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US 5,204,024 AGranted
Method for preventing agglomeration of powder
AssigneeTosoh Corporation
InventorsTadao Onaka, Hiroshi Fukuda
Life of this patent
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Abstract
A method for preventing agglomeration of powder, characterized in that a polyvinyl pyrrolidone and/or a vinyl pyrrolidone-vinyl ester copolymer is incorporated as an anti-agglomeration agent to the powder.
Claims7
A method for preventing the agglomeration of hygroscopic and sublimable powders of piperazine or triethylenediamine, characterized in that a polyvinyl pyrrolidone and/or a vinyl pyrrolidone-vinyl ester copolymer is incorporated as an anti-agglomeration agent to the powder.
Dependencies are inferred from the claim text.