Method for producing stable-phase crystals using physical grinding
AssigneeUniversity-Industry Cooperation Group of Kyung Hee University
InventorsWoo Sik Kim, Jeong Ki Kang, Jinsoo Kim, Jinsoo Kim
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Abstract
The present disclosure relates to a method for producing stable phase crystals using physical grinding, and specifically, to a method for efficiently and stably phase-transforming a metastable phase crystal into a stable phase crystal without using chemicals such as additives for promoting the phase transformation from the metastable phase crystal into the stable phase crystal.
Claims3
A method for producing a stable phase crystal, the method including a physical grinding process of a metastable phase crystal without adding an additional compound for promoting phase transformation,
- wherein the metastable phase crystal is an organic crystal of glycine, which is precipitated from a supersaturated solution,
- wherein the physical grinding process is to grind the metastable phase crystals by rotating inert solid grains at 200 to 300 rpm for 24 to 48 hours, and
- wherein a size of the inert solid grain is 1.7 mm to 2 mm.
Dependencies are inferred from the claim text.