| Patent Number |
Title Of Patent |
Date Issued |
| 5840662 |
Lubricating oils of improved friction durability |
November 24, 1998 |
| The frictional durability of lubricating oils, including power transmitting fluids and in particular automatic transmission fluids, are improved by incorporating a combination of low potency friction modifiers, ashless and/or metal-containing antioxidants, and oil-soluble phosphorus- |
| 5837787 |
Process for producing elastic thermoplastic .alpha.-olefin/cyclic olefin copolymers |
November 17, 1998 |
| Rubbery, amorphous cyclic olefin/.alpha.-olefin copolymers in a molar ratio from 5/95 to 30/70. The copolymers are rubbery and have the general properties of thermoplastic elastomers, e.g. good elastic recovery, toughness, and high elasticity, and have a relatively low glass transition |
| 5833722 |
Fuel oil compositions with improved lubricity properties |
November 10, 1998 |
| The lubricity of low sulphur fuels is enhanced by incorporation of a lubricity enhancing additive in combination with a nitrogen compound. |
| 5833721 |
Additive for hydrocarbon oils |
November 10, 1998 |
| An antifoam additive for hydrocarbon oils and in particular fuel oils comprises the combination of an antifoam agent and an ashless dispersant. |
| 5830832 |
Overbased carboxlates |
November 3, 1998 |
| High basicity calcium carboxylates useful as lubricant and fuel additives and in paints are obtained by carbonating a mixture of a C.sub.7 to C1.sub.5 carboxylic preferably branched chain oxo-acid and excess calcium at from 15.degree. to 60.degree. C. in the presence of a volatile solven |
| 5827806 |
Preparation of sulfurized phenol additives intermediates and compositions |
October 27, 1998 |
| A process is described wherein olefins or acetylenic compounds are reacted with sulfurised intermediates to produce nitrile seal compatible additives. Olefin or acetylinic compound reaction with sulfurised compounds e.g. sulfurised phenols results in low chlorine additives. Also disc |
| 5824717 |
Peroxide and radiation curable compositions containing isobutylenene copolymers having acrylate |
October 20, 1998 |
| The invention relates to peroxide- or radiation-curable copolymer containing compositions and to the resulting radiation- or peroxide- cured compositions. The compositions may optionally contain a reinforcing filler. Copolymers employed in the compositions are acrylate modified copol |
| 5821308 |
Metalation and functionalization of polymers and copolymers |
October 13, 1998 |
| There is provided a method of introducing functionality into a copolymer of an isoolefin and an alkylstyrene at the alkylbenzyl carbon atom comprising the steps of: forming a solution of said copolymer in a hydrocarbon solvent; adding to said polymer solution an alkali metal Cs, K, Na |
| 5820749 |
Hydrogenation process for unsaturated hydrocarbons |
October 13, 1998 |
| The invention relates to catalytic hydrogenation processes for hydrocarbon molecules of number-average molecular weight greater than about 180, and to use therein of an inert catalyst support comprising porous refractory substrate particles having: a) a pore volume distribution wherein i |
| 5817722 |
Low viscosity, high solids polyesterdiols and compositions containing same |
October 6, 1998 |
| Polyesterdiols having low viscosities of less than 3500 cps, high content of non-volatile matter in excess of 96 wt %, and narrow molecular weight distribution of less than about 1.4 are prepared by esterification of one or more aliphatic dicarboxylic acids or ester derivatives thereof u |
| 5817607 |
Biodegradable branched synthetic ester base stocks and lubricants formed therefrom |
October 6, 1998 |
| A biodegradable lubricant which is prepared from: about 60-99% by weight of at least one biodegradable synthetic ester base stock which comprises the reaction product of: a branched or linear alcohol having the general formula R(OH).sub.n, wherein R is an aliphatic or cyclo-aliphatic gro |
| 5814715 |
Amorphous olefin polymers, copolymers, methods of preparation and derivatives thereof |
September 29, 1998 |
| The present invention includes related methods and uses, including composition comprising the polymer derived from a monomer having the formula:and optionally at least one monomer selected from the group consisting of monomers having the formula:wherein R is a hydrocarbon or substituted |
| 5814708 |
Process for oxidative functionalization of polymers containing alkylstyrene |
September 29, 1998 |
| This invention provides a method by which an alkylstyrene containing polymer may be exclusively functionalized at the primary benzylic carbon site of the styrenic monomer. The process of this invention comprises the treatment of an alkylstyrene containing polymer dissolved in a non-polar |
