Basf Aktiengesellschaft

Basf Se Corporation

Thomas Steinmacher

Hermann Seyffer

Carmen-Elena Cimpeanu

Vijay Immanuel Raman

Volker Schaedler

Dieter Distler

Anja Song

Philipp Zacharias

Titus Leman

Petra Schoecker

Joerg Claussen

Norbert Gispert

Jens Utecht

Jörg Claussen

Petra SCHÖCKER

A paper coating slip additive obtainable by free-radical polymerization, its preparation and its use in paper coating compositions are described. The additive is formed from (a) acid monomers selected from ethylenically unsaturated C3 to C8 carboxylic acids, (b) associative monomers of the general formula HC&#x2550;CR&#x2014;COO-(EO)&#x2014;(PO)&#x2014;Rwhere Ris hydrogen or methyl, n is at least two, m is from zero to 50, EO is an ethylene oxide group, PO is a propylene oxide group and Ris a C8-C30 alkyl group or a C8-C30 alkaryl group, and (c) nonionic copolymerizable monomers other than a) and b), wherein said additive has a weight average molecular weight of below 200 000 and wherein tert-dodecyl mercaptan is used as chain transfer agent.

Paper coating slip additive comprising acid monomer, associative monomer and nonionic monomer

A paper coating slip containing a mineral pigment and an aqueous polymer dispersion as a binder, wherein the polymer dispersion is obtainable by emulsion polymerization of ethylenically unsaturated compounds (monomers) and the paper coating slip gels at above 35&#xb0; C., i.e. the viscosity of the paper coating slip at from 35 to 60&#xb0; C. is at least twice the viscosity at 30&#xb0; C.

Paper coating slurries for cast coating

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Obersulm, Germany

Thomas Steinmacher