| 摘要 |
<p>The invention refers to the preparation of hydrophilic polymer on the basis of copolymers acrylamide and acrylic acid. In this procedure acrylic acid and acrylamide are polymerised in a suitable solvent, the pH being 3 to 7, the temperature amounting to 30 to 35 degrees Centigrade, 0.05 to 0.5 part of potassium or ammonium persulphate is added and when the reaction mixture achieves the viscosity 500 to 1000 mPa.s, 5 to 50 ml of interlink is added on the basis of acrylamide and formaldehyde and the polymerisation is left to run to the end. The obtained product absorbs 300- to 350- time the amount of water or 40-time the amount of physiological saline solution and is suitable for the production of medical products and in agriculture.</p> |
