Abstract:
The invention is related to a process for producing modified polyethylene having decreased melt flow rate (5 kg, 190°C) (MFR). In particular, the present invention is directed to a process in a controlled manner for producing modified polyethylene recyclates having low MFR and low gel content directly by reactive extrusion processing.
Abstract:
The present invention relates to a polypropylene composition comprising (a) a propylene polymer base resin, and (b) carbonaceous structures, wherein the carbonaceous structures (b) have a BET surface area of at least 200 m 2 /g and a density of less than 100 g/L, and wherein the carbonaceous structures (b) have a BET surface area of at least 200 m 2 /g and a density of less than 100 g/L, and wherein said polypropylene composition has a tensile modulus of at least 1715 MPa at the amount of said carbonaceous structures below 5 wt% based on the total amount of said polypropylene composition.
Abstract:
The present invention relates to a polyethylene composition comprising an ethylene polymer base resin, and carbonaceous structures, wherein the carbonaceous structures (b) have a BET surface area of at least 200 m 2 /g and a density of less than 100 g/L, and wherein said polyethylene composition has a tensile modulus of at least 1060 MPa determined according to ISO 527-2, at the amount of said carbonaceous structures below 5 wt% based on the total amount of said polyethylene composition.
Abstract:
The present invention relates to a polyethylene composition comprising a base resin which comprises (A) a first ethylene homo- or copolymer fraction, and (B) a second ethylene-hexene-1 copolymer fraction, wherein fraction (A) has a lower molecular weight than fraction (B) and wherein fraction (B) is present in an amount of from 51.0 to 58.5 wt.%, preferably 52.0 to 57.5 wt.%, more preferably 53.0 to 57.0 wt.% based on the total weight of the base resin, wherein fraction (B) of the base resin has a content of units derived from hexene- 1 from 0.80 to 1.45 mol%, preferably of from 0.82 to 1.35 mol% and more preferably of from 0.85 to 1.30 mol%, wherein the base resin has a number average molecular weight Mn of 8,500 g/mol or higher, and wherein the polyethylene composition has a melt flow rate MFRs from 0.10 to 0.30 g/10min, preferably from 0.15 to 0.28, and still more preferably from 0.16 to 0.25 g/10min, to a process for producing the polyethylene composition, to an article, especially a pipe comprising the polyethylene composition and to the use of the polyethylene composition for the production of an article, especially a pipe.
Abstract:
The present invention relates to a pipe which comprises (i) a peroxide-crosslinked polyethylene, and (ii) a sterically hindered amine which comprises the following repeating unit of formula (I).
Abstract:
The invention is related to a polyethylene composition characterized in that it comprises a base resin and an inorganic mineral filler which is present in the composition in an amount of 1 to 50 wt% in respect to the weight of composition, wherein said base resin comprises: a) a first crosslinked polyethylene (PEX) having a gel content (measured according to ASTM D 2765:2006) in the range of 5% to 80% in respect to the weight of crosslinked polyethylene (PEX), said crosslinked polyethylene (PEX) being obtained from recycled wastes and b) a second polyethylene (PE)selected from virgin polyethylene and recycled polyethylene, or mixtures thereof. The invention is further related to a process for production of said polyethylene composition, and use of the polyethylene composition.
Abstract translation:本发明涉及一种聚乙烯组合物,其特征在于,其包含相对于组合物重量为1至50重量%的组合物中存在的组合物中的基础树脂和无机矿物填料,其中所述基础树脂包含: a)相对于交联聚乙烯(PEX)的重量,所述交联聚乙烯(PEX)的交联聚乙烯(PEX)的重量,具有5%至80%的凝胶含量(根据ASTM D 2765:2006测量)的第一交联聚乙烯(PEX) 从再循环废物中获得,以及b)选自原始聚乙烯和再循环聚乙烯的第二聚乙烯(PE)或其混合物。 本发明进一步涉及所述聚乙烯组合物的制备方法和聚乙烯组合物的用途。
Abstract:
The present invention provides a process for producing a polyethylene composition by treating a cross-linkable ethylene copolymer containing monomer units with hydrolysable silane-groups and polar monomer units. The invention further provides a treated cross-linkable polyethylene composition 5 obtained by the process and a silane-crosslinked polyethylene composition obtained by the process. The invention further provides articles comprising the treated cross-linkable polyethylene composition or comprising the silane- crosslinked polyethylene composition.