Method for modifying cellulose ethers
OwnerFriedrich Girg, Roland Friedel +1inventors
InventorsFriedrich Girg, Roland Friedel, Alf Hammes
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Abstract
The invention relates to a method for modifying cellulose ethers. The inventive method is characterised in that a cellulose ether having a humidity content of between 5 and 90 % is intensively mixed with between 0.1 and 5 wt. %—in relation to the dry cellulose ether—of an additive or an additive mixture in the form of an aqueous or organic suspension or solution, at temperatures of between 20 and 100 ° C. and the mixture obtained is then dried.
Claims7
A process for modifying cellulose ethers, characterized in that a cellulose ether having a moisture content of from 5 to 90% is mixed intensively, at temperatures of from 20 to 100° C., with from 0.1 to 5% by weight, based on the dry cellulose ether, of an additive or an additive mixture in the form of an aqueous or organic suspension or solution, and the resulting mixture is subsequently dried.
The process as claimed in at least one of the preceding claims, characterized in that the resulting mixture is subjected to grinding, at the same time as the drying or following it.
Dependencies are inferred from the claim text.