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| Number | Title | Issue Date |
| 8251228 | Process and apparatus for adsorptive bubble separation Process and apparatus are described for adsorptive bubble separation of hydrophobic particles from liquid dispersions. The process may be used to treat the gas/liquid dispersion after it has been introduced from two or more ducts near the perimeter or from a central... | 08/28/2012 |
| 5959162 | Process for the preparation of 2-alkene-1,4-diols and 3-alkene-1,2-diols from γ,δ-epoxyalkenes This invention pertains, firstly, to the use of mixtures of hydriodic acid and organic solvent soluble iodide salts as catalysts for the hydration of γ,δ-epoxyalkenes to form a mixture of the corresponding 2-alkene-1,4-diol and 3-alkene-1,2-diol isomers... | 09/28/1999 |
| 5652328 | Polyether polymers derived from 3,4-epoxy-1-butene and hydroxyl initiator Disclosed are novel polyether compounds obtained by the reaction or polymerization of 3,4-epoxy-1-butene in the presence of an onium iodide compound such as an ammonium or phosphonium iodide, an organotin compound such as a trihydrocarbyltin iodide, and a... | 07/29/1997 |
| 5623086 | Process for the production of 1,2-bis (acyloxylates) A process for the preparation of 1,2-bis(acyloxyates) comprises acylation of epoxides with carboxylic anhydrides in the presence of a catalytic composition containing a tertiary amine and a carboxylic acid. Preferably, the carboxylic acid is a conjugate a... | 04/22/1997 |
| 5608117 | Process for producing saturated polyether glycols and alcohols derived from 3, 4-epoxy-1-butene Disclosed are novel saturated polyether compounds comprised of n units of residue (1) and m units of residue (2), wherein (i) residues (1) and (2) have the structures: ##STR1## (ii) the total value of n+m is 2 to 70 and m/(n+m) is 0.05 to 0.98; (ii) ... | 03/04/1997 |
| 5608034 | Polyether polymers derived from 3,4-epoxy-1-butene Polyether polymers obtained by the reaction or polymerization of 3,4-epoxy-1-butene in the presence of an onium iodide compound such as an ammonium or phosphonium iodide, an organotin compound such as a trihydrocarbyltin iodide, and a nucleophilic hydroxy... | 03/04/1997 |
| 5536882 | Preparation of polyether glycols and alcohols by the polymerization 3,4-epoxy-1-butene Disclosed are novel polyether compounds obtained by the reaction or polymerization of 3,4-epoxy-1-butene in the presence of an acidic catalyst and a nucleophilic initiator compound. The polyether compounds comprise n units of residue (1) and m units of re... | 07/16/1996 |
| 5466759 | Polyether glycols and alcohols derived from 3,4-epoxy-1-butene Disclosed are novel saturated polyether compounds comprised of n units of residue (1) and m units of residue (2), wherein (i) residues (1) and (2) have the structures: ##STR1## (ii) the total value of n+m is 2 to 70 and m/(n+m) is 0.05 to 0.98; (ii) ... | 11/14/1995 |
| 5434314 | Polyether glycols and alcohols derived from 3,4-epoxy-1-butene Disclosed are novel polyether compounds obtained by the reaction or polymerization of 3,4-epoxy-1-butene in the presence of an acidic catalyst and a nucleophilic initiator compound. The polyether compounds comprise n units of residue (1) and m units of re... | 07/18/1995 |
| 5406007 | Process for the production of unsaturated alcohols Disclosed is a process for the conversion of conjugated epoxyalkenes to unsaturated alcohols wherein a conjugated epoxyalkene is catalytically hydrogenated in the presence of a sulfur-modified or sulfided nickel catalyst whereby the epoxide ring is hydrog... | 04/11/1995 |
| 5315019 | Continuous process for the manufacture of 2,5-dihydrofurans from γ, δ-epoxybutenes Disclosed is a continuous process for the manufacture of 2,5-dihydrofurans by the isomerization of γ,δ-epoxyalkenes in the liquid phase in the presence of a catalyst system comprising an onium iodide compound and a Lewis acid and a process solvent compr... | 05/24/1994 |
| 5264595 | Process for the preparation of 3,4-dihalo-1,2-epoxybutanes from 3,4-epoxy-1-butene Disclosed is a process for the preparation of 3,4-dichloro and 3,4-dibromo-1,2-epoxybutane by the reaction of 3,4-epoxy-1-butene with chlorine or bromine in the presence of a catalytic amount of a tertiary amine or a hydrohalide of a primary, secondary or... | 11/23/1993 |
| 5254701 | Process for the production of mixtures of 2-hydroxytetrahydrofuran and 4-hydroxybutanal Disclosed is a process for the production of an equilibrium mixture of 2-hydroxytetrahydrofuran and 4-hydroxybutanal by a two-step process comprising (1) heating 2,5-dihydrofuran in the presence of a catalyst system comprising a phosphine, ruthenium or rh... | 10/19/1993 |
| 5238889 | Process for the separation of oligomeric materials from a catalyst mixture Disclosed is a process for the recovery of catalyst values from mixtures of catalyst compounds and oligomeric materials. The process provides for the separation of (i) an onium iodide compound, (ii) an organotin iodide compound, or (iii) a mixture thereof... | 08/24/1993 |
| 5103028 | Process for the preparation of 3,4-dihalo-1,2-epoxybutanes Disclosed is a process for the preparation of 3,4-dichloro- and 3,4-dibromo-1,2-epoxybutane by the reaction of 3,4-epoxy-1-butane with chlorine or bromine in the presence of a quaternary ammonium or phosphonium halide compound. The reaction preferably is ... | 04/07/1992 |
| 5077418 | Process for the selective hydrogenation γ,δ-epoxyalkenes to epoxyalkanes Disclosed is a novel process for the preparation of epoxyalkanes and epoxycycloalkanes which comprises hydrogenating γ,δ-epoxyalkenes or γ,δ-epoxycycloalkenes in the presence of a rhodium catalyst. The process is especially useful for the prepara... | 12/31/1991 |
| 4962210 | Process for the preparation of high-purity tetrahydrofuran Disclosed is a process for the preparation of high-purity tetrahydrofuran from a mixture of 2,5-dihydrofuran and 3,4-epoxy-1-butene and/or crotonaldehyde wherein the mixture is hydrogenated in the presence of a nickel or platinum catalyst to obtain a prod... | 10/09/1990 |
| 4454340 | Preparation of aryl 1-hydroxyaryl-2-carboxylates Disclosed is a process for the preparation of aryl 1-hydroxyaryl-2-carboxylates by the reaction of certain phenolic compounds with an aryl chloroformate in the presence of aluminum chloride and an organic solvent.... | 06/12/1984 |
