发明授权
- 专利标题: Chrome utilization in chrome tanning
- 专利标题(中): Chrome鞣制中的Chrome利用率
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申请号: US176877申请日: 1980-08-11
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公开(公告)号: US4327997A公开(公告)日: 1982-05-04
- 发明人: William C. Prentiss , Inaganti V. Prasad
- 申请人: William C. Prentiss , Inaganti V. Prasad
- 申请人地址: PA Philadelphia
- 专利权人: Rohm and Haas Company
- 当前专利权人: Rohm and Haas Company
- 当前专利权人地址: PA Philadelphia
- 主分类号: C14C1/00
- IPC分类号: C14C1/00 ; C14C3/04 ; C14C3/06 ; C14C3/16 ; C14C3/08
摘要:
Method of chrome tanning wherein, after unhairing and bating, a water soluble amino compound is provided in an acidified hide stock solution prior to or simultaneously with addition of a chrome tanning agent. The amount of chrome tanning agent required in the charge, and therefore the amount of chrome in the exhaust liquor or effluent, is thereby substantially reduced, thus providing greater control over pollution due to chrome in leather manufacturing operations.
公开/授权文献
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