Invention Grant
US08268120B2 Method for bleaching chemical paper pulps by final ozone treatment at high temperature
有权
通过最终臭氧处理在高温下漂白化学纸浆的方法
- Patent Title: Method for bleaching chemical paper pulps by final ozone treatment at high temperature
- Patent Title (中): 通过最终臭氧处理在高温下漂白化学纸浆的方法
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Application No.: US12516369Application Date: 2007-12-11
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Publication No.: US08268120B2Publication Date: 2012-09-18
- Inventor: Guillaume Pipon , Dominique Lachenal , Christine Chirat , Jean-Christophe Hostachy , Achim Ried
- Applicant: Guillaume Pipon , Dominique Lachenal , Christine Chirat , Jean-Christophe Hostachy , Achim Ried
- Applicant Address: US DE Wilmington
- Assignee: ITT Manufacturing Enterprises, Inc.
- Current Assignee: ITT Manufacturing Enterprises, Inc.
- Current Assignee Address: US DE Wilmington
- Agency: RatnerPrestia
- Priority: FR0655467 20061213
- International Application: PCT/EP2007/063743 WO 20071211
- International Announcement: WO2008/071718 WO 20080619
- Main IPC: D21C9/153
- IPC: D21C9/153 ; D06L3/04
Abstract:
A method for treating a prebleached chemical pulp including a step of ozone treatment of the pulp, carried out at a temperature above 60° C., advantageously above 65° C. and even more advantageously above or equal to 70° C.
Public/Granted literature
- US20100065233A1 METHOD FOR BLEACHING CHEMICAL PAPER PULPS BY FINAL OZONE TREATMENT AT HIGH TEMPERATURE Public/Granted day:2010-03-18
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