| 摘要 |
THE INVENTION PROVIDES A HYDROPHILIC RESIN AND AN ABSORBENT ARTICLE, BOTH OF WHICH DISPLAY STILL LESS AND DISCOLORING WHEN PRESERVED FOR A LONG TIME. THE HYDROPHILIC RESIN IS ANY OF : 1) A HYDROPHILIC RESIN, OBTAINED BY A PROCESS INCLUDING THE STEP OF POLYMERIZING A MONOMER COMPONENT INCLUDING A MAJOR PROPORTION OF EITHER ONE OR BOTH OF ACRYLIC ACID AND ITS SALT WHICH MERELY HAVE A CONTENT OF AT MOST 0.20 PPM IN TOTAL OF HYDROQUINONE AND BENZOQUINONE; 2) A HYDROPHILIC RESIN, COMPRISING A MAJOR PROPORTION OF AN ACRYLIC POLYMER AND A MINOR PROPORTION OF EITHER ONE OR BOTH OF HYDROQUINONE AND BENZOQUINONE, WITH THE HYDROPHILIC RESIN FURTHER COMPRISING A QUINHYDRONATION INHIBITOR OF 10-1,000,000 TIMES THE TOTAL WEIGHT OF HYDROQUINONE AND BENZOQUINONE; 3) A HYDROPHILIC RESIN, COMPRISING A MAJOR PROPORTION OF AN ACRYLIC POLYMER AND MERELY HAVING A COLORING DEGREE (Y1) OF AT MOST 20 AFTER BEING LEFT UNDER CONDITIONS OF THE OPEN SYSTEM, 70°C, 65% RH FOR 1 WEEK; AND 4) A HYDROPHILIC RESIN, WHICH IS A WATER-ABSORBENT RESIN AND IS SURFACE-CROSSLINKED OR SURFACE-IMPREGNATED WITH A POLYHYDRIC ALCOHOL AND DISPLAYS PH OF 5.5 OR LESS IN A PHYSIOLOGICAL SALT SOLUTION AND HAS AN ABSORPTION CAPACITY OF 20G/G OR MORE FOR A PHYSIOLOGICAL SALT SOLUTION UNDER A LOAD OF 50G/CM2. IN ADDITION, THE ABSORBENT ARTICLE COMPRISES THE ABOVE HYDROPHILIC RESIN.(FIGURE 1)
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