| Patent Number |
Title Of Patent |
Date Issued |
| H1128 |
Heat resistant thermoplastic copolymers |
January 5, 1993 |
| Thermoplastic copolymers having excellent tensile and heat resistance properties are obtained by copolymerization of a monovinyl aromatic monomer, an .alpha.,.beta.-unsaturated dicarboxylic acid anhydride, an .alpha., .beta.-unsaturated carboxylic acid, and a C.sub.1 -C.sub.4 alkyl e |
| 5935631 |
Reduced calorie fried snacks having a cooling sensation when placed in the mouth |
August 10, 1999 |
| Reduced calorie fried snacks are prepared by replacing some or all of the oil conventionally used in frying with a fat replacement composition containing a fatty acid-esterified propoxylated glycerin composition which exhibits a sharp melt before about 92.degree. F. Potato chips, corn ch |
| 5684086 |
Cured thermosets and glass-reinforced composites from unsaturated polyetherester resins |
November 4, 1997 |
| Polymer blends of unsaturated polyetherester resins and dicyclopentadiene polyester resins give single-phase, cured thermosets having high tensile and flexural strength. The thermosets exhibit a single glass-transition temperature within the range of about 70.degree. C. to about 150.degr |
| 5498583 |
Polyurethane foam-supported double metal cyanide catalysts for polyol synthesis |
March 12, 1996 |
| Polyurethane foam-supported double metal cyanide (DMC) catalysts are disclosed as useful catalysts for epoxide polymerization. The foam-supported catalysts are easy to prepare, and are more active and show reduced induction periods compared with conventional powdered DMC catalysts. T |
| 5094775 |
Zeolite modified water-blown polyurethane foams |
March 10, 1992 |
| Water-blown, polyurethane foams modified by incorporation of specific zeolites at levels of from about 0.5 to ten parts per hundred parts polyol exhibit superior combustibility with no halogen or phosphorus flame retardant additive in the foam. Conventional halogen/phosphorus flame r |
| 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 |
| 5091163 |
Partially protonated sodium-ZSM-5 method of making |
February 25, 1992 |
| The invention relates to a novel zeolite having protonated sites external to the pores and exchangeable cation sites within the pores, and to the preparation thereof. |
| 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 |
| 5081267 |
Epoxidation process |
January 14, 1992 |
| The present invention relates to the epoxidation of olefinic compounds by reaction with an organic hydroperoxide in the presence of a solid, heterogeneous catalyst comprised of molybdenum oxide finely dispersed in silica or of both molybdenum oxide and titanium oxide finely dispersed in |
| 5079306 |
Polymer compositions and absorbent fibers produced therefrom |
January 7, 1992 |
| Aqueous, uncured but curable, polymer compositions which are stable at room temperature and possess excellent shelf life in uncured form are disclosed. The uncured polymer compositions can be made into fibers using conventional fiber forming processes and cured to produce absorbent fiber |
| 5075346 |
Tertiary ethers as blowing agents for foam polymer systems |
December 24, 1991 |
| The use of tertiary ethers as blowing agent allows the preparation of lower density foams from many types of polymeric materials. |
| 5070141 |
Polyacrylate graft-polyol dispersants |
December 3, 1991 |
| Polyacrylate graft-polyols are found to be homogeneous liquids useful as dispersants in vinyl polymer polyols. The novel polyacrylate graft-polyols are made by polymerizing at least one acrylate monomer in a polyol where the resultant polyacrylate is soluble in the polyol used. The polyo |
| 5066742 |
Manufacture of C2-C8 olefin/maleic anhydride copolymers |
November 19, 1991 |
| A method for producing an aqueous C.sub.2 -C.sub.8 olefin/maleic anhydride copolymer suspension is disclosed. The aqueous copolymer suspension is particularly suitable for use in applications such as fiber spinning syrups in which a copolymer in dry powder form is not needed. |
| 5066685 |
Fibre-reinforced rigid polyurethane foam and polyol component therefor |
November 19, 1991 |
| Polyol compositions suitable for use in the production of fibre-reinforced rigid polyurethane foam comprises (a) at least one amino polyol obtainable by reacting an alkylene oxide with an initiator which has a functionality greater than 2, at least one aromatic ring and at least one amin |
