Nestogen - YLD | Non – staining Leveling agent specially designed for Yarn Dyeing

• Product Information

  Nestogen – YLD  is an excellent Leveling agent designed for the application of disperses dyes to polyester fibres, especially in short cycle dyeing.

• Key Features & Benefits

  • Improves exhaustion of even the most difficult, high molecular size disperse dyestuffs.
  • No restraining action on exhaustion of disperse dyes, full yields are obtained in deep shades.
  • Helps compensate for lack of compatibility of dyes in mixtures, used because of economy or particular fastness properties.
  • Anionic chemical nature ensures compatibility with all commonly used polyester dyeing auxiliaries. No cloud point effect.
  • No formaldehyde content, no anti-foam content.

• Application

  [ I ].      Nestogen – YLD used as leveling agent in dyeing of Polyester Yarn :

  Nestogen – YLD is suitable for use on all types of high temp. dyeing machinery. After scouring the goods, the dye bath is set with fresh water and the temp. raised to 60deg. C.        

  Nestogen – YLD           :           0.5 to 1.0 gpl

  Proton LS-5*                 :           1.0 to 1.25 gpl

  Disperse Dyes              :           X %   ( O. W. F. )

  [ * Possess buffering, sequestering & dispersing action ]

  Add Nestogen – YLD to the bath together with other chemicals required and circulate.

  Adjust to pH 4.5 to 5.5.

  Add pre-dispersed dyestuffs, preferably through a sieve of filter.

  Raise temperature from 60deg. C to maximum dyeing temp. ( 130 -135 deg. C ) at desired temp. gradient. Rapid rates of rise of 2-4 deg. C per minute are possible.

  Run 30 – 60 minutes. Cool to temp. at which the liquor can safely be drained without causing creasing, then rinse or reduction clear if necessary.

  [ II ].     Nestogen – YLD used for re-leveling of faulty dyeing of Polyester Yarn:

           Nestogen – YLD can be used to correct the unlevel dyeing or to reduce the depth of dyeing dyed too heavily.

  Treat for 45-60 minutes with,

              Nestogen – YLD                       :           2 to 5 gpl

  At maximum dyeing temp. this treatment will hold the dye remove in the bath.

  If shade correction is necessary, these should be carried out after first replacing all or most of the bath. Re-leveling treatments should be followed by through rinsing and reduction clearing to ensure maximum fastness.

• Properties

  Appearance                              :           Clear Yellow Brown Liquid        

  Nature                                       :            Anionic                        

  Composition                             :           Proprietary anionic compound   

  Solubility                                   :           Readily soluble in water

  Stability to hard water              :           Good

  pH                                              :           6.5 ± 1