Clariant Finance (bvi) Limited

Sandoz Gmbh

John Martin Farrar

Andrew Clive Jackson

Alec Stewart Tindal

Margaret Mahon

Mark David Graham

Jurg Heller

John Stuart Cowman

Hans-Rudolf Schmid

Martin Oberholzer

David L Connell

Jacqueline A Coates

Margaret H, Graham

Mark D Graham

Neil Mackinnon

The instant invention relates to storage stable solutions of optical brighteners based on certain salt forms of anilino-substituted bistriazinyl derivatives of 4,4'-diaminostilbene-2,2&#x2032;-disulphonic acid and of organic acids which do not need extra solubilizing additives.

Storage stable solutions of optical brighteners

The instant invention relates to storage stable solutions of optical brighteners based on certain salt forms of anilino-substituted bistriazinyl derivatives of 4,4'-diaminostilbene-2,2&#x2032;-disulphonic acid which do not need extra solubilising additives.

Optical brighteners (P) of formula wherein

Optical brighteners their composition their production and their use

Water soluble, amphoteric optical brighteners (W) comprising at least one brightener-characteristic radical X which contain at least one anionic substituent and covalently linked over at least one tertiary amino group Z to at least one non-chromophoric, essentially aliphatic, polyquaternary ammonium-hydrocarbon radical Y containing more than one quaternary ammonium group and in which each hydrocarbon radical is optionally interrupted by and/or substituted with one or more further heteroatoms, have surprising brightening properties, especially in papermaking, and in the form of their aqueous solutions are of notable stability.

Amphoteric optical brighteners, their aqueous solutions, their production and their use

Cationically modified white pigments (W) in particulate form, essentially consisting of a particulate inorganic white pigment (M) of a particle size in the range of 0,1 to 40 &#x3bc;m and an applied water soluble, cationic, crosslinked polymer (P) containing quaternary ammonium groups in salt form, obtainable by reaction of epichlorohydrin or of epichlorohydrin derivatives or precursors with amines, under conditions leading to at least partial crosslinking, optionally in combination with an anionic optical brightener (B) and where the molar ratio of (B) to (P) is such that the number of cationic charges of the total polymer (P) is higher than the number of anionic charges of the total anionic optical brightener (B), are surprisingly useful as cationic white pigments in various fields of technique, especially in papermaking.

Cationically modified white pigments, their production and use

The invention relates to an optical brightener mixture (W) comprising optical brighteners (A) of formula (Ia), and (B) of formula (Ib) and optionally (C) of formula (Ic) as defined herein, their concentrated aqueous solutions (S), their production and their use.

Optical brighteners compositions their production and their use

Polycationic polyquaternary products as defined in Claim 1 are useful as adjuvants in paper-making, especially as fixatives in the production of paper from coated broke.

Polycationic polymers, their production and use

Aqueous solutions of polycationic polymers (P ) containing quaternary ammonium groups in salt form as heteroatomic chain members or ring members of the polymer, wherein a part of the counter-ions to the quaternary cationic groups are anionic groups of anionic optical brighteners, containing at least one anionic group, are valuable multi-functional agents in papermaking.

Polycationic polymer salts, their production and use

Optical brightening agents

An aqueous, isotropic liquid detergent composition comprising an aqueous solution of:

Detergent compositions containing an anionic surfactant and a

A fluid loss additive for oil-based well-working fluids, the fluid loss additive comprising

Fluid loss-reducing additives for oil-based well working fluids

Compounds of formula I ##STR1## can be used as optical brighteners.

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Leeds, United Kingdom

John Martin Farrar