Patents Assigned to Pennzoil Products Company
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Patent number: 6340467Abstract: A solid or semi-solid hydrocarbon gel comprising: a) a solid or semi-solid hydrocarbon; and b) at least one block copolymer selected from the group consisting of: a triblock copolymer; a radial block copolymer; a multiblock copolymer a diblock copolymer; and mixtures of these polymers. The hydrocarbon gel is useful as an ointment, balm or salve for wounds. Medicinal ingredients may be included in the hydrocarbon gel for application of such ingredients to wounds, burns or injuries.Type: GrantFiled: February 19, 1997Date of Patent: January 22, 2002Assignee: Pennzoil Products CompanyInventor: David S. Morrison
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Patent number: 6130190Abstract: A lubricating composition comprising a liquid crystal and a surfactant is disclosed. The inventive composition increase the lubricity of lubricant oils, reduce the wear rate or metals being lubricated, and increase the load bearing properties of lubricants between various surfaces, for example, within an engine and in the rolling of metals.Type: GrantFiled: November 6, 1997Date of Patent: October 10, 2000Assignee: Pennzoil Products CompanyInventors: Selda Gunsel, Frances E. Lockwood
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Patent number: 6074994Abstract: Non-aqueous solvent-free lamellar liquid crystalline lubricant compositions containing an organic acid component or a salt thereof and an organic acid component are disclosed.Type: GrantFiled: February 4, 1997Date of Patent: June 13, 2000Assignee: Pennzoil Products CompanyInventors: Selda Gunsel, Fran Lockwood
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Patent number: 6066329Abstract: Transparent stiff gel candles comprising a hydrocarbon oil, a wick, and one or more triblock, radial block or multiblock copolymer of a thermoplastic rubber, and optionally a diblock copolymer.Type: GrantFiled: March 3, 1999Date of Patent: May 23, 2000Assignee: Pennzoil Products CompanyInventors: David S. Morrison, William J. Heilman
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Patent number: 5879694Abstract: Transparent stiff gel candles comprising a hydrocarbon oil, a wick, and one or more triblock, radial block or multiblock copolymer of a thermoplastic rubber, and optionally a diblock copolymer.Type: GrantFiled: February 11, 1997Date of Patent: March 9, 1999Assignee: Pennzoil Products CompanyInventors: David S. Morrison, William J. Heilman
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Patent number: 5871765Abstract: Controlled release non-aqueous air care gels comprising from about 1 to about 50 percent on a weight basis of diblock, triblock, multiblock and/or radial block copolymers based on synthetic thermoplastic rubbers. The ratio of the diblock to triblock, multiblock and/or radial block copolymers can be varied from about 0 percent to about 100 percent in either direction. The material to be gelled is a hydrocarbon, one or more hydrocarbon-soluble substances, or mixtures thereof, which based on its physical properties plays an important role in setting the controlled release rate. The composition of the hydrocarbon can vary in carbon length from about C-5 to about C-30 and can vary in vapor pressure up to about 600 mm Hg at 20.degree. C. The hydrocarbon range on a weight basis is from about 20 to about 95 percent of the total weight of the gelled composition.Type: GrantFiled: February 21, 1997Date of Patent: February 16, 1999Assignee: Pennzoil Products CompanyInventors: Richard L. Johnson, David S. Morrison
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Patent number: 5728907Abstract: Tetraalkylmethanes are synthetic lubricants. The preferred structure contains four straight chain alkyl groups which may be the same or different and have from 1 to 2 or 5 to 14 carbon atoms. Mixtures are also disclosed as are novel methods for preparation of the tetraalkylmethanes.Type: GrantFiled: October 27, 1995Date of Patent: March 17, 1998Assignee: Pennzoil Products CompanyInventors: Michael P. Squicciarini, William J. Heilman
