TH29926B - Methacrylate Ester Preparation Process - Google Patents

Abstract

DC60 (12/09/49) Methacrylate ester preparation process, where (a) propine is swept from the reagent stream. Dissolved in a distillation column containing dissolved propine. The gaseous propine stream is later condensed into liquid; and (b) the condensed propine is exposed to carbon monoxide and alcohol containing a catalyst for carboxylation. The characteristic is that the propine that is swept into the distillation column is connected to the internal condenser. to partially condense for re-circulating distillation The process of preparing the methacrylate ester, where (a) pyrepine is swept from the solvent stream in a distillation column containing dissolved propine, sap propine, at Gaseous is subsequently condensed to a liquid, and (b) the condensed propine is exposed to carbon monoxide and catalyst-containing alcohols for the catalytic reaction. Bonila floors included. The propine nature swept into the distillation column is connected to the internal condenser to provide partial condensation for re-circulation distillation.

Claims (8)

1. The methacrylate ester preparation process where (a) propine is swept into the solvent distillation column containing dissolved propine. So that the gas propine current is subsequently condensed and (b) the condensed propine is exposed to carbon monoxide and alcohol, with catalyst for the reaction Carbonation is also present. Which is characterized by that the propine that is swept into the distillation column is connected to the internal condenser. To partially form condensation to return to reflux 2. The process referred to in claim 1, where the gaseous propine is subsequently condensed in all the above condensers. It is collected in a collection tank, which is then mixed with alcohol. 3. The process referred to in claim 1, where the propine as a gas condensed in all subsequent above condensation by contact with cooled alcohol or its mixtures. Cooled alcohol and probine 4. Process of production referred to as in any of Clause 1 to 3. Where the propine is wiped out of the solvent in the distilled column. This is done at pressures in the range 0.01 to 5.0 barg, the lower temperature ranges from 120 to 230 ํ and the upper temperature ranges from -25 to 35 ํ. 5. The process referred to in any of the Clause 1 to 4 Clause 4. Where the propine is wiped out of the solvent in the distillation column, acting at pressures in the range 0.1 to 3.0 barg, the temperature below 130 to 210 ํ and the above temperature range - 15 to +25 ํ 6.The process referred to in any of Clause 1 to 5 Where the pines are swept away from the solvent in a distilled column with 6 to 20 theoretical baffles. 7.The process referred to in any of Clause 1 to 6 Where the internal condenser is positioned 2 to 3 of the condensed vapor stream. 8. Process referred to in claim 6, where the internal condenser conducts recirculating distillation at 1 to 20 m3 / h. And consumes power at a rate of 90 to 2000 kW