| 摘要 |
<p>An additive and method of stabilizing and decreasing sediment in a water-in-oil emulsion where the aqueous discontinuous phase contains a water-soluble vinyl addition polymer, comprising an oil-soluble polymer added to the continuous phase in the amount of about 0.1 to 1.0% by weight based on the total polymer emulsion. Preferred water-in-oil emulsions include those containing polyacrylamide, polyacrylic acid predominantly in salt form, and copolymers thereof; and preferred oil-soluble polymers include polyisobutylene, polybutadiene, Betaprene H*, poly(t)butylstyrene, and natural rubber. The additive and method are useful for redispersing such emulsions.</p> |
