Invention Grant
- Patent Title: Method for production of coated paper with extreme whiteness
- Patent Title (中): 生产具有极度白度的涂布纸的方法
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Application No.: US10486105Application Date: 2002-08-07
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Publication No.: US07641765B2Publication Date: 2010-01-05
- Inventor: Thierry Blum , Friedrich Linhart , Stephan Frenzel
- Applicant: Thierry Blum , Friedrich Linhart , Stephan Frenzel
- Applicant Address: DE Ludwigshafen
- Assignee: BASF Aktiengesellschaft
- Current Assignee: BASF Aktiengesellschaft
- Current Assignee Address: DE Ludwigshafen
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: DE10138631 20010813
- International Application: PCT/EP02/08813 WO 20020807
- International Announcement: WO03/016624 WO 20030227
- Main IPC: D21H23/22
- IPC: D21H23/22 ; D21H23/76 ; D21H21/30 ; D21H19/80
Abstract:
Paper coated with a coating slip containing at least one optical brightener is produced by a process in which base paper or precoated paper is treated, before application of the coating slip containing optical brightener, with at least one substance which enhances the efficiency of optical brighteners.
Public/Granted literature
- US20040154764A1 Method for production of coated paper with extreme whiteness Public/Granted day:2004-08-12
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