摘要:
Heterophasic propylene copolymer (HECO) comprising (a) a polymer mixture comprising a matrix being a polypropylene, said polypropylene comprises at least three polypropylene fractions, the at least three polypropylene fractions differ from each other by the melt flow rate and (ii) an elastomeric propylene copolymer dispersed in said matrix, and a plastomeric olefin copolymer dispersed in said polymer mixture, wherein the plastomeric olefin copolymer is included in the polymer mixture in an amount of between 1 and 5 wt.-% and the heterophasic propylene copolymer has a melt flow rate of equal or more than 40 g/lOmin.
摘要翻译:多相丙烯共聚物(HECO),其包含(a)包含基质为聚丙烯的聚合物混合物,所述聚丙烯包含至少三个聚丙烯部分,所述至少三个聚丙烯部分彼此不同,熔体流动速率和(ii)弹性体 分散在所述基质中的丙烯共聚物和分散在所述聚合物混合物中的塑性烯烃共聚物,其中所述塑性烯烃共聚物以1-5重量%的量包含在所述聚合物混合物中,所述多相丙烯共聚物具有熔体流动 速率等于或大于40 g / lOmin。
摘要:
The present invention relates to the use of a combination of additives comprising at least two of the following compounds: - an antioxidant (A) according to formula (I):
wherein R 1 , R 2 , R 3 , R 4 and R 5 independently are H, or non-substituted or substituted aliphatic or aromatic hydrocarbyl radicals which may comprise heteroatoms, - an antioxidant (B) according to formula (II):
wherein o R 6 , R 7 and R 8 independently are non-substituted or substituted aliphatic or aromatic hydrocarbyl radicals which may comprise OH-groups; ○ X 1 , X 2 , and X 3 independently are H or OH, with the provisio that at least one of X 1 , X 2 and X 3 is OH; and o the entire molecule does not comprise an ester group;
and, - carbon black;
for reducing taste and/or odour in a polyolefin composition.
摘要:
The present invention relates to a heterophasic polyolefin composition having improved flowability and impact strength but also an excellent impact/stiffness balance and a low amount of a hexane extractable fraction, to a process for its preparation, articles made therefrom and uses thereof. The heterophasic polyolefin composition comprises a matrix comprising a propylene homo- and/or copolymer, and an elastomeric ethylene/alpha-olefin phase dispersed in the matrix, the heterophasic polyolefin composition comprising monomer units derived from an oligomeric diene compound, wherein the heterophasic polyolefin composition has a tensile modulus of at least 1600 MPa, measured according to ISO 527-2, a puncture energy determined in instrumented falling weight at 23 °C according to ISO 6603-2 of at least 15.0 J, a Charpy notched impact strength of at least 4.0 kJ/m 2 , determined according to ISO 179/1eA:2000 at 23 °C, and a MFR (2.16 kg, 230 °C, ISO 1133) of at least 50 g/10min. The heterophasic polyolefin composition may be used for any conversion processes for thermoplastic polymers, especially injection moulding.
摘要:
Process for the preparation of an α-nucleated polypropylene comprising the steps of (a) adding an α-nucleating agent into a reactor system, (b) polymerizing in said reactor system in the presence of a catalyst system propylene and optionally ethylene and/or C 4 to C 12 α-olefins obtaining thereby a polypropylene comprising said α-nucleating agent, (c) discharging said polypropylene from the reactor system, and (d) extruding said polypropylene obtaining thereby the α-nucleated polypropylene,
wherein the α-nucleating agent is selected from the group consisting of benzene amid derivatives, sorbitol derivatives, nonitol derivatives and mixtures thereof.
摘要:
The present invention relates to a heterophasic polyolefin composition having improved flowability and impact strength but also an excellent impact/stiffness balance and a low amount of a hexane extractable fraction, to a process for its preparation, articles made therefrom and uses thereof. The heterophasic polyolefin composition comprises a matrix comprising a propylene homo- and/or copolymer, and an elastomeric ethylene/alpha-olefin phase dispersed in the matrix, the heterophasic polyolefin composition comprising monomer units derived from an oligomeric diene compound, wherein the heterophasic polyolefin composition has a tensile modulus of at least 1600 MPa, measured according to ISO 527-2, a puncture energy determined in instrumented falling weight at 23 °C according to ISO 6603-2 of at least 15.0 J, a Charpy notched impact strength of at least 4.0 kJ/m 2 , determined according to ISO 179/1eA:2000 at 23 °C, and a MFR (2.16 kg, 230 °C, ISO 1133) of at least 50 g/10min. The heterophasic polyolefin composition may be used for any conversion processes for thermoplastic polymers, especially injection moulding.
摘要:
The present invention relates to a heterophasic polyolefin composition having improved flowability and impact strength but also an excellent impact/stiffness balance and a low amount of a hexane extractable fraction, to a process for its preparation, articles made therefrom and uses thereof. The heterophasic polyolefin composition comprises a matrix comprising a propylene homo- and/or copolymer, and an elastomeric ethylene/alpha-olefin phase dispersed in the matrix, the heterophasic polyolefin composition comprising monomer units derived from an oligomeric diene compound, and having a hexane extractable fraction in an amount of not more than 10 %, measured from compression moulded sheets at 50 °C and 30 min. and an MFR (2.16 kg, 230 °C, ISO 1133) of 8 to 80g/10min. The heterophasic polyolefin composition may be used for extrusion, injection moulding, blow moulding, injection stretch blow moulding, cast film extrusion or thermoforming.