Non-woven fabric having ethylene/alpha-olefin polymer fibers

US12104301B2 · kind B2 · utility

Assignee

• DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

• Mehmet Demirors · Terneuzen, NL
• Fabricio Arteaga Larios · Sugar Land, US
• Mridula Kapur · Lake Jackson, US
• Philip P. Fontaine · Alvin, US
• David T. Gillespie · Pearland, US
• Yijian Lin · Manvel, US
• Lanhe Zhang · Pearland, US
• Sanjib Biswas · Midland, US
• Eduardo Alvarez · Tarragona, ES
• Aleksandar Stoiljkovic · Wetzikon, CH
• Rajen M. Patel · Lake Jackson, US

Key dates

• Filing date: Nov 20, 2019
• Grant date: Oct 1, 2024
• Expiry date: Feb 2, 2042

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D10B2321/022
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A nonwoven fabric comprises at least one fiber having a first component prepared from at least 75 wt. % of bimodalethylene/alpha-olefin interpolymer composition, wherein the ethylene/alpha-olefin interpolymer composition is characterized by: a density in the range of 0.930 to 0.965 g/cm3, a melt index (I2) in the range of from 10 to 60 g/10 minutes, wherein the I2 is measured according to ASTM D1238, 190 C, 2.16 kg, a molecular weight distribution, expressed as the ratio of the weight average molecular weight to number average molecular weight (Mw(GPC)/Mn(GPC)) as determined by GPC of from 1.5 to 2.6, a tan delta at 1 radian/second of at least 45, a low temperature peak and a high temperature peak on an elution profile via improved comonomer composition distribution (ICCD) procedure, and a full width at half maximum of the high temperature peak is less than 6.0° C.