Basf Aktiengesellschaft

Basfaktiengesellschaft

Guiscard Gl&uuml;ck

Klaus Hahn

Frank Braun

Franz-Josef Dietzen

Gerd Ehrmann

Roland Gellert

Isidoor De Grave

Martin Jochen Klatt

Knut Kaempfer

Hermann Tatzel

Dieter Naegele

Uwe Witt

Gerhard Alicke

Peter Barghoorn

Gerhard Turznik

Rainer Klostermann

Peter Dodel

Karlheinz Braun

The invention relates to expanded polypropylene beads having a density of from 5 to 200 g/l and a bead diameter of from 1 to 10 mm which comprise from 0.002 to 20% by weight of graphite particles.

Expanded polypropylene particles

Biologically degradable foamed material particles

The invention relates to a process for the drying of coagulated water-containing rubber particles. These are treated with an aqueous solution of any desired substances in monodisperse solution in water in such a way that, at least for some period, the surface of the rubber particles is completely covered by the aqueous solution. It is preferable to use an aqueous solution of substances selected from the group consisting of salts, alcohols, acids and sugars. This method can reduce the internal water content between the particles resulting from coagulation, without major usage of energy or time.

Drying of coagulated water-containing rubber particles

Open-cell moldable foams are based on a thermoplastic matrix which comprises A. from 99 to 50% by weight of a styrene polymer and B. from 1 to 50% by weight of a polymer of low compatibility with the styrene polymer.

Open-cell particulate foams

Biodegradable polyester material particles

A process for preparing expandable particulate styrene polymers wherein from 5 to 50% by weight of expanded graphite and also, if desired, from 2 to 20% by weight of a phosphorus compound, are present as flame retardants, by suspension polymerization of styrene in the presence of the flame retardants.

Method for producing expandable polystyrene particles

Flame-retardant foam slabs are based on styrene polymers wherein from 1 to 12% by weight of expanded graphite and also, if desired, from 1 to 12% by weight of a phosphorus compound are present as flame retardants.

Flame-proofed polystyrene foamed materials

The invention relates to expandable polystyrene beads which comprise graphite particles with an average particle size of more than 50 &mgr;m, and also to a process for their preparation by free-radical polymerization of styrene in aqueous suspension. The graphite particles, suspended in styrene, are added to the polymerization mixture at a conversion of from 10 to 100%.

Expandable styrene polymers containing graphite particles

The invention relates to a process for preparing styrene polymers which comprise water as sole blowing agent, by polymerizing styrene in aqueous suspension in the presence of from 0.1 to 15% by weight of a solid substance insoluble in water and in styrene, for example carbon black or graphite.

Method for producing water expandable styrene polymers

The invention relates to a process for the preparation of expandable able styrene polymers containing particles of graphite by polymerization merization of styrene in aqueous suspension in the presence of particles of graphite having a mass density of less than 1.8 g/cm .

Method for producing expandable styrene polymers containing exfoliated graphite particles

Expandable styrene polymers containing graphite particles are prepared by polymerizing styrene in aqueous suspension in the presence of graphite particles and of two peroxides which decompose at different temperatures, by a process in which the peroxide decomposing at the lower temperature forms neither benzoyl nor benzyl radicals on decomposition.

Method for producing expandable styrene polymers

A process prepares styrene polymers comprising water as sole blowing agent by mixing a polystyrene melt with water and with an emulsifying agent in an extruder, extruding the melt into a waterbath and pelletizing the cooled extrudate.

Particulate expandable styrene polymers contain homogeneously distributed graphite particles and can be processed to give self-extinguishing foams having a density of &lE;35 g/l.

The invention relates to a process for preparing styrene polymers comprising water as sole blowing agent, by polymerizing styrene in aqueous suspension. The polymerization is carried out in the presence of from 5 to 30% by weight of recycled EPS material dissolved in styrene and comprising customary coating agents deriving from production of the EPS.

Growing community of inventors

Mainz, Germany

Guiscard Glück

Growing community of inventors

Mainz, Germany

Guiscard Gl&uuml;ck

Guiscard Glück