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| Number | Title | Issue Date |
| 4329512 | Process for preparing acetaldehyde Acetaldehyde is produced by reacting acetic anhydride with hydrogen in the presence of a Group VIII noble metal catalyst wherein the reaction is carried out in the liquid phase but the reaction is maintained under boiling conditions and the entire reactio... | 05/11/1982 |
| 4328362 | Conversion of acetic anhydride to ethylidene diacetate Acetic anhydride is reacted with hydrogen to produce ethylidene diacetate by carrying out the reaction in the presence of a catalyst comprising a molybdenum-nickel or a tungsten-nickel co-catalyst component and in the presence of an iodide and a promoter ... | 05/04/1982 |
| 4323697 | Process for preparing ethylidene diacetate Ethylidene diacetate is prepared by treating methyl acetate and/or dimethyl ether with carbon monoxide and hydrogen by the use of a molybdenum-nickel or tungsten-nickel co-catalyst, in the presence of an iodide and in the presence of a promoter comprising... | 04/06/1982 |
| 4321414 | Catalytic hydrogenation of glycolaldehyde to produce ethylene glycol A process is provided for catalytic hydrogenation of glycolaldehyde to form ethylene glycol in liquid phase employing a homogeneous ruthenium catalyst and a basic promoter. Ethylene glycol is produced in excellent yields and selectivities, and the process... | 03/23/1982 |
| 4317946 | Process for producing ethylene glycol via catalytic hydrogenation of glycolaldehyde A process is provided for catalytic hydrogenation of glycolaldehyde to form ethylene glycol in liquid phase employing a homogeneous ruthenium carboxylate complex catalyst system. Ethylene glycol is produced in excellent yields and selectivities and the pr... | 03/02/1982 |
| 4316045 | Catalytic process for the production of aryl carboxylates A process for the catalytic preparation of aryl carboxylates is provided in which an arylmetallo carboxylate is contacted in liquid medium with an organic peracid in the presence of a catalytic amount of an aryl iodide, to form the desired aryl carboxylat... | 02/16/1982 |
| 4316046 | Process for the preparation of aryl carboxylates A process for the preparation of aryl carboxylates is provided in which an arylmetallo carboxylate is contacted with an aryliodoso carboxylate in liquid medium to form the desired aryl carboxylate. Promoters can be employed to increase the rate of reactio... | 02/16/1982 |
| 4302611 | Preparation of acetaldehyde Acetaldehyde is prepared by reacting methyl acetate and/or dimethyl ether with carbon monoxide and hydrogen in the presence of a palladium catalyst and an iodine moiety in a reaction zone wherein the reaction mixture is in a continuous boiling state.... | 11/24/1981 |
| 4290959 | Preparation of propylene oxide An improved process for preparing propylene oxide is provided in which propylene is oxidized by means of a thallic salt in the presence of aqueous media containing an alkanoic acid having at least seven carbon atoms and optionally in the presence of an or... | 09/22/1981 |
| 4284585 | Process for the preparation of acetic anhydride Acetic anhydride is prepared from methyl acetate and/or dimethyl ether in carbonylation processes comprising the use of a halide, carbon monoxide and a Group VIII noble metal in the presence of promoters comprising metallic zirconium and an organo-phospho... | 08/18/1981 |
| 4284586 | Process for the preparation of acetic anhydride Acetic anhydride is prepared from methyl acetate and/or dimethyl ether in carbonylation processes comprising the use of a halide, carbon monoxide and a Group VIII noble metal in the presence of promoters comprising metallic hafnium and an organo-phosphoru... | 08/18/1981 |
| 4273622 | Method of treating alpha-methylbenzylalcohol dehydration products Residual products obtained in the catalytic dehydration of alpha-methylbenzyl alcohol are treated to recover monomeric styrene values by a process which comprises fractionally distilling the residual products in two stages under different temperature and ... | 06/16/1981 |
| 4271090 | Novel 2-bromoethyl tellurium bromides The novel bis (2-bromoethyl) tellurium dibromide and 2-bromoethyl tellurium tribromide are prepared by reacting ethylene with a source of tellurium tetrabromide in an inert, non-basic organic solvent under certain temperature conditions and in the substan... | 06/02/1981 |
