公开(公告)号：US12180332B2

公开(公告)日：2024-12-31

申请号：US17377531

申请日：2021-07-16

Applicant: NAN YA PLASTICS CORPORATION

Inventor： Te-Chao Liao ,  Jung-Jen Chuang ,  Zhang-Jian Huang ,  Che-Jung Hsu

IPC: C08G63/20 ,  C08G63/85

Abstract: A plasticizer and a method for producing the same are provided. The method for producing the plasticizer includes: reacting a reaction mixture at each of a plurality of temperature holding stages in a heating process to form a semi-finished product; and purifying the semi-finished product at each of a plurality of low pressure stages of a decompression process to obtain a plasticizer. A temperature range of the heating process is from 140° C. to 220° C., a pressure range of the decompression process is from 750 Torr to 20 Torr, and the reaction mixture contains dibasic acid (e.g., adipic acid), diol (e.g. 1,4-butanediol), monohydric alcohol (e.g., 2-ethylhexanol), and catalyst (e.g., titanium catalyst).

公开(公告)号：US11117853B2

公开(公告)日：2021-09-14

申请号：US17002930

申请日：2020-08-26

Applicant: NAN YA PLASTICS CORPORATION

Inventor： Te-Chao Liao ,  Jung-Jen Chuang ,  Chung-Yu Chen ,  Che-Jung Hsu

IPC: C07C67/56 ,  C07C67/08 ,  C07C69/82 ,  C07C67/62 ,  C07C67/60 ,  C07C67/54 ,  C07C67/03

Abstract: A method for manufacturing and a method for decolorizing dioctyl terephthalate are provided. The decolorizing dioctyl terephthalate includes: providing an unpurified dioctyl terephthalate; mixing the unpurified dioctyl terephthalate with a reducing agent and an adsorption medium to obtain a first decolorizing product; and mixing the first decolorizing product with a decolorizing adsorbent material to obtain a second decolorizing product. The method for manufacturing dioctyl terephthalate includes: a transesterification step, an alkaline washing and neutralization step, a redox step, a decolorization step and a stripping step; the decolorizing adsorbent material has an acid value between 0.1 and 2 mg KOH/g, a relative humidity between 2 and 10%, and a fineness between 80 and 100 cm2/g.