• 专利标题:   Trivalent chromium complex tanning agent comprises graphene oxide dispersion liquid, potassium dichromate, sodium carbonate, and dispersing agent comprising sodium dodecylbenzenesulfonate, acetic acid or citric acid.
  • 专利号:   CN104232808-A, CN104232808-B
  • 发明人:   LV S, ZHOU Q, CUI Y, LI Y
  • 专利权人:   UNIV SHAANXI SCI TECHNOLOGY
  • 国际专利分类:   C14C003/06
  • 专利详细信息:   CN104232808-A 24 Dec 2014 C14C-003/06 201514 Pages: 8 Chinese
  • 申请详细信息:   CN104232808-A CN10488470 23 Sep 2014
  • 优先权号:   CN10488470

▎ 摘  要

NOVELTY - Trivalent chromium complex tanning agent comprises 50-60 pts. wt. graphene oxide dispersion liquid, 6-8 pts. wt. potassium dichromate, 1-15 pts. wt. sodium carbonate, and 0.5-1 pts. wt. dispersing agent. USE - Trivalent chromium complex tanning agent. ADVANTAGE - The trivalent chromium complex tanning agent can be easily prepared with high absorption rate and reduced chromium compound residues. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparing the trivalent chromium complex tanning agent comprising adding graphene oxide dispersion liquid into a reactor, heating at 50-60 degrees C, adding potassium dichromate to the reactor, uniformly mixing, performing heat preservation reaction for 30-50 minutes, reducing the temperature to room temperature, stirring the heated mixture, slowly adding sodium carbonate to the stirred mixture, adjusting pH value to 1.5-2, adding dispersing agent to the mixture, and ultrasonically dispersing the mixture for 1-1.5 hours.