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Application filed by Inst K T Redkikh Elementov I MfiledCriticalInst K T Redkikh Elementov I M
Priority to PT7446982ApriorityCriticalpatent/PT74469B/en
Publication of PT74469ApublicationCriticalpatent/PT74469A/en
Publication of PT74469BpublicationCriticalpatent/PT74469B/en
Treatment And Processing Of Natural Fur Or Leather
(AREA)
Abstract
Leather tanning agent contains (in wt.%): Al and ammonium sulphate contg. 0.001-1.0% TiO2 or TiO2 and ZrO2 3-20; and/or Zr and ammonium sulphate contg. 0.001-0.5% TiO2 or TiO2 and Al2O3 20-50; and Ti and ammonium sulphate contg. 0.001-1.0% Al2O3 and/or ZrO2, the balance. The agent may also contain 1-10 wt.% silicic acid as filler and tanning enhancer. The agent is made by treating a soln. contg. 80-200 g/l Ti, calculated as TiO2, with an Al sulphate soln. contg. 80-130 g/l Al, calculated as Al2O3 and/or Zr sulphate contg. 50-200 g/l Zr, calculated as ZrO2 in the presence of H2SO4 and (NH4)2SO4. Agent has better tanning activity than prior Ti-contg. agents and is easily made from available reagents.
PT7446982A1982-02-221982-02-22Leather tannig agent and process for making same
PT74469B
(en)