Invention Grant
- Patent Title: Method of decreasing the rate of photoyellowing with thiocyanic acid
- Patent Title (中): 用硫氰酸降低光合速率的方法
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Application No.: US11302862Application Date: 2005-12-14
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Publication No.: US08092649B2Publication Date: 2012-01-10
- Inventor: Sergey M. Shevchenko , Prasad Y. Duggirala
- Applicant: Sergey M. Shevchenko , Prasad Y. Duggirala
- Applicant Address: US IL Naperville
- Assignee: Nalco Company
- Current Assignee: Nalco Company
- Current Assignee Address: US IL Naperville
- Agent Benjamin E. Carlsen; Michael B. Martin
- Main IPC: D21H17/62
- IPC: D21H17/62 ; D21H21/38 ; D21H17/11
Abstract:
A method of decreasing the rate of photoyellowing in paper containing mechanical pulp comprising: applying an aqueous solution containing an effective amount of one or more salts of thiocyanic acid on the surface of a paper sheet in a papermaking process.
Public/Granted literature
- US20070131373A1 Method of decreasing the rate of photoyellowing Public/Granted day:2007-06-14
Information query
