| Patent Number |
Title Of Patent |
Date Issued |
| 7615654 |
Direct epoxidation process |
November 10, 2009 |
| A process is disclosed for the epoxidation of an olefin with hydrogen and oxygen in the presence of an oxidation catalyst comprising a transition metal zeolite, and a noble metal catalyst comprising a noble metal and an ion-exchange resin. The process is highly productive and selective i |
| 7595410 |
Direct epoxidation process using improved catalyst composition |
September 29, 2009 |
| A process for producing an epoxide comprising reacting an olefin, hydrogen and oxygen in the presence of a catalyst comprising a titanium or vanadium zeolite, palladium, and lead. The process results in significantly reduced alkane by-product formed by the hydrogenation of olefin. |
| 7531675 |
Direct epoxidation process using improved catalyst composition |
May 12, 2009 |
| Catalysts useful for the direct epoxidation of olefins are disclosed. The catalysts comprise a noble metal, lead, bismuth, and a titanium or vanadium zeolite. The noble metal, lead, and bismuth may be supported on the titanium or vanadium zeolite. The catalyst may also be a mixture c |
| 7528269 |
Process for oxidizing organic compounds |
May 5, 2009 |
| This invention is a process for oxidizing an organic compound with a hydrogen peroxide solution produced by reacting hydrogen and oxygen in the presence of an oxidation catalyst. The hydrogen peroxide is produced by reacting hydrogen and oxygen in a solvent in the presence of a H.sub |
| 7470801 |
Direct epoxidation process using a mixed catalyst system |
December 30, 2008 |
| Catalyst mixtures useful for the direct epoxidation of olefins are disclosed. The catalyst mixture comprises a titanium or vanadium zeolite and a supported catalyst comprising a noble metal, bismuth, and a carrier. The invention includes a process for producing an epoxide comprising |
| 7432384 |
Direct epoxidation process |
October 7, 2008 |
| A process is disclosed for the epoxidation of an olefin with hydrogen and oxygen in the presence of an oxidation catalyst comprising a transition metal zeolite and a polymer-encapsulated noble metal catalyst. The noble metal catalyst comprises a noble metal and an ion-exchange resin. The |
| 7387981 |
Direct epoxidation catalyst and process |
June 17, 2008 |
| A catalyst comprising a transition metal zeolite and a supported noble metal is disclosed. The mean mass diameter of the catalyst is greater than 0.5 mm. The catalyst is formed from transition metal zeolite particles and the supported noble metal particles each having a mean mass dia |
| 7381675 |
Direct epoxidation catalyst |
June 3, 2008 |
| A catalyst comprising a noble metal supported on a diatomaceous earth and a transition metal zeolite is disclosed. The catalyst is used in an epoxidation process comprising reacting an olefin, hydrogen, and oxygen. The diatomaceous earth is readily available and may be used in a slurry |
| 7365217 |
Oxidation process |
April 29, 2008 |
| A process is disclosed for reacting an olefin, hydrogen, and oxygen in a reactor in the presence of an epoxidation catalyst comprising a transition metal zeolite and a noble metal to produce a product stream comprising an epoxide and an alkane. The alkane is separated and oxidized to |
| 7314545 |
Desulfurization process |
January 1, 2008 |
| This invention is a method of purifying fuels containing organosulfur impurities. The fuel is oxidized with an organic hydroperoxide in the presence of an oxidation catalyst to form a sulfone product, followed by extraction of the sulfone product by solid-liquid or liquid-liquid extr |
| 7271117 |
Epoxidation catalyst |
September 18, 2007 |
| Noble metal-containing titanium or vanadium zeolite catalysts are prepared by adding a noble metal source to a titanium or vanadium zeolite that contains templating agent used in the preparation of the zeolite, and then removing the templating agent to form the noble metal-containing |
| 7256149 |
Catalyst regeneration process |
August 14, 2007 |
| Used noble metal-containing titanium zeolite catalysts, that have been employed in the liquid-phase epoxidation of olefins with hydrogen and oxygen in the presence of a buffer, are regenerated by heating the used catalyst at a temperature of at least 250.degree. C. in the presence of a |
| 7232783 |
Propylene oxide catalyst and use |
June 19, 2007 |
