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AssigneeBASF SE
InventorsHelmut Meffert, Werner Bertleff, Michael Kerber, Peter Spang
Estimating the term…
0050/51242 Establishing the particle size of popcorn polymers during popcorn polymerization and use of popcorn polymers Abstract The particle size of popcorn polymers is established during the popcorn polymerization by a process in which reaction mixtures forming popcorn polymers and comprising monoethylenically unsaturated monomers and a crosslinking agent are polymerized in the absence of oxygen and polymerization initiators at up to 200° C. and in which the popcorn polymerization is carried out as a precipitation polymerization in water or in the absence of a solvent and the particle size of the popcorn polymers is controlled in the range from 1 μm to 10 mm by passing an inert gas stream into the reaction mixture, and popcorn polymers having a mean particle diameter of from >400 μm to 1500 μm are used as beverage clarifiers, antidiarrheal drugs and disintegration accelerators for tablets.
A process for establishing the particle size of popcorn polymers during the popcorn polymerization, reaction mixtures forming popcorn polymers and comprising monoethylenically unsaturated monomers and a crosslinking agent being polymerized in the absence of oxygen and polymerization initiators at up to 200° C., wherein the popcorn polymerization is carried out as a precipitation polymerization in water or in the absence of a solvent and the particle size of the popcorn polymers is controlled in the range from 1 μm to 10 mm by passing an inert gas stream into the reaction mixture.
Dependencies are inferred from the claim text.