Patents Represented by Attorney Leon J. Bercovitz
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Patent number: 4617025Abstract: This invention relates to polyalkylenes which contain both halogen and ester groups, to the preparation thereof, and to the use thereof as pour depressants for fuel oils. This invention also relates to polyalkylene esters.Type: GrantFiled: April 22, 1985Date of Patent: October 14, 1986Assignee: Petrolite CorporationInventors: Michael I. Naiman, John A. Schield
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Patent number: 4579956Abstract: Amino-phosphonates are prepared by reacting an enamine with a phosphite ester, for example, according to the equation ##STR1## where OR' is an alcohol moiety and NR.sub.2 is an amino moiety, both R and R' being preferably hydrocarbon such as alkyl or R.sub.2 is part of a ring structure. These compounds have many uses, for example, as corrosion inhibitors, scale inhibitors, fuel stabilizers, etc. In addition, amino-phosphonates can be converted to alpha, beta - unsaturated phosphonates according to the equation ##STR2## which are useful in forming flame retardant polymers and copolymers.Type: GrantFiled: October 20, 1978Date of Patent: April 1, 1986Assignee: Petrolite CorporationInventor: Derek Redmore
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Patent number: 4564707Abstract: 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: GrantFiled: March 19, 1981Date of Patent: January 14, 1986Assignee: Petrolite CorporationInventor: Bernardus A. Oude Alink
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Patent number: 4539404Abstract: 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. 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: GrantFiled: November 24, 1982Date of Patent: September 3, 1985Assignee: Petrolite CorporationInventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw
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Patent number: 4522643Abstract: This invention relates to alkylated derivatives of polymerized aromatic nitrogen heterocyclic compounds as illustrated by polymerized pyridine, quinoline and derivatives thereof; and uses thereof.These compositions are polymerized by treating said aromatic nitrogen heterocyclic compounds at elevated temperatures and pressures with catalytic amounts of alkyl halides and then alkylating the polymerized products formed.The compositions used in this invention are useful in providing improved means for controlling microbiological organisms including bacteria, fungi, algae, protozoa and the like, present in water and hydrocarbon systems.Type: GrantFiled: March 12, 1981Date of Patent: June 11, 1985Assignee: Petrolite CorporationInventor: Patrick M. Quinlan
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Patent number: 4494977Abstract: This invention relates to quaternary ammonium salts of .alpha.-1,4-thiazine alkanephosphonic acids; and to the preparation and uses thereof.Type: GrantFiled: September 15, 1980Date of Patent: January 22, 1985Assignee: Petrolite CorporationInventor: Patrick M. Quinlan
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Patent number: 4492658Abstract: This invention relates to Thioureylene prepared by reacting an oxyalkylated polyamine with thiourea and to uses of such Thioureylene for example in removing oils, solids, and combinations thereof from aqueous systems, etc.Type: GrantFiled: July 21, 1980Date of Patent: January 8, 1985Assignee: Petrolite CorporationInventor: Thomas J. Bellos
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Patent number: 4480095Abstract: 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: GrantFiled: December 18, 1978Date of Patent: October 30, 1984Assignee: Petrolite CorporationInventor: Bernardus A. Oude Alink
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Patent number: 4471098Abstract: This invention relates to polyalkylenes which contain both halogen and ester groups, to the preparation thereof, and to the use thereof as pour depressants for fuel oils. This invention also relates to polyalkylene esters.Type: GrantFiled: March 11, 1982Date of Patent: September 11, 1984Assignee: Petrolite CorporationInventors: Michael I. Naiman, John A. Schield
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Preparation of mixture of nitrogen and sulfur-nitrogen heterocyclics and use in corrosion inhibiting
Patent number: 4446056Abstract: A process of preparing sulfur-containing compositions which comprises reacting hexahydrotriazines, or the precursors thereof, with sulfur or sulfur-containing compounds. The products of the reaction are useful as corrosion inhibitors. Additionally, ketones or the reaction products of ketones and ammonia are reacted with sulfur or sulfur-containing compounds to yield corrosion inhibitors.Type: GrantFiled: December 10, 1979Date of Patent: May 1, 1984Assignee: Petrolite CorporationInventor: Neil E. S. Thompson -
Patent number: 4442286Abstract: This invention relates to the preparation of amines by the reduction of imines with phosphorous acid, preferably under basic conditions.Type: GrantFiled: October 15, 1976Date of Patent: April 10, 1984Assignee: Petrolite CorporationInventor: Derek Redmore
