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| Number | Title | Issue Date |
| 7429309 | Coating compositions comprising alkyl ketene dimers and alkyl succinic anhydrides for use in paper making Additives for paper making are disclosed herein. Specifically, the additives are wax-free alternatives to conventional coatings, including ASA, AKD and optionally an acrylic containing composition. Other additives may be included in the coating, such as cationic par... | 09/30/2008 |
| 7256236 | Maleated polypropylenes and processes for the preparation thereof Disclosed are methods for advantageously producing maleated polypropylenes having a relatively high percentage of bound maleic anhydride, based on the total amount of maleic anhydride moieties present in the grafting reaction product, and the maleated polypropylenes... | 08/14/2007 |
| 7183359 | Polypropylene having a high maleic anhydride content Polypropylene having high maleic anhydride content, between about 5 and about 45 wt %, may be prepared by first reacting a metallocene-prepared polypropylene having terminal unsaturation with one mole equivalent of maleic anhydride to give polypropylene having a sin... | 02/27/2007 |
| 7091285 | Adducts of mid-range vinylidene content polyisobutylene polymer products and methods for making the same A reaction product comprising an adduct of a mid-range vinylidene content PIB polymer composition and maleic anhydride, a phenolic compound or a compound having a reactive site for subsequent amination. The PIB composition comprises a relatively low molecular weight... | 08/15/2006 |
| 7091306 | Process for preparing polyalkenylsuccinimides The present invention relates to an improved process for preparing polyalkenylsuccinimides having a sediment level less than 0.1 vol % comprising the steps of: (a) preparing a polyalkenyl derivative of an unsaturated acidic reagent... | 08/15/2006 |
| 7087801 | Process for catalytic selective oxidation of a hydrocarbon substrate A reactor system for oxidative conversion of hydrocarbons comprising at least one reactor tube being provided with a plurality of perforations along a wall of the tube and a reaction zone with an active catalyst arranged on tube side and/or shell side of the reactor... | 08/08/2006 |
| 6989455 | Two-stage process for the hydrogenation of maleic acid to 1,4-butanediol In the process for the conversion of maleic acid to gamma-butyrolactone, 1.4-butanediol and/or tetrahydrofuran, a feedstream comprising maleic acid is hydrogenated in a first hydrogenation zone to produce a reaction product comprising succinic acid and unreacted hyd... | 01/24/2006 |
| 6958404 | Method for the hydrogenation of maleic anhydride and related compounds in a fluid bed reactor C4-dicarboxylic acids or derivatives thereof are hydrogenated in the gas phase in a fluidized-bed reactor. It is possible to use catalyst compositions known per se. ... | 10/25/2005 |
| 6956004 | Vanadium/phosphorus mixed oxide catalyst Active vanadium/phosphorus mixed oxide catalyst for the conversion of non-aromatic hydrocarbons, e.g., n-butane, into maleic anhydride. The catalyst is prepared from the catalyst precursor, that is, prepared by the reaction of a source of vanadium in an organic medi... | 10/18/2005 |
| 6867171 | Low molecular weight branched alkenyl succinic acid derivatives prepared from low molecular weight polyisobutene and unsaturated acidic reagents This invention is directed to a new low molecular weight branched alkenyl succinic acid derivative that may be prepared by reacting a low molecular weight polyisobutene (PIB) having from about 8 to about 32 carbon atoms, and wherein at least about 50% of the olefini... | 03/15/2005 |
| 6515146 | Process for catalytic selective oxidation of a hydrocarbon substrate Process for the oxidation of a hydrocarbon substrate to a corresponding oxidised hydrocarbon compound by contacting the hydrocarbon substrate with an oxygen containing atmosphere in presence of a catalyst being active in the oxidation of the hydrocarbon s... | 02/04/2003 |
| 6462207 | Polyethylene glycol diene derivatives A series of polyethylene glycol derivatives possessing a diene moiety has been prepared and characterized. The reactivities of these derivatives in various Diels-Alder reactions have been demonstrated. The potential derivatives, which can be made by vario... | 10/08/2002 |
| 6372943 | Polyenepolycarboxylic acids, derivatives thereof with respect to carboxyl groups, or salts of these Polyenepolycarboxylic acids represented by the following formula (1); ##STR1## (wherein n represents an integer of 0 to 5 and m represents an integer of 1 or 2, provided m is 1 when n is 0), or derivatives thereof at their carboxyl group(s) or their salts... | 04/16/2002 |
