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US 2025/0145745 A1Published application
High mfr polypropylene for meltblown nonwoven applications
AssigneeW.R. Grace & Co.-Conn.
InventorsLian Bai, Vivek Kalihari, Jonathan Paul Reeds, Jan van Egmond
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Abstract
A polymer composition including a polypropylene polymer having the following characteristics: exhibiting a melt flow rate of greater than about 900 g/10 min; a molecular weight distribution (Mw/Mn) of greater than about 4.5 or 6; a Mz+1/Mw ratio of less than about 8; and a xylene soluble content of less than about 4.0% by weight. Such polymers are useful in meltblown nonwoven applications.
Claims21
1-49. (canceled)
A polymer composition comprising a polypropylene polymer having the following characteristics:
- exhibiting a melt flow rate of greater than about 900 g/10 min;
- a molecular weight distribution (Mw/Mn) of greater than 4.5;
- an Mz+1/Mw ratio of less than about 8;
- and
- a xylene soluble content of less than about 4.0% by weight.
2 more elements
Dependencies are inferred from the claim text.