Preparation of Dispersion

The required amount of White R Liquid is weighed out and stirred with 20times of its weight of soft water at room temperature. The required volumes are made up by adding more softwater.

 

High- temperature Method

The bath is prepared with 0.1-0.35% White R Liquid 1.0g/l Suitable dispersing agent pH 4.5-5.5 with acetic acid material to liquor ratio 1:10. The material is entered at about 50ºC and the temperature is slowly raised to 130ºC within 45-60mins. The treatment is continued at this temperature for about 30-45minutes. The material is then washed in cold water and soaped at 60ºC – 70ºC for 10-15mins in 2g/l neutral detergent.

 

Pad Method

 

Padding:The fabric is padded through a paid-liquor contining 1-5g/l White R Liquid at room temperature at pH 4.5 with Acetic Acid keeping 60-80% expression. The padded fabric is dried at approximately 100ºC and then cured at 180ºC to 210ºC for 20second for fixations.

 

However, the following fixation conditions may be taken as general recommendations:


-For normal polyester & polyester/cotton : 180ºC – 185ºC for 10-15 seconds
-For texturised polyester: 170ºC – 180ºC
-The thermo fixed material may be given rising and light soaping \ treatment with 2g/l neutral detergent at 60ºC – 70ºC for 10-15minutes

Note:

The recommendation is based on laboratory experiments ans to be considered as guidelines only. For bulk production, it is necessary to carry out small scale trails to conform the local conditons.

 

Storage & Handling Precautions:


-Store in a cool/dry place
-Avoid storing in direct sunlight
-The shelf life of White R Liquids is one year, if storage below 30ºC
-The usual storage, handling & safety precautions should be observed

 

The fastness properties were tested on polyester with 5g/l White R Liquid by Pad-thermosol Method. The figures give the information on change in the whiteness.

 

Light

5-6

Washing

5

60ºC (test 3)

5

95ºC (test 4)

4-5

Perspiration: alkaline

5

Acidic

5

Dry Cleaning

4

Dry-heat pleating: mild 180ºC

5

Severe (210ºC)

4-5

Water

4-5

Sea Water

4-5

Hypochlorite bleaching

4-5