The high-temperature, high-pressure (HTHP) dyeing of polyester with disperse dyes faces challenges including process complexity, excessive wastewater, high energy demands, and ecological risks. This study developed a multifunctional dyeing auxiliary via ester interchange polycondensation, specifically optimized for HTHP polyester systems. The synthesized agent integrates dispersing, leveling, retarding, and postdyeing cleaning functionalities. Among the variants, DESI30 (DMT: SIPM = 7:3, Mw = 28,283 Da) exhibited optimal performance, demonstrating exceptional thermal stability (maximum decomposition rate temperature >400°C) and interfacial activity. At 1.0 g/l, DESI30 reduced aqueous surface tension from 71.75 to 56.39 mN/m while maintaining stable foaming properties. It enhanced Disperse Orange 30 solubility (0.035 → 0.16 g/l at 0.50 g/l) and improved Disperse Red FB migration (CIE ΔE: 6.43 → 0.95 at 2.0 g/l). Washing-treatment with DESI30 (4.0 g/l, 80°C, 20 min) achieved level 4 staining fastness for Disperse Blue HRD (3.0% o.w.f.) on cotton/polyester. This auxiliary shortens dyeing cycles, reduces water and energy consumption, and offers a sustainable alternative for industrial polyester dyeing.
ChenZSunHKongW, et al.
Closed-loop utilization of polyester in the textile industry. Green Chem2023;
25(11): 4429–4437.
2.
BurkinshawSM.The roles of elevated temperature and carriers in the dyeing of polyester fibres using disperse dyes: Part 1 fundamental aspects. Coloration Technol2023;
140(2): 149–207.
3.
Al-EtaibiAMAlnassarHSEl-ApaseryMA.Dyeing of polyester with disperse dyes: part 2. Synthesis and dyeing characteristics of some azo disperse dyes for polyester fabrics. Molecules2016;
21(7). doi:10.3390/molecules21070855
4.
YiJYPeiLJLuDN, et al.
Mechanism of cellulose staining in disperse dyeing of polyester/cotton blended fabrics in non-aqueous medium. Cellulose2025. doi:10.1007/s10570-024-06345-2
5.
KetemaAWorkuAPitsikalisM.Review on intermolecular forces between dyes used for polyester dyeing and polyester fiber. J Chem2020. doi:10.1155/2020/6628404
6.
ParkKHCasettaMKoncarV.Diffusion of disperse dyes into microfibres and conventional polyester fibres. Coloration Technol2006;
118(6): 319–324.
7.
BurkinshawSM.The roles of elevated temperature and carriers in the dyeing of polyester fibres using disperse dyes: Part 4 plasticisation model of dye diffusion. Coloration Technol2024;
140(5): 667–697.
8.
BurkinshawSM.The roles of elevated temperature and carriers in the dyeing of polyester fibres using disperse dyes: Part 3 model of dye adsorption based on dye solubility. Coloration Technol2024;
140(4): 513–555.
9.
BurkinshawSM.The roles of elevated temperature and carriers in the dyeing of polyester fibres using disperse dyes: Part 2. Analysis of conventional models of dye adsorption. Coloration Technol2023;
140(3): 317–392.
10.
SunYZhongZFengK., et al.
Synthesis and application of comb-like waterborne polyurethane as a dispersant for disperse dyes. Prog Organic Coat2024;
186: 107992.
11.
ZhangYMGuoGZZhangLL, et al.
Synthesis, analysis and application of naphthalene sulfonic acid formaldehyde condensate. IOP Conf Ser Earth Environ Sci2019;
237: 22029.
12.
MoradianSOMNShemshadiR.Synthesis and structural elucidation of sulfonated naphthalene-formaldehyde. Phosphorus Sulfur Silicon Rel Elem2009;
184(3): 578–584.
13.
AgboCAcheampongCZhangL., et al.
Preparing stable pigment dispersion utilizing polyoxyethylene lauryl ether as dispersant. Pigment Resin Technol2019;
48(1): 1–8.
14.
YangQZhangHZhangZ, et al.
