Borealis Ag

Borealis Gmbh

Pcd Polymere Gesellschaft M.b.h.

Dirk Leistner

Achim Hesse

Manfred Raetzsch

Markus Gahleitner

Klaus Bernreitner

Norbert Hafner

Norbert Reichelt

Hartmut Bucka

Ulf Panzer

Harmut Bucka

Sergej Ivanchev

Alla Mesh

Saul Heikin

Moisej Pukschanski

Manfred Ratzsch

Cross-linkable, olefinic polymers synthesized from mixtures of olefinic polymers and ethylenically unsaturated organosilane compounds, which can be grafted, by a 2-step method using thermally decomposing free radical-forming agents by heating the mixtures to a temperature of 30.degree. to 110.degree. C. below the softening temperature or the crystallite melting point of the olefinic polymers used and subsequently heating the mixtures to a reaction temperature of 10.degree. to 60 .degree. C. below the softening temperature or the crystallite melting point of the olefinic polymers used. In the alternative, they can be grafted by a method involving the action of ionizing radiation with simultaneous absorption of organosilane compounds and the action of radiation. The method is suitable for producing films, sheets, fibers, panels, coatings, pipes, hollow objects, foamed materials and molded articles.

Cross-linkable, olefinic polymers and methods for their synthesis

Fine-celled polyolefin foams of high dimensional stability at elevated temperatures and high stiffness, with foam densities ranging from 10 to 600 kg/m.sup.3, consisting of mixtures of polypropylenes and polyolefins, which were reacted with bifunctional, unsaturated monomers and/or hydrolyzable, ethylenically unsaturated organosilane compounds in the presence of thermally decomposing free radical-forming agents in two reactive process steps and subsequently foamed. The fine-celled polyolefin foams are suitable for use in the packaging sector, preferably for packaging foods, for external and internal parts of motor vehicles and for components of electric and electronic equipment.

Fine-celled polyolefin foam materials

Elastomeric polypropylenes modified by grafting and blends thereof with isotactic polypropylenes modified by grafting, and the use thereof as compatibilizers or adhesion promoters for blends and metal composites.

Modified elastomeric polypropylenes

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Vienna, Austria

Dirk Leistner