Basf Aktiengesellschaft

Stephan J&uuml;ngling

Hermann Gausepohl

Volker Warzelhan

Christian Schade

Graham Edmund Mc Kee

Wolfgang Fischer

Philippe Desbois

Michael Fischer

Bardo Schmitt

Joachim Queisser

Gerrit A Luinstra

Horst Weiss

Rainer Moors

Alain Deffieux

Christof Mehler

Michel Fontanille

Susanne Steiger

Axel M&uuml;ller

Helmut Schlaad

Hansj&ouml;rg Sch&auml;ch

J&uuml;rgen Demeter

In a process for polymerizing dienes in a solvent comprising vinylaromatic monomers, the polymerization is carried out in the presence of a metal compound of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo or W as catalyst and a Lewis acid as cocatalyst and, if desired, an alkylating agent and, if desired, a regulator. This process can be used for preparing high-impact polystyrene, acrylonitrile-butadiene-styrene copolymers or methyl methacrylate-butadiene-styrene copolymers.

Method of producing rubber compositions in styrene solutions with sterically superior chelate catalysts

A process for preparing a solution of high molecular weight polymers of conjugated dienes in a vinylaromatic hydrocarbon by anionic polymerization of the diene in the presence of an alkyllithium as catalyst and a process for preparing impact-modified polymers of vinylaromatic compounds is described. The first process comprises firstly polymerizing the diene in solution in an aromatic hydrocarbon which is free of ethylenic double bonds to a molecular weight below about 10 , then adding a trialkylaluminum in a molar excess relative to the alkyllithium, diluting the solution obtained with the vinylaromatic compound and then coupling the polydiene with a polyepoxide or an alkyl (meth)acrylate to give a high molecular weight polymer. The solution obtained in this way is further processed to give an impact-modified polymer of a vinylaromatic hydrocarbon by polymerizing the solution prepared as described, if desired after addition of further amounts of a vinylaromatic compound, in a manner known per se.

Method for producing a solution of diene polymers in vinyl aromatic compounds and method for producing resistant vinyl aromatic polymers by polymerizing the same solution

Disclosed are a process for the preparation of an initiator composition comprising an alkali metal organyl and an aluminum organyl and a process for the polymerization of anionically polymerizable monomers.

Method for the production of an initiator composition for retarded anionic polymerization

Method for preparing polyacryl(meth)acrylates

Anionic polymerization is used for the preparation of reaction mixtures comprising homopolymers, copolymers or block copolymers, and of homopolymers, copolymers and block copolymers which comprise acrylates or methacrylates or acrylates and methacrylates, wherein olefinically unsaturated compounds which are not acrylate or methacrylate derivatives are employed as solvent or as solvent component.

Anionic polymerization of acrylates and methacrylates

Process for preparing rubber-modified moulding compounds

Growing community of inventors

Mannheim, Germany

Stephan Jüngling

Growing community of inventors

Mannheim, Germany

Stephan J&uuml;ngling

Stephan Jüngling