Whitepaper

New Dianix

CW-SF Disperse Dyes DyStars contribution to increasing fastness requirements of the market

November 2012

Bertram Seuthe, GBD DyStar Colours Distribution GmbH

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Introduction

In growing global competition, suppliers of high-end articles such as workwear are forced to put more emphasis on excellent colour fastness and high ecological standards of their products.

DyStar as the leading dye and auxiliary supplier, as well as a solution provider for the textile industry, offers the new Dianix CW-SF disperse dye range in response to the increasing demand for better fastnesses.

New Dianix CW-SF dyes:

5 g/l

15 g/l

30 g/l

60 g/l

Amber CW-SF Rubine CW-SF Royal CW-SF Navy CW-SF

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Characteristics

Dianix CW-SF dyes are characterized by very good wash fastnesses at high temperatures and good to excellent fastness to dry heat fixation. These fastness properties are part of typical workwear requirements, (Combined workwear test).

ISO 105-C06 E2S

Combined workwear 5190C+ ISO 105-C05

CO PA PES CO PES

5 5 5 4,5 4,5

Figure 1: Performance of Dianix Royal CW-SF in a typical workwear shade:

Besides the production of high-end workwear in continuous application, the Dianix CW-SF dyes are also suitable for exhaust dyeing of polyester and blends. They fulfill the most demanding brand and retailer specifications. Dianix Royal CW-SF and Dianix Navy CW-SF show good fastness performance in wash fastness AATCC IIA 49 C as well as in water & perspiration fastnesses. In addition, both dyes have much better reduction stability than C.I. Disperse Blue 284, one of the most frequently used disperse blues worldwide. The good stability of Dianix Navy and Royal CW-SF improves the RFT performance and sets a new quality standard.

The new Dianix Rubine CW-SF has besides good fastness properties, the additional special benefit of having no fluorescence. Fluorescence of red disperse dyes is a frequent drawback leading to shade inconsistency.

Figure 2: Reduction stability comparison of Dianix Royal CW-SF versus a dye based on C.I. Disperse Blue 284

0.42% Dianix Royal CW - SF

0.25% Sulfhydrate F 150

0.25% Sulfhydrate F 150 2 g/l Sera Con P - NR

0.25% Sulfhydrate F 150 5 g/l Sera Con P - NR

0.36% Disperse Blue 284

Control dyeing Control dyeing

ISO 105-C06 E2S CV PAN PES PA6.6 CO CTA

PES staining in combined workwear 5 min.190C + ISO 105-C05

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0.90% Dianix Navy CW-SF

0.25% Sulfhydrate F 150

0.25% Sulfhydrate F 150

2 g/l Sera Con P-NR

0.25% Sulfhydrate F 150

5 g/l Sera Con P-NR

0.90% Navy based on

C.I. Disperse Blue 284

Control dyeing Control dyeing

Figure 3: Reduction stability comparison of Dianix Navy CW-SF versus a dye based on Disperse Blue 284

Figure 4: Wet fastness comparison of Dianix Royal CW-SF versus dyes based on C.I. Disperse Blue 284