Partial neutralization of sulfates of ethoxylated alcohols

Abstract

Abstract THIS INVENTION RELATES TO PARTIALLY NEUTRALIZED LIQUID SULFURIC ACID ESTERS OF ETHOXYLATED ALCOHOLS HAVING IMPROVED STABILITY PRODUCED BY THE PROCESS WHICH COMPRISES THE STEPS OF (A) ADDING IN GASEOUS FORM FROM ABOUT 10% TO ABOUT 55% OF THE THEORETICAL FOR NEUTRALIZATION OF AN ANHYDROUS NEUTRALIZING AGENT SELECTED FROM THE GROUP OF AMMONIA AND ALKYL AMINES HAVING 1-3 CARBON ATOMS AND BEING GASEOUS AT A TEMPERATURE OF 35%C. TO AN ANHYDROUS SULFURIC ACID ESTER OF AN ETHOXYLATED ALCOHOL SELECTED FROM THE GROUP CONSISTING OF (1) COMPOUNDS OF THE FORMULA R-CH2-O-(CH2-CH2-O)N-SO3H (2) COMPOUNDS OF THE FORMULA R''-O-(CH2-CH2-O)N-SO3H (3) COMPOUNDS OF THE FORMULA R1-CH(-R2)-O-(CH2-CH2-O)N-SO3H AND (4) MIXTURES OF THE ABOVE; WHEREIN R REPRESENTS A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKYL HAVING FROM 5 TO 19 CARBON ATOMS, ALKENYL HAVING FROM 5 TO 19 CARBON ATOMS, AND HYDROXYALKYL HAVING FROM 5 TO 19 CARBON ATOMS; R'' REPRESENTS ALKYLARYL HAVING FROM 7 TO 24 CARBON ATOMS; R1 AND R2 REPRESENT ALKYL HAVING FROM 1 TO 18 CARBON ATOMS AND THE TOTAL OF THE CARBON ATOMS IN R1 AND R2 IS FROM 5 TO 19; AND N REPRESENTS AN INTEGER OF FROM 2 TO 17; AT A TEMPERATURE BELOW 125*C.; AND (B) RECOVERING SAID LIQUID SULFURIC ACIDESTERS OF ETHOXYLATED ALCOHOLS HAVING IMPROVED STABILITY.

Inventors

• 👤 Arthur L Beiser

Bibliographic Details