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| Number | Title | Issue Date |
| 6218582 | Method for the reduced formation of tertiary butyl alcohol in a finishing reactor in the manufacture of methyl tertiary butyl ether A method for the preparation of methyl tertiary butyl ether is provided wherein a mixture of methanol and substantially peroxides-free tertiary butyl alcohol are catalytically reacted to form a reaction product comprising unreacted methanol, unreacted ter... | 04/17/2001 |
| 6063966 | Isobutylene-assisted aqueous extraction of methanol from methyl tertiary butyl ether An impure methyl tertiary butyl ether product contaminated with isobutylene, methanol and water is purified by continuous counter-current contact with water and an isobutylene fraction in an extraction zone comprising a counter-current contact tower to pr... | 05/16/2000 |
| 5856588 | Two-stage etherification of tertiary butyl alcohol using second stage zeolite catalysts for the intermediate preparation of isobutylene Methyl tertiary butyl ether is prepared from tertiary butyl alcohol and methanol in a plural stage process by (a) reacting tertiary butyl alcohol with methanol in a primary MTBE reaction zone containing a cationic ion-exchange resin catalyst to form a pri... | 01/05/1999 |
| 5830324 | Controlled continuous purification of propylene oxide by extractive distillation In the continuous purification of a propylene oxide feedstock contaminated with water, methanol and acetone wherein an acetone buffer is established in the column, normal distillation conditions are maintained or restored during or after an upset by conti... | 11/03/1998 |
| 5744652 | Method for the manufacture of methyl tertiary butyl ether from tertiary butyl alcohol and methanol Methyl tertiary butyl ether is prepared from TBA contaminated with oxygen-containing impurities by decomposing the impurities to gaseous products, by charging the thus-treated tertiary butyl alcohol and methanol to an etherification reactor to form an eth... | 04/28/1998 |
| 5741952 | Catalytic decomposition of peroxides to purify a methyl tertiary butyl ether recycle stream An MTBE recycle stream (which consists mainly of TBA and methanol) contaminated with residual amounts of tertiary butyl hydroperoxide, ditertiary butyl peroxide and allyl tertiary butyl peroxide can be effectively catalytically treated under mild conversi... | 04/21/1998 |
| 5741951 | Conjoint manufacture of MTBE and diisobutylene Methyl tertiary butyl ether and diisobutylene are prepared by reacting methanol with tertiary butyl alcohol to provide an etherification reaction product containing methyl tertiary butyl ether, tertiary butyl alcohol, methanol, isobutylene, and water. A m... | 04/21/1998 |
| 5741953 | Use of reactive distillation in the manufacture of methyl tertiary butyl ether An aqueous methanol feed stream contaminated with tertiary butyl alcohol is charged to a reactive distillation column having a reaction distillation section in the upper portion thereof containing an acid cation exchange resin and separated therein into a... | 04/21/1998 |
| 5736112 | Aqueous oxidation of organic molybdenum compounds Molybdenum oxides are recovered from an organic solvent solution of organic molybdenum compounds by adding the organic solvent solution to water and reacting the organic molybdenum compounds therein with oxygen under pressure to convert the organic compon... | 04/07/1998 |
| 5723698 | Catalytic decomposition of formate impurities in tertiary butyl alcohol and methyl tertiary butyl ether streams Disclosed is a method for decomposing formate esters, free acids and peroxides in a tertiary butyl alcohol stream to produce noncondensible gas products which comprises reacting said tertiary butyl alcohol stream or a methyl tertiary butyl alcohol stream ... | 03/03/1998 |
| 5705711 | Manufacture of methyl tertiary butyl ether in reactive distillation column Tertiary butyl alcohol and methanol are reacted in a primary reactor in the presence of an acid cation exchange resin to provide a primary reaction product comprising methyl tertiary butyl ether, unreacted tertiary butyl alcohol, unreacted methanol, isobu... | 01/06/1998 |