Substitution of alkylphenol polyoxyethylene ethers with bio-based surfactants: their synthesis, properties, and performance evaluation. Langmuir2025;
41(12): 8163–8175.
15.
YangJWangXLiuH.Lignins and lignin derivatives as dispersants for copper phthalocyanine pigment nanoparticles. ACS Sustain Chem Eng2023;
11(22): 8199–8207.
16.
ZhengQYanSChenX, et al.
Multi-site sulfonation of lignin for the synthesis of a high-performance dye dispersant. Int J Biol Macromol2024;
269: 132145.
17.
GharanjigHGharanjigKSarliMA, et al.
Effect of molecular composition of comb-like polycarboxylate dispersants on hydrophobic dye dispersion properties. J Mol Liquids2022;
350: 118615.
18.
HeJLuoY.Novel carboxylate comb‐like dispersant used in disperse dyes. J Appl Polym Sci2022;
139(20). doi: 10.1002/app.52147
19.
YuLYuJMoW, et al.
Etherification to improve the performance of lignosulfonate as dye dispersant. RSC Adv2016;
6(75): 70863–70869.
20.
LiJYinLSongL, et al.
Investigating the effect of anchoring groups modified comb-like polycarboxylate hyperdispersants on dispersion and stability in dispersed dyes. Prog Organic Coat2024;
190: 108371.
21.
TangQChenQZhouM., et al.
Preparation of polyether amine-bridged lignosulfonate for utilization as a nano dye dispersant. Int J Biol Macromol2022;
222: 2523–2534.
22.
ChenKHeJTawiahB., et al.
Facile synthesis of a cardanol‐based levelling agent as a biodegradable alternative to tristyrylphenol ethoxylates for the dyeing of polyester fabric. Coloration Technology2021;
138(3): 266–277.
23.
AfrazNMalikMHMuhammadM., et al.
Performance enhancement of novel and sustainable foam dyeing of polyester fabrics using disperse dyes. Fibers Polym2024;
25(9): 3463–3470.
24.
BurkinshawSMHowroydJKumarN, et al.
The wash-off of dyeings using interstitial water: Part 3. Disperse dyes on polyester. Dyes Pigments2011;
91(3): 340–349.
25.
BurkinshawSMSalihuG.The wash-off of dyeings using interstitial water. Part 4: Disperse and reactive dyes on polyester/cotton fabric. Dyes Pigments2013;
99(3): 548–560.
26.
BurkinshawSMLiuKSSalihuG.The wash-off of dyeings using interstitial water Part 5: Residual dyebath and wash-off liquor generated during the application of disperse dyes and reactive dyes to polyester/cotton fabric. Dyes Pigments2019,
171. doi:10.1016/j.dyepig.2017.11.021
27.
DingHXingJXuC., et al.
In-situ mineralization dyeing process of polyester/spandex blended fabric. Dyeing Finish Technol2019;
45(03): 24–26 + 58.
28.
LuJXuCXingJ., et al.
New technology of in-situ mineralization dyeing of ultrafine polyester. Dyeing Finish Technol2022;
48(12): 22–25.
29.
LiuHWuJZhengD, et al.
Synthesis and application of polyester/cotton one-bath non-reduction clearing soaping agent. Dyeing Finish Technol2021;
47(11): 48–52.
30.
PengSRWangYCaiWF.Kinetics of the transesterification of methyl methacrylate and nbutanol with tetrabutyl titanate as catalyst. Chem Ind Eng2022; 2024, 41(01): 1–11. DOI:10.13353/j.issn.1004.9533.20220110.
31.
DengQSunYTMaZF, et al.
Preparation and membrane properties of SCHD modified WPET. Plastics Ind 2022(2); 102–106: 130.
32.
ShahabSHajikolaeeFHFilippovichL, et al.
Molecular structure and UV–Vis spectral analysis of new synthesized azo dyes for application in polarizing films. Dyes Pigments2016;
129: 9–17.
33.
HutzlerSLöschDCareyE, et al.
Evaluation of a steady-state test of foam stability. Philos Mag2011;
91(4): 537–552.
34.
SafaMGharanjigKKhajaviR, et al.
