Postcrosslinking of water absorbing polymers with cyclic...

Details Postcrosslinking of water absorbing polymers with cyclic... Postcrosslinking of water absorbing polymers with cyclic...

2005-07-28

2010-02-02

Eashoo, Mark (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S054300

Reexamination Certificate

active

07655733

ABSTRACT:
Disclosed is a process for postcrosslinking a water absorbing polymer by the polymer being treated with at least one postcrosslinker and postcrosslinked and dried during or after the treatment by raising the temperature, the at least one postcrosslinker being a cyclic carbamate or a cyclic urea, wherein the cyclic carbamate or the cyclic urea was obtained by reacting respectively an aminoalcohol or a diamine with a cyclic carbonate.

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