Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Reexamination Certificate
2007-05-15
2007-05-15
Zemel, Irina S. (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
C210S708000, C210S710000, C525S480000, C525S507000, C528S110000
Reexamination Certificate
active
10389447
ABSTRACT:
A phosphoric ester demulsifier composition prepared by reacting one or more alkylphenol-formaldehyde resin alkoxylates or one or more polyalkylene glycols, or a mixture thereof, with about 0.001 to about 1.0 molar equivalents of one or more phosphorous compounds selected from phosphorous oxychloride, phosphorous pentoxide and phosphoric acid and a method of using the demulsifier composition to resolve water-in-oil emulsions.
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Breininger Thomas M.
Martin Michael B.
Nalco Company
Zemel Irina S.
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