Method for improving hue of recycled bis-2-hydroxylethyl terephthalate by using ionic liquids

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United States of America

PATENT NO 12258453
APP PUB NO 20230060362A1
SERIAL NO

17808893

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Abstract

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A method for improving hue of recycled bis-2-hydroxylethyl terephthalate by using ionic liquids including providing a recycled polyester fabric; using a chemical de-polymerization liquid to chemically de-polymerize the recycled polyester fabric to form a de-polymerization product; mixing the de-polymerization product with water to form an aqueous phase liquid; dispersing an ionic liquid impurity adsorption material into the aqueous phase liquid to adsorb impurities originally present in the recycled polyester fabric.

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Patent Owner(s)

Patent OwnerAddress
NAN YA PLASTICS CORPORATION3F NO 201 TUNG HWA N RD TAIPEI

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cheng, Wei-Sheng Taipei, TW 21 7
Chuang, Jung-Jen Taipei, TW 57 17
Huang, Zhang-Jian Taipei, TW 26 4
Liao, Te-Chao Taipei, TW 380 152
Tseng, Yu-Ti Taipei, TW 7 0

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