| 摘要 |
<p>Use of polyethylene imine or imines for cleaning equipment of amino resins. The polyethylene imine or imines are preferably utilised in the form of an aqueous solution. The amount of polyethylene imine or imines used lies within a range of from about 0.005 % by weight to about 10 % by weight of pure polyethylene imine, based on the amount of resin to be washed away. The polyethylene imine or imines may be used for cleaning different sorts of glue spreading equipment of glue.</p> |
