Reactive dyebath additive:potassium silicate and potassium hydroxide
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United States of America Patent
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Sep 7, 1993
Grant Date -
N/A
app pub date -
Mar 12, 1992
filing date -
Mar 12, 1991
priority date (Note) -
Expired
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Abstract
A fabric is dyed with a reactive dye in the presence of an alkali donor, added to the dyebath. The alkali donor is a liquid composition comprising potassium silicate and potassium hydroxide. A composition suitable for use as such an alkali donor comprises, by weight of the total weight of the composition, 20-75% potassium silicate, 10-35% of solid potassium hydroxide, and up to 20% sequestrant, the balance comprising water.
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