公开(公告)号：US5047456A

公开(公告)日：1991-09-10

申请号：US341519

申请日：1989-04-21

申请人： Fidelis C. Onwumere ,  Sharon L. Greene ,  Shirley H. Wright

发明人： Fidelis C. Onwumere ,  Sharon L. Greene ,  Shirley H. Wright

IPC分类号： B29C41/28 ,  B29C43/00 ,  B29C67/24 ,  C08G18/10 ,  C08G18/48 ,  C08G18/50 ,  C08G85/00 ,  C08J5/18 ,  D01F6/70 ,  D04H1/56

CPC分类号： C08J5/18 ,  B29C41/28 ,  B29C43/006 ,  B29C67/24 ,  C08G18/10 ,  C08G18/4833 ,  C08G18/5024 ,  C08G85/00 ,  D01F6/70 ,  D04H1/56 ,  B29K2105/25 ,  C08G2210/00 ,  C08J2375/04

摘要： The invention provides a thermally reversible superabsorbent polymer adapted for use in melt processes, the polymer having a thermally reversible bond which is adapted to evanesce at an elevated temperature and revert to a thermally reversible bond upon cooling to ambient temperature so that the polymer is adapted, upon being heated to that elevated temperature, to dissociate into melt processable polymer fragments and, upon being cooled from that elevated temperature to ambient temperature, to re-associate. Also disclosed are superabsorbent polymer fibers and sheets formed from the thermally reversible superabsorbent polymer. The polymer fibers may be meltblown fibers which may be formed into a coherent nonwoven web. The meltblown fibers may include microfibers. The meltblown web may also include at least one type of secondary fiber, particulates or a mixture of fibers and particulates.

摘要翻译： 本发明提供了一种适用于熔融过程的热可逆超吸收聚合物，该聚合物具有热可逆键，其适于在升高的温度下消失，并且在冷却至环境温度时回复为热可逆键， 在被加热至该升高的温度时，解离成可熔融加工的聚合物碎片，并在从该升高的温度冷却至环境温度时重新结合。 还公开了超吸收聚合物纤维和由热可逆超吸收聚合物形成的片材。 聚合物纤维可以是可以形成相干非织造纤维网的熔喷纤维。 熔喷纤维可以包括微纤维。 熔喷纤维网还可以包括至少一种类型的次级纤维，颗粒或纤维和颗粒的混合物。