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US 12,570,776 B2Granted
Superior C2C3C4 terpolymer based blown film and C2C3C4 terpolymer
AssigneeBorealis AG
InventorsJingbo Wang, Markus Gahleitner, Klaus Bernreitner, Pauli Leskinen
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Abstract
Blown film made from terpolymers, and terpolymers containing units derived from propylene, ethylene and 1-butene.
Claims15
A blown film made from an ethylene-propylene-1-butene terpolymer including
- a) units derived from ethylene in an amount of 0.8 to 2.8 mol-% with respect the total terpolymer;
- and
- b) units derived from propylene in an amount of 91.6 to 95.8 mol-% with respect the total terpolymer;
- and
- c) units derived from 1-butene in an amount of 3.4 to 5.6 mol-% with respect the total terpolymer,
- d) wherein the units derived from ethylene, propylene and 1-butene add up to 100 mol-% and
- e) a total amount of units derived from ethylene and 1-butene of 4.5 to 8.0 mol-%, and
- f) a molar ratio of units derived from 1-butene versus units derived from ethylene of 1.5 to 5.0;
- and
- g) 2.1 regioinversions in an amount of 0.20 to 0.45 mol-% as determined by 13C-NMR analysis (as described in the experimental part);
- and
- h) a melt flow rate MFR2 (230° C./2.16 kg) measured according to ISO 1133 in the range from 1.5 to 4.5 g/10 min, and
- i) a melting temperature Tm measured by differential scanning calorimetry (DSC) following the equation
- Tm<[150−1.6*(defects)−0.14*(defects)2]° C.,
- wherein ‘defects’ denote the sum of units derived from ethylene, units derived from 1-butene and 2.1 regioinversions, all values in mol-%, and
- wherein the blown film has a sealing initiation temperature (SIT) (as determined by a method described in the experimental part) below 117° C.
13 more elements
An ethylene-propylene-1-butene terpolymer including
- a) units derived from ethylene in an amount of 0.8 to 2.8 mol-% with respect the total terpolymer;
- and
- b) units derived from propylene in an amount of 91.6 to 95.8 mol-% with respect the total terpolymer;
- and
- c) units derived from 1-butene in an amount of 3.4 to 5.6 mol-% with respect the total terpolymer,
- d) wherein the units derived from ethylene, propylene and 1-butene add up to 100 mol-%, and
- e) a total amount of units derived from ethylene and 1-butene of 4.5 to 8.0 mol-%, and
- f) a molar ratio of the units derived from 1-butene versus units derived from ethylene within the range of 1.5 to 5.0;
- and
- g) 2.1 regioinversions in an amount of 0.20 to 0.45 mol-%, as determined by 13C-NMR analysis (as described in the experimental part);
- and
- h) a melt flow rate MFR2 (230° C./2.16 kg) measured according to ISO 1133 in the range from 1.5 to 4.5 g/10 min, and
- i) a melting temperature Tm measured by differential scanning calorimetry (DSC) following the equation
- Tm<[150−1.6*(defects)−0.14*(defects)2]° C.,
- wherein ‘defects’ denote the sum of units derived from ethylene, units derived from 1-butene and 2.1 regioinversions, all values in mol.-%.
12 more elements
Dependencies are inferred from the claim text.