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US Patent 11879057 Process for preparing polypropylene composition

Patent 11879057 was granted and assigned to Borealis on January, 2024 by the United States Patent and Trademark Office.

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Patent Applicant

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Current Assignee

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Patent Jurisdiction

United States Patent and Trademark Office

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Patent Number

Patent Inventor Names

Pauli Leskinen0

Luca Boragno0

Date of Patent

January 23, 2024

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Patent Application Number

166406540

Date Filed

September 6, 2018

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Patent Citations

US Patent 10150828 Process for producing propylene terpolymers

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US Patent 10233271 Process for producing propylene polymer compositions

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US Patent 10487203 Polypropylene composition combining low sealing initiation temperature and high melting temperature

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US Patent 10875945 Propylene based terpolymer

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US Patent 11292858 Polypropylene composition combining low sealing initiation temperature and high melting temperature

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US Patent 11414500 Process for preparing polypropylene composition

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US Patent 11292901 Nucleated C3C4 copolymers and nucleated C3C4C2 terpolymers

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US Patent 7557161 Crystalline propylene copolymer compositions having improved sealability and optical properties and reduced solubility

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Patent Primary Examiner

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CPC Code

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Patent abstract

The invention relates to a process for producing a polypropylene composition by sequential polymerization, said polypropylene composition having low sealing initiation temperature (SIT) and high melting point (Tm), thus providing abroad sealing window.

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