| A process is provided for the production of a noble metal on TS-1 catalyst useful for the production of propylene oxide wherein TS-1 from hydrothermal crystallization has noble metal dispersed thereon, the resulting material is spray dried and template used in the crystallization is |
| 7057056 |
Epoxidation catalyst |
June 6, 2006 |
| Titanium or vanadium zeolites are pretreated by contacting with an amino polyacid compound, such as ethylenediaminetetraacetic acid or a salt thereof, prior to use in olefin epoxidation with hydrogen peroxide. |
| 7030255 |
Oxidation process with in-situ H202 generation and polymer-encapsulated catalysts therefor |
April 18, 2006 |
| Catalysts useful for oxidation reactions are disclosed. The catalysts comprise a titanium zeolite, a transition metal, and a polymer, wherein at least one of the titanium zeolite or transition metal is encapsulated within a thin layer of the polymer. The catalysts are easy to prepare and |
| 6958405 |
Polymer-encapsulated titanium zeolites for oxidation reactions |
October 25, 2005 |
| Catalysts useful for oxidation reactions are disclosed. The catalysts comprise a polymer-encapsulated titanium zeolite. The catalysts are easy to prepare and use, they are easy to recover and reuse, and they provide good conversions in a variety of important oxidation processes. The |
| 6867312 |
Propylene oxide process |
March 15, 2005 |
| Propylene oxide is formed in a two step reaction wherein in a first step oxygen and hydrogen are reacted in the absence of propylene to form hydrogen peroxide and in a second step propylene is reacted with the formed hydrogen peroxide to form propylene oxide, the same solid noble met |
| 6759541 |
Epoxidation process using a supported niobium oxide catalyst |
July 6, 2004 |
| The invention is a liquid-phase process for epoxidizing olefins with hydrogen peroxide in the presence of a non-zeolitic, supported niobium oxide catalyst comprising niobium oxide and a support. The process exhibits good productivity and selectivity for olefin epoxidation with hydrog |
| 6498259 |
Direct epoxidation process using a mixed catalyst system |
December 24, 2002 |
| The liquid-phase epoxidation reaction of an olefin with hydrogen and oxygen in the presence of a catalyst mixture containing a titanium zeolite and a supported catalyst surprisingly produces less ring-opened products such as glycols when performed in the presence of a buffer. This is par |
| 6468496 |
Process for producing hydrogen peroxide |
October 22, 2002 |
| A supported gold-containing catalyst is effective for producing hydrogen peroxide from the direct liquid-phase reaction of hydrogen and oxygen. |
| 6441204 |
Direct epoxidation process using a mixed catalyst system |
August 27, 2002 |
| The invention is a liquid-phase process for epoxidizing an olefin with hydrogen and oxygen in the presence of a catalyst mixture comprising a titanium zeolite and a supported catalyst comprising palladium on niobium-containing support. The process is highly selective and productive f |
| 6441203 |
Direct epoxidation process using a palladium on niobium-containing support |
August 27, 2002 |
| The invention is a liquid-phase process for epoxidizing an olefin with hydrogen and oxygen in the presence of a supported catalyst comprising palladium on niobium-containing support. The process exhibits good productivity and selectivity for olefin epoxidation with hydrogen, and oxyg |
| 6403815 |
Direct epoxidation process using a mixed catalyst system |
June 11, 2002 |
| The liquid-phase epoxidation reaction of an olefin with hydrogen and oxygen in the presence of a catalyst mixture comprising titanium zeolite and a supported catalyst surprisingly shows higher activity toward epoxide production when the supported palladium catalyst is pre-treated with |
| 6310224 |
Epoxidation catalyst and process |
October 30, 2001 |
| In a process for the production of an oxirane compound by reaction of olefins, oxygen and hydrogen using a noble metal on titanium or vanadium silicalite catalyst the improvement wherein the catalyst is doped with a substantially non-reduced metal dopand. |
| 6194591 |
Aqueous epoxidation process using modified titanium zeolite |
February 27, 2001 |
| An olefin epoxidation process is described. The process comprises epoxidizing an olefin with hydrogen peroxide in the presence of a modified titanium zeolite catalyst in water solvent. The titanium zeolite catalyst is modified with a platinum, palladium or copper compound. The modified |
| 6063942 |
Catalyst preparation and epoxidation process |
May 16, 2000 |
