초록 ▼

The invention relates to a process for the gel or surface postcrosslinking of water-absorbing polymers in which the polymers are treated with a surface postcrosslinking solution and during or after the treatment are postcrosslinked and dried by means of an increase in temperature, the crosslinker be

The invention relates to a process for the gel or surface postcrosslinking of water-absorbing polymers in which the polymers are treated with a surface postcrosslinking solution and during or after the treatment are postcrosslinked and dried by means of an increase in temperature, the crosslinker being a compound of the formula [EQU1]in which R1 and R2 independently of one another are H, hydroxyl, phenyl or C1-C6-alkyl, R3 is hydrogen, C1-C12-alkyl, C1-C12-alkenyl or C6-C12-aryl and R4 and R5 independently of one another are C1-C12-alkyl, C1-C12-alkenyl, C6-C12-aryl, hydroxyl, C1-C12-alkoxy or hydrogen, dissolved in an inert solvent, to water-absorbing polymers which can be obtained by said process, and to their use in hygiene articles, packaging materials and nonwovens.

대표청구항 ▼

1. A process for the gel or surface postcrosslinking of water-absorbing polymers, comprising; treating polymers with a surface postcrosslinking solution containing a crosslinker, and postcrosslinking and drying by means of an increase in temperature, wherein said crosslinker is a compound of the for

1. A process for the gel or surface postcrosslinking of water-absorbing polymers, comprising; treating polymers with a surface postcrosslinking solution containing a crosslinker, and postcrosslinking and drying by means of an increase in temperature, wherein said crosslinker is a compound of the formula [EQU6]in which R1 and R2 independently of one another are H, hydroxyl, phenyl or C1-C6-alkyl, R3 is hydrogen, C1-C12-alkyl, N-hydroxy-(C2-C6)-alkyl, C1-C12-alkenyl or C6-C12-aryl and R4 a R5 independently of one another are C1-C12-alkoxy or hydrogen, dissolved in an inert solvent.