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    配方类型: EMULSIONS AND OTHER COLLOIDS
    配方说明: Spontaneous Resin Emulsion
    配方组成: Where no colloid mill is available and an emulsion of wide
    particle-size range is satisfactory, spontaneous resin emulsions may be
    prepared by using formulae such as No.1 and 2 that follow. A procedure
    for preparing this type of resin emulsion is:
    Step 1. Dissolve the resin in the solvent at room temperature and then
    add the oleic acid. Best results are obtained when this resin solution
    has a viscosity of 25 to 35 poises at room temperature. The cited
    proportions of resin and solvent should give a viscosity falling within
    this range.
    Step 2. Prepare the potassium hydroxide solution by dissolving the
    indicated amount of solid potassium hydroxide in the water specified, or
    by appropriate dilution of a more concentrated potassium hydroxide
    solution, to give the 2.5% solution indicated.
    Step 3. Slowly add the potassium hydroxide solution to the resin
    solution while stirring vigorously, preferably by a power-driven
    stirrer, until a viscous
    配制方法: This will yield a 2.5% solution.

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