| 6348132 | Alkenyl succinic anhydride compositons and the use thereof Novel alkenyl succinic anhydride (ASA) compositions and the use thereof. The disclosed ASA compositions may be derived from maleic anhydride and olefins having desirable carbon chain lengths and double bond distributions. The present ASA compositions prov... | 02/19/2002 |
| 6225475 | Enhanced production of hydrocarbyl anhydrides To form a mixture of anhydrides suitable for use as a curing agent for epoxy resins, a mixture formed from maleic anhydride and a liquid monoolefin is heated to produce a reaction mass containing a liquid phase comprised of alkenyl succinic anhydride, mal... | 05/01/2001 |
| 6130257 | Compositions of enantiomeric diacyl tartaric anhydrides and preparation thereof The present invention relates to compositions comprising mixtures of two enantiomeric forms of diacyl tartaric anhydride and mixtures obtainable by reacting an organic compound with a mixture comprising two enantiomeric forms of diacyl tartaric anhydride.... | 10/10/2000 |
| 6018057 | Process for producing acid anhydrides A process for producing anhydrides by passing a solution of the acid, preferably an organic polyacid, which is to undergo anhydridation over an acidified clay and a process for producing the catalysts therefor.... | 01/25/2000 |
| 5952514 | Process for preparing succinic anhydride Maleic anhydride can be hydrogenated to succinic anhydride with particularly high conversion rates by a catalytic liquid-phase hydrogenation with hydrogen, by carrying out the hydrogenation continuously at a pressure of 10 to 400 bar and a reaction temper... | 09/14/1999 |
| 5880070 | Cross-linked succinimides from an acid derivative, a polyamine, and a polycarboxylic acid derivative A polyalkylene succinimide composition prepared by reacting a mixture of an acid derivative, a polycarboxylic acid derivative; and a polyamine under reactive conditions. The acid derivative can be an alkenyl or alkylsuccinic acid derivative, a copolymer o... | 03/09/1999 |
| 5770744 | Process for the preparation of succinic anhydride Maleic anhydride can be hydrogenated with hydrogen to give succinic anhydride by a catalyzed liquid-phase hydrogenation, by carrying out the hydrogenation continuously at a pressure of 50 to 400 bar and a reaction temperature of 60° to 180° C. on oxygen... | 06/23/1998 |
| 5646215 | Polybutylene containing reactive unsaturated functionality The invention relates to a functionalized polybutylene polymer which contains at least one unsaturated group in its molecule, said functionalized polybutylene being prepared by reacting (A) an anhydride-functional polybutylene with (B) an allyl-functional... | 07/08/1997 |
| 5644001 | Resin-free succinimides process of making, and compositions containing same This invention relates to novel pure hydrocarbyl succinylating agents, substantially pure derivatives thereof, to a method of preparation of pure substituted succinylating agents and their derivatives, and to the use of thereof as additives for fuels and ... | 07/01/1997 |
| 5616730 | Process for preparing succinic anhydride Succinic anhydride (SA) can be prepared by catalytic hydrogenation of maleic anhydride (MA) with hydrogen in the liquid phase, by reacting a starting material composed of from 5 to 100% by weight of MA and from 95 to 0% by weight of SA, based on the total... | 04/01/1997 |
| 5523417 | Resin-free succinimides This invention relates to novel pure hydrocarbyl succinylating agents, substantially pure derivatives thereof, to a method of preparation of pure substituted succinylating agents and their derivatives, and to the use of thereof as additives for fuels and ... | 06/04/1996 |
| 5505931 | Acid cleavable compounds, their preparation and use as bifunctional acid-labile crosslinking agents Novel compounds, their preparation and their use as bifunctional acid-labile crosslinking agents which are cleavable in an acid environment at a pH of below about 5.0 allowing for the controlled release of nucleophilic groups attached thereto are disclose... | 04/09/1996 |
| 5464549 | Oil soluble dispersants suitable for use in fuels and lubricants The dispersants are formed by reacting (a) at least one dispersant having at least one primary or secondary amino group and/or at least one hydroxyl group, with (b) at least one polyolefinic compound substituted at each terminal position by a succinic gro... | 11/07/1995 |
