Byk-chemie Gmbh

Sandra O'Shea

Jürgen Omeis

Wolfgang Pritschins

Frederik Piestert

Sabine Johann

Bernd Göebelt

Marcel Krohnen

The invention relates to a wetting and dispersing agent that can be produced by carrying out step (1): wherein a) an organic polymer containing primary and/or secondary amino groups and b) at least one branched polyhydroxymonocarboxylic acid comprising, in addition to a carboxyl group, at least two hydroxy groups, one of which is not bound to the main chain of the molecule, are reacted by condensation reactions, forming amide linkages; and step (2): wherein at least some of the hydroxy groups of the hydroxy-functional reaction product obtained in step (1) are reacted with at least one organic monoisocyanate, forming urethane linkages.

Wetting and dispersing agent, production method and use thereof

The invention relates to compositions comprising two structured linear copolymers selected from the group consisting of block copolymers and gradient copolymers, these copolymers being prepared by different controlled polymerization techniques and the difference in the polydispersities of these copolymers, &#x394;(M/M), being &#x2267;0.25. The invention further relates to the production of such blends and to their use as wetting agents and dispersants.

Wetting agents and dispersants based on mixtures of structure copolymers

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Gladbeck, Germany

Sandra O'Shea