公开(公告)号：US20200095394A1

公开(公告)日：2020-03-26

申请号：US16254623

申请日：2019-01-23

Applicant: Far Eastern New Century Corporation

Inventor： Po-Chen LAI ,  Jyun-Sian LEE ,  Sih-Hao CHIANG ,  Chin-Shui LIANG ,  Hsiang-Chin TSAI

IPC: C08J11/26 ,  C07C51/09 ,  C07C51/43 ,  C08J11/16 ,  B29B17/04

Abstract: A method for manufacturing terephthalic acid includes the following operations: providing a raw material, in which the raw material includes a first raw material including polyethylene terephthalate; performing a depolymerization reaction on the first raw material to form a depolymerization product, in which the depolymerization product includes disodium terephthalate; performing a decolorization process on the disodium terephthalate to form decolorized disodium terephthalate and precipitated sludge; separating the decolorized disodium terephthalate and the sludge; and forming terephthalic acid from the decolorized disodium terephthalate after separating the decolorized disodium terephthalate and the sludge.

公开(公告)号：US20200216585A1

公开(公告)日：2020-07-09

申请号：US16541184

申请日：2019-08-15

Applicant: Far Eastern New Century Corporation

Inventor： Hsiang-Chin TSAI ,  Yi-Hsuan CHANG ,  Pang-Chin LIU

IPC: C08F20/56 ,  C08F14/06 ,  C08F14/08 ,  C08F14/12 ,  C08F12/08 ,  C08F20/06 ,  C08K3/36 ,  C08F2/20 ,  C08K5/23

Abstract: A method for manufacturing a fluorine-free water repellent includes: mixing a paraffin, an inorganic nanopowder and a first reactive monomer to form a first mixture, in which the first reactive monomer includes a structure represented by formula (A), formula (B) or a combination thereof, the formula (A) is wherein X1 is a benzene, and the formula (B) is wherein X2 is CH3 or H and X3 is an alkyl group having 18 or more carbon atoms; mixing an emulsifier, a cosolvent and water to form a second mixture; mixing the first mixture and the second mixture to form a pre-emulsion; and adding an initiator and a second reactive monomer into the pre-emulsion, in which the first reactive monomer and the second reactive monomer are polymerized to form a water repellent, wherein the second reactive monomer is vinylidene chloride.

公开(公告)号：US20200095382A1

公开(公告)日：2020-03-26

申请号：US16410808

申请日：2019-05-13

Applicant: FAR EASTERN NEW CENTURY CORPORATION

Inventor： Hsiang-Chin TSAI ,  Shih-Hsiung CHEN ,  Lewis YU

IPC: C08J3/00 ,  D01F6/84

Abstract: A copolyester resin for preparing a low-melting copolyester fiber is made by compounding a first copolyester with a second copolyester in a weight ratio of the first copolyester to the second copolyester of from 94:6 to 98:2. The first copolyester is obtained by subjecting terephthalic acid, ethylene glycol, isophthalic acid, and diethylene glycol to a copolymerization, and the second copolyester is obtained by subjecting terephthalic acid, ethylene glycol, and neopentyl glycol to another copolymerization.