Cold water-soluble polymer particles and method for preparing the same
AssigneeShin-Etsu Chemical Co., Ltd.
InventorKazuhisa Hayakawa
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Abstract
A method for preparing cold water-soluble polymer particles is described. The method includes subjecting a liquid containing a wetting agent or a powder of the wetting agent to dropping or spraying over or mixing with a starting water-soluble polymer particles while fluidizing the starting polymer particles without subsequent forced drying and grinding of the resulting particles. According to the invention, a powder or particulate product of a cold water-soluble polymer having excellent water wettability and capable of being quickly dissolved in water without formation of undissolved powder can be reasonably prepared and obtained from powdery or particulate water-soluble polymers without resorting to forced drying operations.
Claims6
A method for preparing cold water-soluble polymer particles comprising subjecting a liquid containing a wetting agent or a powder of the wetting agent to dropping or spraying over or mixing with starting water-soluble polymer particles while fluidizing the starting polymer particles without subsequent forced drying and grinding of the resulting particles,
- wherein said water soluble polymer particles are flown using a device which has one or more rotary shafts of agitation blades of agitators capable of flowing said water-soluble polymer particles and attached horizontally, and wherein at least one rotary shaft is rotated at 1,500 rpm or over.
Dependencies are inferred from the claim text.