Sika Technology Ag

Zimmer Gmbh

Sika Technologies Ag

Ivoclar Vivadent Ag

Jörg Zimmermann

Volker Rheinberger

Norbert Moszner

Ulrich Salz

Ueli Sulser

Frank Zeuner

Lukas Frunz

Jürg Weidmann

Ulf Velten

Katharina Landfester

Christina Hampel

Rosemary E Thompson

Andrew James Jukes

Patrick Juilland

Simone Klapdohr

Robert Flatt

Jabbar Al Shemari

Martin Liska

Benedikt Lindlar

Fabia Ulber

Jabbar Ai Shemari

Volker M Rheinberger

Annette Weinkauf

Markus Friederich

Jabbar Alshemari

Walter De Carvalho

Julien Gueville

Pierre Petriol

Loic Lorcet

Jürgen Gresser

Markus Müller

Joachim Glaus

Angela MÜCKE

Milan Kundra

Oscar Marazzini

Christopher Apeh

Stefan Obst

Michael Vorwerk

Jörg Vogelsang

Marissa Volz

Ulrich Ziener

Carsten Rieger

The use of branched copolymers of the general structure (I) as additives for increasing the flow rate and for reducing the viscosity of mineral binder compositions. Further, mineral binder compositions including at least one branched copolymer of the general structure (I):

Branched copolymers as additives for viscosity reduction of mineral binder compositions

The invention relates to the use of branched copolymers as dispersants of mineral binders, wherein the copolymers are formed from

Branched copolymers as dispersants for mineral binders

Methods for using a copolymer, especially as a dispersant for solid particles, in particular as a dispersant for mineral binder compositions, where the copolymer is obtained from ionizable monomers m1 and side chain-bearing monomers m2 that are polymerized by nitroxide-mediated solution polymerization to give the copolymer, wherein the polymerization is conducted in the presence of an agent including a carboxyl group-bearing and phosphated alkoxy amine.

Production of dispersants by nitroxide-mediated solution polymerization

The present invention relates to a copolymer, especially for use as a dispersant for solid particles, in particular for use as dispersant for mineral binder compositions, having a polymer backbone and side chains bonded thereto, comprising at least one ionizable monomer unit M1 and at least one side chain-bearing monomer unit M2, wherein the copolymer has a gradient structure in at least one section A in a direction along the polymer backbone with regard to the ionizable monomer unit M1 and/or with regard to the side chain-bearing monomer unit M2.

Copolymers having a gradient structure

The present invention relates to processes for preparing a copolymer, especially a dispersant for solid particles, in particular a dispersant for mineral binder compositions, wherein ionizable monomers m1 and side chain-bearing monomers m2 are polymerized by nitroxide-mediated solution polymerization to give a copolymer, wherein the polymerization is conducted in the presence of an agent comprising a carboxyl group-bearing and phosphated alkoxy amine.

The present invention relates to the use of a copolymer as a dispersant for binder compositions based on calcium sulfate, the copolymer having a polymer backbone and sidechains bound thereto, and at least one ionizable monomeric unit M1 and at least one sidechain-carrying monomeric unit M2, characterized in that the copolymer has, in a direction along the polymer backbone, a non-random distribution of the monomeric units M1 and/or of the monomeric units M2.

Dispersant for calcium sulphate-based compositions

A block copolymer for use as a dispersant for mineral binder compositions, containing an alkali activating agent. The block copolymer includes at least one first block A and at least one second block B, the first block A containing a monomeric unit M1 and the second block B containing a monomeric unit M2. A proportion of monomeric units M2, if any, in the first block A is less than 25 mol %, in particular less than or equal to 10 mol %, relative to all the monomeric units M1 in the first block A, and a proportion of monomeric units M1, if any, in the second block B is less than 25 mol %, in particular less than or equal to 10 mol %, relative to all the monomeric units M2 in the second block B.

Block copolymers as dispersants for alkali-activated binders

A copolymer as dispersant in a binder composition comprising an alkaline activating agent, wherein the activating agent is especially suitable for activation of a latently hydraulic and/or pozzolanic binder, wherein the copolymer has a polymer backbone and side chains bonded thereto and comprises at least one ionizable monomer unit M1 and at least one side chain-bearing monomer unit M2, and wherein the copolymer has a gradient structure in at least one section A in a direction along the polymer backbone with regard to the ionizable monomer unit M1 and/or with regard to the side chain-bearing monomer unit M2.

Copolymers having a gradient structure as dispersant for alkalinically activated binding agents

A block copolymer, in particular for use as a dispersant for mineral binder compositions, including at least one first block A and at least one second block B, wherein the first block A has a monomer unit M1 and the second block B has a monomer unit M2. To this end a proportion of monomer units M2 which is in any case present in the first block A is less than 25 mol %, in particular less than or equal to 10 mol %, based on all the monomer units M1 in the first block A and a proportion of monomer units M1 which is in any case present in the second block B is less than 25 mol %, in particular less than or equal to 10 mol %, based on all the monomer units M2 in the second block B.

Block copolymer

The present invention relates to admixtures, especially a dispersant for solid particles, in particular a dispersant for mineral binder compositions, comprising:

Additive containing a superplasticizer and a copolymer

The present invention relates to a copolymer, especially for use as a dispersant for solid particles, in particular for use as dispersant for mineral binder compositions, having a polymer backbone and side chains bonded thereto, comprising at least one ionizable monomer unit Mand at least one side chain-bearing monomer unit M, wherein the copolymer has a gradient structure in at least one section A in a direction along the polymer backbone with regard to the ionizable monomer unit Mand/or with regard to the side chain-bearing monomer unit M

A comb polymer is used for increasing the flow rate and/or reducing the viscosity of a mineral binder composition, where the comb polymer has a main chain including acid groups and there are pendent chains linked to the main chain, and where the average number-average molar mass of all of the pendent chains is from 120 to 1000 g/mol and the molar ratio of the acid groups to the side chains is in the range from 0.5 to 2.

Use of comb polymers for controlling the rheology of mineral binder compositions

A cemented tibial prosthesis having a bone-contacting surface with a porous outer rim. With the bone-contacting surface seated against a resected proximal tibia, bone cement or another suitable adhesive will travel into the pores of the porous outer rim to enhance the connection between the tibial prosthesis and the tibia.

Tibial component with enhanced radial cement fixation

A comb polymer and use thereof for improving the processing of hydraulically setting compositions. The comb polymer has ester, amide and/or ether groups on side chains bound to a main chain and the main chain has at least one acrylic acid unit A or a salt thereof and at least one methacrylic acid unit M or a salt thereof. Processes for producing a hydraulically setting composition with longer processing time.

Additive for hydraulically setting systems with improved processing

The invention relates to the use of at least one comb polymer which includes side chains which have at least one cationic group, and does not include side chains having polyether groups, and which has a main chain which has carboxyl groups, as dispersant for hydraulically settable compositions. The invention also relates to hydraulically settable cement compositions, moldings, comb polymers and method for producing comb polymers.

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Winterthur, Switzerland

Jörg Zimmermann