DYEING OF POLYESTER

Presented by :Simron Kaur Arora

Roll no.23B.F. Tech (sem 5)

N.I.F.T Kolkata

Contents : Introduction Properties of Polyester Uses of Polyester Dyeing of Polyester

Introduction : Polyester is a chemically manufactured

fiber formed by the reaction of Polyethylene Terephthalate (PET) with terepthalic acid

Properties of Polyester :

Polyester is quite strong with excellent resilience

It is almost non-absorbent with a low moisture regain (0.2% to 0.8%)

Although not affected by acids, polyester is susceptible to damage by strong bases

Polyester has excellent dimensional stability and wrinkle resistant properties

Polyester Blends Polyester-cotton blend: Stain and wrinkle resistant (property of polyester)

Comfortable and absorbent (property of cotton)

Polyester-nylon blend: Strong and abraision resistant (property of nylon) Wrinkle resistant (property of polyester)

Polyester-rayon blend: Resilient and durable (property of polyester) Absorbent and good drapability (property of rayon)

Polyester-wool blend: Strong and durable (property of polyester) Good drapability and elasticity (property of wool)

Uses of Polyester Used in the manufacture of bedspreads,

sheets, pillows, furniture, upholstery, carpets, curtains and wall coverings

High tenacity and good durability makes polyester the choice of fabric for high stress outdoors use

Polyester and its blends are used for the manufacture of formal suits, trousers, shirts, and skirts

Dyeing of Polyester Disperse dyes are used for the dyeing of

polyester

Companies Producing dyes for Polyester

Name of the Company

Location Dyes Produced

1. Colourtex Surat,Gujarat Optical brighteners, textile dyes, non textile dyes, pre-treatment and finishing chemicals

2. Riddhi Siddhi Trading Co.

Mumbai,Maharashtra

Pre-treatment chemicals, dyeing and printing agents, finishing chemicals and technical textiles

3. Alfa Industries Ahmedabad,Gujarat

Specialize in dyes only ; acid dyes, reactive dyes, leather dyes , direct and disperse dyes

4. Parshwanath Dyestuff Industries

Ahmedabad, Gujarat

Reactive dyes, acid dyes, disperse dyes, food colours and pigments

ColourtexDyes Produced for Polyester

Use of the dye

1. Coralene Exclusive range of azo, anthraquinone and quinoline based disperse dyes suitable for colouration of polyester.

2. Coralene AT Disperse dyes characterized by high light and rub fastness, specially suited for colouration of  automative fabrics

3. Coralene AS Disperse dyes stable in alkaline dye bath, suitable for one bath colouration of polyster / cellulosic blends with reactive dyes

4. Coralene XF Disperse dyes that can provide deep shades with high wet fastness, especially for sportswear and  swimwear application

5. Coralene AD Alkali dischargeble disperse dyes

Courtesy : www.colourtex.co.in

Specifiation of dye classes

AT Coralene dyes : characterize by high light and rub fastness, specially suited for colouration of automotive fabrics.

AS Coralene dyes : stable in alkaline dye bath, suitable for one bath colouration of polyester / cellulosic blends with reactive dyes.

XF Coralene dyes : that can provide deep shades with high wet fastness, especially for sportswear and swimwear application.

PD Coralene dyes : suitable for colouration of polywool blends.

PT Coralene dyes : suitable for print applications of polyester and blends.

Dyes Produced for Polyester

Use of the Dye

1. Foran Disperse Dyes: Foron Violet S-WF Foron Brilliant Orange RL Foron Brown S-3BLI Foron Golden Yellow S-WF Foron Navy S-WF

Used for the dyeing of polyester, nylon, acetate and acrylic fibres. This class of dyes if volatile and environment friendly

2. Foron Ternary - D : Foron Navy BS2GRLI p Foron Yellow Brown S-2RFL.IN

p

Used exclusively for polyester; offered at highly competetive market prices

3. Foron RD - Disperse Dyes : Foron Rubine RD-GFLI 200 Foron Scarlet RD-2GSI

Used for the dyeing of polyester, acrylic and nylon

Riddhi Siddhi Trading Co.

Courtesy : www.raddhisiddhicolours.com

Alfa Industries

Courtesy : www.alfaindustries.com

Parshwanath Dyestuff Industries

Courtesy : www.parshwanathcolours.com

Standard Dye RatingsFastness Properties  :              

     Rating- 5 ………………………………....Excellent                               Rating - 1 …………………………………Poor                                      P……………………………………............Poor                                   M…………………………………………...Moderate      G…………...………………………………..Good    VG…………………………………………...Very Good    H……………………………………………..Highly    Me……………………………………………Medium    L………………………………………………Low

  Dischargeability  :                        

   1-2……………………………………………..Poor (N. D.)                              2-3……………………………………………..Poor (N. D.)   3-4………………………………………....…..Moderate to Good   4-5………………………………………….......Very Good (D)   X………………………………………..............Not Suitable                                …………………………………………….......Suitable                                  ---- ………………………………………………Can be Recommended

Bibliography