PRODUCT LITERATURE

NYLOFIX-993

(Dyefixing Agent & Acid Stable Dyefixing Agent)

Product Information

Nylofix-993 is a low dusting powder dyefixing agent for acid and metal complex dyed / printed polyamide and their blends. It is readily soluble in water. After treatment with Nylofix-993 improves wet fastness properties. It is also reserving agent for dyeing of polyamide fibres with acid and metal complex dyes.

Key Features & Benefits

General Characteristics

Application

I.Exhaust application to improve wet fastness of Polyamide

Nylofix-993 is added to the bath containing approximately 1% acetic acid and other auxillaries. Treatment to be carried out for 20 min at 50-60 deg.C before adding dye and then dyeing to be carried out. The concentration of Nylofix-993 depends on type of dye and depth of shade, dyeing method and fibre blends. Generally, more quantity of Nylofix-993 is required for high dye affinity and pale shades and less quantity is required for darker shades.

III.Exhaust application for Nylon / Cellulose blend for solid shade

Nylofix-993 is added to the dyebath to prevent staining of nylon fibre with direct dyes depending on the depth of shade.

Precautions:

Nylofix-993 should not to be mixed in concentrated form (e.g. in preparation tanks) with acids as this could cause precipitation. Any precipitate formed, however, can be re-dissolved with a little ammonia.

Aftertreatment is recommended in a fresh bath.

Note :

1.The handle of the fabrics may change slightly (becoming firmer, fuller), depending on the amount of Nylofix-993 used, the fabric construction, and the temperature during drying or post-setting.

2.The optimum concentration of Nylofix-993 can vary depending on type of polyamide. Generally, higher concentration are required for Nylon 6 than for Nylon 66. It is advisable to carry out the after treatment at 70 deg.C

The effects obtained by after treating with Nylofix-993 are stable to dry heat at the usual setting temperatures, but can be impaired by intense pressure steaming. Increasing the amount of Nylofix-993 will often improve the stability of the dyefixation to steaming. Polyamide material treated with Nylofix-993 is difficult to re-dye or over-dye. Nylofix-993 should therefore be stripped first before redyeing.

2 g/l ammonia 24%

2-3 g/l detergent

Run for 10-20 minutes at 80-90 deg.C followed by rinsing.

Instructions For Dilution

Procedure to prepare 35% Nylofix-993

-Take 65 parts of DM water at room temperature or 60-80 deg.C

-To this, gradually add 35 parts of Nylofix-993 with constant stirring.

-Continue stirring for 30 min to obtain homogeneous product.

Note:

- Apprearance of solution may change from yellow to brown on storage

- If solution to be stored at freezing temperature than 5-10% diethylene glycol is recommended

It is recommended to add 0.1% Bronopol (2-Bromo,2-nitropropane, 1,3-diol) or Methyl Paraben (methyl para hydroxy benzoate) as an antimicrobial agent to avoid fungal / microbial growth.