| Patent Number |
Title Of Patent |
Date Issued |
| RE34123 |
Method for enhancing thermal expandability of direct-injection foams |
November 10, 1992 |
| The process of enabling foam moldings to expand further than otherwise by impregnating the expanded sheet with inorganic gases such as carbon dioxide, nitrogen, air and other pneumatogens prior to reheating to effect expansion. |
| 7022885 |
Purification on methyl tertiary butyl ether |
April 4, 2006 |
| The present invention relates to purification of an MTBE process stream by contact in the liquid phase with a large pore zeolite such as 13X or Zeolite Y. |
| 6960671 |
Process for direct oxidation of propylene to propylene oxide and large particle size titanium si |
November 1, 2005 |
| Large crystals of titanium silicalite or intergrowths of intergrown smaller crystals, having a mean particle size greater than 2 .mu.m, have been found catalytically effective at commercially reasonable rates for the epoxidation of olefins in the presence of hydrogen peroxide. Crystals |
| 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 |
| 6936740 |
Dense phase oxidation of benzene |
August 30, 2005 |
| Phenol is formed by reaction of oxidant and benzene over a solid catalyst such as Pd on TS-1, the reaction being carried out in carbon dioxide solvent at conditions effective to provide a dense phase reaction mixture. |
| 6930143 |
Acrylic latex composition |
August 16, 2005 |
| An acrylic emulsion is disclosed. The emulsion comprises from about 30% to about 90% by weight of water, about 10% to about 70% by weight of an acrylic polymer, about 0.2% to about 10% by weight of a emulsifying agent, and up to 20% by weight of an organic solvent. The acrylic polymer |
| 6914167 |
Vent recovery system |
July 5, 2005 |
| A process for absorbing propylene from a gaseous propylene oxide process purge stream wherein propane liquid is used to absorb the propylene. |
| 6906200 |
Production of N-vinyl pyrrolidone |
June 14, 2005 |
| N-vinyl pyrrolidone is produced by dehydration of N-hydroxyethyl pyrrolidone in the presence of an amorphous mixed oxide catalyst such as an amorphous Ca/Zn oxide catalyst. |
| 6906136 |
UV-curable compositions |
June 14, 2005 |
| A UV-curable composition is disclosed. The composition comprises a crosslinking agent, a hydroxyalkyl acrylate or methacrylate, and an acrylic polyol. The crosslinking agent is selected from the group consisting of multifunctional isocyanates, melamines, and silanes. The acrylic poly |
| 6884898 |
Propylene oxide process |
April 26, 2005 |
| Propylene oxide is formed by reaction of propylene with molecular oxygen in a high boiling solvent containing slurried solid catalyst, the light components are flashed and the remaining liquid containing slurried catalyst is recycled. |
| 6872679 |
Heterogeneous catalyst regeneration |
March 29, 2005 |
| Used titanium-containing silicon oxide catalysts are regenerated by heating the used catalyst at a temperature of at least 400.degree. C. in the presence of a oxygen-containing gas stream, followed by impregnation with a titanium source, and then calcining the impregnated catalyst to for |
| 6870060 |
Product recovery from supercritical mixtures |
March 22, 2005 |
| Oxidation products are recovered from a mixture of the products in a dense phase or supercritical solvent by a liquid--liquid extraction at dense phase conditions. |
| 6869988 |
Solid supported comb-branched copolymers as an additive for gypsum compositions |
March 22, 2005 |
| A gypsum composition suitable for use in the manufacture of gypsum products is provided. The gypsum composition includes gypsum, water, and a solid dispersant comprising a supported acrylic/polyether comb-branched copolymer. A method of making a gypsum composition is also provided. 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 |
| 6815513 |
Process for preparing comb-branched polymers |
November 9, 2004 |
| A continuous process for making a comb-branched copolymer of an acrylic monomer and a polyether macromonomer is disclosed. The process is performed by continuously feeding a reaction zone with a monomer stream that contains an acrylic acid and a polyether macromonomer, and an initiat |
| 6803491 |
Preparation of lithium phosphate catalysts |
October 12, 2004 |
| A new method for preparing lithium phosphate catalysts is disclosed. The method comprises precipitating a lithium phosphate from a mixture comprising a first aqueous solution which contains lithium and sodium ions and a second aqueous solution which contains phosphate and borate ions. |
| 6780951 |
Multifunctional allyl carbamates and coatings therefrom |
August 24, 2004 |
| Allyl carbamates are disclosed. The allyl carbamates are prepared by reacting an isocyanate with an allylic alcohol or alkoxylated allylic alcohol. Suitable isocyanates are selected from hexamethylene diisocyanate (HDI), HDI biuret, dimer, HDI trimer, HDI allophanate, isophorone diis |
| 6770790 |
Purification of tertiary butyl alcohol |
August 3, 2004 |