| 5059670 |
Thermosettable compositions containing alkoxylated aromatic compounds |
October 22, 1991 |
| Rigid polyurethane-modified polyisocyanuate compositions having improved physical properties are obtained by curing thermosettable compositions containing alkoxylated aromatic compounds, organic polyisocyanates and cyclic alkylene carbonates using an isocyanate trimerization catalyst. Th |
| 5059641 |
Epoxy modified polyols as dispersants for high styrene, high solids content polymer polyols |
October 22, 1991 |
| Very low viscosity polymer polyols having high styrene/acrylonitrile ratios and good stability may be achieved by the use of epoxy modified polyols as dispersants. The epoxy modified polyols useful as dispersants may be made by one of three methods: (1) adding the epoxy resin internally |
| 5055496 |
Polymer product containing isobutylene oxide polyols |
October 8, 1991 |
| Novel polyether polyols are disclosed which contain an internal block of isobutylene oxide or a mixture of isobutylene oxide and a mono- or unsaturated alkylene oxide and an end-cap of a mono- or unsubstituted alkylene oxide to provide reactive primary or secondary hydroxyl end-group |
| 5049328 |
Purification, impregnation and foaming of polymer particles with carbon dioxide |
September 17, 1991 |
| A process for making high-purity foam moldings without the use of organic blowing agents involves the use of inorganic gases such as carbon dioxide, nitrogen, air and other pneumatogens.The process involves the simultaneous impregnation and purification of the polymers with or without fo |
| 5043522 |
Production of olefins from a mixture of Cu.sup.+ olefins and paraffins |
August 27, 1991 |
| The present invention relates to the conversion of saturated paraffin hydrocarbons having 4 or more carbon atoms to olefins having fewer carbon atoms. In particular, the invention provides for contact of a mixture of 40 to 95 wt % paraffin hydrocarbons having 4 or more carbon atoms and 5 |
| 5043481 |
Cyclohexane oxidation |
August 27, 1991 |
| The present invention relates to the oxidation of a cycloalkane to produce a product comprised of cycloalkylhydroperoxide with the removal of a vapor stream from the oxidation zone wherein oxidation products such as hydroperoxide, cycloalkanol and cycloalkanone are separated from the |
| 5041680 |
Production of hydrogen peroxide |
August 20, 1991 |
| Hydrogen peroxide and organic active oxygen-containing compounds in an organic stream, such as that from a methyl benzyl alcohol oxidate after hydrogen peroxide separation, are selectively decomposed by non-catalytic thermal treatment at 150.degree.-180.degree. C. for 20-60 minutes where |
| 5041469 |
Formation of discrete polyalkylene carbonate particles by solvent/non-solvent precipitation |
August 20, 1991 |
| Discrete, non-agglomerating particles of polyalkylene carbonate are produced by solvent/non-solvent precipitation using certain solvent/non-solvent systems. The free-flowing particles obtained are from 30 to 3000 microns in diameter and are suitable for use in a variety of applicatio |
| 5041465 |
Reducing lustrous carbon in the lost foam process |
August 20, 1991 |
| The evaporative casting of molten metals has been shown to produce casting having smooth surfaces with significantly less sign of carbon deposits thereon by using a polystyrene containing a high temperature peroxide, tert-butyl cumyl peroxide. |
| 5039508 |
Production of hydrogen peroxide |
August 13, 1991 |
| Hydrogen peroxide is produced by liquid phase molecular oxygen oxidation of methyl benzyl alcohol, the reaction being carried out such that the oxygen absorption rate is 90% or more of the maximum at the reaction conditions and the exit gas oxygen partial pressure is not greater than 3.0 |
| 5035275 |
Method of controlling the pyrolysis rate of a plastic foam |
July 30, 1991 |
| The thermal shrinkage and pyrolysis rate of plastic foam moldings are successfully controlled by coating the expandable plastic beads used in the preparation of the moldings with varying amounts of substantially water-insoluble inorganic siliceous materials. The plastic foam moldings |
| 5034449 |
Moldable polyblends of polyolefins and styrenic resins |
July 23, 1991 |
| A polyblend composition containing an olefin polymer, a rubber-modified styrenic resin, and a block copolymer compatibilizer is disclosed. In a preferred embodiment, a crystalline propylene polymer, a styrene/maleic anhydride random thermoplastic copolymer modified with a grafted sty |
