公开(公告)号：US5435841A

公开(公告)日：1995-07-25

申请号：US248928

申请日：1994-05-25

申请人： Nancy Clungeon ,  Gregory J. Flynn ,  Zhentao He ,  Jose M. Rodriguez

发明人： Nancy Clungeon ,  Gregory J. Flynn ,  Zhentao He ,  Jose M. Rodriguez

IPC分类号： C08G12/12 ,  D21H19/62 ,  C09D7/12 ,  C09D103/02

CPC分类号： D21H19/62 ,  C08G12/12

摘要： This invention relates generally to insolubilizers for use with binders in paper coating compositions. There is provided a process for preparing both an insolubilizer and paper coating composition containing the insolubilizer and a binder which, when applied onto paper products, significantly enhances their wet-rub resistance.The insolubilizer is prepared by:(a) forming a glyoxal-urea adduct by reacting from about 1.0 to about 4.0 moles of glyoxal with about 1.0 mole of urea, at an elevated temperature,(b) cooling the glyoxal-urea adduct to room temperature,(c) adding from about 0.5 to about 2.0 moles of free glyoxal to the glyoxal-urea adduct to form an oligomer, and(d) adjusting the pH of the oligomer to from about 5 to about 7.

摘要翻译： 本发明一般涉及用于纸涂料组合物中的粘合剂的不溶性增稠剂。 提供了一种制备含有不溶物和粘合剂的不溶性和纸张涂料组合物的方法，当将其施加到纸产品上时，其显着增强了它们的耐湿摩擦性。 不溶物通过以下方法制备：（a）通过在高温下使约1.0至约4.0摩尔乙二醛与约1.0摩尔脲反应形成乙二醛 - 脲加合物，（b）将乙二醛 - 脲加合物冷却至室温 ，（c）从约0.5至约2.0摩尔的游离乙二醛加入到乙二醛 - 脲加合物中以形成低聚物，和（d）将低聚物的pH调节至约5至约7。