申请人:Nippon Soda Co., Ltd.
公开号:EP3808795A1
公开(公告)日:2021-04-21
The present invention aims to provide a new method for producing polyamide 4 particles. The method for producing polyamide 4 particles of the present invention comprises mixing an emulsified liquid (D) obtained by mixing a solution (B) obtained by dissolving polyamide 4 in a good solvent (A) for polyamide 4 and a solvent (C) which is incompatible with the solution (B), and a solvent (E) which is a poor solvent for polyamide 4 and is compatible with the good solvent (A) and the solvent (C). The above emulsified liquid (D) may further comprise a surfactant, and the volume average diameter of the obtained polyamide 4 particles is usually in the range of 10 µm to 500 µm.
本发明旨在提供一种生产聚酰胺 4 颗粒的新方法。本发明生产聚酰胺 4 颗粒的方法包括将通过将聚酰胺 4 溶解在聚酰胺 4 的良好溶剂(A)和与溶液(B)不相容的溶剂(C)中得到的溶液(B)与聚酰胺 4 的不良溶剂且与良好溶剂(A)和溶剂(C)相容的溶剂(E)混合得到的乳化液(D)混合。上述乳化液(D)可进一步包含表面活性剂,所得到的聚酰胺 4 颗粒的体积平均直径通常在 10 微米至 500 微米之间。