Absorbent cores comprising a superabsorbent polymer immobilizing material

An absorbent article comprising:

• an absorbent core comprising a superabsorbent polymer material and an auxiliary adhesive;
• wherein the auxiliary adhesive comprises from about 20% to about 70% of a first polymer, by weight of the auxiliary adhesive;
• wherein the auxiliary adhesive comprises from about 30% to about 80% of a second polymer, by weight of the auxiliary adhesive;
• wherein the auxiliary adhesive has a Wet Mobilization Value of less than 50%, according to the Wet Mobilization Test Method described herein;
• wherein the auxiliary adhesive has a Storage Modulus at 100° C. of from about 200 Pa to about 400,000 Pa, according to the Oscillatory Rheometry Test Method described herein;
• wherein the auxiliary adhesive has a Strain Hardening Index of from about 25 to about 1,000, according to the Extensional Test Method described herein;
• and
• wherein the auxiliary adhesive has a Shear Viscosity at 10 (1/s) at 230° C. of from about 300 mPa·s to about 10,000 mPa·s, according to the Viscosity Rheometry Test Method described herein.

An absorbent article comprising:

• an absorbent core comprising a superabsorbent polymer material and an auxiliary adhesive;
• wherein the auxiliary adhesive comprises from about 20% to about 70% of a first polymer, by weight of the auxiliary adhesive;
• wherein the auxiliary adhesive comprises from about 30% to about 80% of a second polymer, by weight of the auxiliary adhesive;
• wherein the first polymer has a peak molecular weight of from about 20,000 g/mol to about 700,000 g/mol, according to the Peak Molecular Weight Test Method described herein;
• wherein the first polymer is a random and/or block copolymer having ethylene derived units and/or C3-C10 alpha olefin derived units, or the first polymer is a polyolefinic homopolymer having ethylene derived units or propylene derived units or 1-butene derived units, or the first polymer is a styrenic block copolymer;
• wherein the second polymer has a peak molecular weight of from about 1,000 g/mol to about 90,000 g/mol, according to the Peak Molecular Weight Test Method described herein;
• wherein the first polymer is different than the second polymer;
• wherein the auxiliary adhesive has a Shear Viscosity at 10 (1/s) at 230° C. of from about 300 mPa·s to about 10,000 mPa·s, according to the Viscosity Rheometry Test Method described herein;
• wherein the auxiliary adhesive has a Strain Hardening Index of from about 25 to about 1,000, according to the Extensional Test Method described herein;
• and
• wherein the auxiliary adhesive is substantially free of a tackifier.