Abstract:
A fibre for thermal bonding comprising semicrystalline random copolymers of propylene, 1 hexene and optionally another a-olefin, the amount of 1-hexen being from 0.75 to less 1.52 mol% (i.e. 1.5 to less than 3 wt%) with respect to the total weight of the copolymer. The said copolymers possess a value of melt flow rate (MFR) ranging from 4 to 35 g /10 min and a molecular weight distribution, in terms of the ratio between weight average molecular weight and numeric average molecular weight (I), ranging from 4 to 12.
Abstract:
Polyolefin compositions, comprising (percent by weight): 1) 55-80% of a homopolymer or copolymer of propylene, said copolymer containing up to 15% of ethylene and/or C4-C10 -olefin(s). 2) 20-45% of a copolymer of ethylene with one or more C4-C10 -olefin(s) containing from 10 to 40% of said C4-C10 -olefin(s); said compositions having values of MFR (230 °C, 2.16 kg) up to 20 g/10 min, a total content of ethylene of 20% or more, a total content of C4-C10 -olefin(s) of 4.5% or more, a ratio of the total content of ethylene to the total content of C4-C10 -olefin(s) of 2.3 or more, a total fract ion soluble in xylene at room temperature of 18 wt% or higher and flexural modulus, referred to the composition as a reactor grade, of more than 700 MPa.
Abstract:
Pipe systems having at least one layer comprising a semi-crystalline random polymer of propylene and 0.2 to 5 wt% 1-hexen and optionally a recurring unit selected from ethylene and a C4-C10 α-olefin in an amount from more than 0 to 9 % by moles. The polymer exhibits broad molecular weight distribution, in terms of the ratio of weight average molecular weight to numeric average molecular weight formula (I), ranging from 5 to 11, molecular weight distribution of monomodal type and hexen-1 content in the fraction with an intrinsic viscosity of equal to or higher than 3.3 dl/g lower than the hexen-1 content in the fraction with an intrinsic viscosity of less than 3.3 dl/g.
Abstract:
A fibre for thermal bonding comprising semicrystalline random copolymers of propylene, 1 hexene and optionally another a-olefin, the amount of 1-hexen being from 0.75 to less 1.52 mol% (i.e. 1.5 to less than 3 wt%) with respect to the total weight of the copolymer. The said copolymers possess a value of melt flow rate (MFR) ranging from 4 to 35 g /10 min and a molecular weight distribution, in terms of the ratio between weight average molecular weight and numeric average molecular weight (I), ranging from 4 to 12.
Abstract:
A polyolefin compositions comprising: A) From 77 wt% to 90 wt%, of a propylene homopolymer having the fraction soluble in xylene at 25°C lower than 2 wt%; B) from 10 wt% to 23 wt% of a copolymer of ethylene with one C 4 -C 10 alpha-olefin containing from 20 wt% to 30 wt%, of said C 4 -C 10 alpha-olefin derived units; said composition having - the value of melt flow rate (MFR) at 230 °C, 2.16 kg of from 0.5 to 4.5 g/10 min; - the total content of ethylene of from 10 wt% to 18 wt%; - the value of the intrinsic viscosity of the total fraction soluble in Xylene at 25°C (AMXSIVtot) is less than 1.5 dl/g.
Abstract:
A propylene, ethylene, 1-butene terpolymer containing from 0.5 wt% to 2.2 wt% of ethylene derived units and from 6.0 wt% to 20.0 wt% of 1 butene derived units; wherein: i) the ratio C2wt%/C4wt% ranges from 0.09 to 0.06; wherein C2wt% is the weight per cent of ethylene derived units and C4wt% is the weight per cent of 1-butene derived units; ii) the Melt flow rate ranges from 0.4 to 54 g/10 min; iii) the xylene soluble fraction at 25°C is lower than 15.0 wt% the minimum value being 5.0 wt%.
Abstract:
A polymer composition and/or an article containing: (a) a random propylene terpolymer which comprises: (i) 90.0-96.0 wt. %, based on the total weight of the propylene terpolymer, of propylene derived units; (ii) 3.0-7.0 wt. %, based on the total weight of the propylene terpolymer, of 1-butene derived units; and (iii) 1.0-5.0 wt. %, based on the total weight of the propylene terpolymer, of ethylene derived units; and (b) about 0.01 to about 1.0 wt. %, based on the total weight of the propylene terpolymer, of a clarifying agent, with the balance of the polymer composition being the random propylene terpolymer and/or optionally at least one additive.
Abstract:
A terpolymer containing propylene, ethylene and an alpha olefins of formula CH2═CHZ wherein Z is an hydrocarbon group having from 2 to 10 carbon atoms wherein: (i) the content of ethylene derived units ranges from 0.5 wt % to 5.0 wt %; (ii) the content of alpha olefin derived units ranges from 1.0 wt % to 5.0 wt %; (iii) the area of the DSC curve after the peak of the melting point (Tm) represents more than 22%; of the total area of the DSC curve; (iv) the polydispersity index (PI) ranges from 2.0 to 7.0.
Abstract:
A propylene/ethylene/1-hexene terpolymer containing from 1.0 wt% to 2.5 wt%, of ethylene derived units and from 2.0wt% to 3.5wt% of 1-hexene derived units, the sum of the amounts of propylene, ethylene and 1-.hexene derived units being 100, having the following features: a)the amount (Wt%) of 1-hexene (C6) and the amount (Wt%) of ethylene (C2) fulfil the following relation (i): 0.5
Abstract:
A terpolymer containing propylene, ethylene and an alpha olefins of formula CH2=CHZ wherein Z is an hydrocarbon group having from 2 to 10 carbon atoms wherein: (i) the content of ethylene derived units ranges from 0.5 wt% to 5.0 wt%; (ii) the content of alpha olefin derived units ranges from 1.0 wt% to 5.0 wt%; (iii) the amount (Wt%) of alpha-olefin (C6), the amount (Wt%) of ethylene (C2) and the melting point (Tm) of the terpolymer fulfil the following relation (1) Tm>-(C2+0.8C6)*6+157 (1) (iv) the polydispersity index (PI) ranges from 3 to 8.