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Home > Industry News > Polyester dyeing auxiliary meets stringent eco standards

Polyester dyeing auxiliary meets stringent eco standards

Polyester dyeing auxiliary meets stringent eco standards2018-09-13

A new diffusion accelerant has been released by Huntsman Textile Effects that complies with current textile industry sustainability standards and improves the dyeing performance of polyester fibres including microfibres and blends – even at low temperatures.

The new auxiliary will be especially interesting for textile mills that dye polyester–elastane blends.

The move comes in response to the growing demand for new applications of polyester fibre in categories such as athleisurewear and where current diffusion accelerants sometimes contain unwanted chemicals and require additional levelling agents and anti-foaming products that may be hazardous to people and the environment.

Kerim Oner, global marketing manager for dyeing auxiliaries at Huntsman says: “We expect this latest offering to change the way that the industry dyes polyester and blends while meeting stringent environmental standards.”

Huntsman has developed a new diffusion accelerant for dyeing polyester which it says will help textile mills to achieve the high-performance dyeing of polyester, microfibres and blends, in a way that complies with current and anticipated industry sustainability standards.

The new ‘Univadine E3-3D’ is said to be a next-generation diffusion accelerant that has been developed in response to the boom in demand for polyester in new areas such as sports and athleisure apparel markets, which are expanding rapidly.

A low odour accelerant it is said to be free of benzyl benzoate and other such potentially hazardous substances. The new auxiliary uses Huntsman’s ‘Active Diffusion Technology’ and enables high-speed dyeing with best-in-class levelling, retarding and migration properties, according to the company.

The company explained how the new auxiliary has a high affinity to polyester, causing the fibre to swell and increasing the diffusion of the disperse dye, even at lower temperatures. Multiple levelling mechanisms then slow down the exhaustion rate to ensure safe, defect-free dyeing. Finally, as the dye bath heats up, the product’s strong support for disperse dye migration ensures the dye molecules are evenly absorbed.

This means the new technology can be used to successfully dye polyester fibres in tightly wound or high-density yarn/beam dyeing and is also suitable for jet applications without the need for anti-foaming products.

In addition, reducing exposure to high heat, Huntsman says its ‘Active Diffusion Technology’ minimises the potential to damage the elastane in polyester–elastane blends and provides for on-tone dyeing of microfibres and is said to increase reproducibility, allowing mills to dispense with additional levelling agents.

The new diffusion accelerant complies with the requirements of bluesign, in addition to being suitable for Standard 100 by OEKO-TEX and an approved input dyeing auxiliary chemical for GOTS (Global Organic Textile Standard) certified textile products.

“Its environmental credentials offer mills greater processing flexibility and an optimum price-performance ratio,” said Kerim Oner, Global Marketing Manager for Dyeing Auxiliaries at Huntsman Textile Effects. “We expect this latest offering to change the way that the industry dyes polyester and blends while meeting stringent environmental standards.”

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