公开(公告)号：US5241009A

公开(公告)日：1993-08-31

申请号：US519629

申请日：1990-05-07

申请人： Sandra M. Yarbrough ,  Ramakant T. Shet ,  Ronald S. Harland

发明人： Sandra M. Yarbrough ,  Ramakant T. Shet ,  Ronald S. Harland

IPC分类号： A61F13/53 ,  A61L15/60 ,  C08L101/00 ,  C08L101/08

CPC分类号： A61L15/60

摘要： A polymeric composition specifically adapted to absorb blood and other proteinaceous fluids and having repeating units, said polymeric composition comprising pendant neutralized carboxyl groups (salts) and pendant carboxyl groups. The polymeric composition is characterized in that the ratio of pendant neutralized carboxyl groups to pendant carboxyl groups is within the range of from about 1:9 to about 9:11, at least about 20 mole percent of the repeating units comprise a pendant neutralized carboxyl group or a pendant carboxyl group, and at least about 50 percent of the pendant neutralized carboxyl groups have been neutralized with a potassium or lithium base.

公开(公告)号：US5346485A

公开(公告)日：1994-09-13

申请号：US056222

申请日：1993-04-30

申请人： Sandra M. Yarbrough ,  Ramakant T. Shet ,  Ronald S. Harland

发明人： Sandra M. Yarbrough ,  Ramakant T. Shet ,  Ronald S. Harland

IPC分类号： A61F13/53 ,  A61L15/60 ,  C08L101/00 ,  C08L101/08 ,  A61F13/15 ,  A61F13/20

CPC分类号： A61L15/60

摘要： A polymeric composition specifically adapted to absorb blood and other proteinaceous fluids and having repeating units, said polymeric composition comprising pendant neutralized carboxyl groups (salts) and pendant carboxyl groups. The polymeric composition is characterized in that the ratio of pendant neutralized carboxyl groups to pendant carboxyl groups is within the range of from about 1:9 to about 9:11, at least about 20 mole percent of the repeating units comprise a pendant neutralized carboxyl group or a pendant carboxyl group, and at least about 50 percent of the pendant neutralized carboxyl groups have been neutralized with a potassium or lithium base.

摘要翻译： 一种特别适于吸收血液和其它蛋白质流体并具有重复单元的聚合物组合物，所述聚合物组合物包含侧链中和的羧基（盐）和侧羧基。 所述聚合物组合物的特征在于侧挂中和的羧基与侧挂羧基的比例在约1:9至约9:11的范围内，至少约20摩尔％的重复单元包含侧链中和的羧基 或侧基羧基，并且至少约50％的侧基中和的羧基已经用钾或锂碱中和。

公开(公告)号：US5522967A

公开(公告)日：1996-06-04

申请号：US250186

申请日：1994-05-27

申请人： Ramakant T. Shet

发明人： Ramakant T. Shet

IPC分类号： D01F2/24 ,  C08B15/00 ,  D21C9/00 ,  D21F11/02 ,  D21F13/00 ,  D21H11/00 ,  D21H11/14 ,  D21H11/20 ,  D21H27/00 ,  D21H27/20

CPC分类号： C08B15/00 ,  D21C9/004 ,  D21H11/14 ,  D21H11/20

摘要： Disclosed is a method for the surface modification of cellulose fiber and the resulting product, sulfonated cellulose. Cellulose is first oxidized, preferably with sodium metaperiodate (NaIO.sub.4), to form dialdehyde oxycellulose, which is then reacted with sodium bisulfite (NaHSO.sub.3) to produce sulfonated cellulose. Sulfonation of the cellulose fiber significantly increases the dry and wet tensile strength as well as the wet strength:dry strength ratio, making this modified cellulose fiber extremely useful in a wide variety of paper products requiring a combination of good strength in both wet and dry applications.

摘要翻译： 公开了一种用于纤维素纤维的表面改性和所得产物磺化纤维素的方法。 纤维素首先被氧化，优选用偏高碘酸钠（NaIO 4）氧化，形成二醛氧化纤维素，然后与亚硫酸氢钠（NaHSO 3）反应生成磺化纤维素。 纤维素纤维的磺化显着增加了干湿抗拉强度以及湿强度：干强度比，使得该改性纤维素纤维在各种需要在湿和干应用中具有良好强度的组合的纸制品中非常有用 。