| 摘要 |
NOVEL SOLVENT COMPOSITION FOR SELECTIVE REMOVAL OF COS FROM A GAS STREAM CONTAINING SAME, SAID COMPOSITION COMPRISING A) AT LEAST ONE POLYALKYLENE GLYCOL ALKYL ETHER OF THE FORMULA R1O-(ALK-O)N-R2 (I) OR 1,3-DIMETHYL-3,4,5,6-TETRAHYDRO-2(1H)-PYRIMIDINONE OR A MIXTURE OF N-FORMYLMORPHOLINE AND N-ACETYLMORPHOLINE WHEREIN R1 IS AN ALKYL GROUP HAVING FROM 1 TO 6 CARBON ATOMS; R2 IS HYDROGEN OR AN ALKYL GROUP HAVING FROM 1 TO 4 CARBON ATOMS; A1K IS AN ALKYLENE GROUP, BRANCHED OR UNBRANCHED, HAVING FROM 2 TO 4 CARBON ATOMS, AND N IS FROM 1 TO 10; AND B) AT LEAST ONE ALKANOLAMINE COMPOUND OF THE FORMULA R3NHR4OR6 (II) OR AT LEAST ONE PIPERAZINE COMPOUND OF FORMULA WHEREIN R3 IS HYDROGEN, AN ALKYL GROUP HAVING FROM 1 TO 6 CARBON ATOMS, OR THER4OH GROUP; R4 IS A BRANCHED OR UNBRANCHED ALKYLENE GROUP HAVING FROM 1 TO 6 CARBON ATOMS; R5, INDEPENDENTLY IN EACH OCCURRENCE, IS HYDROGEN OR AN HYDROXYALKYL GROUP HAVING FROM 1 TO 4 CARBON ATOMS; AND R6 IS HYDROGEN, AN ALKYL GROUP HAVING FROM 1 TO 6 CARBON ATOMS OR AN HYDROXYALKYL GROUP HAVING FROM 1 TO 4 CARBON ATOMS.
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