| 4271040 | Catalyst and process for producing methacrylic acid A catalyst composition useful for the oxidation of unsaturated aldehydes, particularly the oxidation of methacrolein to produce methacrylic acid, comprises the combination of oxides of molybdenum, copper, phosphorus, antimony, and cesium and/or calcium an... | 06/02/1981 |
| 4266070 | Catalytic process for the manufacture of urethanes A process for the production of urethanes is provided in which an organic primary or secondary amine is contacted, in the substantial absence of reactive oxygen, with a source of carbon monoxide and an organic compound containing at least one hydroxyl gro... | 05/05/1981 |
| 4263443 | Conversion of aldehydes Hydrocarbons and esters and/or acids are produced by heating aldehydes in the presence of an alcohol or an alcohol equivalent and in the presence of an iodine or bromine moiety and a rhodium or iridium catalyst.... | 04/21/1981 |
| 4263448 | Process for oxidation of hydrocarbons An oxidizable hydrocarbon is oxidized in a reaction zone at elevated temperature in the presence of a liquid reaction medium by introducing the hydrocarbon and a feed stream containing molecular oxygen to the reaction zone under conditions sufficient to o... | 04/21/1981 |
| 4262143 | Preparation of hydroperoxides In the preparation of ethylbenzene hydroperoxide by reacting ethylbenzene with molecular oxygen, selectivity and reaction rate are improved by incorporating in the oxidation mixture a small amount of a hydroxide or salt of sodium or potassium.... | 04/14/1981 |
| 4261860 | Catalyst for producing methacrylic acid A catalyst composition useful for the oxidation of unsaturated aldehydes, particularly the oxidation of methacrolein to produce methacrylic acid, comprises the combination of oxides of molybdenum, copper, phosphorus, antimony, and calcium in predetermined... | 04/14/1981 |
| 4261859 | Catalyst for producing methacrylic acid A catalyst composition useful for the oxidation of unsaturated aldehydes, particularly the oxidation of methacrolein to produce methacrylic acid, comprises the combination of oxides of molybdenum, copper, phosphorus, antimony, calcium, tungsten and option... | 04/14/1981 |
| 4261858 | Catalyst for producing methacrylic acid A catalyst composition useful for the oxidation of unsaturated aldehydes, particularly the oxidation of methacrolein to produce methacrylic acid, comprises the combination of oxides of molybdenum, copper, phosphorus, antimony, calcium and rhenium in prede... | 04/14/1981 |
| 4260781 | Process for the manufacture of carbamates A process for the production of carbamates is provided in which an organic primary or secondary amine is contacted, in the substantial absence of reactive oxygen, with a source of carbon monoxide, an organic compound containing at least one hydroxyl group... | 04/07/1981 |
| 4260821 | Minimizing polymerization during recovery of methacrylic acid The presence of solid polymer in distillation columns and their associated reboilers used for the recovery of methacrylic and acetic acids produced by the oxidation of methacrolein may be minimized by the use of inhibitors and introduction of molecular ox... | 04/07/1981 |
| 4258201 | Process for the manufacture of carbamates A process for the production of carbamates is provided in which an organic primary or secondary amine is contacted, in the substantial absence of reactive oxygen, with a source of carbon monoxide, an organic compound containing at least one hydroxyl group... | 03/24/1981 |
| 4252741 | Carbonylation with Group VIII noble metal catalysts In the carbonylation of alkyl esters in the presence of a Group VIII noble metal catalyst to produce a reaction mixture comprising volatile components and the non-volatile Group VIII noble metal catalyst, and the volatile components are separated from the... | 02/24/1981 |
| 4252683 | Catalyst for producing methacrylic acid A catalyst composition useful for the oxidation of unsaturated aldehydes, particularly the oxidation of methacrolein to produce methacrylic acid, comprises the combination of oxides of molybdenum, copper, phosphorus, antimony, calcium and rhenium in prede... | 02/24/1981 |
