| abstract |
The present invention provides a kind of leather retanning agent producing process, concrete technology flow process explanation：Deionized water is sucked into stirred autoclave from vacuum pump, then hydroxyl sulfate is added by artificial autoreaction kettle thief hole, is opened jacket steam, is heated up 70 ~ 75 DEG C；It opens vacuum pump and acrylic acid, methacrylic acid, acrylonitrile, ethyl acrylate is added into head tank, the mixture of the above raw material is added dropwise in 2h from head tank to reaction kettle, it is slowly added to use the ammonium persulfate of deionized water dissolving in advance simultaneously, after being added dropwise, insulation reaction 1h. |