公开(公告)号：US09688838B1

公开(公告)日：2017-06-27

申请号：US15155104

申请日：2016-05-16

Applicant: NAN YA PLASTICS CORPORATION

Inventor： Te-Chao Liao ,  Jung-Jen Chuang ,  Chung-Yu Chen ,  Hsun-Min Lin

IPC: C08K5/00 ,  C08K5/12 ,  C07C67/08 ,  C07C69/82

CPC classification number: C08K5/12 ,  C07C67/08 ,  C08K2201/014 ,  C07C69/82 ,  C08L27/06

Abstract: A diisononyl terephthalate (DINT) plasticizer is synthesized by esterifying an isononanol mixture composed of multiple alcohols with pure terephthalic acid in the presence of an esterification catalyst, and the DINT plasticizer due to featuring a low plasticizer migration below 1.4% and a low glass transition temperature below −75° C. is so suitable for making those soft plastic products, such as hoses, wires, cables, exercise mats, table mats, playing balls or disposable gloves, required for having a high content of plasticizers more than 70 PHR.

公开(公告)号：US11873278B2

公开(公告)日：2024-01-16

申请号：US17398003

申请日：2021-08-10

Applicant: NAN YA PLASTICS CORPORATION

Inventor： Te-Chao Liao ,  Jung-Jen Chuang ,  Chung-Yu Chen ,  Hsun-Min Lin

IPC: C07C67/08 ,  C08K5/12

CPC classification number: C07C67/08 ,  C08K5/12

Abstract: A method for preparing a low migration plasticizer of di-2-ethylhexyl terephthalate is provided. The method includes a step of adding a short chain alcohol component having 4 to 6 carbon atoms and a long chain alcohol component having 9 to 13 carbon atoms in an esterification reaction between terephthalic acid and 2-ethylhexanol, so as to obtain a modified di-2-ethylhexyl terephthalate including residues derived from the short chain alcohol component and the long chain alcohol component. The esterification reaction is carried out under a temperature from 30° C. to 225° C. and a pressure from 80 mbar to 1033 mbar.

公开(公告)号：US10472317B2

公开(公告)日：2019-11-12

申请号：US16008164

申请日：2018-06-14

Applicant: NAN YA PLASTICS CORPORATION

Inventor： Te-Chao Liao ,  Jung-Jen Chuang ,  Hsun-Min Lin

IPC: C07C67/08 ,  C07C69/82

Abstract: A method for enhancing reaction efficiency of a terephthalate plasticizer involves using a homogenizer to fine PTA to slurry having a particle size of 80-110 μm, and esterifying the PTA slurry with a C6-C10 alcohol in the presence of a titanium-based catalyst. The reactivity is enhanced by more than 37.5%, and the terephthalate plasticizer so synthetized is low-odor and has a purity of more than 99.5% as well as good physical properties such as acid value, color, and index of refraction.