Redispersible particles based on silicon particles and polymers
AssigneeWacker Chemie AG
InventorsRebecca Bernhard, Dominik Jantke
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Abstract
The invention relates to methods for producing redispersible particles based on silicon particles and polymers, characterised in that a) mixtures containing silicon particles with average particle diameter d50 of >600 nm, one or more polymer containing functional groups selected from the group comprising carboxyl-, ester-, alkoxy-, amide-, imide- und hydroxy-groups, as well as one or more solvents are dried; and subsequently b) a thermal treatment is carried out at a temperature of 80° C. until below the decomposition temperature of the polymers.
Claims17
A method for producing redispersible particles based on silicon particles and polymers, comprising:
- a) mixing silicon particles having average particle diameters d50 of >600 nm, as determined by static laser light scattering using the Mie model and the measuring instrument Horiba LA 950 using alcohols or water as dispersion medium for the silicon particles, one or more polymers containing functional groups selected from the group consisting of cellulose, cellulose derivatives, polyacrylic acid and salts thereof, polyvinyl esters and polyvinyl alcohols, and also one or more solvents to form a mixture;
- b) drying the mixture by spray drying;
- and
- c) thermally treating the mixture at a temperature of from 80° C. to below the decomposition temperature of the polymers.
Dependencies are inferred from the claim text.