Patent

A method for increasing the stability of fluorescent whitening agent WO 2004050994 A1

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Publication Details

Author list: Engstrand, Per

Publication year: 2004

URL: http://google.com/patents/WO2004050994A1?cl=en&hl=sv


Abstract

The present invention relates to a method for increasing the stability of fluorescent whitening agent after its preparation and during its use either on its own or mixed with other chemicals. The method is characterised in that the whitening agent is supplied with an organic acid containing aromatic group and/or can be esterified internally forming lactone, or the salt of the acid (additive A) and reducing chemical (additive B).


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