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US 10,913,820 B2Granted
Process for producing a cationic dyeable polyester and the cationic dyeable polyester produced thereby
AssigneeFar Eastern New Century Corporation
InventorsDer-Ren Hwang, Cheng-Ting Wang, Yen-Hsien Li
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Abstract
A process for producing a cationic dyeable polyester includes the steps of: (a) subjecting a combination of a bis-hydroxy alkyl terephthalate monomer of Formula (1) defined herein and an organic diacid monomer mixture which includes an aromatic dicarboxylic acid monomer and a sulfo group-containing aromatic dicarboxylic acid dyeable monomer to an esterification reaction to form an esterification reaction product; and (b) subjecting the esterification reaction product to a polycondensation reaction.
Claims10
A process for producing a cationic dyeable polyester, comprising the steps of:
- (a) subjecting a combination of a bis-hydroxy alkyl terephthalate monomer of Formula (1) and an organic diacid monomer mixture, which includes an aromatic dicarboxylic acid monomer and a sulfo group-containing aromatic dicarboxylic acid dyeable monomer, to an esterification reaction to form an esterification reaction product,
- wherein each R1 independently represents hydrogen, phenyl, a C1-C6 linear alkyl group, or a C3-C6 branched alkyl group;
- and
- (b) subjecting the esterification reaction product to a polycondensation reaction.
1 more element
Dependencies are inferred from the claim text.