Far Eastern New Century Corporation

Cheng-Ting Wang

Der-Ren Hwang

Hsiao-Chan Wang

Yen-Hsien Li

Chih-Chien Lin

Lin-Chien Yu

Hsin-Hui Cheng

Chun-Chieh Chien

Kang-Rui Liu

A copolyester having a low melting point and a high crystallinity includes a first recurring unit, a second recurring unit, and a third recurring unit, which are respectively represented by Formulas (I), (II), and (III) defined herein. A molar ratio of the first recurring unit to the second recurring unit ranges from 1:0.5 to 1:3, and a molar ratio of the first recurring unit to the third recurring unit ranges from 1:1.3 to 1:8. The copolyester may have a melting point lower than 220&#xb0; C. and a lattice enthalpy greater than 12 J/g. A process for producing the copolyester and a fiber made from the copolyester are also disclosed.

Copolyester having low melting point and high crystallinity

A process for producing a cationic dyeable polyester includes the steps of:

Process for producing a cationic dyeable polyester and the cationic dyeable polyester produced thereby

A process for producing a flame-retardant polyester includes step (a) and step (b). In step (a), a combination of a bis-hydroxy alkyl terephthalate monomer and an organic diacid monomer mixture which includes an aromatic dicarboxylic acid monomer and a carboxy-phosphinic acid monomer is subjected to an esterification reaction to form an esterification reaction product. In step (b), the esterification reaction product is subjected to a polycondensation reaction.

Process for producing a flame-retardant polyester

A process for reducing diethylene glycol formation in polyethylene terephthalate includes (a) subjecting a mixture of bis(2-hydroxyethyl)terephthalate with aromatic polycarboxylic acid to an esterification reaction, and (b) subjecting the esterification reaction product to polycondensation.

Process for reducing diethylene glycol formation in polyethylene terephthalate

A process for preparing bis(2-hydroxyethyl) terephthalate, comprising a step of: subjecting ethylene oxide and terephthalic acid in a molar ratio of from 2:1 to 3:1 to a reaction at an elevated temperature in the presence of a solvent mixture containing water and a C-Chydrocarbon in a weight ratio of from 1:1 to 3:1.

Process for preparing bis(2-hydroxyethyl) terephthalate

A method for preparing a stabilizer containing phosphate ester, including following steps: (1) distributing a compound containing phosphorous and oxide in polar aprotic solvent to obtain a mixture; (2) adding bis(2-hydroxyethyl) terephthalate (BHET) into the mixture to carry out a reaction so as to obtain a solution; and (3) hydrolyzing the solution to obtain a stabilizer containing phosphate ester, where the stabilizer includes compounds represented by the following formulas (I) and (II): where X, Xand Xare independently selected from the moiety represented by following formula (III), and Rand Rare independently selected from one of the linear or branched alkylene radicals comprising 2 to 4 carbon atoms The method yields a phosphate ester containing a phosphate monoester and a phosphate diester of a high content and only a minor amount of phosphoric acid in the absence of phosphate triester without the step of extraction.

Method for preparing stabilizer containing phosphate-ester

The present disclosure provides a method of manufacturing bis(2-hydroxyethyl) cyclohexane-1,4-dicarboxylate (BHCD) and derivatives thereof. The method includes the following steps. A first reactant including bis-hydroxyethyl terephthalate (BHET) is provided. 2-(2-hydroxyethoxy)ethyl 2-hydroxyethyl terephthalate (BHEET) is added to the first reactant including BHET to form a second reactant. The second reactant is hydrogenated.

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Taipei, Taiwan

Cheng-Ting Wang