Water-absorbing polymer particles that delays the degradation of the fluid, and their use composite materials comprising polymer particles

摘要

The present invention is to provide a water-absorbing polymer antimicrobial particles having sufficient antimicrobial effect is maintained longer periods SOLUTION invention relates enough. A SOLUTION means water-absorbing antimicrobial polymer particles, and the silver ions and the base of the 1~500ppm, silver salt having a solubility product of ^{10 -8} (mol / ^{l) m + n} 1 × at least in the polymer particle basis, polymer In particle standards at least 10% by weight, (α1) of 50 to 99.99% by weight of an ethylenically unsaturated acid group containing monomer is polymerized, a mixture thereof or a salt thereof, (α2) 0~40 weight % of a polymerizable with (α1), and mono-ethylenically unsaturated monomers are polymerized, (α3) 0.01~5% by weight, preferably one or more crosslinking agents of 0.1 to 3 wt% and, water soluble polymer and (α4) 0-30% by weight, and one or more auxiliaries (α5) of 0 to 20 wt%, the total weight of (α5) ((α1) ~ absorbent polymer consisting of comprises 100% by weight), and optional additives, a portion of less than 0.01ppm, the concentration of silver ions based on silver salt is 90 vol% or less of the water-absorbing polymer particles antibacterial, water-absorbing antimicrobial polymer particles, water-absorbent antimicrobial polymer particles characterized in that it is post-crosslinked with a crosslinking agent after 0.01 to 30% by weight, based on the weight of the polymer particles.