Light-collecting systems and the use of coumarin derivatives as

Liquid detergent compositions containing disulfonated fluorescen

Liquid detergents compositions containing 2-2-dichloro-5,5-disul

Method for the treatment of textile fibers

Mixture of benzoxazole derivatives

Mixtures of fluorescent whitening agents

Mixtures of fluorescent whitening agents

Mixtures of fluorescent whitening agents

Mixtures of fluorescent whitening agents

Mixtures of fluorescent whitening agents

Mixtures of fluorescent whitening agents

Mixtures of optical brighteners

Mixtures of optical brighteners

Mixtures of optical brighteners

Mixtures of optical brighteners

Mixtures of optical brighteners

Mixtures of optical brighteners

Mixtures of optical brighteners

Mixtures of optical brighteners and their use

Mixtures of optical brighteners and their use for the optical br