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Patent number: 4418195Abstract: This invention relates to silicon-containing thiazines and to the process of preparing them. These are illustrated by the following formulae: ##STR1## where R and R' are substituted groups, for example hydrocarbon groups such as alkyl, aryl, cycloalkyl, etc.; A is alkylene, Z is a sulfur-containing group such as S, SO, SO.sub.2 and X is an anion.These compositions have a wide variety of uses including their use as corrosion inhibitors, microbiocides, etc.Type: GrantFiled: July 11, 1977Date of Patent: November 29, 1983Assignee: Petrolite CorporationInventor: Patrick M. Quinlan
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Patent number: 4411814Abstract: This invention relates to the use of polyamines and/or polyamine salts, preferably those having 20 or less amino groups, as demulsifiers. This invention is particularly useful in breaking emulsions formed in surfactant flooding of oil bearing subterranean formations.Type: GrantFiled: February 10, 1981Date of Patent: October 25, 1983Assignee: Petrolite CorporationInventor: Charles W. Burkhardt
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Patent number: 4404112Abstract: This invention relates to the use of silicone-induced hydrocarbon foams as well stimulants, for example as illustrated by their use in fracturing well formations, removal of paraffin in wells, removal of condensate hydrocarbons from blocked gas wells, etc.Type: GrantFiled: July 8, 1981Date of Patent: September 13, 1983Assignee: Petrolite CorporationInventors: Gary A. Scherubel, Michael A. Thorne
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Patent number: 4396417Abstract: Thixotropic high internal phase ratio emulsions containing biologically active agents including biocides, insecticides, fungicides, herbicides, defoliants, desiccants, seed disinfectants, growth regulators, etc., which are useful, for example, in agricultural applications. These emulsions include oily in non-oily and non-oily in oily emulsions having an internal phase of at least 60% but preferably 80-95%.Type: GrantFiled: April 26, 1978Date of Patent: August 2, 1983Assignee: Petrolite CorporationInventor: Kenneth J. Lissant
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Patent number: 4392556Abstract: A fluid pressure actuator which locks in the extended position. The lock is a roller operated, dual segment pawl mechanism that unlocks in response to a pressure difference between extend and retract pressures. The two lock segments, chamfered for engagement with the cylinder end, are in diametrically opposed slots in the actuator piston head. A cylindrical section projects from the segment portion. An end view of the lock is mushroom shaped. Two rollers, held in alignment normal to the actuator centerline by a cage integral with an unlock rod, operate in conjunction with the lock cam surfaces in such a manner as to carry the radial loading imposed when in the lock mode.The rolling action of the rollers, combined with the radial application of locking force provides low friction operation of the lock.Type: GrantFiled: August 5, 1980Date of Patent: July 12, 1983Assignee: Arkwin Industries, Inc.Inventor: Edward J. Deutsch
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Patent number: 4393026Abstract: 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: GrantFiled: November 10, 1981Date of Patent: July 12, 1983Assignee: Petrolite CorporationInventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw
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Patent number: 4384655Abstract: A vessel includes a body having a chamber normally containing pressurized gas and enclosed by a removable closure provided with a gas charging valve. Inadvertent disassembly of the closure when the chamber contains pressurized gas is precluded by a planar cover plate captively retained by the charging valve and normally masking tool-receiving members on the closure. Removal of the valve/cover plate unit initially releases a resilient seal carried by the inner face of the valve juxtaposed the outer face of the closure and subsequently progressively exposes to the atmosphere a gas bleeding passage formed in the attachment stem of the valve to gradually release all pressurized gas from the vessel chamber. The closure is only accessible for disassembly following complete removal of the unitary valve and cover plate after which all gas under pressure in the chamber has been relieved.Type: GrantFiled: February 12, 1982Date of Patent: May 24, 1983Inventor: Julius Kendall
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Patent number: 4383933Abstract: This invention relates to a composition comprising an O/W demulsifier and a titanium compound, and to the use thereof as an O/W demulsifier. The O/W demulsifier contains amino groups, preferably in quaternary form. The titanium compound is believed to combine with the quaternary amino group to form a quaternary amino-titanium complex.Type: GrantFiled: January 30, 1981Date of Patent: May 17, 1983Assignee: Petrolite CorporationInventor: Fred W. Jenkins
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Patent number: 4383926Abstract: This invention relates to N,N-diallyl-3-hydroxy azetidinium salts, homo- and co-polymers thereof; and the preparation thereof. This invention also relates to the use of the above polymers as demulsifiers.Type: GrantFiled: January 15, 1982Date of Patent: May 17, 1983Assignee: Petrolite CorporationInventors: Rudolf S. Buriks, Eva G. Lovett