| 5454964 | Substituted acylating agents This invention relates to a process for producing substituted acylating agents by the reaction of an enophile with an ene by the thermal route wherein (a) the molar ratio of the enophile to the ene is at least 3:1 and (b) the reaction pressure is raised t... | 10/03/1995 |
| 5440004 | Method and apparatus for the production of alkylene carbonate A method for the production of an alkylene carbonate at high yields and high selectivity by a reaction between an alkylene glycol and urea, the method being capable to preventing the deposition of a white crystal in the reflux condenser used in a conventi... | 08/08/1995 |
| 5420303 | Process for the maleation of polyethylene waxes A process for the preparation of a maleated polyethylene wax is disclosed. This process entails mixing in the melt phase polyethylene, maleic anhydride, free radical initiator and a chain transfer agent m-di-isopropylbenzene. This process can be a continu... | 05/30/1995 |
| 5405973 | Vinylbenzyl group-containing succinic anhydride Anhydride-functional polymerizable monomers having the structure: ##STR1## and polymers and reactive compositions prepared from these monomers are disclosed. The reactive compositions are especially useful in primer, topcoat, and in clearcoat/basecoa... | 04/11/1995 |
| 5393441 | Two-cycle oil additive Briefly stated, the present invention comprises novel compounds useful as two-cycle oil additives obtained by reacting an alkyl acrylamide with a compound selected from the group consisting of polyalkylenepolyamines, polyalkylenepolyamines functionalized ... | 02/28/1995 |
| 5364945 | Anhydride-functional monomers and polymers and reactive compositions prepared from same Anhydride-functional polymerizable monomers having the structure: ##STR1## and polymers and reactive compositions prepared from these monomers are disclosed. The reactive compositions are especially useful in primer and clearcoat/basecoat application... | 11/15/1994 |
| 5360862 | High clarity emulsions containing high melt viscosity maleated polypropylene wax A process is provided for the production of an emulsifiable polypropylene wax having a melt viscosity from 1000 to 5000 cP at 190° C. This process entails reacting at a temperature below 190° C. a thermally degraded polypropylene wax having a melt visco... | 11/01/1994 |
| 5342965 | Process for producing branched fats Branched fatty substances may be produced by reacting maleic acid anhydride with fatty acids having 16 to 24 carbon atoms and 1, 2, 3, 4, or 5 double bonds, or the esters of such acids, with alcohols containing 1 to 4 carbon atoms, in the presence of at l... | 08/30/1994 |
| 5290954 | High clarity emulsions containing high melt viscosity maleated polypropylene wax A process is provided for the production of an emulsifiable polypropylene wax having a melt viscosity from 1000 to 5000 cP at 190° C. This process entails reacting at a temperature below 190° C. a thermally degraded polypropylene wax having a melt visco... | 03/01/1994 |
| 5278319 | Process for the production of hydrocarbon partial oxidation products An improved process is provided for the production of a partial oxidation product by the vapor phase reaction of a hydrocarbon with substantially pure oxygen in the presence of a suitable catalyst. In the improved process, the partial oxidation product is... | 01/11/1994 |
| 5260456 | Process for producing itaconic anhydride A process for producing anhydrides by passing a solution of the acid, preferably an organic polyacid, which is to undergo anhydridation over an acidified clay and a process for producing the catalysts therefor.... | 11/09/1993 |
| 5212213 | Radiation-curable rosin-based resins This invention relates to novel radiation-curable, rosin-based resins and the process for preparing them. In particular, the invention relates to unsaturated polyester resins containing fully fumarated rosin and/or fully maleated rosin which have softenin... | 05/18/1993 |
| 5210280 | Process for the preparation of alkanedioic acid derivatives A process for the preparation of alkanedioic acid derivatives comprising reacting an alkenoic acid derivative with carbon monoxide and a nucleophilic compound having a mobile hydrogen atom in the presence of a catalyst system comprising a source of a Grou... | 05/11/1993 |
| 5196602 | Two-stage maleic anhydride hydrogenation process for 1,4-butanediol synthesis Maleic anhydride is hydrogenated to produce 1,4-butanediol in a two-stage process. In the first stage maleic anhydride and/or maleic acid contacted with hydrogen at a temperature of about 100° C. to about 350° C. in the presence of a suitable hydrogenat... | 03/23/1993 |