| 5814707 |
Process for oxidative functionalization of polymers containing alkylstyrene |
September 29, 1998 |
| This invention provides a method by which an alkylstyrene containing polymer may be exclusively functionalized at the primary benzylic carbon site of the styrenic monomer. The process of this invention comprises the treatment of an alkylstyrene containing polymer dissolved in a non-polar |
| 5814110 |
Chemical compositions and use as fuel additives |
September 29, 1998 |
| Distillate fuel is treated with additives whose structure match the crystal planes of the wax which crystallizes from the fuel to produce crystals below 4000 nanometres in size, suitable additive include novel sulpho-carboxylic materials particularly their esters and amine derivative |
| 5811379 |
Polymers derived from olefins useful as lubricant and fuel oil additives, processes for preparat |
September 22, 1998 |
| Polymers (including copolymers) derived from one or more olefins, such including ethylene and C.sub.3 -C.sub.20 .alpha.-olefins such as propylene and 1-butene, which polymers have (a) an average ethylene sequence length, ESL, of from about 1.0 to less than about 3.0; (b) an average of at |
| 5811377 |
Low molecular weight basic nitrogen-containing reaction products as enhanced phosphorus/boron ca |
September 22, 1998 |
| An oil-soluble reaction product of phosphorus-, low molecular weight basic nitrogen-, and optional boron-containing compounds is provided. This reaction product can solubilize significantly more phosphorus and boron per weight of compound than other known compounds and is used as an |
| 5807949 |
Polymers and additive compositions |
September 15, 1998 |
| Homo- or co-polymers derived from one or more alpha-olefins having a number average molecular weight of up to 15,000 and an isotacticity of 75% or greater, and their use as Cold Flow Improvers in crude, fuel or lubricating oil. |
| 5807946 |
Vehicle parts comprising ethylene/2-olefin/vinylnorbornene elastomeric polymers |
September 15, 1998 |
| Motor vehicle brake parts based on an ethylene, alpha-olefin, vinyl norbornene elastomeric polymer are manufactured with more efficiency due to brake part compounds having lower viscosity, faster and fuller cures than ethylene, alpha-olefins, diene monomer compounds, where the diene |
| 5807931 |
Process for oxidative functionalization of polymers containing alkylstyrene |
September 15, 1998 |
| This invention provides a method by which an alkylstyrene containing polymer may be exclusively functionalized at the primary benzylic carbon site of the styrenic monomer. The process of this invention comprises the treatment of an alkylstyrene containing polymer dissolved in a non-polar |
| 5804667 |
Dispersant additives and process |
September 8, 1998 |
| The invention pertains to improved lubricating oil dispersants wherein a fractionating polymer is prepared prior to functionalization (e.g., in the Koch reaction) for making dispersant additives. In one aspect, it was discovered that by fractionating a polymer to remove light hydrocarbon |
| 5804537 |
Crankcase lubricant compositions and method of improving engine deposit performance |
September 8, 1998 |
| A low phosphorus passenger car motor oil containing an oil of lubricating viscosity as the major component and a tri-metal detergent mixture as a minor component, wherein the tri-metal detergent mixture comprises at least one calcium overbased metal detergent, at least one magnesium |
| 5804094 |
Low base number sulphonates |
September 8, 1998 |
| Low base number (LBN) sulphonates derived from high molecular weight sulphonic acids have low viscosity, are chloride free and are not skin sensitisers. In their preparation, neutralisation of high molecular weight sulphonic acids or partially neutralised soaps of high molecular weight |
| 5801113 |
Polymerization catalyst systems, their production and use |
September 1, 1998 |
| The invention is generally directed toward a catalyst system useful for polymerizing olefins. The catalyst system of this invention comprises a supported ion-exchange catalyst system. |
| 5798319 |
High stability and low metals esters based on 3,5,5-trimethyl-1-hexanol |
August 25, 1998 |
| A lubricant which is prepared from at least one synthetic ester composition exhibiting thermal and oxidative stability which comprises the reaction product of 3,5,5-trimethyl-1-hexanol and an acid or anhydride; and a lubricant additive package; whereby the incorporation of an antioxidant |
| 5798054 |
