| 摘要 |
<p>Stable aqueous polyvinyl alcohol/melamineformaldehyde resin interaction products are provided comprising polyvinyl alcohol polymer and cationic melamineformaldehyde resin acid colloid in a polyvinyl alcohol/melamine-formaldehyde resin acid colloid weight ratio, on a dry basis, of from about 1/1 to about 5/1, and sufficient water to give a solids content of from about 0.7% by weight up to a level that will not cause gelation to a stage of no flow under the force of gravity in 48 hours but not in excess of 6% by weight. These aqueous polyvinyl alcohol/melamineformaldehyde interaction products have good stability, and high absorption capacity onto cellulose pulp. The use of these interaction products in paper making results in increased processing capability and improved wet and dry strength of the paper.</p> |
