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US 2007/0175361 A1Published application
Process of making cold-water dispersible cellulose ethers and uses thereof
OwnerStephen R. Bonney, Hassan H. Rmaileinventors
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Abstract
The present invention relates to an improved process for preparing cold water dispersible water-soluble polymers particles which readily disperse in aqueous systems. These particles are suitable for use in such end use compositions including personal care, household care, construction, paint, oilfield, pharmaceutical food including dairy and non-diary products, and antifouling products
Claims22
A process for producing cold water dispersible water-soluble polymers comprising the steps of:
- (a) introducing a particulate, water-soluble polymer and an aqueous solution comprising a surface treatment additive into a high shear mixing chamber prior to being introduced into a pneumatic drying means and maintaining the particulate, water-soluble polymer suspended in a gas carrier within a chamber of the pneumatic drying means;
- (b) maintaining the gas carrier at a temperature below the temperature at which the water soluble polymer particles degrade or become “sticky” and agglomerate to leave residual, dried surface treatment additive coated on the particulate, water-soluble polymer in an amount sufficient to produce the cold water dispersible water-soluble polymer.
The process for producing cold water dispersible water-soluble polymers of claim, wherein the pneumatic drying means comprises a fluid bed dryer.
Dependencies are inferred from the claim text.