Basf Se Corporation

Philipp Zacharias

Hermann Seyffer

Vijay Immanuel Raman

Ilshat Gubaydullin

Sophia Ebert

Yuzhuo Li

Yongqing Lan

Carmen-Elena Cimpeanu

Mario Brands

Harutyun Hanciogullari

Anja Song

Marc Bothe

Thomas Steinmacher

Petra Schoecker

Joerg Claussen

A process for removing a bulk material layer from a substrate and planarizing the exposed surface by CMP by (1) providing an CMP agent exhibiting at the end of the chemical mechanical polishing, without the addition of supplementary materials, the same SER as at its start and a lower MRR than at its start, &#x2014;an SER which is lower than the initial SER and an MRR which is the same or essentially the same as the initial MRR or a lower SER and a lower MRR than at its start; (2) contacting the surface of the bulk material layer with the CMP agent; (3) the CMP of the bulk material layer with the CMP agent; and (4) continuing the CMP until all material residuals are removed from the exposed surface; and a CMP agent and their use for manufacturing electrical and optical devices.

Process for removing a bulk material layer from a substrate and a chemical mechanical polishing agent suitable for this process

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

As associative thickener obtainable by free radical polymerization, the preparation thereof and the use thereof in paper coating slips are described. The associative thickener is formed from (a) acid monomers selected from ethylenically unsaturated C- to C-carboxylic acids, (b) associative monomers of the general formula HC&#x2550;CR&#x2014;COO-(EO)&#x2014;(PO)&#x2014;R, in which Ris hydrogen or methyl, n is a number of at least two, m is a number from zero to 50, EO is an ethylene oxide group, PO is a propylene oxide group and Ris a C-C-alkyl group or a C-C-alkaryl group, and (c) nonionic, copolymerizable monomers differing from a) and b), the reaction product having been reacted, after the polymerization, with initiators forming nonionic radicals.

Associative thickener comprising acid monomer, associative monomer and nonionic monomer

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Mannheim, Germany

Philipp Zacharias