Method for producing acetylene alcohol compounds using continuous process
AssigneeSK Corporation
InventorsSi-Joon Lee, Chang-Kuk Kim, Young-Gyun Jung, Young-Sun Kang, Taik-Keun Kim
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Abstract
There is disclosed a method for producing acetylene alcohol compounds in a continuous process, which are produced via ethynylation in which ketones containing a group --CH.sub.2 COCH.sub.2 --, are condensed with acetylenes at a temperature of about 20 to 50.degree. C. under a pressure of about 10 to 30 kg/cm.sup.2 in the presence of a quaternary ammonium hydroxide anion exchange resin having strong basicity in an aprotic solvent by feeding a reactant mixture at an LHSV range of 0.1 to 5.0 and the reactant mixture comprises the acetylene, the ketone and the solvent at a molar ratio of 1.0:0.2-3.0:1.0-4.0.
Claims11
A method for producing an acetylene alcohol compound in a continuous process, comprising the steps of:
- (i) saturating an acetylene gas in an aprotic solvent selected from the group consisting of dimethylformamide, dimethyl sulfoxide and N-methylpyrrolidone in a first reactor in the absence of liquid ammonia and alkali metal hydroxide;
- (ii) mixing the saturated acetylene solution with a ketone containing a --CH.sub.2 CHOCH.sub.2 -- to form a reactant mixture of said acetylene, ketone and solvent in a molar ratio of 1.0:0.2-3.0:1.0-4.0;
- (iii) feeding the reactant mixture into one of a second and third reactor, said second and third reactors containing a strongly basic quaternary ammonium hydroxide anion exchange resin, at a liquid hourly space velocity in the range of 0.1 to 5.0;
- and
- (iv) reacting the reactant mixture in the presence of said resin at a temperature of about 20 to 50.degree. C. under a pressure of about 10 to 30 kg/cm.sup.2 ;
- said second and third reactors being alternately operated to permit the regeneration of said resin in one reactor while said other reactor is being operated.
Dependencies are inferred from the claim text.