公开(公告)号：EP1694372A1

公开(公告)日：2006-08-30

申请号：EP04814478.6

申请日：2004-12-16

Applicant: Stockhausen, Inc.

Inventor： JOY, Mark, C. ,  HSU, Whei-Neen

IPC: A61L15/60 ,  A61F13/15

CPC classification number: A61L15/60 ,  C08L33/10 ,  C08L33/08

Abstract: The invention relates to a superabsorbent polymer wherein an increased rate of water absorption is obtained by the addition of an encapsulated blowing agent. The invention relates to a superabsorbent polymer including an encapsulating blowing agent and having a vortex time of 40 seconds or less. In particular, the superabsorbent polymer includes from about 55 to about 99.9 wt.% of polymerizable unsaturated acid group containing monomers; from about 0.001 to about 5.0 wt.% of internal crosslinking agent; wherein the composition has a degree of neutralization of more than about 20 %; and from about 0.05 to about 10.0 wt.% of an encapsulated blowing agent.

Abstract translation: 本发明涉及一种超吸收性聚合物，其中通过加入包封的发泡剂获得吸水率的提高。 本发明涉及一种超吸收性聚合物，其包括封装发泡剂，其旋涡时间为40秒以下。 特别地，超吸收性聚合物包括约55-约99.9wt。 ％的可聚合不饱和酸基团的单体; 约0.001至约5.0wt。 ％的内部交联剂; 其中所述组合物具有大于约20％的中和度; 和约0.05至约10.0重量％ ％的封装发泡剂。

公开(公告)号：EP1682195A1

公开(公告)日：2006-07-26

申请号：EP04800944.3

申请日：2004-11-10

Applicant: Stockhausen, Inc.

Inventor： AHMED, Iqbal ,  JONES, Angela, Marie ,  SMITH, Scott, J.

IPC: A61L15/60

CPC classification number: A61L15/60 ,  Y10T428/298 ,  Y10T428/2982 ,  Y10T428/31627 ,  Y10T428/3163

Abstract: The present invention is directed to a coated superabsorbent polymer comprising a coated superabsorbent polymer having a delayed free water absorption property of absorbing about 13 grams or less of water per gram of superabsorbent polymer in about 15 seconds. The present invention is directed to a coated superabsorbent polymer having delayed water absorption comprising a) a composition comprising from about 55 to about 99.9 wt.% of polymerizable unsaturated acid group containing monomers; and from about 0.001 to about 5.0 wt.% of internal crosslinking agent; wherein the composition has a degree of neutralization of more than about 20%; and b) a salt coated on the composition.