Basf Aktiengesellschaft

Johannes Dobbelaar

Reinhard B&auml;cher

Gerhard Bauer

Robert Rupaner

Wolfgang H&uuml;mmer

Sven Lawrenz

Gerhard Auchter

Bernhard Schuler

Johannes T&uuml;rk

Rik Noordijk

Franz-Josef Mueseler

Gerd Rehmer

Peter Keller

Roland Baumstark

Martin Meister

Wolfgang Hubinger

J&uuml;rgen Nahstoll

Rolf Dersch

Josef Neutzner

Claudia Wood

Uwe Dittrich

Bernd Stanger

Michael Melan

Stefan Kirsch

Joachim Krobb

Bradley Ronald Morrison

Binnur Gunesin

Wolfgang H&uuml;binger

Claudia Heibel

Werner Kirchner

Gerhard Schumacher

J&uuml;rgen Hartmann

Christian-Ulrich Schmidt

Jurgen Nahstoll

Rainer Wunder

Axel Ferber

Pressure sensitive adhesives based on polymers of multistage construction

Binder formulations based on aqueous polymer dispersions having a minimum film-forming temperature of below 10&deg; C. and comprising at least one binder polymer P in the form of an aqueous dispersion comprising at least one anionic emulsifier and at least one nonionic emulsifier.

Binder formulations based on aqueous polymer dispersions

A process is described for reducing the residual monomer content in a liquid solution, mixture, melt, suspension or dispersion of a polymer by postpolymerization with addition of a redox initiator system at a reaction temperature appropriate to it and with an extremely short mixing time of the liquid system in the production reactor by metering&mdash;gradually, in portions or continuously&mdash;at least one of the redox initiator components required to initiate polymerization of the residual monomers over a period (metering time) which is from about 10 to 250 times the mixing time of the liquid system in said reactor.

Method for reducing residual monomers in liquid systems by adding an oxidation-reduction initiator system

A process is described for effectively reducing the residual monomer content of an aqueous polymer dispersion by aftertreatment at atmospheric pressure or above with an initiator system comprising a) a hydroperoxide, hydrogen peroxide or a peracid, and b) an &agr;-hydroxy carboxylic acid, such as tartaric acid, or with a salt thereof.

Method of reducing the content of residual monomers in aqueous polymer dispersions

Method for reducing the quantity of residual monomers in aqueous polymeric dispersions

Pressure sensitive materials based on a multistep constituted of polymerizates

At least one single-stage or multistage stirrer which produces not only a tangential flow component but also an axial flow field is used in a stirred-vessel reactor in connection with the preparation of polymers by liquid phase polymerization.

Use of a single-stage or multistage stirrer to prepare polymers

Pressure-sensitive materials with small amounts of styrene

A method of emptying vessels containing dispersions, solutions or suspensions of polymers in which during the emptying process the liquid medium also used to take up the polymers into the dispersion, solution or suspension is passed into the space within the vessel that is not filled by the solution, dispersion or suspension, wherein the liquid medium used to take up the polymers into the dispersion, solution or suspension is introduced in vapor form.

Method of preventing or reducing formation of polymeric deposits in vessels during emptying

The process of the present invention for removing residual volatiles from polymer dispersions by performing first chemical deodorization using an initiator to remove residual monomers and then physical deodorization to remove volatile constituents comprises conducting the chemical deodorization for as long as the decrease in monomers is greater than the increase in secondary components introduced into the dispersion by the initiator, to result reliably in polymer dispersions having a residual volatiles content of less than or equal to 100 ppm.

Removing residual volatiles from polymer dispersions

A process for deodorizing and subsequently cooling dispersions or liquids comprising

Process for cooling dispersions and liquids

Polymer prepared by anionic polymerization and having a number average molecular weight of from 300,000 to 10,000,000 contain, as components,

Plastisols containing anionic polymers

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Wachenheim, Germany

Johannes Dobbelaar