Process for the modification of the crystal form of...

Details Process for the modification of the crystal form of... Process for the modification of the crystal form of...

C - Chemistry, Metallurgy

07

C

260/540.3, 260/5

C07C 279/28 (2006.01)

Patent

CA 1243684

Abstract Process for the modification of the crystal form of dicyandiamide The present invention provides a process for the modification of the crystal form of dicyandiamide, wherein dicyandiamide is crystallised from aqueous solution in the presence of 0.001 to 1% by weight of polyvinyl alcohol and/or of a water-soluble cellulose ether derivative, referred to the amount of dicyan- diamide. The crystalline dicyandiamide obtained in this manner has outstanding flow and storage properties and its mechanical strength is substantially improved.

439667

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