公开(公告)号：US20180022873A1

公开(公告)日：2018-01-25

申请号：US15551644

申请日：2016-02-18

Applicant: SABIC Global Technologies B.V.

Inventor： Viswanathan Kalyanaraman

IPC: C08G73/10 ,  C09D179/08

CPC classification number: C08G73/1032 ,  C08G73/1017 ,  C09D179/08

Abstract: A process is disclosed for synthesis of a poly(amic acid), including reacting a dianhydride and a diamine in the presence of a tertiary amine, tertiary ammonium salt, tertiary ammonium hydroxide, secondary amine, secondary ammonium salt, secondary ammonium hydroxide, quaternary ammonium salt, quaternary ammonium hydroxide, ammonium hydroxide, or a combination comprising at least one of the foregoing, in water, at a temperature of 60 C to 180 C, or 60 C to 100 C, or 100 C to 180 C, under an inert atmosphere, with agitation, to produce an aqueous poly(amic acid).

公开(公告)号：US20160145391A1

公开(公告)日：2016-05-26

申请号：US14924474

申请日：2015-10-27

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Viswanathan Kalyanaraman ,  Donald Owens ,  Norman Johnson ,  Albert Stella ,  David Woodruff ,  Paul Howson

IPC: C08G73/10 ,  C08K5/49 ,  C08K3/32

CPC classification number: C08G73/1046 ,  C08G73/105 ,  C08J3/14 ,  C08J2379/08 ,  C08K3/32 ,  C08K5/49 ,  Y10T428/2982

Abstract: A process for making ultra-fine particles of a high performance polymer in a yield greater than 90%, which includes dissolving the high performance polymer in an organic solvent capable of dissolving the polymer to form a solution; emulsifying the solution by combining the solution with water and a surfactant to form an emulsion; transferring the emulsion into a receiving water containing a surfactant to remove the organic solvent and form a slurry; and recovering particles of less than 75 microns in diameter in a yield greater than 90%.

Abstract translation: 以高于90％的产率制造高性能聚合物的超细颗粒的方法，其包括将高性能聚合物溶解在能够溶解聚合物的有机溶剂中以形成溶液; 通过将溶液与水和表面活性剂结合来乳化溶液以形成乳液; 将乳液转移到含有表面活性剂的接收水中以除去有机溶剂并形成浆料; 并以大于90％的产率回收直径小于75微米的颗粒。