反应详情

100 g of 25 wt % polyacrylic acid aqueous solution (viscosity 8000-12000 cps, 30 ° C.) and 3 g of N-carboxy methyl acrylamide were polymerized at 70° C. for 3 hours for partial crosslinking. Sodium hydroxide was added to neutralize the pH value to 7.0 and 20 g of poly(ether alcohol)(GEP-2800, Dow Chemical Co., U.S.A.) and 1.5 g of sodium 2-pyrrolidone-5-carboxylate were added. Deionized water was then added to the resulting product to adjust the solid content thereof to 35 wt %. The viscosity of the resultant solution was measured as 6000 to 6500 cps(30° C.). The resulting product was tested according to the procedures as set forth in Example 1 and the test results are listed in Table 1.

1. customwas measured as 6000 to 6500 cps(30° C.)
2. customthe test results