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1. 发明申请

WO0188265A3 PAPERMAKING PULP AND FLOCCULANT COMPRISING ACIDIC AQUEOUS ALUMINA SOL 审中-公开
标题翻译：包含酸性水性氧化铝溶胶的造纸浆和絮凝剂
公开(公告)号：WO0188265A3
公开(公告)日：2002-05-23
申请号：PCT/US0116075
申请日：2001-05-17
申请人： BUCKMAN LABOR INC
发明人： KARVE MOHAN D , COVARRUBIAS ROSA M , DYKSTRA GERALD M , MIRZA SALEEM
IPC分类号： D21H17/00 , D21H17/29 , D21H17/37 , D21H17/42 , D21H17/44 , D21H17/67 , D21H21/10 , D21H21/52 , D21H23/10 , D21H23/76 , B01D21/01 , C02F1/52
CPC分类号： D21H17/675 , D21H17/005 , D21H17/29 , D21H17/375 , D21H17/42 , D21H21/52 , D21H23/765
摘要： Methods of making paper or paperboard are described. According to one of the methods, an acidic aqueous alumina sol is introduced to a papermaking pulp to form a treated pulp having improved retention properties. The acidic aqueous alumina sol preferably has a pH of from about 3 to about 6. The sol preferably contains elongate secondary particles which are elongated from about 50 nm to about 300 nm in only one plane and formed by edge-to-edge coagulation of rectangular plate like primary particles having a length on one side of from about 10 nm to about 30 nm when observed through an electron microscope. The pulp may also be treated with at least one coagulant, at least one flocculant, at least one cationic starch, at least one cellulytic enzyme, at least one biocide, and/or other conventional papermaking pulp additives. The resulting pulp is formed into a sheet of pulp and then drained to form a paper or paperboard. Other papermaking processes are also described as is a papermaking apparatus for carrying out the methods. Paper and paperboard containing dried pulp that has been treated with an acidic aqueous alumina sol are also described. Methods to flocculate particulate materials in a dispersion are also described.
摘要翻译：描述制造纸或纸板的方法。根据一种方法，将酸性水性氧化铝溶胶引入造纸纸浆中以形成具有改进的保留性能的处理纸浆。酸性水溶性氧化铝溶胶优选具有约3至约6的pH。该溶胶优选含有细长的二次粒子，其仅在一个平面中从约50nm至约300nm延伸，并且通过矩形的边缘到边缘凝固而形成当通过电子显微镜观察时，板状的初级粒子的一侧的长度为约10nm至约30nm。纸浆还可以用至少一种凝结剂，至少一种絮凝剂，至少一种阳离子淀粉，至少一种纤维素分解酶，至少一种杀生物剂和/或其它常规造纸纸浆添加剂进行处理。所得纸浆形成纸浆，然后排干以形成纸或纸板。其他造纸方法也被描述为用于实施该方法的造纸装置。还描述了已经用酸性水溶性氧化铝溶胶处理的含有干纸浆的纸和纸板。还描述了在分散体中絮凝颗粒材料的方法。

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