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Patent number: 5705604Abstract: This invention relates to novel tire sealer and inflator compositions. The compositions may be aqueous or non-aqueous and comprise a petroleum residual resin sealant, an amorphous polyolefin, an organic solvent, a vapor pressure depressant, and a non-flammable propellant/inflator having an ozone depletion potential of zero. For the aqueous system, the composition further comprises an emulsifier. The compositions are useful for sealing and inflating a punctured tire in combination with a propellant/inflator.Type: GrantFiled: June 28, 1996Date of Patent: January 6, 1998Assignee: Pennzoil Products CompanyInventor: Jiafu Fang
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Patent number: 5705175Abstract: Controlled release insect repellent or insecticide based on a non-aqueous gel composition comprising from about 1 to about 20 weight percent of one or more diblock, triblock, radial block and/or multiblock copolymers, or a mixture thereof, based on synthetic thermoplastic rubbers. The ratio of the diblock copolymer to triblock, radial block and/or multiblock copolymer can be varied from about 0 percent to about 100 percent in either direction. The higher the tri-block percentage, the stiffer the resultant gel. The material to be gelled is a hydrocarbon which based on its physical properties plays an important role in setting the controlled release rate. The composition of the hydrocarbon can vary in carbon chain length from an average of about C-13 to about C-30 and can vary in vapor pressure from about 2.3 mm Hg at 20.degree. C. to less than about 0.1 mm Hg at 20.degree. C. The hydrocarbon range on a weight basis is from about 65 to about 95 percent of the total weight of the gelled composition.Type: GrantFiled: February 29, 1996Date of Patent: January 6, 1998Assignee: Pennzoil Products CompanyInventor: Richard L. Johnson
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Patent number: 5672727Abstract: An alkyl dithiocarbamoyl alkanol that has the formula ##STR1## wherein Z is H or OH, Y is N, X is S, R.sup.1 and R.sup.2 are, selected from the group consisting of H and (C.sub.1 -C.sub.40)hydrocarbon residues R.sup.3, R.sup.4, R.sup.5, R.sup.6 and R.sup.7 are selected from the group consisting of H and (C.sub.1 -C.sub.8)hydrocarbon residues, n is 0 to 4, is an intermediate to prepare a borate ester having the formula ##STR2## The borate esters are anti-wear/anti-oxidant/anti-friction/anti-rust additives for lubricating oil.Type: GrantFiled: June 20, 1996Date of Patent: September 30, 1997Assignee: Pennzoil Products CompanyInventor: I-Ching Chiu
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Patent number: 5618912Abstract: This invention relates to novel tire sealer and inflator compositions. The compositions may be aqueous or non-aqueous and comprise a petroleum residual resin sealant, an amorphous polyolefin, an organic solvent, a vapor pressure depressant, and a non-flammable propellant/inflator having an ozone depletion potential of zero. For the aqueous system, the composition further comprises an emulsifier. The compositions are useful for sealing and inflating a punctured tire in combination with a propellant/inflator.Type: GrantFiled: May 4, 1995Date of Patent: April 8, 1997Assignee: Pennzoil Products CompanyInventor: Jiafu Fang
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Patent number: 5560853Abstract: A borate ester having the formula ##STR1## wherein Y is N, S or O, X is O or S, R.sup.1 and R.sup.2 are, independent of one another, selected from the group consisting of H, (C.sub.1 -C.sub.40)hydrocarbon residues and (C.sub.3 -C.sub.50)cycloalkyl, aryl and aralkyl, each of which may further contain N, O or S, R.sup.3, R.sup.4, R.sup.5, R.sup.6 and R.sup.7 are independent of one another, selected from the group consisting of H and (C.sub.1 -C.sub.8)hydrocarbon residues, n is 0 to 4. An anti-wear/anti-oxidant/anti-friction/anti-rust additive comprises the borate ester of the invention when added to a lubricating oil.Type: GrantFiled: March 13, 1992Date of Patent: October 1, 1996Assignee: Pennzoil Products CompanyInventor: I-Ching Chiu
