Clariant International Ltd

Rolic Ag

Archroma IP Gmbh

Clariant Finance (bvi) Limited

Frederic Reveaud

Cedric Klein

Andrew Clive Jackson

David Puddiphatt

Frederic Lincker

David Atkinson

Cédric Klein

David Atkonson

New dichroic dyes having a composition with slave materials. The dyes may be used for a dichroic polymer network, a dichroic liquid crystalline polymer film (LCP film) or a dichroic liquid crystalline polymer gel, which for instance find application as electro-optical or optical devices.

Polymerizable dichroic dyes

Concentrated storage stable aqueous solutions (S) comprising components (a), (b) and (c), wherein component (a) is at least one optical brightening agent of formula (1), in which the anionic charge on the brightener is balanced by a cationic charge composed of one or more cations selected from the group consisting of hydrogen, alkali metal cation, alkaline earth metal cation, ammonium, ammonium which is mono-, di- or trisubstituted by a Clinear or branched alkyl radical and ammonium which is mono-, di- or trisubstituted by a Clinear or branched hydroxyalkyl radical, and the concentration of component (a) is 0.08 to 0.3 mol per kg, based on the total weight of the concentrated storage-stable aqueous solutions (S), component (b) is at least one inorganic salt (SA), in a concentration of 2 to 15% by weight, based on the total weight of the concentrated storage-stable aqueous solutions (S), and component (c) is water, in a concentration of 10% to 88% by weight, based on the total weight of the concentrated storage-stable aqueous solutions (S).

Concentrated storage-stable aqueous optical brightening solutions

The instant invention relates to novel water soluble bis-(triazinylamino)-stilbene optical brightening agents, a process for their preparation and their use for whitening natural and synthetic materials.

Bis-(triazinylamino)-stilbene derivatives

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Mulhouse, France

Frederic Reveaud