Water-absorbing polymer particles inhibiting the breakdown of body fluids, composites comprising the same and use thereof
申请人:Harren Jorg
公开号:US20050171235A1
公开(公告)日:2005-08-04
Water-absorbing, antimicrobial polymer particles comprising from about 1 to about 500 ppm, based on the particles, of a silver ion based on a silver salt, wherein the silver salt has a solubility product of at least about 1×10
−8
(mol/l)
m+n
; at least about 10 wt. %, based on the polymer particle, of a water-absorbing polymer based on: (α1) from about 50 to about 99.99 wt. % polymerized, ethylenically unsaturated, acid groups-containing monomers or salts thereof, (α2) 0 to about 40 wt. % polymerized, mono-ethylenically unsaturated monomers polymerizable with α1, (α3) from about 0.01 to about 5 wt. %, preferably from about 0.1 to about 3 wt. % of one or more crosslinkers, (α4) 0 to about 30 wt. % of a water soluble polymer and (α5) 0 to about 20 wt. % of auxiliaries, the concentration of the silver ion based on a silver salt in at most about 90 vol. % of the particles is less than about 0.01 ppm.
吸水性抗菌聚合物颗粒,以颗粒为基础,包含约 1 至约 500 ppm 的银离子(基于银盐),其中银盐的溶度积至少为约 1×10
-8
(摩尔/升)
m+n
(α1)约 50 至约 99.99 重量%的聚合的含酸基团的乙烯基不饱和单体或其盐,(α2)0 至约 40 重量%的可与 α1聚合的单乙烯基不饱和单体,(α3)约 0.01至约5重量%,最好是约0.1至约3重量%的一种或多种交联剂,(α4)0至约30重量%的水溶性聚合物和(α5)0至约20重量%的助剂,在至多约90体积%的颗粒中基于银盐的银离子浓度小于约0.01ppm。