| 4252682 | Catalyst for producing methacrylic acid A catalyst composition useful for the oxidation of unsaturated aldehydes, particularly the oxidation of methacrolein to produce methacrylic acid, comprises the combination of oxides of molybdenum, copper, phosphorus, antimony, and calcium in predetermined... | 02/24/1981 |
| 4252681 | Catalyst for producing methacrylic acid A catalyst composition useful for the oxidation of unsaturated aldehydes, particularly the oxidation of methacrolein to produce methacrylic acid, comprises the combination of oxides of molybdenum, copper, phosphorus, antimony, calcium, tungsten and option... | 02/24/1981 |
| 4252748 | Recovery of acetone produced by carbonylation Acetone produced as a by-product in the reaction of methyl acetate with carbon monoxide and hydrogen in the presence of a Group VIII noble metal catalyst and methyl iodide is recovered from the reaction mixture by supplying acetone to provide an acetone t... | 02/24/1981 |
| 4251458 | Process for preparing carboxylic acid anhydrides A carboxylic acid anhydride, such as acetic anhydride, is prepared from a carboxylate ester or a hydrocarbyl ether in carbonylation processes comprising the use of a halide, carbon monoxide and a Group VIII noble metal in the presence of promoters compris... | 02/17/1981 |
| 4246195 | Purification of carbonylation products Carbonylation products of methyl acetate such as acetic anhydride are purified with respect to iodine contaminants by treatment with cesium acetate, potassium acetate or sodium acetate.... | 01/20/1981 |
| 4245114 | Glycol ester preparation In the preparation of glycol esters by the liquid phase reaction of an olefin, molecular oxygen, and a carboxylic acid in the presence of a catalyst system comprising a variable valent cation in association with bromine, chlorine, a bromine-containing com... | 01/13/1981 |
| 4244878 | Preparation of maleic anhydride A catalyst for the oxidation of butane to produce maleic anhydride comprising a substrate containing phosphorus and vanadium, and optionally also containing an activator, is characterized by the presence of at least one post-deposited promoter.... | 01/13/1981 |
| 4242520 | Promoted method for producing carbamates A process for the production of carbamates is provided which comprises contacting an organic primary or secondary amine with a source of carbon monoxide, an organic compound containing at least one hydroxyl group and a source of sulfur, selenium or tellur... | 12/30/1980 |
| 4240930 | Catalyst and process for producing methacrylic acid A catalyst composition useful for the oxidation of unsaturated aldehydes, particularly the oxidation of methacrolein to produce methacrylic acid, comprises the combination of oxides of molybdenum, copper, phosphorus, antimony, and cesium in predetermined ... | 12/23/1980 |
| 4241219 | Treatment of carbonylation effluent In the carbonylation of esters and/or ethers the reaction mixture is separated into fractions to recover components therefrom, gases are withdrawn from the system and halogen values are recovered from said gases by contact with a component recovered from ... | 12/23/1980 |
| 4238551 | Composition for inhibiting corrosion of titanium A process is provided for inhibiting the rate of corrosion of titanium metal surfaces from attack by strong acid media in which at least a portion of the titanium metal surface is coated with rhodium metal to provide a treated metal surface which is subst... | 12/09/1980 |
| 4234519 | Recovery of methacrolein In the catalytic oxidation of isobutylene and/or tertiary butyl alcohol to methacrolein, the product methacrolein is recovered as an aqueous solution, which thereafter is stripped of methacrolein by contacting the solution with recycle gases from the subs... | 11/18/1980 |
| 4234718 | Process for preparing cellulose acetate Cellulose acetate is produced from methanol, carbon monoxide and cellulose in an integrated series of steps wherein acetic anhydride produced in a first step by the carbonylation of methyl acetate is used to acetylate cellulose to produce cellulose acetat... | 11/18/1980 |
| 4234719 | Preparation of cellulose acetate Cellulose acetate is produced from methanol, carbon monoxide and cellulose in an integrated series of steps wherein acetic anhydride produced in a first step by the carbonylation of methyl acetate is used to acetylate cellulose to produce cellulose acetat... | 11/18/1980 |
