Aqueous suspensions containing polymerized fatty acid-based...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof

Reexamination Certificate

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C528S322000, C528S339000, C528S339300, C524S600000, C524S601000, C524S602000, C524S606000, C524S608000, C524S800000, C524S801000

Reexamination Certificate



Polymerized fatty acid-based polyamides may be combined with low polarity and high polarity co-solvents to produce homogeneous water-in-oil emulsions. These emulsions have the appearance of white or translucent creams, with stiffnessranging from soft and greasy, to hard and able to support weight. These emulsions are stable in the presence or absence of surfactant, and are formed easily by mixing components with heat and then cooling. These emulsions are useful in applications favoring an oil base, such as skin creams and cosmetics with emulsions of low stiffness, and car polish with emulsions of greater stiffness.

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