| The invention is a method to purify tertiary butyl alcohol by contact with at least two solid adsorbents comprising aluminum oxide and a large pore zeolite such as zeolite X. The purification method successfully improves product quality and reduces the amount of impurities in the tertiar |
| 6762262 |
Preparation of acrylic polyols |
July 13, 2004 |
| A method for making a low-yellowing acrylic polyol is disclosed. The acrylic polyol has an APHA color increase less than 100% when it is mixed with 1.5 wt % of an UV light stabilizer. The method comprises free radically copolymerizing an allylic alcohol, an alkyl acrylate or methacry |
| 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 |
| 6755979 |
Peroxide impurities removal |
June 29, 2004 |
| A propylene oxide/styrene monomer aqueous purge stream is contacted with a catalyst at conditions effective to decompose peroxides contained therein, and oxygen formed by the decomposition swept from the decomposition with a nitrogen vapor stream from ethylbenzene oxidation. |
| 6710194 |
Epoxidation process |
March 23, 2004 |
| Propylene oxide is produced by liquid phase reaction of propylene oxygen and hydrogen in contact with a solid epoxidation catalyst at elevated temperature and pressure, the reaction conditions being regulated to provide a weight ratio of dissolved oxygen to dissolved hydrogen in the |
| 6710192 |
Dense phase epoxidation |
March 23, 2004 |
| Propylene oxide is formed by reaction of hydrogen, oxygen, and propylene over a solid catalyst such as Pd on TS-1, the reaction being carried out in carbon dioxide solvent at conditions effective to provide a dense phase reaction mixture. |
| 6696593 |
Preparation of UV-curable urethane compositions |
February 24, 2004 |
| A method of preparing UV-curable urethane compositions is disclosed. The method comprises two steps. First, isophorone diisocyanate (IPDI) reacts with a hydroxy-functional resin to form an NCO prepolymer. Second, the NCO prepolymer reacts with a hydroxy-functional ethylenic monomer to fo |
| 6696579 |
Alkylene carbonate purification |
February 24, 2004 |
| An alkylene carbonate such as propylene carbonate is contacted with an alumina or silica solid adsorbent having a surface area of 50-400 m.sup.2 /g such as basic alumina to remove impurities therefrom and improve color and color stability. |
| 6696521 |
High performance ortho UPR |
February 24, 2004 |
| A high performance UPR (unsaturated polyester resin) is disclosed. The UPR comprises recurring units of phthalic anhydride, 2-methyl-1,3-propanediol, and maleic anhydride. It has a fumarate/maleate ratio 85/15 or greater. It has a bi- or multi-modal molecular weight distribution. A high |
| 6664360 |
Preparation of water-reducing copolymers for concrete |
December 16, 2003 |
| Alkoxylated acrylate and methacrylate macromonomers are disclosed that are useful in the preparation of water-reducing additives for concrete, ultraviolet light-curable adhesives, and water-dispersed polyurethanes. The macromonomers are suitably prepared by alkoxylating a hydroxyalky |
| 6660800 |
Process for making crosslinked polyvinylpyrrolidone |
December 9, 2003 |
| A process for making crosslinked polyvinylpyrrolidone (PVP-P) is disclosed. Crosslinker generation, followed by polymerization of NVP, gives a polymer containing up to 4 wt. % of residual NVP. An aqueous mixture of the polymer is then heated in the presence of a protic acid at pH<4 to |
| 6586605 |
Purification of alkylene carbonate |
July 1, 2003 |
| The invention is a method to purify an alkylene carbonate such as propylene carbonate by contact with at least two solid adsorbents comprising carbon and an inorganic silicon or aluminum oxide. The purification method successfully improves color and color stability while also reducing th |
| 6583300 |
Epoxidation system with fixed bed reactors |
June 24, 2003 |
| A process for the production of an oxirane compound by reaction of an olefin with a hydroperoxide reactant in the presence of a solid epoxidation catalyst, wherein the olefin and hydroperoxide reactants are first reacted in it least two fixed bed reactors packed with fresh catalyst, |
| 6582510 |
Use of comb-branched copolymers as pigment dispersants |
June 24, 2003 |
| A pigment dispersion suitable for use in the manufacture of pigmented coating compositions is provided. The pigment dispersion comprises a) pigment, b) carrier, and c) an acrylic/polyether comb-branched copolymer dispersant wherein the polyether portion of the copolymer is free of any |
| 6563010 |
Adsorbent bed loading and regeneration |
May 13, 2003 |
| The process for removing impurities from a liquid by contact with a solid adsorbent using parallel contact adsorbent beds such that when one bed is contacting the liquid the parallel bed is being regenerated by contact with heated inert gas, wherein during changeover of the beds inert ga |
| 6562987 |
Method for highly exothermic epoxidation reactions |
May 13, 2003 |
| A process is provided for the production of oxirane compounds by reaction of an olefin such as propylene with an organic hydroperoxide using a solid contact catalyst, characterized in that a series of separate reaction zones are used, each packed with epoxidation catalyst, and the co |
| 6555623 |
