| Patent application number | Description | Published |
|---|
| 20080233322 | Pressureless Pipe Comprising a Multimodal Polyethylene Composition With an Inorganic Filler - The present invention relates to a pipe or a supplementary pipe article comprising a polyethylene composition comprising a base resin which comprises (A) a first ethylene homo- or copolymer fraction, and (B) a second ethylene homo- or copolymer fraction, wherein fraction (A) has a lower average molecular weight than fraction (B), the base resin has a flexural modulus determined according to ISO 178 of 1000 MPa or higher, and the composition further comprises (C) an inorganic mineral filler, wherein inorganic mineral filler (C) is present in the composition in an amount of 1 to 70 wt. %, and to the use of said composition for the production of a pipe or a supplementary pipe article. | 09-25-2008 |
| 20080254246 | Pressure Pipe Comprising a Multimodal Polyethylene Composition With an Inorganic Filler - The present invention relates to a pipe or a supplementary pipe article comprising a polyethylene composition comprising a base resin which comprises (A) a first ethylene homopolymer fraction, and (B) a second ethylene homo- or copolymer fraction, wherein fraction (A) has a lower average molecular weight than fraction (B), and the composition further comprises (C) an inorganic mineral filler, wherein inorganic mineral filler (C) is present in the composition in an amount of 1 to 70 wt. %, and to the use of said composition for the production of a pipe or a supplementary pipe article. | 10-16-2008 |
| 20100016481 | POLYOLEFIN COMPOSITION WITH INCREASED RESISTANCE TO CIO2-CONTAINING WATER - The present invention relates to a polyolefin composition comprising a polyolefin base resin and an antioxidant, characterized in that said polyolefin composition has a lifetime of at least 200 h in a test measuring the resistance against ClO | 01-21-2010 |
| 20100035008 | PIPE COMPRISING SUPER SLOW CRACK GROWTH RESISTANT POLYETHYLENE - A pipe or a supplementary pipe article comprising a polyethylene composition comprising a base resin which comprises: (A) a first ethylene homo- or copolymer fraction having an MFR | 02-11-2010 |
| 20100040819 | POLYETHYLENE COMPOSITION FOR PRESSURE PIPES WITH ENHANCED FLEXIBILITY - The present invention relates to a polyethylene composition comprising a base resin which comprises (a) an ethylene homo- or copolymer fraction (A); and (b) an ethylene homo- or copolymer fraction (B), wherein (i) fraction (A) has a lower weight average molecular weight than fraction (B); (ii) the base resin has a density of 932 to 938 kg/m | 02-18-2010 |
| 20100130705 | Ziegler-Natta Catalyst and Its Use To Prepare Multimodal Polyolefin - The present invention provides a method for tailoring the molecular weight distribution of a multimodal (e.g. bimodal) ethylene polymer having a lower molecular weight component and a higher molecular weight component comprising polymerising ethylene and optionally at least one further alpha olefin in at least two stages, wherein at least one stage is carried out in a slurry phase in the presence of a Ziegler Natta catalyst comprising an electron donor which is an ether. | 05-27-2010 |
| 20100178443 | POLYETHYLENE COMPOSITION FOR PRESSURE PIPES WITH ENHANCED FLEXIBILITY - The present invention relates to a polyethylene composition comprising a base resin which comprises (a) an ethylene homo- or copolymer fraction (A); and (b) an ethylene homo- or copolymer fraction (B), wherein (i) fraction (A) has a lower average molecular weight than fraction (B); (ii) the base resin has a density of 940 to 947 kg/m | 07-15-2010 |
| 20100279047 | Coated Pipes Having Improved Mechanical Properties at Elevated Temperatures and a Method of Production Thereof - The present invention deals with coated pipes having a layer of multimodal polyethylene. The multimodal ethylene copolymer is a copolymer of ethylene with one or more alpha-olefin comonomers having from 4 to 10 carbon atoms and has a weight average molecular weight of from 70000 g/mol to 250000 g/mol and a melt index MFR | 11-04-2010 |
| 20100313986 | PROCESS FOR COATING A PIPE WITH HIGH THROUGHPUT USING MULTIMODAL ETHYLENE COPOLYMER, AND COATED PIPES OBTAINED THEREOF - The present invention deals with coated pipes having a layer of multimodal polyethylene. The multimodal ethylene copolymer is a copolymer of ethylene with one or more alpha-olefin comonomers having from 4 to 10 carbon atoms and has a weight average molecular weight of from 70000 g/mol to 250000 g/mol, the ratio of the weight average molecular weight to the number average molecular weight, Mw/Mn, of from 15 to 50, a melt index MFR | 12-16-2010 |
| 20110091674 | Polymer Compositions Having Improved Homogeneity and Odour, A Method For Making Them and Pipes Made Thereof - The present invention deals with polymer compositions suitable for making pipes. The compositions comprise a multimodal copolymer of ethylene and one or more alpha-olefins having from 4 to 10 carbon atoms wherein the multimodal ethylene copolymer has a density of from 924 to 960 kg/m | 04-21-2011 |
| 20110108121 | Polymer Compositions and Pressure-Resistant Pipes Made Therefrom - The present invention deals with polymer compositions suitable for making pipes. The compositions comprise a multimodal copolymer of ethylene and one or more alpha-olefins having from 4 to 10 carbon atoms wherein the multimodal ethylene copolymer has a density of from 924 to 935 kg/m | 05-12-2011 |
| 20110165357 | High Density Polymer Compositions, A Method for Their Preparation and Pressure-Resistant Pipes made Therefrom - The present invention deals with polymer compositions suitable for making pipes. The compositions comprise a multimodal copolymer of ethylene and one or more alpha-olefins having from 4 to 10 carbon atoms wherein the multimodal ethylene copolymer has a density of from 937 to 950 kg/m | 07-07-2011 |
