	US 12,440,823 B2
	Polymer-based film with balanced properties
Andrew T. Heitsch, Angleton, TX (US); Yijian Lin, Pearland, TX (US); Barbara Bonavoglia, Zurich (CH); Kyle E. Hart, Manvel, TX (US); Mehmet Demirors, Pearland, TX (US); Rou Hua Chou, Singapore (SG); and Manoj Thota, Ann Arbor, MI (US)
Assigned to Dow Global Technologies LLC, Midland, MI (US)
Appl. No. 17/295,264
Filed by Dow Global Technologies LLC, Midland, MI (US)
PCT Filed Nov. 22, 2019, PCT No. PCT/US2019/062750 § 371(c)(1), (2) Date May 19, 2021, PCT Pub. No. WO2020/112526, PCT Pub. Date Jun. 4, 2020.
Claims priority of provisional application 62/773,468, filed on Nov. 30, 2018.
Prior Publication US 2022/0008893 A1, Jan. 13, 2022
Int. Cl. B01J 20/26 (2006.01); A61L 15/24 (2006.01); B01J 20/28 (2006.01); B01J 20/30 (2006.01)

CPC B01J 20/261 (2013.01) [A61L 15/24 (2013.01); B01J 20/28033 (2013.01); B01J 20/3064 (2013.01)]

18 Claims

1. A film comprising:

20.0 weight percent to 69.5 weight percent linear low density polyethylene (LLDPE) based polymer, wherein the LLDPE based polymer comprises

a high density fraction (HDF) from 3.0% to 8.0%, wherein the high density fraction is measured by crystallization elution fractionation (CEF) integration at temperatures from 93° C. to 119° C.,

an I₁₀/I₂ratio from 5.5 to 6.9, wherein I₂is the melt index when measured according to ASTM D 1238 at a load of 2.16 kg and temperature of 190° C. and I10 is the melt index when measured according to ASTM D 1238 at a load of 10 kg and temperature of 190° C., and

a short chain branching distribution (SCBD) of less than or equal to 7.0° C., wherein the short chain branching distribution is measured by CEF full width at half height;

0.0 weight percent to 10.0 weight percent low density polyethylene (LDPE) based polymer; and

30.0 weight percent to 70.0 weight percent pore former.