Production technology for preparing wet white leather on basis of Zr-Al-Ti complex

Production technology for preparing wet white leather on basis of Zr-Al-Ti complex

  • CN 105,238,888 A
  • Filed: 10/27/2015
  • Published: 01/13/2016
  • Est. Priority Date: 10/27/2015
  • Status: Active Application
First Claim
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1. , based on a production technique for the white wet leather of zirconium aluminium titanium complex preparation, it is characterized in that, in turn include the following steps:

  • Step 1, routine prepare pickled skin, weigh the weight of pickled skin, by the weight part of agents useful for same in this weight determination subsequent treatment process step;

    Step 2, pickled skin pre-treatment (reagent dosage is by the percent basis of pickled skin weight part);

    in rotary drum, add the pickling liquid of 30-40%, the rewetting dispersing auxiliary of 0.5-1%, rotate 40min, add the both sexes trimeric cyanamide of 0.5-1%, rotate 30min, add the aldehyde tanning agent of 1-2% again, rotate 40-60min;

    Step 3, tanning (reagent dosage is by the percent basis of pickled skin weight part);

    add in step 2 the zirconium aluminium titanium complex of 12-15%, 0.5% phosphoric acid ester pickling oil, rotate 60min, add the zirconium aluminium titanium complex of 12-15%, 0.5% phosphoric acid ester pickling oil, rotate 60-90min, add the water-soluble polymers tanning agent of 0.5-1% again, rotate 40min;

    Step 4, carry alkali (reagent dosage is by the percent basis of pickled skin weight part);

    add the saleratus solution with water 1;

    15 dilution in step 3, adjustment pH is 4.0-4.2, hold over night;

    Step 5, washing (reagent dosage is by the percent basis of pickled skin weight part);

    in rotary drum, add 38-40 DEG C, the water of 100-120% next day, rotation 120min, discharge opeing, goes out drum.

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