Modified xanthan gum and method for modifying xanthan gum

Details Modified xanthan gum and method for modifying xanthan gum Modified xanthan gum and method for modifying xanthan gum

C - Chemistry, Metallurgy

08

B

C08B 37/00 (2006.01)

Patent

CA 2084452

A modified xanthan gum has a viscosity of not less than 800 cP as determined on a 0.5 % by weight solution thereof in a 12 % by weight aqueous sodium chloride solution at 20 °C and a ratio of this viscosity to that determined on a 0.5 % by weight solution thereof in distilled water of not less than 1.5. The modified xanthan gum can be prepared by a method comprising the steps of mixing an organic solvent which does not dissolve xanthan gum and is hydrophilic with an aqueous solution of xanthan gum in a mixer, cutting, into fine fibrous materials, deposites formed in the mixed solution together with the mixed solution with a cutter, separating and recovering the suspended fine fibrous materials from the mixed solution and then drying the materials at a temperature of not more than 80 °C. The modified xanthan gum can directly be dissolved in aqueous solutions of salts such as common salt even at room temperature and can thus easily show a desired effect of thickening the aqueous salt solutions.

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