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Patent number: 5518590Abstract: A sensitive and rapid electrochemical sensor monitors motor oil deterioration, particularly antioxidation property, by determining the antioxidant and antiwear agent level remaining in an oil formulation. The electrochemical sensor is a two- or three-electrode electrochemical cell having a conductive electrolyte liquid or gel-like interphase over the electrode surfaces. The degree of deterioration of a motor oil in service is monitored by measurements of antioxidation or antiwear capacity of the oil. The electrochemical sensor can be used for monitoring other lubricants and hydrocarbons which contain electroactive additives. The electrochemical sensor allows measurements to be performed in-situ, without any chemical or physical pretreatment of the oil.Type: GrantFiled: June 21, 1994Date of Patent: May 21, 1996Assignee: Pennzoil Products CompanyInventor: Jiafu Fang
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Patent number: 5436379Abstract: Fully synthetic lubricating base oil compositions are formulated from blends of 50-97 wt % of synthetic hydrocarbons and 3-30 wt % isobutylene oligomers. The lubricating base oil composition have constant viscosity indexes which are higher than those of the components used to form the compositions. The synthetic hydrocarbon and isobutylene oligomers are combinable in various amounts with conventional additives to form multi-grade engine lubricants, which are shear stable.Type: GrantFiled: January 14, 1994Date of Patent: July 25, 1995Assignee: Pennzoil Products CompanyInventors: William J. Heilman, Clifford G. Venier
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Patent number: 5412007Abstract: A stable composition for suppressing dust which comprises 0.1 to 35 parts by weight of a water-soluble lignosulfonate anionic surfactant, 0.1 to 35 parts by weight of one or more non-ionic surfactants, 5 to 85 parts by weight of a petroleum resin, and 1 to 99 parts by weight of water.Type: GrantFiled: February 4, 1994Date of Patent: May 2, 1995Assignee: Pennzoil Products CompanyInventors: Randall R. Hendrix, Bruce E. Wilburn, Aidan P. Cooney
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Patent number: 5378249Abstract: A biodegradable two-cycle engine oil composition comprises about (a) 20 to 85 wt. % of a heavy ester or a mixture of heavy ester oils characterized by a kinematic viscosity of at least about 7.0 cSt at 100.degree. C., (b) 10 to 85 wt. % of a light ester oil or a mixture of light ester oils characterized by a kinematic viscosity of less than about 6.0 cSt at 100.degree. C., and optionally an additive, wherein the composition has a biodegradability of at least about 66% as measured by the CEC L-33-T-82 method.Type: GrantFiled: June 28, 1993Date of Patent: January 3, 1995Assignee: Pennzoil Products CompanyInventor: David S. Morrison
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Patent number: 5320761Abstract: Lubricant efficiency in an internal combustion engine is improved by determining the frictional coefficient of the lubricant and adding appropriate additives to adjust viscosity and surface tension to optimum ranges. This results in improved fuel economy and reduced engine wear.Type: GrantFiled: July 27, 1992Date of Patent: June 14, 1994Assignee: Pennzoil Products CompanyInventors: David P. Hoult, Francis E. Brown
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Patent number: 5319144Abstract: Thiobisphenols of the formula: ##STR1## wherein X is 1, 2, 3 or 4 and R.sub.1 and R.sub.2 are straight or branch-chained alkyl group of 1 to 10 carbon atoms, which are useful as antiodiants and synergists for antioxidants, are prepared by reaction of a 2,6-dialkylphenol with an excess of sulfur in a solvent comprising a mixture of an alcohol and water wherein the solvent contains from 10 to 50 wt. % of water.Type: GrantFiled: July 28, 1993Date of Patent: June 7, 1994Assignee: Pennzoil Products CompanyInventor: I. Ching Chiu
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Patent number: 5308389Abstract: A water-based composition for spraying on a surface such as an automobile engine, to provide a flexible protective film thereon comprises a water dispersible polyurethane elastomer, an anti-corrosive agent, a thickener, a dispersing agent, an antifreeze agent, and water.Type: GrantFiled: May 5, 1992Date of Patent: May 3, 1994Assignee: Pennzoil Products CompanyInventors: Joseph M. Russo, Randall R. Hendrix
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Patent number: D352904Type: GrantFiled: July 15, 1993Date of Patent: November 29, 1994Assignee: Pennzoil Products CompanyInventors: James E. Kearse, James C. Grissom