US 12,104,301 B2
Non-woven fabric having ethylene/alpha-olefin polymer fibers
Mehmet Demirors, Pearland, TX (US); Fabricio Arteaga Larios, Sugarland, TX (US); Mridula Kapur, Lake Jackson, TX (US); Philip P. Fontaine, Pearland, TX (US); David T. Gillespie, Pearland, TX (US); Yijian Lin, Pearland, TX (US); Lanhe Zhang, Pearland, TX (US); Sanjib Biswas, Manvel, TX (US); Eduardo Alvarez, Tarragona (ES); Aleksandar Stoiljkovic, Waedenswil (CH); and Rajen M. Patel, Lake Jackson, TX (US)
Assigned to DOW GLOBAL TECHNOLOGIES LLC, Midland, MI (US)
Appl. No. 17/293,188
Filed by DOW GLOBAL TECHNOLOGIES LLC, Midland, MI (US)
PCT Filed Nov. 20, 2019, PCT No. PCT/US2019/062336
§ 371(c)(1), (2) Date May 12, 2021,
PCT Pub. No. WO2020/106797, PCT Pub. Date May 28, 2020.
Claims priority of application No. 18382830 (EP), filed on Nov. 20, 2018.
Prior Publication US 2022/0002924 A1, Jan. 6, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. D04H 3/007 (2012.01); C08F 210/16 (2006.01); D01F 6/46 (2006.01); D01F 8/06 (2006.01); D04H 1/4291 (2012.01)
CPC D04H 3/007 (2013.01) [D01F 6/46 (2013.01); D01F 8/06 (2013.01); D04H 1/4291 (2013.01); C08F 210/16 (2013.01); C08F 2500/03 (2013.01); C08F 2500/06 (2013.01); C08F 2500/12 (2013.01); D10B 2321/021 (2013.01); D10B 2321/022 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A nonwoven fabric comprising at least one fiber having a first component prepared from at least 75 wt. % of an ethylene/alpha-olefin interpolymer composition, wherein the ethylene/alpha-olefin interpolymer composition has:
a density in the range of 0.930 to 0.965 g/cm3,
a melt index (12) in the range of from 10 to 60 g/10 minutes, wherein the 12 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 in the range of from 1.5 to 2.6,
a tan delta at 1 radian/second of at least 45, wherein the tan delta is determined at 190° C. over a frequency range from 0.1 to 100 radian/second at five points per decade interval and strain amplitude is constant at 10%,
a low temperature peak and a high temperature peak on an improved comonomer composition distribution (ICCD) elution profile by Crystallization Elution Fractionation, having two distinguishable peaks between 35° C. to 110° C., and
a full width at half maximum of the high temperature peak is less than 6.0° C.