Lubricant and combination lubricant and refrigerant composition |
August 25, 1998 |
| A lubricant and combination lubricant and refrigerant composition for use in a refrigerating machine in which a substitute freon refrigerant, which lubricant contains a polymer of a fumaric ester or a fumaric ester and a copolymerizable alkylene, and optionally contains an organic carbox |
| 5795946 |
High barrier propylene compositions and their use in packaging applications |
August 18, 1998 |
| Film is provided wherein, at least one layer comprises polymer, a molecular majority of which is derived from propylene, having water vapor transmission rate of less than or equal to about (-7.4428 g.times..mu.m/m.sup.2 .times.day.times.% polymer crystallinity) (% polymer crystallini |
| 5792730 |
Lubricating oil succinimide dispersants derived from heavy polyamine |
August 11, 1998 |
| A succinimide dispersant, which is the reaction product of hydrocarbons or polymers functionalized by halogenation (e.g. chlorination), thermal "ene" reaction or free radical grafting and derivatized with a heavy polyamine. A heavy polyamine is a mixture of polyalkylenepolyamines compris |
| 5790413 |
Plant parameter detection by monitoring of power spectral densities |
August 4, 1998 |
| A method for determining whether a current state of a process variable output signal is within acceptable limits includes the following steps: establishing reference data by sampling a plant's process variable output signal when the plant is operating at steady state and analyzing the |
| 5789615 |
Process for the preparation of sulphonates |
August 4, 1998 |
| Sulphonates are prepared by the neutralisation of a sulphonic acid with a basic hydroxide or oxide. The process requires the staged addition of sulphonic acid to a reaction mixture comprising basic hydroxide or oxide dispersed in a water/diluent mixture; the reaction mixture is basic |
| 5789356 |
Synergistic combinations for use in functional fluid compositions |
August 4, 1998 |
| The present invention provides functional fluid compositions containing a major portion of oil of lubricating viscosity and a novel and synergistic combination of an acylated nitrogen-containing compound having an olefinic substituent averaging in carbon number from 20 to 60 and at least |
| 5789335 |
Supported Lewis acid catalysts for hydrocarbon conversion reactions |
August 4, 1998 |
| A supported Lewis acid catalyst, which comprises an inorganic oxide substrate having immobilized thereon at least one Lewis acid and a modifying agent containing at least one functional moiety capable of reacting with surface hydroxyl groups originally present on said substrate and w |
| 5788722 |
High functionality low molecular weight oil soluble dispersant additives useful in oleaginous co |
August 4, 1998 |
| Hydrocarbyl substituted C.sub.4 to C.sub.10 monounsaturated dicarboxylic acid, anhydrides or esters, e.g. polyisobutenyl succinic anhydride, preferably made by reacting polymer of C.sub.2 to C.sub.10 monoolefin, preferably polyisobutylene, having a molecular weight of about 700 to 12 |
| 5786291 |
Engineered catalyst systems and methods for their production and use |
July 28, 1998 |
| This invention relates to supported metallocene catalyst systems and to methods for their production and use. Specifically, this invention relates to supported catalyst systems having unique, predetermined properties resulting from the designed distribution of catalyst components within |
| 5783735 |
Process for preparing polymeric amides useful as additives in fuels and lubricating oils |
July 21, 1998 |
| A process for preparing polymeric amides is disclosed. The process comprises sequentially reacting a hydrocarbon polymer functionalized (e.g., via the Koch reaction) to contain acid, ester, thioacid and/or thioester groups with a heavy polyamine to form a partially derivatized produc |
| 5783321 |
ZSM-5 zeolite |
July 21, 1998 |
| Crystalline tectosilicate ZSM-5 zeolite may be prepared which comprise substantially needle-shaped agglomerates. Tectosilicate ZSM-5 zeolite having a .sup.29 Si NMR spectrum having at least three peaks indicates the presence of Si atoms in the structure having 0, 1 or 2 T-atoms as neares |
| 5783168 |
ZSM-22 zeolite |
July 21, 1998 |
| ZSM-22 zeolite which is particularly pure and whose synthesis does not require the synthesis mixture to be stirred can be produced by the addition to the synthesis mixture of a small quantity e.g. 1000 ppm, of preformed ZSM-22 zeolite seed crystals. |
| 5780563 |
Supported lewis acid catalysts derived from superacids useful for hydrocarbon conversion reactio |
July 14, 1998 |
