Abstract:
Use of talc as a nucleating agent for linear low density polyethylene formed from ethylene and at least one C, 4 _ 10 alpha-olefin comonomer, said polyethylene having a density below 940 g/cm3.
Abstract translation:使用滑石作为由乙烯和至少一种C 4〜10α-烯烃共聚单体形成的线性低密度聚乙烯的成核剂,所述聚乙烯的密度低于940g / cm 3。
Abstract:
A method and an apparatus for taking sample from a flowing suspension formed by polymer particles and hydrocarbon diluent in olefin polymerization, which comprises at least one filter means situated at the plane of inside surface of flow space, which filter means is furnished with such perforation, where the size of pores is essentially smaller than the smallest particle size of the catalyst used in the polymerization. The perforation size of the filter means is preferably 0.1-10 mu m, preferably between 0.2-1 mu m.
Abstract:
A method for preventing sheeting problems in a gas phase reactor in such multi-phase polymerization process, which comprises at least one loop reactor followed by a gas phase reactor, where the polymerization is continued in the presence of added monomers, and in which process a fouling preventive agent is used to prevent fouling or sheeting in the reactors. According to the invention 30-70 % of the end product is polymerized in the loop reactor, where the whole amount of the fouling preventive agent is added, the amount of the fouling preventive agent being higher than necessary to prevent the fouling in the loop reactor.
Abstract:
An extrusion coated substrate having a coating comprising a polyethylene produced by polymerization catalysed by a single site catalyst and comprising as comonomers to ethylene at least two C 4-12 alpha olefins
Abstract:
Extrusion coating polyethylene composition A), comprising a) 70 wt% - 98wt% of a high pressure low density polyethylene homopolymer, produced in a tubular reactor, having a melt index of 2 to 8 g/10 min according to ISO 1133 (190°C, 2.16 kg) and a density of 915 to 935 kg/m 3 according to ISO 1183 and b) 2 wt% - 30 wt of a long chain branched, low-density polyethylene, having a melt index MFR of 2.5 to 10.0 g/10 min according to ISO 1133 (190°C, 2.16 kg), a density of 910 to 935 kg/m 3 according to ISO 1183 and - a dynamic viscosity η 0.05 at a shear rate of 0.05 rad/s and a dynamic viscosity η 300 rad/s which satisfy the following relationship: η 300 ≤ 108 Pa*s + 0.0253* η 0.05 and/or - a phase shift δ 0.5 at a frequency of 0.5 rad/s and a phase shift δ 300 at a frequency of 300 rad/s, which satisfy the following relationship: tan δ 300 ≥ 0.45 + 0.164* tan δ 0.05 and its use.
Abstract translation:挤出涂覆聚乙烯组合物A),其包含a)70重量%至98重量%的在管式反应器中制备的高压低密度聚乙烯均聚物,根据ISO 1133(190°)具有2至8g / 10min的熔体指数 C,2.16kg),根据ISO 1183的密度为915至935kg / m 3,b)2重量%-30重量%的长链支化低密度聚乙烯,其熔体指数MFR为2.5至10.0g / 根据ISO 1133(190℃,2.16kg)10分钟,根据ISO 1183的密度为910至935kg / m 3,剪切速率为0.05rad / s时的动态粘度≥0.05,动态粘度≥300 满足以下关系的rad / s:在300rad / s的频率下的Δ300= 108Pa * s + 0.0253 *≤0.05和/或 - 在0.5rad / s的频率下的相移d0.5和300rad的频率的相移d300 / s,满足以下关系:tan d300 = 0.45 + 0.164 * tan d 0.05及其用途。
Abstract:
Two-component adhesion composition suitable for extrusion coating paper substrates which comprises a) from 70 to 98 wt% of high melt strength polypropylene (A) with a branching index g' of 0.9 or less and b) from 2 to 30 wt% of a component (B) selected from the group of (i) maleic anhydride-modified polypropylene (MAPP) (ii) maleic anhydride-modified polypropylene wax (iii) polypropylene homopolymer with high melt flow rate or (iv) ethylene-vinyl acetate-based hot melt adhesive and its use.
Abstract:
According to one aspect, the present invention relates to a low-density polyethylene having a melt index MFR 2 of 2.5 to 10.0 g/10 min, a density of 910 to 935 kg/ m3 , and a dynamic viscosity η o.o5 at a shear rate of 0.05 rad/s and a dynamic viscosity η 300 at a shear rate of 300 rad/s which satisfy the following relationship: η 300 ≤ 108 * Pas + 0.0253 * η o.o5 . According to a second aspect, the present invention relates to a low-density polyethylene having a melt index MFR 2 of 2.5 to 10.0 g/10 min, a density of 910 to 935 kg/m 3 , and a phase shift δ 0.5 at a frequency of 0.5 rad/s and a phase shift δ 300 at a frequency of 300 rad/s, which satisfy the following relationship:tan δ 300 ≥ 0.45 + 0.164 * tan δ 0.5 .