Method of producing a high-melting powder of

Details Method of producing a high-melting powder of Method of producing a high-melting powder of

1995-09-26

1998-01-20

Geist, Gary

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568724, C07C 3724

Patent

active

057103470

ABSTRACT:
This invention relates to a method of producing a high-melting powder of characterized by comprising a step of adding water to a solution of organic solvent in the presence of a surfactant to give a water-in-oil emulsion and a step of removing the organic solvent from the emulsion in the presence of a crystal nucleus to induce crystallization to give an aqueous dispersion of accordance with this invention, crystallization is carried out in the state of an emulsion under assistance of a surfactant so that an ordinary stirrer can be used in production without resort to any special high-shear stirring equipment. Moreover, since a high-melting grade of as an aqueous dispersion, workability and safety in the subsequent processing are improved.

REFERENCES:
patent: 4737352 (1988-04-01), Owen et al.
Novikov et al; "Tr. Nauls.-Issled. Inst. Osn. Khim." 20, 89-93 (1969).

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