| 摘要 |
The invention provides a method for reducing foam in water containing systems by using a low-molecular weight polyethylene dispersed in a vehicle containing, for example, a mineral oil or fatty material and an emulsifier. The dispersion of polyethylene is produced by heating the polyethylene in a vehicle, such as mineral oil, to dissolve said polyethylene in said vehicle, and cooling the resulting solution to at least 60 DEG C. such that the cooling rate is never less than 4 DEG C. per minute nor more than about 20 DEG C. per minute.
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