| 5032671 |
Preparation of lactone polymers using double metal cyanide catalysts |
July 16, 1991 |
| Lactone monomers are polymerized using double metal cyanide compounds as catalysts to yield useful lactone polymers. Block or random copolymers of lactones and epoxides may also be prepared. |
| 5030663 |
Process for the preparation of fire-retardant expandable thermoplastic beads |
July 9, 1991 |
| Fire-retardant expandable vinyl aromatic polymer beads are prepared by an aqueous suspension method whereby a bromophenyl allyl ether fire-retardant agent and a volatile aliphatic hydrocarbon foaming agents are incorporated into particles of a thermoplastic such as polystyrene. The beads |
| 5026936 |
Enhanced production of propylene from higher hydrocarbons |
June 25, 1991 |
| The present invention provides a process for the preparation of propylene from C.sub.4 or higher feed by a combination of cracking and metathesis wherein higher hydrocarbon is cracked to form ethylene and propylene and at least a portion of the ethylene is metathesized to propylene. |
| 5026935 |
Enhanced production of ethylene from higher hydrocarbons |
June 25, 1991 |
| The present invention provides a process for the preparation of ethylene from C.sub.4 or higher feed by a combination of cracking and metathesis wherein higher hydrocarbon is cracked to form ethylene and propylene and at least a portion of the propylene is metathesized to ethylene. |
| 5026784 |
Polymer compositions and absorbent fibers produced therefrom |
June 25, 1991 |
| Aqueous, uncured but curable, polymer compositions which are stable at room temperature and possess excellent shelf life in uncured form are disclosed. The uncured polymer compositions can be made into fibers using conventional fiber forming processes and cured to produce absorbent fiber |
| 5021506 |
Polyol polyacrylate dispersants |
June 4, 1991 |
| A stable, low viscosity polymer polyol composition comprising a continuous phase, a disperse phase within the continuous phase, and a dispersant for enhancing the stability of the resultant polymer polyol is disclosed. In one embodiment, the dispersant is formed by polymerizing at least |
| 5017712 |
Production of hydrocarbon-soluble salts of molybdenum for epoxidation of olefins |
May 21, 1991 |
| Production of novel hydrocarbon-soluble salts, especially adapted for use as catalysts in the epoxidation of olefinic compounds with an organic hydroperoxide, by reaction of an ammonium molybdate with a carboxylic acid in the presence of an organic amine at specified elevated temperature |
| 5015410 |
Paint stripper compositions containing N-methyl-2-pyrrolidone, aliphatic hydrocarbons, and aroma |
May 14, 1991 |
| A paint stripper and coatings remover composition free of methylene chloride is disclosed which contains N-methyl pyrrolidone, an aliphatic hydrocarbon such as mineral spirits, and a miscibilizing solvent such as an aromatic hydrocarbon. The composition preferably also contains one or |
| 5011908 |
Polymer polyol compositions and their use in the preparation of polyurethane foams |
April 30, 1991 |
| Polymer polyol compositions are provided which are useful for the production of flexible polyurethane foams. The polymer polyol compositions are composed of (1) a high functionality polyol, (2) a subsidiary polyalkylene oxide high in polyoxyethylene content and (3) a stably dispersed |
| 5011621 |
Paint stripper compositions containing N-methyl-2-pyrrolidone and renewable resources |
April 30, 1991 |
| Methylene chloride-free coating remover compositions are disclosed that contain N-methyl-2-pyrrolidone and one or more plant or animal-derived oils. The compositions optionally contain a miscibilizing solvent, thickener, and surfactant. Effective, economical, low-toxicity, low-volati |
| 5010047 |
Recovery of double metal cyanide complex catalyst from a polymer |
April 23, 1991 |
| A process for recovering double metal cyanide complex catalyst from a polymer such as polypropylene glycol in a form suitable for use as a polymerization catalyst is described. The process comprises the steps of (a) combining the polymer with a non-polar solvent to precipitate the ca |
| 5006206 |
Propylene oxide purification |
April 9, 1991 |
| A method is provided for the separation by extractive distillation of hydrocarbon impurities from propylene oxide wherein t-butyl alcohol/water is used as extractive distillation solvent. |
