Back to results
US 2018/0044853 A1Published application
Stable and homogenous anthraquinone compositions and preparations thereof
AssigneeCargill, Incorporated
InventorsTimothy Walter ABRAHAM, Brent A HAWKINS, Fred MARTIN, Manoj SAHOO
Life of this patent
Estimating the term…
Abstract
Substantially homogeneous and stable suspensions of anthraquinone (AQ) compositions and methods of preparation are disclosed. The AQ compositions are utilized in pulping processes.
Claims53
A composition for use in a pulping process comprising:
- anthraquinone;
- one or more metal ions;
- a dispersant;
- a polyglycol;
- and
- water,
- wherein the composition is a substantially homogeneous and stable suspension.
4 more elements
A composition for use in a pulping process comprising:
- anthraquinone;
- one or more calcium salts;
- one or more magnesium salts;
- a salt of diisopropylnaphthalene sulfonate;
- polyethylene glycol;
- and
- water,
- wherein the composition is a substantially homogeneous and stable suspension.
5 more elements
A composition for use in a pulping process comprising:
- anthraquinone having a mean particle size of about 150 μm or less;
- one or more metal ions;
- a dispersant;
- a polyglycol;
- and
- water.
3 more elements
A composition for use in a pulping process comprising:
- anthraquinone having a mean particle size of about 150 μm or less;
- one or more calcium salts;
- one or more magnesium salts;
- a salt of diisopropylnaphthalene sulfonate;
- polyethylene glycol;
- and
- water.
4 more elements
A method for preparing a composition for use in a pulping process, comprising:
- a. providing a solution comprising water, at least one or more metal ions, a dispersant, and a polyglycol ;
- and
- b. adding anthraquinone to the solution with agitation at a speed such that the composition forms a substantially homogeneous and stable suspension.
A method for preparing a composition for use in a pulping process comprising:
- a. providing a solution comprising water, a magnesium salt, a calcium salt, a salt of diisopropylnaphthalene sulfonate, and polyethylene glycol;
- and
- b. adding anthraquinone having a particle size of about 150 μm or less to the solution with agitation at a speed such that the composition forms a substantially homogeneous and stable suspension.
Dependencies are inferred from the claim text.