UREA (CODE 2015)
UREA
* UREA IS WIDELY USED WHEN DYEING PROCION OR ACID DYES IN SMALL QUANTITIES OF WATER OR WHEN PRINTING OR PAINTING WITH PROCION OR ACID DYES.
* THE EFFECT OF THE UREA IS TO INCREASE THE SOLUBILITY OF THE DYES IN WATER AND THEREBY ENHANCE THE BRIGHTNESS AND INTENSITY OF THE DYES USED.
* AN ADDITIONAL PROPERTY OF UREA IS THAT IT RETAINS MOISTURE EVEN WHEN DRIED AND THIS BOOSTS THE COLOUR YEILD OF THE DYE DURING THE FIXING STAGE.
* UREA IS NOT NORMALLY USED WHEN DYEING IN LARGE QUANTITIES OF WATER.
| * RELEVANT LITERATURE: | COLOURATION OF COTTON BOOKLET |
| COLOURATION OF SILK BOOKLET | |
| COLOURATION OF WOOL BOOKLET | |
| PR21, PR22, PR23, PR24, PR25. |
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