Preparation of unsaturated polyesters |
April 29, 2003 |
| A process for making unsaturated polyesters from 2-methyl-1,3-propanediol (MPD) is disclosed. The process comprises reacting one equivalent of an aromatic diacid with about two equivalents of MPD to produce an ester diol and then reacting one equivalent of the ester diol with from about |
| 6555596 |
Multifunctional allyl carbamates and coatings therefrom |
April 29, 2003 |
| Allyl carbamates are disclosed. The allyl carbamates are prepared by reacting an isocyanate with an allylic alcohol or alkoxylated allylic alcohol. Suitable isocyanates are selected from hexamethylene diisocyanate (HDI), HDI biuret, dimer, HDI trimer, HDI allophanate, isophorone diis |
| 6555493 |
Solid epoxidation catalyst and preparation |
April 29, 2003 |
| The stability of a noble metal/titanium zeolite catalyst is improved by elevated temperature calcination with an oxygen containing gas; the catalyst is useful in epoxidation involving the reaction of olefin, oxygen and hydrogen. |
| 6541673 |
Process for oxyalkylating phenolic compounds |
April 1, 2003 |
| Phenolic polyether polyols are prepared by a two stage oxyalkylation process, a first stage performed at a high oxyalkylation temperature and a second stage at a lower oxyalkylation temperature. Despite the use of high temperature during oxyalkylation, polydispersity is substantially |
| 6527850 |
Use of comb-branched copolymers in gypsum compositions |
March 4, 2003 |
| A gypsum composition suitable for use in the manufacture of construction materials is provided. The gypsum composition includes gypsum, water, and a dispersant formulation comprising an acrylic/polyether comb-branched copolymer. A method of making a gypsum composition is also provided. T |
| 6512129 |
Epoxidation process |
January 28, 2003 |
| Insoluble resinous sodium materials are separated from a hydroperoxide/olefin epoxidation feed by contact with a fine screen or a bed of coalescing solids. |
| 6512066 |
Process for making crosslinked polyvinylpyrrolidone with low swell volume |
January 28, 2003 |
| A two-step, base-catalyzed process for making crosslinked polyvinylpyrrolidone (PVP-P) having a low swell volume is disclosed. A crosslinker is generated "in situ" in the first step by heating a basic aqueous mixture containing a relatively low concentration of N-vinylpyrrolidone und |
| 6511952 |
Use of 2-methyl-1, 3-propanediol and polycarboxylate builders in laundry detergents |
January 28, 2003 |
| A liquid laundry detergent formulation is described including a surfactant, a polycarboxylate builder and a 2-methyl-1,3-propanediol carrier solvent. A particularly preferred builder comprises a non-hydrophobically modified, acrylic/polyether comb-branched copolymer, wherein the polyethe |
| 6500311 |
Propylene oxide purification |
December 31, 2002 |
| A mixture of propylene oxide and methanol is separated by liquid/liquid extraction using water and a hydrocarbon such as n-octane as extractive solvents. |
| 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 |
| 6495188 |
Plastic and semisolid edible shortening products with reduced trans-fatty acid content |
December 17, 2002 |
| Esterified propoxylated glycerine ("EPG") may replace up to 100% of the partially hydrogenated vegetable oil content of an edible shortening product to produce a stable emulsion containing less trans-fatty acid content. A variety of shortenings may be produced, including those used f |
| 6492487 |
Process for making reactive unsaturated polyester resins from 2-methyl-1, 3-propanediol |
December 10, 2002 |
| A two-step process for making reactive unsaturated polyester resins is disclosed. First, an aromatic dicarboxylic acid derivative reacts with 2-methyl-1,3-propanediol (MPD) to produce an ester diol intermediate. The intermediate reacts with maleic anhydride and from about 15 to about 40 |
| 6478930 |
Impurities separation by distillation |
November 12, 2002 |
| A distillation procedure is provided for the separation of impurities from organic materials such as glycols and glycol ethers whereby a liquid stripping component is interfaced into a distillation column with or below the organic material introduction, heat being provided by a reboiler, |
| 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. |
| 6462117 |
Coatings and inks based on solvents having negligible photochemical reactivity |
October 8, 2002 |
| Coating and ink compositions based on organic solvents that have negligible photochemical reactivity and methods for making them are disclosed. The organic solvents have calculated oxidation rate constants of less than about 1.times.10.sup.10 cm.sup.3 /g.multidot.sec, and evaporation rat |
| 6455657 |
Preparation of vinyl aromatic-allylic alcohol copolymers |
September 24, 2002 |
| A process for preparing vinyl aromatic-allylic alcohol copolymers, such as styrene-allyl alcohol (SAA) copolymers, is disclosed. The process is conducted in the presence of a solvent, which enables the preparation of copolymers having both low hydroxyl functionalities and low molecular |
| 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 |
