A kind of mercaptolation method of improved synthetic Unithiol

A kind of mercaptolation method of improved synthetic Unithiol

  • CN 102,531,981 B
  • Filed: 01/18/2012
  • Issued: 05/25/2016
  • Est. Priority Date: 01/18/2012
  • Status: Active Grant
First Claim
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1. a mercaptolation method for synthetic Unithiol, is characterized in that:

  • under room temperature or heating condition,In autoclave, drop into absolute alcohol solvent, open and stir and drop into sodium alkoxide, in still, pass into and continue high pressure of hydrogen sulfide gas,Controlled pressure is stirring reaction within the scope of 0.3~

    0.5MPa, drops into 2,3-until the pH value of reactant liquor reaches at 6.5~

    7.5 o'"'"'clock againDibromo propanesulfonate, continues to stir anti-under stirring condition when continuing to pass into high pressure of hydrogen sulfide to pressure and reaching 0.3~

    0.5MPaShould, until complete mercaptolation, the reaction temperature of mercaptolation is 15 DEG C~

    60 DEG C, the reaction time of mercaptolation is15~

    90min;

    Again by the mercaptolation liquid of acquisition through spirit of vinegar acidifying, add lead acetate and become lead salt, de-plumbous, salify and recrystallizationAfter, obtain Unithiol finished product.

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