Superabsorber mixtures
Superabsorbent mixtures M comprising at least 70% by weight of superabsorbent A having a liquid absorption of 20 g/g (T20) of less than 300 s and/or a volumetric liquid absorption under pressure 0.3 psi (2.07 kPa) (VAUL) with a τ value of less than 400 s, and at least 5% by weight of superabsorbent B having a centrifuge retention capacity (CRC) of at least 30 g/g.
1. A superabsorbent mixture M comprising at least 70% by weight of superabsorbent A having a liquid absorption of 20 g/g (T20) of less than 300 s and/or a volumetric liquid absorption under pressure 0.3 psi (2.07 kPa) (VAUL) with a τ value of less than 400 s, and at least 5% by weight of superabsorbent B having a centrifuge retention capacity (CRC) of at least 30 g/g.
2. The superabsorbent mixture M according to claim 1 , wherein superabsorbent A has a liquid absorption of 20 g/g (T20) of less than 240 s and/or a volumetric liquid absorption under pressure 0.3 psi (2.07 kPa) (VAUL) with a τ value of less than 350 s.
3. The superabsorbent mixture M according to claim 1 , wherein superabsorbent A has a liquid absorption of 20 g/g (T20) of less than 180 s and/or a volumetric liquid absorption under pressure 0.3 psi (2.07 kPa) (VAUL) with a τ value of less than 250 s.
4. The superabsorbent mixture M according to claim 1 , wherein superabsorbent A has a liquid absorption of 20 g/g (T20) of less than 120 s and/or a volumetric liquid absorption under pressure 0.3 psi (2.07 kPa) (VAUL) with a τ value of less than 200 s.
5. The superabsorbent mixture M according to claim 1 , wherein superabsorbent B has a centrifuge retention capacity (CRC) of at least 35 g/g.
6. The superabsorbent mixture M according to claim 1 , wherein superabsorbent B has a centrifuge retention capacity (CRC) of at least 40 g/g.
7. The superabsorbent mixture M according to claim 1 , wherein superabsorbent B has a centrifuge retention capacity (CRC) of at least 45 g/g.
8. The superabsorbent mixture M according to claim 1 , wherein superabsorbent A has a mean sphericity (mSPHT) of less than 0.72.
9. The superabsorbent mixture M according to claim 1 , wherein superabsorbent B has a mean sphericity (mSPHT) of greater than 0.72.
10. The superabsorbent mixture M according to claim 1 , wherein superabsorbent A has a bulk density (ASG) of less than 0.70 g/ml.
11. The superabsorbent mixture M according to claim 1 , wherein superabsorbent B has a bulk density (ASG) of greater than 0.70 g/ml.
12. The superabsorbent mixture M according to claim 1 , wherein superabsorbent A has been surface postcrosslinked.
13. The superabsorbent mixture M according to claim 1 , wherein superabsorbent B has not been surface postcrosslinked.
14. The superabsorbent mixture M according to claim 1 , wherein superabsorbent A and/or superabsorbent B has an average particle size of 250 to 500 μm.
15. A hygiene article comprising a superabsorbent mixture M according to claim 1 .