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Water-absorbing polymeric particles and method for the production thereof
专利权人:
Ulrich Riegel
发明人:
Ulrich Riegel,Thomas Daniel,Dieter Hermeling,Mark Elliott,Stefan Bruhns
申请号:
US12668183
公开号:
US08846565B2
申请日:
2008.07.21
申请国别(地区):
US
年份:
2014
代理人:
摘要:
The present invention relates to a water absorbing material obtainable by a process comprising the steps of bringing particles of a non surface-crosslinked water-absorbing polymer in contact witha) at least one postcrosslinker,b) 10-1000 ppm, based on the non surface-crosslinked water-absorbing polymer, of at least one Nitrogen-containing water-soluble polymer of which the Nitrogen can be protonated, andc) at least one hydrophobic polymerand heat-treating the particles thus obtained at a temperature in the range from 120° C. to 300° C. and a method for the production thereof.
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