A new method for clearing dyed polyester fabrics by Gemini cationic surfactants. J Surfactants Detergents2012;
16(1): 95–104.
35.
BurkinshawSMLiuKSalihuG.The wash-off of dyeings using interstitial water Part 5: Residual dyebath and wash-off liquor generated during the application of disperse dyes and reactive dyes to polyester/cotton fabric. Dyes Pigments2019;
171. doi:10.1016/j.dyepig.2017.11.021
36.
BaoYGaoLHanP, et al.
Multi-color photochromic waterborne polyurethane with high color fastness from hydroxyl-functionalized trichromatic spiropyrans. Dyes Pigments2025;
235. doi:10.1016/j.dyepig.2024.112577
37.
LiMSongKXieK, et al.
Dispersion of disperse yellow BROB with polymer surfactants and its dyeing property for polyester fabric. Fibers Polym2015;
16(3): 614–620.
38.
DingLZhangHChenL, et al.
Improved dyeing performance of blue disperse dyes with n-acetoxyethyl groups in D5 non-aqueous media system. Fibers Polym2024;
25(3): 1005–1014.
39.
PatelNCDesaiDHPatelPN.Study of lawsone and its modified disperse dyes derived by triple cascade reaction: dyeing performance on nylon and polyester fabrics. Res J Text Apparel2023;
28(4): 609–621.
40.
HuYWangYZhangX., et al.
Regenerated cationic dyeable polyester deriving from poly(ethylene terephthalate) waste. Polym Degrad Stab2020;
179. doi:10.1016/j.polymdegradstab.2020.109261
41.
BanjareMKKurreyRYadavT, et al.
A comparative study on the effect of imidazolium-based ionic liquid on self-aggregation of cationic, anionic and nonionic surfactants studied by surface tension, conductivity, fluorescence and FTIR spectroscopy. J Mol Liquids2017;
241: 622–632.
42.
BielawskaMJańczukBZdziennickaA.Correlation between adhesion of aqueous solutions of nonionic and anionic surfactant mixture with short-chain alcohols to polymer surface and their adsorption at interfaces. II. Critical surface tension of polymer wetting and work of adhesion. Int J Adhesion Adhesives2017;
74: 194–199.
43.
YuanSZhengtingCGuiyingX, et al.
Quantitative structure–property relationships of surfactants: critical micelle concentration of anionic surfactants. J Dispersion Sci Technol2002;
23(4): 465–472.
44.
Tehrani-BaghaARHolmbergK.Solubilization of hydrophobic dyes in surfactant solutionsMaterials2013;
6(2): 580–608.
45.
WuWZhouQXuB, et al.
Study on the dispersion mechanism of the polycarboxylic acid dispersant for disperse dyes. J Mol Liquids2022;
349: 118140.
46.
XuZChengQZhouX.Synthesis and application of novel glucose derived nonionic Gemini surfactant. Coloration Technol2022;
138(5): 565–578.
47.
Al-EtaibiA. MAlnassarH. SEl-ApaseryM. A.Dyeing of Polyester with Disperse Dyes: Part 2. Synthesis and Dyeing Characteristics of Some Azo Disperse Dyes for Polyester FabricsMolecules [Online], 2016.
48.
BarniESavarinoPViscardiGCargninoFFerreroGLevisM.Cationic vesicle precursors as retarding and levelling agents for the dyeing of acrylic fibres. J Dispersion Sci Technol1988;
9(3): 309–318.
49.
OmarAZEl-RahmanMAEl-SadanySK, et al.
Synthesis of novel bisazo disperse dyes: Spectroscopic characterization, DFT study and dyeing of polyester. Dyes Pigments2021;
196: 109831.
50.
QiuJXiaoJTangB., et al.
Facile synthesis of novel disperse azo dyes with aromatic hydroxyl group. Dyes Pigments2019;
160: 524–529.
51.
EpolitoWLeeYBottomleyL, et al.
Characterization of the textile anthraquinone dye Reactive Blue 4. Dyes Pigments2005;
67(1): 35–46.
52.
KimSD.Dyeing properties and improvement of washfastness of ultrafine polyester. Text Coloration Finish2003;
15(1): 48–55.
