Patent ID: 11958836
Assignee: DSM IP ASSETS B.V.
Field: Pharmaceuticals (Chemistry)
Classification: CPC A  C | IPC A  C

Claim 17:
18. A method of preparing the micronized solid amorphous 1,4-di(benzoxazol-2′-yl)benzene according to claim 1, wherein the method comprises the steps of
(a) preparing a mixture of coarse solid amorphous particles of the 1,4-di(benzoxazol-2′-yl)benzene of the formula (I), water and milling bodies and optionally at least one grinding aid and/ or optionally at least one further additive, and
(b) grinding the mixture of step (a) until the coarse solid amorphous particles of the 1,4-di(benzoxazol-2′-yl)benzene achieve a mean particle size Dn50 of 50 nm to 300 nm.