A kind of preparation method of sulfhydryl-lignin for regenerating waste or used rubber

A kind of preparation method of sulfhydryl-lignin for regenerating waste or used rubber

  • CN 104,017,223 B
  • Filed: 04/28/2014
  • Issued: 08/07/2018
  • Est. Priority Date: 04/28/2014
  • Status: Active Grant
First Claim
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1. a kind of sulfhydryl modified lignin is in the application of regenerating waste or used rubber, it is characterised in that:

  • The preparation of sulfhydryl modified ligninMethod includes the following steps:

    By dry sulfate-reducing conditions powder and appropriate thioacetic acid, acetic anhydride and concentrated sulfuric acid mixing, constant temperatureIt reacts certain time, reaction product vacuum filtration is dried to obtain after cleaning for the sulfhydryl modified wooden of regenerating waste or used rubberElement;

    Sulfate-reducing conditions powder, thioacetic acid, acetic anhydride and the concentrated sulfuric acid mass ratio be 1;

    1.1-1.4;

    0.8;

    0.1~0.3, reaction 24-36 hours are stood at 30-50 DEG C;

    It is cleaned with ethyl alcohol after the reaction product vacuum filtration, drying mode is 30-35 DEG C of vacuum drying.

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