| 5004479 |
Methanol as cosurfactant for microemulsions |
April 2, 1991 |
| Stable microemulsion fuel compositions are provided which comprise (a) a hydrocarbon fuel such as diesel fuel, jet fuel, gasoline, or fuel oil; (b) water; and (c) cosurfactant combination of methanol and a fatty acid partially neutralized by a nitrogenous base. The compositions of the |
| 5003111 |
Isobutylene oxide polyols |
March 26, 1991 |
| Novel polyether polyols are disclosed which contain an internal block of isobutylene oxide or a mixture of isobutylene oxide and a mono- or unsaturated alkylene oxide and an end-cap of a mono- or unsubstituted alkylene oxide to provide reactive primary or secondary hydroxyl end-group |
| 5001277 |
Polymerization of tetrahydrofuran with fuming sulphuric acid and a complex anion cocatalyst |
March 19, 1991 |
| Tetrahydrofuran has been polymerized and copolymerized to form polymers of 1000 to 10,000 molecular weight using fuming sulfuric acid with a cocatalyst selected from salts of Group VA metal halides and superacid salts. The cocatalyst salts may be, for example, NaPF.sub.6, NaSbF.sub.6, |
| 5000825 |
Monoepoxide purification |
March 19, 1991 |
| A method is provided for the separation by extractive distillation of oxygenated impurities from a monoepoxide while avoiding epoxide loss, wherein lower glycol is used as extractive solvent in amounts so as to provide only up to about 0.3 mol % solvent in the vapor in the extractive |
| 4997857 |
Stabilizers for polymer/polyols |
March 5, 1991 |
| A stabilizer for polymer/polyols characterized by four key features: (1) prepared from a starting polyol having a functionality greater than 4; (2) having at least 60% retained unsaturation; (3) having a viscosity greater than 2000 cSt; and (4) prepared where the starting polyol is cappe |
| 4996374 |
Hydrogenation of acetophenone |
February 26, 1991 |
| A process for the hydrogenation of ACP to MBA over a supported palladium catalyst wherein a solvent comprised of ethylbenzene and/or MBA is employed and a small amount of water effective to suppress catalyst deactivation is incorporated in the feed. A further improvement comprises ma |
| 4996359 |
Process for the preparation of aromatic bis dialkyl ureas |
February 26, 1991 |
| Aromatic bis (dialkyl) ureas such as the bis (dimethyl) urea of 2,4-toluenediamine are prepared by reacting an aromatic diamine with isocyanic acid (HNCO) to convert the amino groups of the diamine to urea groups (--NHCONH.sub.2) to give an aromatic bis urea which is then reacted wit |
| 4994625 |
Production of hydrogen peroxide |
February 19, 1991 |
| Hydrogen peroxide and organic active oxygen-containing compounds in an organic stream, such as that from a methyl benzyl alcohol oxidate after hydrogen peroxide separation, are selectively decomposed by contact with an alumina catalyst, the organic active oxygen materials selectively |
| 4994499 |
Method of adding flame retardant to vinyl aromatic polymers made in a one-step process |
February 19, 1991 |
| A method of introducing flame retardants into expandable vinyl aromatic polymer beads made in a one-step process is disclosed. Flame retardants with good solubility in blowing agents are introduced after monomer conversion is substantially complete, resulting in vinyl aromatic polymer |
| 4988830 |
Propylene oxide production |
January 29, 1991 |
| Present invention relates to the production of propylene oxide by reaction of propylene with a C.sub.4 or higher hydroperoxide wherein at least a portion of the propylene is derived from the hydroperoxide moiety. |
| 4983329 |
Preparation of esterified propoxylated glycerin from free fatty acids |
January 8, 1991 |
| A novel method is provided for the preparation of a esterified propoxylated glycerin having food grade quality by reacting at temperatures of from about 100.degree. C. to about 250.degree. C. a propoxylated glycerin having from 2 to 100 oxypropylene oxide units per glycerin with excess |
| 4983218 |
Composition and method for hardening an aqueous alkali metal silicate solution |
January 8, 1991 |
| Aqueous solutions of alkali metal silicate are hardened using blends of alkylene carbonates and aliphatic alcohols such as alkylene diols, polyalkylene glycols, or hydroxyalkyl ethers. The aliphatic alcohol decreases the set time from that obtained using alkylene carbonate alone. The |
