| Patent Number |
Title Of Patent |
Date Issued |
| 7427649 |
Polyethylene blow molding composition for producing small containers |
September 23, 2008 |
| The invention relates to a polyethylene composition with multi-modal molecular mass distribution, which is particularly suitable for blow molding of small containers with a volume in the range of from 200 to 5000 cm.sup.3 (=ml). The composition has a density in the range of from 0.95 |
| 7402637 |
Method for producing a poly-1-olefin in the presence of a Ziegler catalyst |
July 22, 2008 |
| The invention relates to a method for producing a poly-1-olefin by polymerization of a 1-olefin of the formula R.sup.4C.dbd.CH.sub.2, in which R.sup.4 is hydrogen or an alkyl radical having from 1 to 10 carbon atoms, in suspension, in solution or in the gas the gas phase, at a temper |
| 7196152 |
Modified Ziegler catalyst, process for preparing it and process for preparing poly-1-olefins in |
March 27, 2007 |
| The invention relates to a modified Ziegler catalyst for preparing a poly-1-olefin in suspension, in solution or in the gas phase, which catalyst comprises the reaction product of a magnesium alkoxide (component a) with a transition metal compound (component b) and an organometallic |
| 7008898 |
Method for producing a poly-1-olefin in the presence of a ziegler catalyst |
March 7, 2006 |
| The invention relates to a method for producing a poly-1-olefin by polymerisation of a 1-olefin of the formula R.sup.4CH.dbd.CH.sub.2, in which R.sup.4 is hydrogen or an alkyl radical having from 1 to 10 carbon atoms, in suspension, in solution or in the gas phase, at a temperature o |
| 6770341 |
Polyethylene molding material and pipe produced therewith with improved mechanical properties |
August 3, 2004 |
| A polyethylene molding material has a bimodal molecular weight distribution with an overall density of .gtoreq.0.948 g/cm.sup.3 and a melt flow index MFI.sub.190/5 of .ltoreq.0.2 dg/min. The molding material comprises from 35 to 65% by weight of low-molecular-weight ethylene hompolymer A |
| 6713561 |
Polyethylene moulding compound with an improved ESCR/stiffness relation and an improved swelling |
March 30, 2004 |
| The invention relates to a polyethylene moulding compound having a multimodal molecular weight distribution which has an overall density of .gtoreq.0.940 g/cm.sup.3 and an MFI.sub.190/5 in the range from 0.01 to 10 dg/min. The moulding compound according to the invention comprises an |
| 6204345 |
Suspension polymerization for preparing polyolefins |
March 20, 2001 |
| The novel process for preparing ethylene copolymers by polymerizing ethylene with, as comonomer, up to 10% by weight, based on the total amount of the monomers, of a 1-olefin of the formula R--CH.dbd.CH.sub.2, where R is a straight-chain or branched alkyl radical having from 1 to 4 c |
| 5908679 |
Pipe of polyethylene having improved mechanical properties |
June 1, 1999 |
| The invention relates to a high strength pipe of ethylene polymer having a bimodal molecular weight distribution. Such pipe has a stress cracking resistance of .gtoreq.1400 h, a fracture toughness of .gtoreq.7 mJ/mm.sup.2 and a modulus of creep in flexure, measured according to DIN 5 |
| 5798309 |
Process for preparing a poly-1-olefin |
August 25, 1998 |
| Process for preparing a poly-1-olefinBy means of a highly active spherical Ziegler catalyst based on a dialkylmagnesium, spherical polymers can be obtained in the polymerization of alpha-olefins. A further advantage of the catalyst of the invention lies in the high catalyst activity, so |
| 5741545 |
Process for conditioning organic substrate surfaces |
April 21, 1998 |
| Organic substrate surfaces, particularly of industrial polymers, are provided by fluorination or chlorination with corresponding layers so as to obtain certain properties; for the purpose of improving the application of a layer, the surfaces are exposed beforehand at temperatures between |
| 5602218 |
Process for the preparation of a poly-1-olefin |
February 11, 1997 |
| A particularly uniform Ziegler catalyst in the form of spherical particles is obtained by using shock waves instead of a stirrer for the thorough mixing of the reactants. By means of this highly active catalyst based on a magnesium dialkyl, it is possible to obtain polymers in the form o |
