Dyg viva 3

Low temperature dyeing of nylon 6 is carried out at ______degree Celsius.

• 50

• 55

• 60

• 65

Role of acid in nylon dyeing is as

• Exhausting agent

• Retarding agent

• Swelling agent

• Thermal stabiliser

Affinity of acid dye towards nylon in sequence

• Levelling dye > milling dye > super-milling dye

• Super-milling dye > milling dye > levelling dye

• Super-milling dye > milling dye > levelling dye

• Levelling dye > milling dye > super-milling dye

In nylon dyeing Acid dye form bonding with

• Carboxyl group

• Amino group

• Hydroxyl group

• All the above

During dyeing of nylon with milling dyes ________ is used in dyebath.

• Acetic acid

• Ammonium acetate

• Sulphuric acid

• Sodium chloride

The property of super milling dyes on nylon is

• Lesser fastness and lower affinity

• Lesser fastness and higher affinity

• Higher fastness and lower affinity

• Higher fastness and higher affinity

During dyeing of nylon with levelling dyes ________ is used in dyebath.

• Acetic acid

• Ammonium acetate

• Sulphuric acid

• Sodium chloride

What is the role of acid in the dyeing process of nylon?

• Exhausting agent

• Retarding agent

• Swelling agent

• Thermal stabiliser

Which type of dye is used for low temperature dyeing of nylon 6?

• Levelling dye

• Milling dye

• Super-milling dye

• Acid dye

What is required for dyeing with metal complex dye?

• UV treated water

• Chlorinated water

• Soft water

• Filtered water