发明公开
- 专利标题： PAPERMAKING PROCESSES USING COAGULANTS AND OPTICAL BRIGHTENERS
- 专利标题（中）： 工艺生产纸关于凝结剂和荧光增白剂
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申请号： EP07716938.1申请日： 2007-01-24
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公开(公告)号： EP1977040A2公开(公告)日： 2008-10-08
- 发明人: HEADRICK, Gary A. , ROSENBERG, Alan B. , COVARRUBIAS, Rosa M.
- 申请人： BUCKMAN LABORATORIES INTERNATIONAL, INC.
- 申请人地址： 1256 North McLean Boulevard Memphis TN 38108-0305 US
- 专利权人： BUCKMAN LABORATORIES INTERNATIONAL, INC.
- 当前专利权人： BUCKMAN LABORATORIES INTERNATIONAL, INC.
- 当前专利权人地址： 1256 North McLean Boulevard Memphis TN 38108-0305 US
- 代理机构： Matthews, Derek Peter
- 优先权： US761913P 20060125
- 国际公布： WO2007087320 20070802
- 主分类号： D21H17/28
- IPC分类号： D21H17/28 ; D21H21/30 ; D21H21/10 ; D21H21/18
摘要：
A method of making paper or paperboard is described, which includes introducing at least one charged starch, preferably having a degree of substitution greater than 0.045, and at least one optical brightening agent to a papermaking pulp and then forming the pulp into paper or paperboard. The present invention further describes methods of improving optical brightener performance.
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