hexahydropyrimides from cyclic amines to corresponding linear diamines and triamines. This invention also relates to the products produced by the processes.
    Type: Grant
    Filed: December 18, 1978
    Date of Patent: October 30, 1984
    Assignee: Petrolite Corporation
    Inventor: Bernardus A. Oude Alink
  • Processes for inhibiting corrosion using compounds containing sulfur and amino groups
    Patent number: 4450137
    Abstract: This invention relates to the following:(1) An amino-containing composition characterized by polymercapto groups,(2) A polyamino-containing composition characterized by mercapto or polymercapto groups,(3) A composition characterized by the presence ofA. a mercapto or polymercapto groups, andB. a nitrogen-containing group characterized by at least one of the following:1. an amido or a polyamido group,2. a cyclic amidine or a polycyclic amidine group,3. an epihalohydrin-derived amino-containing group.This invention also relates to the use of the above compositions as corrosion inhibitors.
    Type: Grant
    Filed: October 29, 1982
    Date of Patent: May 22, 1984
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw
  • Processes for inhibiting corrosion using compounds containing sulfur and amino groups
    Patent number: 4450138
    Abstract: This invention relates to the following:(1) An amino-containing composition characterized by polymercapto groups,(2) A polyamino-containing composition characterized by mercapto or polymercapto groups,(3) A composition characterized by the presence ofA. a mercapto or polymercapto groups, andB. a nitrogen-containing group characterized by at least one of the following:1. an amido or a polyamido group,2. a cyclic amidine or a polycyclic amidine group,3. an epihalohydrin-derived amino-containing group.This invention also relates to the use of the above compositions as corrosion inhibitors.
    Type: Grant
    Filed: October 29, 1982
    Date of Patent: May 22, 1984
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw
  • Hydroxy and hydroperoxy tetrahydropyrimidines
    Patent number: 4447606
    Abstract: This invention relates to 5-hydroperoxy and/or 5-hydroxy derivatives of 2,2,4,4-dipentamethylene 5,6-tetramethylene 2,3,4,5-tetrahydropyrimidines; and to the preparation thereof. The compounds of this invention have utility as corrosion inhibitors.
    Type: Grant
    Filed: April 9, 1979
    Date of Patent: May 8, 1984
    Assignee: Petrolite Corporation
    Inventor: Bernardus A. Oude Alink
  • Tetrahydrothiazole phosphonic acids or esters thereof
    Patent number: 4443609
    Abstract: This invention relates to tetrahydrothiazole phosphonic acids or phosphonates and to the preparation thereof by reacting dihydrothiazoles with phosphorous acid or esters thereof.
    Type: Grant
    Filed: May 19, 1980
    Date of Patent: April 17, 1984
    Assignee: Petrolite Corporation
    Inventors: Bernardus A. Oude Alink, Derek Redmore
  • Compounds containing sulfur and amino groups
    Patent number: 4393026
    Abstract: This invention relates to the following:(a) An amino-containing composition characterized by polymercapto groups,(2) A polyamino-containing composition characterized by mercapto or polymercapto groups,(3) A composition characterized by the presence ofA. a mercapto or polymercapto groups, andB. a nitrogen-containing group characterized by at least one of the following:1. an amido or a polyamido group,2. a cyclic amidine or a polycyclic amidine group,3. an epihalohydrin-derived amino-containing group.This invention also relates to the use of the above compositions as corrosion inhibitors.
    Type: Grant
    Filed: November 10, 1981
    Date of Patent: July 12, 1983
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw
  • Polyols of tetrahydropyrimidines as corrosion inhibitors
    Patent number: 4387074
    Abstract: Methylol derivatives of 2,3,4,5-tetrahydropyrimidines and to uses thereof, particularly as corrosion inhibitors.
    Type: Grant
    Filed: December 31, 1981
    Date of Patent: June 7, 1983
    Assignee: Petrolite Corporation
    Inventors: Bernardus A. Oude Alink, Benjamin T. Outlaw
  • Preparation of perhydrophenanthridines
    Patent number: 4346223
    Abstract: This invention relates to the reduction of THP to perhydrophenanthridines (PHA) with formic acid. This is illustrated by the following equation ##STR1## where R is hydrogen or a substituted group, such as hydrocarbon, for example alkyl, etc.; and X and Y are hydrogen or a substituted group, such as a hydrocarbon group containing a functional group, for example alkyl-X where X is a functional group such as nitrilo, carboxyl, etc. The perhydrophenanthridines of this invention are useful as corrosion inhibitors and as fuel stability additives.
    Type: Grant
    Filed: May 18, 1981
    Date of Patent: August 24, 1982
    Assignee: Petrolite Corporation
    Inventor: Bernardus A. Oude Alink
  • Polymerized polyols of tetrahydropyrimidines
    Patent number: 4343930
    Abstract: Polymerized methylol derivatives of 2,3,4,5-tetrahydropyrimidines and to uses thereof, particularly as corrosion inhibitors.
    Type: Grant
    Filed: September 29, 1980
    Date of Patent: August 10, 1982
    Assignee: Petrolite Corporation
    Inventors: Bernardus A. Oude Alink, Benjamin T. Outlaw
  • Polyols of tetrahydropyrimidines
    Patent number: 4343941
    Abstract: Methylol derivatives of 2,3,4,5-tetrahydropyrimidines and to uses thereof, particularly as corrosion inhibitors.
