C - Chemistry – Metallurgy – 12 – H
Patent
C - Chemistry, Metallurgy
12
H
195/140, 195/34,
C12H 1/00 (2006.01) C08B 37/00 (2006.01) C12P 19/00 (2006.01) C12P 19/06 (2006.01)
Patent
CA 1038781
ABSTRACT OF THE DISCLOSURE: Fermentation broths and other aqueous suspensions containing a dissolved xanthan gum and suspended solids resulting from the fermentation producing the xanthan gum are clarified by treatment with a minor amount of a protease enzyme. The injectivity of aqueous solutions containing xanthan gum so clarified is improved, in oil well flooding operations over solutions not so treated.
221121
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