Basf Aktiengesellschaft

Basell Polyolefine Gmbh

Elenac Gmbh

Dieter Boes

Dieter Lilge

Wolfgang Rohde

Bernhard Springholz

Andreas Wüst

Jörg Schnorr

Roger Weinlein

Günter Hatzmann

Michael Flosdorff

Rudolf Paatz

Guenther Pfirrmann

Günther Pfirrmann

Large blow moldings are made from polyethylene of density &#x3c1;&#x2267;0.94 g/cmand of melt flow rate MFR 190/21.6&#x3c;50 g/10 min, and of notched tensile impact strength a(&#x2212;30&#xb0; C.) not less than 300 kJ/mand bursting strength, determined by a drop height test at &#x2212;18&#xb0; C., of more than 3 m. Processes for producing large blow moldings of this type involve annealing large blow moldings after production. The moldings are used for storage and transport of hazardous materials.

Large blow moldings made from polyethylene

The present invention relates to a process for producing hollow plastic articles, encompassing the following steps:

Production of hollow plastic articles

A process is described for stabilizing polyethylene grit in which a sterically hindered phenol and an ester of phosphorous or of hypophosphorous acid are added to said grit, wherein the sterically hindered phenol in melt form and the ester of phosphorous or of hypophosphorous acid are made available to the polyethylene grit within a ground polyolefin matrix in which the ester is incorporated, the polyolefin matrix being compatible with the polyethylene grit.

Stabilization of polyethylene grit

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Wiesloch, Germany

Dieter Boes