Abstract:
The invention relates to a syntactic polyolefin composition for pipe coating, wherein the composition comprises a β-nucleated propylene polymer and microspheres. The invention also relates to a method for the preparation of the composition for pipe coating and to an off-shore pipe coated with the syntactic polyolefin composition.
Abstract:
Polyolefin coated steel pipes with high dynamic fracture toughness of the coating of the steel pipes during installation handling and in service, consisting of a steel pipe core, optionally an intermediate foamed plastic material, and a polyolefin coating of β-nucleated propylene copolymers whereby a test polyolefin pipe fabricated from the β-nucleated propylene copolymer has a critical pressure of >25 bars and a dynamic fracture toughness >3.5 MNm−3/2. The polyolefin coated steel pipes are suitable for off-shore transport of crude oil or gas products or district heating applications.
Abstract:
Process for producing single layer and multilayer polyolefin foam pipes with improved compression resistance having a polyolefin foam layer which consists of mixtures of modified propylene polymers having strain hardening behaviour or propylene homopolymers with a stereospecificity index >98% or propylene copolymers with a stereospecificity index of the homopolymer matrix of >96%. The polyolefin foam pipes include coated steel pipes for transporting crude oil or gas products or district heating applications, single layer pipes for insulation purposes and for non- or low-pressure applications and multilayer plastic pipes for the transportation of hot or cold fluids.
Abstract:
The invention relates to a syntactic polyolefin composition for pipe coating, wherein the composition comprises a β-nucleated propylene polymer and microspheres. The invention also relates to a method for the preparation of the composition for pipe coating and to an off-shore pipe coated with the syntactic polyolefin composition.
Abstract:
A coating composition, a process for producing it and substrate coated therewith are described. The composition comprises a multimodal ethylene polymer, which contains from 80 to 99.8% by weight of ethylene repeating units and from 0.2 to 20% by weight of C3-C20 α-olefin repeating units, and is a blend of at least a first and a second ethylene polymer prepared by polymerization in the presence of a single site catalyst system.The blend has a density of 0.915-0.955 g/cm3, a melt flow rate, MFR2, of 0.028-1.5 g/10 min., a molecular weight distribution, Mw/Mn, of 3-10, and a CTL 5.0 MPa-value according to ISO 6259 of at least 500 hrs.
Abstract:
Process for producing single layer and multilayer polyolefin foam pipes with improved compression resistance having a polyolefin foam layer which consists of mixtures of modified propylene polymers having strain hardening behaviour or propylene homopolymers with a stereospecificity index >98% or propylene copolymers with a stereospecificity index of the homopolymer matrix of >96%. The polyolefin foam pipes include coated steel pipes for transporting crude oil or gas products or district heating applications, single layer pipes for insulation purposes and for non- or low-pressure applications and multilayer plastic pipes for the transportation of hot or cold fluids.
Abstract:
A road restraint system part is made of polyolefin material having an energy absorption of at least 10 kJ/m2 at +23° C. and at least 5 kJ/m2 at −20° C. (determined according to ISO 179/1eA with notched specimens).
Abstract translation:道路约束系统部分由聚烯烃材料制成,其在+ 23℃下的能量吸收至少为10kJ / m 2,在-20℃下具有至少5kJ / m 2(根据ISO 179 / 1eA确定,带有凹口 标本)。
Abstract:
Single layer and multilayer polyolefin foam pipes with improved compression resistance have a polyolefin foam layer which consists of mixtures of modified propylene polymers having strain hardening behaviour or propylene homopolymers with a stereospecifity index >98% or propylene copolymers with a stereospecifity index of the homopolymer matrix of >96%. The polyolefin foam pipes are coated steel pipes for transporting crude oil or gas products or district heating applications, single layer pipes for insulation purposes and for non- or low-pressure applications and multilayer plastic pipes for the transportation of hot or cold fluids.
Abstract:
Polyolefin coated steel pipes with high dynamic fracture toughness of the coating of the steel pipes during installation handling and in service, consisting of a steel pipe core, optionally an intermediate foamed plastic material, and a polyolefin coating of β-nucleated propylene copolymers whereby a test polyolefin pipe fabricated from the β-nucleated propylene copolymer has a critical pressure of >25 bars and a dynamic fracture toughness >3.5 MNm−3/2. The polyolefin coated steel pipes are suitable for off-shore transport of crude oil or gas products or district heating applications.
Abstract:
A coating composition, a process for producing it and substrate coated therewith are described. The composition comprises a multimodal ethylene polymer, which contains from 80 to 99.8% by weight of ethylene repeating units and from 0.2 to 20% by weight of C3-C20 α-olefin repeating units, and is a blend of at least a first and a second ethylene polymer that are obtainable by a process comprising at least two steps in which: said first ethylene polymer is prepared by polymerising ethylene and optional comonomer(s) in the presence of a single site catalyst system; and said second ethylene polymer is prepared by polymerising ethylene and optional comonomer(s) in the presence of a single site catalyst system; said steps being performed in any order and the ethylene polymer of each step being present in the following step(s), and producing a blend of from 20 to 80% by weight of said first and from 80 to 20% by weight of said second ethylene polymer, said blend having a density of 0.915-0.955 g/cm3, a melt flow rate, MFR2, of 0.028-1.5 g/10 min., a molecular weight distribution, Mw/Mn, of 3-10, and a CTL 5.0 MPa-value according to ISO 6259 of at least 500 hrs. The substrate coated with the coating composition preferably is a metal pipe.
Abstract translation:描述了涂料组合物,其制备方法和涂覆的基材。 该组合物包含多峰乙烯聚合物,其含有80至99.8重量%的乙烯重复单元和0.2至20重量%的C 3 -C 20亚甲基 烯属重复单元,并且是至少第一和第二乙烯聚合物的共混物,其可通过包含至少两个步骤的方法获得,其中:所述第一乙烯聚合物通过聚合乙烯和任选的共聚单体 存在单一位点催化剂体系; 并且所述第二乙烯聚合物通过在单位点催化剂体系的存在下聚合乙烯和任选的共聚单体来制备; 所述步骤以任何顺序进行,并且每个步骤的乙烯聚合物存在于以下步骤中,并产生20-80重量%的所述第一和80至20重量%的所述第二个 乙烯聚合物,所述共混物的密度为0.915-0.955g / cm 3,熔体流动速率MFR 2为0.028-1.5g / 10min,a 3-10的分子量分布,M w / M n n,以及根据ISO 6259的CTL5.0MPa值至少为500小时。 涂覆有涂料组合物的基材优选为金属管。