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US 10,519,259 B2Granted
Low melting PP homopolymer with high content of regioerrors and high molecular weight
AssigneeBorealis AG
InventorsLuigi Resconi, Kristin Reichelt
Life of this patent
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Abstract
Disclosed is a polypropylene homopolymer having a melting temperature Tm of less than 150° C., 2,1 regio-defects of above 2.0% determined by 13C-NMR spectroscopy, and a weight average molecular weight Mw of above 100 kg/mol. Also disclosed are a process for the preparation of the homopolymer and a polypropylene blend containing the homopolymer. Further disclosed are a pipe, sheet, film, fiber, moulded article, and extrusion coating made from the homopolymer or polypropylene blend.
Claims14
A polypropylene homopolymer (H-PP1), having
- a) a melting temperature Tm in the range of 120 to less than 150° C.,
- b) 2,1 erythro regio-defects of above 2.0% and up to 3.3%, as determined by 13C-NMR spectroscopy,
- c) a total amount of defects in the polymer chain defined by the sum of 2,1 erythro regio-defects, 2,1 threo regio-defects, 3,1 regio-defects, and mrrm pentad content of above 2.2% and up to 3.5%, as determined by 13C-NMR spectroscopy, and
- d) a weight average molecular weight Mw in the range of 100 to 2,000 kg/mol.
1 more element
Dependencies are inferred from the claim text.