| An epoxidation catalyst is prepared by contacting a vanadium or titanium silicalite slurry with an ion exchangeable noble metal complex, and the catalyst is used without drying or calcining for olefin epoxidation by contact with 0.sub.2, H.sub.2 and olefin. |
| 6037484 |
Epoxidation process |
March 14, 2000 |
| The selectivity of an olefin epoxidation process catalyzed by a titanium-containing zeolite is improved by performing the epoxidation in the presence of a non-ionic tertiary amine or tertiary amine oxide additive. For example, when hydrogen peroxide is reacted with propylene in the p |
| 6008388 |
Epoxidation process |
December 28, 1999 |
| The selectivity of an olefin epoxidation catalyzed by a noble metal-modified titanium or vanadium zeolite is greatly enhanced by the addition of a nitrogen compound to the reaction mixture. The epoxidation utilizes hydrogen and oxygen in addition to the olefin. |
| 6005123 |
Epoxidation process |
December 21, 1999 |
| The selectivity of an olefin epoxidation catalized by a noble metal-modified titanium or vanadium zeolite is greatly enhanced by the addition of a phosphorus, sulfur, selenium or arsenic compound to the reaction mixture. The epoxidation utilizes hydrogen and oxygen in addition to the |
| 5939569 |
Epoxidation process |
August 17, 1999 |
| A process for converting an olefin such as propylene to the corresponding epoxide is described wherein the olefin, hydrogen and oxygen are contacted with a catalyst comprised of gold on a zirconium-containing support such as zirconia. |
| 5892066 |
Propylene oxide and derivatives process |
April 6, 1999 |
| Propylene is oxidized with molecular oxygen in the liquid phase to form products including propylene oxide, propylene glycol, propylene glycol esters, allyl alcohol, acrolein and acetal, the acrolein is hydrogenated to allyl alcohol, the acetol is hydrogenated to propylene glycol, the |
| 5760254 |
Production of oxirane compounds |
June 2, 1998 |
| Oxirane compounds are produced by molecular oxygen oxidation of an olefin in the presence of a nitrogen oxide catalyst. |
| 5670674 |
Production of oxirane compounds |
September 23, 1997 |
| Oxirane compounds are produced by molecular oxygen oxidation of an olefin in the presence of a platinum (II) dihalide catalyst. |
| 5401857 |
Process for making .gamma.-butyrolactones |
March 28, 1995 |
| A cyclocarbonylation process for making .gamma.-butyrolactones under mild temperature and pressure conditions is disclosed. In the process, an allylic alcohol reacts with carbon monoxide in the presence of a rhodium carbonyl catalyst and an amount of a pyridine promoter effective to |
| 5401856 |
Process for making pyrrolidones |
March 28, 1995 |
| A cyclocarbonylation process for making pyrrolidones under mild temperature and pressure conditions is disclosed. In the process, an allylic amine reacts with carbon monoxide in the presence of a rhodium carbonyl catalyst and an amount of a pyridine promoter effective to enhance the yiel |
| 5364909 |
Graft polymer compositions containing mono-amine functionalized polyoxyalkylene ethers |
November 15, 1994 |
| Graft polymers are prepared by reacting thermoplastic copolymers comprised of alkenyl aromatic monomers and carboxylic acid moieties such as .alpha.,.beta.-unsaturated dicarboxylic acid anhydrides with mono-amine functionalized polyoxyalkylene ethers. The graft polymers are useful for |
| 5360787 |
Dispersant compositions comprising sulfonated isobutylene maleic anhydride copolymer for subterr |
November 1, 1994 |
| A dispersant for drilling fluids, spacer fluids, cement slurries, completion fluids and mixtures of drilling fluids and cement slurries used for drilling and cementing subterranean wells. |
| 5340883 |
Organic liquid absorbent compositions based on phosphonic acid-containing polymers and di- or po |
August 23, 1994 |
| Compositions useful as absorbents for organic liquids are disclosed. A diamine or polyamine is reacted with a polymeric resin that contains phosphonic acid groups to produce the absorbent compositions of the invention. Because the polymeric resin component can be combined with the am |
| 5328958 |
Thermoplastic resins based on vinyl aromatic/vinyl phosphonic acid copolymers and amine-terminat |
July 12, 1994 |
| Thermoplastic resins of the invention are reaction products of vinyl aromatic/vinyl phosphonic acid copolymers and amine-terminated polymers. The flexible products, which contain ammonium linkages, are surprisingly transparent, and are useful for packaging, as fire-retardant polymers or |
