Sika Technology Ag

Sika Ag, Vorm. Kaspar Winkler & Co.

Sika Schweiz Ag

Other

Sika Ag, Vormals Kaspar Winkler & Co.

Sika (china) Ltd.

Sika Corporation

Ueli Sulser

Ulf Velten

Lukas Frunz

Jörg Zimmermann

Franz Wombacher

Christian Bürge

Jurg Widmer

Christina Hampel

Irene Schober

Theodor A Burge

Jabbar Al Shemari

Anna Krapf

Theodor A B&uuml;rge

J&uuml;rg Widmer

Anna Krapf-Huber

Norman Blank

Beat Marazzani

Christophe Kurz

Urs Mäder

Gilbert Mäder

Jürg Widmer

Joerg Zimmermann

Christian Buerge

Gerhard Leu

Arnd Eberhardt

Dieter Honert

Robert Flatt

Michael Wernher Danzinger

Theodor A Bürge

Urs Maeder

Oliver Blask

Jürgen Gresser

Jennifer Liu

Gilbert Maeder

J Urg Widmer

Anna Huber

Delphine Marchon

Heinz Goeth

Lutz D Zabel

Burkhard Müller

Michael Danzinger

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

Comb polymers having carboxyl/carboxylate and ester groups, containing a) 0.1-0.9 mol fractions of a partial structural unit S1, which is derived from an acrylic/methacrylic or maleic acid unit, b) 0-0.4 mol fractions of a partial structural unit S2, which is derived, for example, from an acrylic/methacrylic or maleic acid unit, which is esterified by means of a Cto C-alkanol or a polyalkylene glycol, alkyl-capped on one end, preferably a polyethylene glycol, and c) 0.1-0.4 mol fractions of a partial structural unit S3, which is derived from an acrylic/methacrylic or maleic acid unit, which is esterified by means of a polyalkylene glycol monoalkyl ether, which has a terminal, secondary hydroxyl group of the form-CH(R)OH, wherein Ris bulky alkyl group, preferably a methyl group.

Comb polymers with delayed alkaline hydrolysis

A copolymer, in particular a dispersing agent for hydraulically setting systems, includes at least three structural units S1, S2, S3 and optionally a further structural unit S4.

Dispersant for hydraulically setting systems

A comb polymer that is a dispersant in a binder composition includes an alkaline activating agent, wherein the activating agent is intended for activation of a latently hydraulic and/or puzzolanic binder, and wherein the comb polymer has a polymer backbone formed from a plurality of backbone monomers and a plurality of polymeric side chains each formed from a plurality of side chain monomers and bonded thereto, and wherein at least some of the backbone monomers have one or more ionizable groups, and features a structure constant K of the comb polymer, defined as K=[(N&#x2212;1)z]/nPN&#xd7;10, at least equal to 70, where n is the average number of side chains per comb polymer molecule, N is the average number of backbone monomers per side chain, P is the average number of side chain monomers per side chain, and z is the average number of ionizable groups per side chain-free backbone monomer.

Comb polymers as dispersants for alkaline activated binders

A polymer having the formula (XIV) as a dispersing agent for powder-form substances, typically selected from the group consisting of clays, porcelain slip, silicate flour, chalk, carbon black, rock flour, pigments, talc, plastic powders and mineral binders, and methods for improving the flow properties of powder-form substances and mixtures including powder-form substances and polymers having the formula (XIV).

Dispersing agent for solid suspensions

The invention relates to comb polymers made from maleic acid or derivatives thereof, allyl ethers, and vinyl acetate, and the preparation thereof by free-radical polymerization at a reaction temperature of 10&#xb0; C. to 50&#xb0; C. The invention relates further to the use of such comb polymers to improve the workability of hydraulically setting compositions.

Polymer made from maleic acid, allyl ether, and vinyl acetate and the preparation and use of said polymer

The invention relates to a mono-substituted phosphinic acid and to the use thereof as a regulator in radical polymerization. Such regulators do not result in the formation of poorly soluble salts, and in addition, the polymers produced with the regulators according to the invention are characterized by a uniform polymerization degree having a narrow size distribution. In addition, the invention relates to a method for producing such mono-substituted phosphinic acids.

Regulator molecule

The invention relates to comb polymers of maleic acid or derivatives thereof, allyl ethers and (meth)acrylic acid or derivatives thereof, and to the preparation thereof by free radical polymerization at a reaction temperature of 10&#xb0; C. to 50&#xb0; C. The invention further relates to the use of such comb polymers for improving the processability of hydraulically setting compositions.

Polymer of maleic acid, allyl ether and (meth)acrylic acid compounds, and preparation and use thereof

Polymers P as dispersants, in particular as liquefiers, for hydraulically setting systems, and hydraulically setting systems including the polymer P. The polymer P includes at least one acid unit, at least one ester unit, and at least one unit containing terephthalate or naphthalate.

The invention relates to additives for hydraulic binders and systems produced from them, such as concrete and mortar. In particular, the present invention relates to a setting and hardening accelerator for hydraulic binders produced by means of reaction of a calcium compound CV with a silicon compound SV and addition of a phosphonic acid derivative, as well as its production.

Accelerator for hydraulic binders

The present invention relates to polymers P as dispersants, in particular as liquefiers, for hydraulically setting systems, and hydraulically setting systems comprising the polymer P. The polymer P comprises at least one acid unit, at least one ester unit, at least one unit containing a tetrahydrofurfuryl group, and optionally at least one amide unit.

Dispersants for hydraulically setting systems

This disclosure relates to stabilizing polycarboxylates, such polycarboxylate ethers, in a presence of an inorganic powder at an elevated temperatures by using at least one antioxidant.

Method for stabilizing polycarboxylates

A polymer P as a dispersant for gypsum compositions, as well as gypsum compositions including the polymer P. The polymer P includes at least one acid unit and at least one long side chain with a molecular weight of at least 1800 g/mol, including polyoxyalkylene groups, and has an acid content of 1.5 to 4 acid groups per gram of polymer.

Dispersing agents for gypsum plaster compositions

The present invention relates to emulsifying polymers, in particular to the use of these polymers for the stable emulsification of hydrophobic additives in aqueous concrete plasticizers.

Emulsifying polymers and their use

A process for preparing a polymer P having amide and ester groups in the solid state of aggregation, comprising (a) reacting a homo- or copolymer P1 of (meth)acrylic acid, itaconic acid or crotonic acid with at least one monohydroxy compound E at a temperature up to 200&#xb0; C. to give a polymer P2, so that anhydride groups form in addition to ester groups, (b) cooling the polymer P2 prepared in step (a) being cooled to below 60&#xb0; C. so that the polymer P2 is present in the solid state of aggregation or as supercooled melt, and (c) amidating the polymer P2 having anhydride groups and present in the solid state of aggregation or as supercooled melt with at least one amine compound A at temperatures below 60&#xb0; C., the amine compound A used in step (c) being present in the solid state of aggregation or on or in a solid carrier material.

Process for producing polymers having amide and ester groups in the solid state

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Unterengstringen, Switzerland

Ueli Sulser