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POLYMERE SUPERABSORBANT A ABSORPTION D'EAU LIBRE RETARDEE
专利权人:
Evonik Corporation
发明人:
申请号:
EP04800944.3
公开号:
EP1682195B2
申请日:
2004.11.10
申请国别(地区):
EP
年份:
2017
代理人:
摘要:
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.
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