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Compositions having increased concentrations of carboxymethylcellulose

  • US 9,181,659 B2
  • Filed: 10/12/2012
  • Issued: 11/10/2015
  • Est. Priority Date: 10/17/2011
  • Status: Active Grant
First Claim
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1. A method for increasing the concentration of a CMC stock solution comprising:

  • dissolving a CMC mixture in water to obtain an alkali solution of CMC, the CMC mixture comprising a dry-blend of a CMC, having a degree of substitution of less than about 0.9, and an alkali salt,wherein the alkali solution of CMC comprises the CMC in a concentration greater than about 9.8% by weight, and has a pH from about 7.5 to about 11, andwherein the alkali solution of CMC has a viscosity of less than about 5,000 mPa when measured at a temperature from about 50°

    C. to about 60°

    C.

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