Product Advantages Wide product range. Good fastness properties. Diverse application. Excellent strength and gloss.

 General Behaviour of cyanuric chloride based ICHOFIX^® Dyes

Dye Stability/Water Quality Instructions :

ICHOFIX^® Dyes Powder : Store in cool and dry place as exposure to hot humid conditions promotes deterioration. Close the containers tightly.

High temperatures and alkaline pH conditions rapidly reduce the stability of ICHOFIX^® 'M' Dye solutions. Keep cold solutions for not more than one day. Add selective alkali only when required. ICHOFIX^® 'H" and 'HE' Dye solutions are much less sensitive and have good stability.

Use soft or softened water where possible. Avoid alkalinity when dissolving. Hard water requires sequestration with Sodium Hexametaphosphate

Dissolving :

(a) Feed the dye powder steadily into the vortex created by a high-speed stirrer running in water at a temperature not higher than 50°C for ICHOFIX^® 'M" Dyes, 80°C for ICHOFIX^® 'H' & 'HE' Dyes, or

(b) Paste the dye powder with cold water and dissolve by adding water at the temperature indicated in (a).

Do not attempt to dissolve ICHOFIX^® dyes together with dyeing assistants or auxiliary products. Where the solubility limits of the dyes (see table in pattern pages) are exceeded, satisfactory solutions can be produced by additions of urea. Where necessary dry-mix the urea with the dye powder before pasting with water at 60°C.

The temperature of the final solution when using a maximum of 200 parts of urea per 1000 of water will fall to approximately 25°C owing to the endothermic dissolution of the urea.

Preparation of Goods for Dyeing :

Desize where necessary and scour; ICHO Dyes react with starches and gelatine.

With bleached goods, eliminate residual chlorine or peroxy-compounds before dyeing.

Goods prepared for dyeing must be free from alkali, where necessary, treat them in a liquor containing 0.5 1.0 part of acetic acid (90%) per 1000 parts of water prior to adding dye solution. This prevents premature localize fixation and improves leveling with ICHOFIX^® 'M' Dyes on difficult substrates.

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 ICHOFIX^® 'M' Dyes


Note : In Machinery with a high rate of liquor exchange, e.g. many modern package dyeing machines and most atmospheric jet dyeing machines and modern winches, it may often be possible to shorten this method by adding the salt more quickly or even by starting with all the salt present.

Standard Method : Salt and Alkali Requirements :

Depth of Shade (% on weight of goods)	Salt (gms/I)	Soda Ash (gms/l)
		L : R	L : R	L : R
		15 : 1	20 : 1	30 : 1
Upto 0.5	25	5	3	2
0.51 – 2.0	35	5	4	2
2.01 – 4.0	45	10	8	4
Above 4.0	55	15	10	5

Standard Method : Salt and Alkali Requirements :

For maximum fastness it is necessary to wash off efficiently

Minutes	Drop dyebath
10	Rinse cold
10	Rinse cold
15-30	'Soap' at the boil. For heavy shades two 15 min. 'Soaps' are preferred.
10	Rinse warm (50°C) Rinse cold until clear and soften if required.

Exhaust Dyeing : Jig

• Set the bath at 30-40°C
  
• Add dissolved dye over two ends
  
• Add salt over two ends
  
• Run for a minimum of 30 minutes (2 ends or more)
  
• Add alkali over two ends
  
• Run of a further 30-60 minutes (4 ends or more)
  
• Rinse thoroughly and wash off.

Jig Dyeing : Salt and Alkali Requirements

Depth of Shade (% on weight of goods)	Salt (gms/I)	40°C Soda Ash (gms/I)	60°C
			Sodium Bicarbonate (gms/I)	Soda Ash (gms/I)
Upto 0.5	25	5	2.5	2.5
0.51 – 2.0	35	10	5	5
2.01 – 4.0	45	15	7.5	7.5
Above 4.0	55	20	10	10

Preparation of Printing Paste with ICHOFIX^® 'M' Brand

ICHOFIX® Dyestuff	10-50	parts
Urea	40-50	parts
water	525-500	parts
Resist Salt	10	parts
Sodium Bicarbonate	10-15	parts

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Add finally made to 1000 parts with Sodium Alginate thickening or emulsion thickening.

First, Urea is dissolved in water at 40°C and then dyestuff is added and stirred to solution then resist salt is added and then thickening. This is stirred to homogenous paste and then bicarbonate is added just before printing. After printing goods are dried and then steamed in ager for 15 minutes and washed with cold water and soaped at boil, washed and dried. 'M' brand can be printed without steaming process. In this case goods are first padded with 3% soda ash and dried. Then printed as above, without use of bicarbonate. These are dried in hot humid atmosphere for not less than five hours, washed and soaped as usual.

ICHOFIX^® 'M' brand printing paste cannot be stored once bicarbonate is mixed. Paste however can be sorted for 3-4 days if alkali is not added.