| 5310808 |
Flame-retardant thermoplastic copolymers based on vinyl phosphonate derivatives grafted onto rub |
May 10, 1994 |
| Flame-retardant, thermoplastic copolymers and processes for making them are disclosed. The compositions are copolymers of a vinyl aromatic monomer, a vinyl phosphonic acid derivative, and optionally, an unsaturated organic diacid, ester, or anhydride that are grafted onto a rubber. Proce |
| 5292817 |
Flame-retardant thermoplastic copolymers based on vinyl phosphonate derivatives grafted onto rub |
March 8, 1994 |
| Flame-retardant, thermoplastic copolymers and processes for making them are disclosed. The compositions are copolymers of a vinyl aromatic monomer, a vinyl phosphonic acid derivative, and optionally, an unsaturated organic diacid, ester, or anhydride that are grafted onto a rubber. Proce |
| 5274050 |
Organic liquid absorbent compositions based on phosphonic acid-containing polymers and di- or po |
December 28, 1993 |
| Compositions useful as absorbents for organic liquids are disclosed. A diamine or polyamine is reacted with a polymeric resin that contains phosphonic acid groups to produce the absorbent compositions of the invention. Because the polymeric resin component can be combined with the am |
| 5237028 |
Organic liquid absorbent compositions based on phosphonic acid-containing polymers and di- or po |
August 17, 1993 |
| Compositions useful as absorbents for organic liquids are disclosed. A diamine or polyamine is reacted with a polymeric resin that contains phosphonic acid groups to produce the absorbent compositions of the invention. Because the polymeric resin component can be combined with the am |
| 5210163 |
Process for preparing alternating copolymers of olefinically unsaturated sulfonate salts and uns |
May 11, 1993 |
| Substantially alternating 1:1 copolymers of olefinically unsaturated sulfonate salts such as sodium methallylsulfonate and .alpha., .beta.-unsaturated aliphatic dicarboxylic acid anhydrides such as maleic anhydide are produced by free radical polymerization using a polar non-reactive |
| 5171830 |
Catalytic process for the preparation of polyalkylene carbonates |
December 15, 1992 |
| A method for producing polyalkylene carbonates is disclosed. The polymers are prepared by reacting a diol having at least four carbons separating the hydroxyl groups with a diester of carbonic acid in the presence of a catalyst selected from tertiary amines, alkylammonium salts, pyridini |
| 5116882 |
Process for making copolymers of vinyl aromatic monomers and vinyl phosphonic acid derivatives a |
May 26, 1992 |
| A process for making thermoplastic copolymer beads from vinyl aromatic monomers and vinyl phosphonic acid derivatives is disclosed. A process for making foamed articles from the beads is also disclosed. The foamed articles are useful for packaging and construction applications. |
| 5115060 |
Alternating copolymers of olefinically unsaturated sulfonate salts and unsaturated imides |
May 19, 1992 |
| Copolymers of olefinically unsaturated sulfonate salts such as sodium methallylsulfonate and .alpha.,62 -unsaturated dicarboxylic acid imide such as maleimide are produced by free radical polymerization. The copolymers and their derivatives are useful as water-soluble dispersants. |
| 5109033 |
Vinyl aromatic monomer/vinyl phosphonate copolymer compositions and foamed articles derived ther |
April 28, 1992 |
| Copolymer compositions based on vinyl aromatic monomers and derivatives of vinyl phosphonic acids are disclosed. The copolymer beads of the invention are advantageously used to make foamed articles useful for packaging and construction applications. |
| 5091543 |
Preparation of cyclic carbonates using alkylammonium and tertiary amine catalysts |
February 25, 1992 |
| A method of preparing five- and six-membered cyclic carbonates is disclosed. The process comprises reacting a 1,2- or 1,3-diol with an acyclic diester of carbonic acid in the presence of a catalyst selected from alkylammonium salts, tertiary amines, and ion-exchange resins containing |
| 5081268 |
Process for the preparation of oxetanes from 1,3-glycol monosulfates |
January 14, 1992 |
| A practical, selective process for preparing oxetanes is disclosed. A 1,3-glycol monosulfate salt is prepared by sulfation and neutralization of the corresponding 1,3-glycol. The neutral monosulfate salt is then reacted with a strong base, resulting in efficient ring closure to the oxeta |
