Abstract:
The present disclosure relates to a multilayer film, wherein at least one layer comprises a polyolefin composition comprising: A) 5-35% by weight of a propylene homopolymer or a propylene ethylene copolymer; B) 25-50% by weight of a copolymer of ethylene and a C 3 -C 8 alpha-olefin comprising 0.1- 20% by weight of C 3 -C 8 alpha-olefin units; and C) 30-60% by weight of a copolymer of ethylene and propylene comprising 25-75% by weight of ethylene units.
Abstract:
A catalyst component for the (co)polymerization of olefins, comprising Ti, Mg, halogen, an electron donor (ID) selected from aliphatic cyclic ethers or alkyl esters of aliphatic monocarboxylic acids and a compound of a metal selected from Zn or Cu which is devoid of Zn-C or Cu-C bonds in which the Mg/Ti molar ratio ranges from 4.0 to 50.0 is capable to produce LLDPE with excellent quality due to capability of comonomer randomization.
Abstract:
A butene-1 polymer composition having MFR values of from 400 to 2000 g/10 min, measured according to ISO 1133 at 190°C with a load of 2.16 kg, comprising: A) a butene-1 homopolymer or a copolymer of butene-1 with one or more comonomers selected from ethylene and higher alpha-olefins, having a copolymerized comonomer content of up to 5% by mole; B) a copolymer of butene-1 with one or more comonomers selected from ethylene and higher alpha-olefins, having a copolymerized comonomer content of from 6% to 25% by mole; said composition having a total copolymerized comonomer content from 5% to 18% by mole, referred to the sum of A) and B), and a content of fraction soluble in xylene at 0°C of 65% by weight or more, determined on the total weight of A) and B).
Abstract:
A multilayer blow film for stretch hood comprising one or more layers comprising a polyolefin composition comprising: from 20 wt% to 80 wt% of Component A) and from 20 wt% to 80 wt% of Component B); wherein component A) is an ethylene copolymer and Component B) is a polyolefin composition comprising: (i) 5-35% by weight; of a propylene homopolymer or a propylene ethylene copolymer (ii) 20-50% by weight; of a copolymer of ethylene and a C3-C8 alpha-olefin; and (iii) 30-60% by weight of a copolymer of ethylene and propylene.
Abstract:
A propylene composition comprising (percent by weight): A) 70%-95%, of a propylene homopolymer having a Polydispersity Index (P.I.) value of from 4.6 to 10, a fraction insoluble in xylene at 25 °C, higher than 90 %, and MFR L (Melt Flow Rate according to ISO 1133, condition L, i.e. 230°C and 2.16 kg load) from 47 to 90 g/10 min; B) 5%-30%, of a copolymer of propylene containing from 40% to 34.5% extremes included of ethylene derived units; the composition having an intrinsic viscosity of the fraction soluble in xylene at 25 °C comprised between 3 and 5 dl/g.
Abstract:
A polyolefin composition, particularly suited for preparing gaskets for closures, comprising: A) from 60 to 89% by weight of a copolymer of butene-1 with ethylene having a copolymerized ethylene content of up to 18% by mole and no melting peak detectable at the DSC at the second heating scan; B) from 11 to 40% by weight of an ethylene polymer having density of from 0.900 to 0.970 g/cm3, measured according to ISO 1183 at 23°C; wherein the amounts of A) and B) are referred to the total weight of A) + B).
Abstract translation:一种聚烯烃组合物,特别适合于制备用于封闭的垫圈的聚烯烃组合物,其包含:A)60-89重量%的丁烯-1与乙烯的共聚物,共聚乙烯含量最高达18% 在第二次加热扫描时在DSC处没有可检测到的熔融峰; B)11至40重量%的密度为0.900至0.970g / cm 3的乙烯聚合物,其根据ISO 1183在23℃下测量; 其中A)和B)的量是指A)+ B)的总重量
Abstract:
Catalyst component for the polymerization of olefins comprising Mg. Ti and an electron donor belonging to mercaptoester derivatives of specific formula (I) in which Z is selected from C, Si, O, N, S or P with the proviso that the atoms O, S, P and N are not directly linked to either the carboxylic group or the sulphur atom of formula (I), the R 2 groups, equal to or different from each other, are hydrogen or a C 1 -C 20 hydrocarbon radicals, optionally containing a heteroatom selected from halogen, P, S, N,O and Si, which can be fused together to form one or more cycles, m is a number satisfying the valences of Z and n is an integer ranging from 1 to 10, X is O or S, Y is -OR 3 , -NR 4 R 5 ) or R 6 groups in which R 1 and R 3 are selected from C 1 -C 15 hydrocarbon groups, optionally containing a heteroatom selected from halogen, P, S, N,O, and Si, R 4 -R 5 groups, independently, are hydrogen or R 1 groups and R 6 groups have the same meaning as R 1 groups.
Abstract:
A container comprising a propylene, ethylene, 1-hexene terpolymer wherein in the terpolymer: (i) the content of ethylene derived units ranges from 0.6 wt% to 1.1 wt%; (ii) the content of 1-hexene derived units ranges from 1.1 wt% to 2.8 wt%; (iii) the ratio between the ethylene derived units content and the 1-hexene derived units content C2/C6 fulfills the following equation (I); C2/C6
Abstract:
A container comprising a propylene, ethylene, 1-butene terpolymer wherein in the terpolymer: i) the content of ethylene derived units ranges from 0.5 wt. % to 1.8 wt. %; ii) the content of 1-butene derived units ranges from 1.5 wt. % to 2.5; iii) the ratio C2wt%/C4wt% ranges from 0.40 to 0.80; wherein C2wt% is the weight per cent of ethylene derived units and C4wt% is the weight per cent of 1-butene derived units; iv) the melt flow rate, MFR measured according to ISO 1133, 230° C, 2.16 kg ranges from 30 to 80 g/10 min; v) the xylene soluble fraction at 25 °C is lower than 5.0 wt. %; vi) the melting point is higher than 140°C.
Abstract:
Catalysts systems for the polymerization of olefins CH 2 =CHR, wherein R is an alkyl, cycloalkyl or aryl radical having 1-12 carbon atoms, comprising (A) a solid catalyst component comprising Ti, Mg, and halogen (B) an aluminum alkyl compound and (C) a halogenated cyclic ether compound show improved polymerization activity.