Continuous solution method
AssigneeRohm and Haas Company
InventorsJoseph R. Adamo, Gloria M. Lipovsky, Robert Hecker, Jr., Leon D. Ranalli
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Abstract
A method is disclosed for preparing a homogeneous solution of a powder, particularly hard-to-wet polymer powders, which includes: (1) feeding simultaneously a powder and a liquid solvent for the powder to a high-speed in-line mixer minimizing contact between said powder and said liquid solvent before said powder and said liquid solvent enter said mixer; (2) mixing said powder and said liquid solvent in said mixer to form a dispersion of said powder in said liquid solvent; and (3) dissolving said dispersed powder in said solvent.
Claims2
A method for preparing a homogenous solution of a powder, comprising:
- (1) feeding simultaneously a powder and a liquid solvent for the powder to a column of a high-speed in-line mixer minimizing contact between said powder and liquid solvent before said powder and said liquid solvent enter a mixing chamber of said mixer;
- (2) mixing said powder and said liquid solvent in said mixer to form a dispersion of said powder in said liquid solvent;
- and
- (3) dissolving said dispersed powder in said solvent.
A method for preparing a homogenous solution of a powder, comprising:
- (1) feeding a stream of a powder to a high-speed in-line mixer wherein said stream of said powder is aligned with the center of a lower section of a column of said in-line mixer and wherein said stream of said powder is delivered near an outlet of said lower section;
- (2) feeding simultaneously with said stream of said powder a first stream of a liquid solvent for the powder near said outlet of said lower section and a second stream of said solvent at an upper section of said column for minimizing contact between said powder and liquid solvent before said powder and said liquid solvent enter a mixing chamber of said mixer;
- (3) mixing said powder and said liquid solvent in said mixing chamber of said mixer to form a dispersion of said powder in said liquid solvent;
- and
- (4) dissolving said dispersed powder in said solvent.
Dependencies are inferred from the claim text.