发明申请
- 专利标题： Process of tanning hide
- 专利标题（中）： 鞣皮的过程
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申请号： US10523773申请日： 2003-08-08
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公开(公告)号： US20050268671A1公开(公告)日： 2005-12-08
- 发明人: Wagner Lourenco
- 申请人： Wagner Lourenco
- 优先权： BRPI-0203260-0 20020809
- 国际申请： PCT/BR03/00110 WO 20030808
- 主分类号： C14C3/06
- IPC分类号： C14C3/06 ; C14B1/00
摘要：
The present invention relates to a process of tanning where the step of contacting the hides with chromium salts is preceded by acidification with organic acids sufficient to reach a pH of from about 3.5 to 5 at the surface of the hide and pH of from about 4.0 to 6.5 at the internal part of a cross section of the hide.
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