    Type: Grant
    Filed: October 4, 1979
    Date of Patent: August 10, 1982
    Assignee: Petrolite Corporation
    Inventors: Bernardus A. Oude Alink, Benjamin T. Outlaw
  • Compounds containing sulfur and amino groups
    Patent number: 4332967
    Abstract: This invention relates to the following:(1) An amino-containing composition characterized by polymercapto groups,(2) A polyamino-containing composition characterized by mercapto or polymercapto groups,(3) A composition characterized by the presence ofA. a mercapto or polymercapto groups, andB. a nitrogen-containing group characterized by at least one of the following:1. an amido or a polyamido group,2. a cyclic amidine or a polycyclic amidine group,3. an epihalohydrin-derived amino-containing group.This invention also relates to the use of the above compositions as corrosion inhibitors.
    Type: Grant
    Filed: June 19, 1980
    Date of Patent: June 1, 1982
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw
  • Process of preparing hexahydropyrimidines
    Patent number: 4311841
    Abstract: This invention relates to hexahydropyrimidines (HHP) of the formula ##STR1## where R' is a substituted group and R is hydrogen or a substituted group; the process of preparing and the uses therefor, particularly as deterioration inhibitors in hydrocarbon fuels.
    Type: Grant
    Filed: November 21, 1977
    Date of Patent: January 19, 1982
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Bernardus A. Oude Alink
  • N-Substituted 1,2,3,4-tetrahydropyrimidines, Hexahydropyrimidines and process for their preparation
    Patent number: 4281126
    Abstract: This invention relates to the following compounds: ##STR1## Process for their preparation and uses thereof, where R.sub.1 and R.sub.2 are substituted groups, and R.sub.6, R.sub.5, R.sub.4 and R.sub.3 are hydrogen or substituted groups.
    Type: Grant
    Filed: January 30, 1978
    Date of Patent: July 28, 1981
    Assignee: Petrolite Corporation
    Inventor: Bernardus A. Oude Alink
  • Substituted pyridines
    Patent number: 4220785
    Abstract: This invention relates to substituted pyridines prepared by reacting aldehydes, amines, lower carboxylic acids such as acetic acid in the presence of oxygen. The N-substituted pyridinium salts formed can be converted to pyridines by thermal dealkylation.
    Type: Grant
    Filed: August 25, 1978
    Date of Patent: September 2, 1980
    Assignee: Petrolite Corporation
    Inventors: Bernardus A. Oude Alink, Neil E. S. Thompson
  • .DELTA.-2 Tetrahydropyrimidines as corrosion inhibitors
    Patent number: 4212843
    Abstract: A process of converting 2,3,4,5-tetrahydropyrimidines (.DELTA.-1) having at least one hydrogen in the 2-position to 3,4,5,6-tetrahydropyrimidines (.DELTA.-2) which comprises hydrogenating and dehydrogenating said .DELTA.-1 tetrahydropyrimidines. Such hydrogenating and dehydrogenating may be done in either two sequential steps or in one step.Said .DELTA.-1 tetrahydropyrimidines can also be converted to .DELTA.-2 tetrahydropyrimidines by heating in the essential absence of a solvent, and preferably under basic conditions.In addition, corresponding hexahydropyrimidimidines can be converted to corresponding .DELTA.-2 tetrahydropyrimidines by dehydrogenation.This invention also relates to the use of .DELTA.-2 tetrahydropyrimidines, particularly as corrosion inhibitors.
    Type: Grant
    Filed: September 15, 1978
    Date of Patent: July 15, 1980
    Assignee: Petrolite Corporation
    Inventor: Bernardus A. Oude Alink
  • Dithioles
    Patent number: 4190727
    Abstract: The process of reacting dithiolium compounds with an hydroxy compound such as water, alcohols, etc., under basic conditons so as to substitute the hydroxy constituent into the 3 or 5 position of the thiolium ring thus replacing the positive ionic valency with a covalent bond; and to the dithiole compositions formed and uses therefor, for example as corrosion inhibitors, etc. The process can be reversed to reform the original dithiolium compounds by reacting the dithiole compound under acidic conditions.
    Type: Grant
    Filed: May 13, 1976
    Date of Patent: February 26, 1980
    Assignee: Petrolite Corporation
    Inventor: Bernardus A. Oude Alink
  • Pyridines and dihydropyridines
    Patent number: 4179570
    Abstract: A process of preparing alkyl (or aralkyl) pyridines and N-substituted alkyl (or aralkyl) dihydropyridines which comprises treating a2,5,6,8,9-pentaalkyl (or aralkyl) substituted 1,3,7-triazabicyclo (3,3,1) non-3-ene with a Lewis acid.
    Type: Grant
    Filed: December 18, 1978
    Date of Patent: December 18, 1979
    Assignee: Petrolite Corporation
    Inventor: Bernardus A. Oude Alink
  • Substituted pyridines
    Patent number: 4174370
    Abstract: This invention relates to substituted pyridines prepared by reacting aldehydes, amines, lower carboxylic acids such as acetic acid in the presence of oxygen. The N-substituted pyridinium salts formed can be converted to pyridines by thermal dealkylation.
    Type: Grant
    Filed: August 25, 1978
    Date of Patent: November 13, 1979
    Assignee: Petrolite Corporation
    Inventors: Bernardus A. Oude Alink, Neil E. S. Thompson