| A supported Lewis acid catalyst system for catalyzing hydrocarbon conversion reactions including cationic polymerization, alkylation, isomerization and cracking reactions is disclosed, wherein the catalyst system comprises an inorganic oxide support having immobilized thereon a least |
| 5780556 |
Thermoset coating compositions having improved hardness and curing properties |
July 14, 1998 |
| The present invention provides an amino curable polyester oligomer composition having low viscosity and a narrow molecular weight distribution comprising one or a mixture of oligomers (a) and (b): ##STR1## wherein R is the residue of at least one aliphatic, cycloaliphatic or mixe |
| 5780554 |
Saturated polyolefins having terminal aldehyde or hydroxy substituents and derivatives thereof |
July 14, 1998 |
| A saturated polymer having a terminal aldehyde or hydroxy substituent which may be used directly or in a derivative form as a dispersant for both fuel and lubricating oil compositions, wherein the saturated polymer has a M.sub.n of about 300 to 10,000, and is derived from a polyolefin wh |
| 5777041 |
Saturated polyolefins having terminal aldehyde or hydroxy substituents and derivatives thereof |
July 7, 1998 |
| A saturated polymer having a terminal aldehyde or hydroxy substituent which may be used directly or in a derivative form as a dispersant for both fuel and lubricating oil compositions, wherein the saturated polymer has a M.sub.n of about 300 to 10,000, and is derived from a polyolefin wh |
| 5777025 |
Process for preparing polyalkenyl substituted C.sub.4 to C.sub.10 dicarboxylic acid producing ma |
July 7, 1998 |
| A low-sediment, low-tar, chlorine-free thermal process for preparing oil-soluble polyalkenyl derivatives of monounsaturated C.sub.4 -C.sub.10 dicarboxylic acid producing compounds is disclosed. The process involves reacting the dicarboxylic acid producing compound with a polyalkene at |
| 5773567 |
Carboxylic amide-containing polymers for use as fuel or lubricating oil additives and processes |
June 30, 1998 |
| Processes for producing saturated polymers monosubstituted with carboxylic amides are disclosed. One process comprises reacting a monounsaturated hydrocarbon polymer with carbon monoxide and a polyamine containing at least two amino groups at least one of which is a reactive amino group, |
| 5773392 |
Oil soluble complexes of phosphorus-containing acids useful as lubricating oil additives |
June 30, 1998 |
| This invention provides an oil-soluble complex of an oil-insoluble phosphorus-containing acid and an alcohol. This complex is a useful antiwear additive in lubricating oils, particularly automatic transmission fluids. |
| 5772705 |
Fuel oil compositions |
June 30, 1998 |
| The lubricity of low sulphur fuels is enhanced by incorporation of a cold flow improver. |
| 5770539 |
Lewis acid catalysts supported on porous polymer substrate |
June 23, 1998 |
| Immobilized Lewis Acid catalyst comprising porous polymer film substrate having at least one Lewis Acid immobilized on pore surfaces thereof, said polymer film substrate prior to having said Lewis Acid immobilized thereon comprising a porous film of functionalized polymer and, optionally |
| 5767208 |
High temperature olefin polymerization process |
June 16, 1998 |
| A polymerization process for olefinically or acetylenically unsaturated monomers is disclosed. The process comprises contacting the one or more of the monomers with a suitable ionic catalyst system in the presence of a long-chain, linear alkyl ligand-containing organo aluminum compound. |
| 5767047 |
Biodegradable branched synthetic ester base stocks and lubricants formed therefrom |
June 16, 1998 |
| A biodegradable lubricant which is prepared from: about 60-99% by weight of at least one biodegradable synthetic ester base stock which comprises the reaction product of: a branched or linear alcohol having the general formula R(OH).sub.n, wherein R is an aliphatic or cyclo-aliphatic gro |
| 5766713 |
Elastomeric vehicle hoses |
June 16, 1998 |
| Elastomeric vehicle hoses based on ethylene, alpha-olefin, vinyl norbornene elastomeric polymers will exhibit improved cure state and improved long term heat aging. Long term heat aging is an important consideration, as vehicle lives get longer and under the hood temperatures get higher. |
| 5763678 |
Hydroformylation process employing loop reactors |
June 9, 1998 |
| An exothermic chemical reaction, for example, hydroformylation, is carried out in a series of loop reactors. Fresh reactant feed is supplied not only to the first reactor in the series but also to the second reactor, thereby achieving improved overall throughput while maintaining a stabl |
