US 12,441,094 B2
Film including polymeric elements interconnecting particles
Bharat R. Acharya, Woodbury, MN (US); Derek J. Dehn, Maplewood, MN (US); Bradley L. Givot, St. Paul, MN (US); Jaewon Kim, Woodbury, MN (US); and Yong K. Wu, Woodbury, MN (US)
Assigned to 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
Filed on Apr. 29, 2024, as Appl. No. 18/649,399.
Application 18/649,399 is a continuation of application No. 17/606,538, granted, now 11,999,143, previously published as PCT/IB2020/054484, filed on May 12, 2020.
Claims priority of provisional application 62/848,287, filed on May 15, 2019.
Prior Publication US 2024/0294002 A1, Sep. 5, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B32B 27/18 (2006.01); B32B 5/12 (2006.01); B32B 5/16 (2006.01); B32B 7/12 (2006.01); B32B 27/08 (2006.01); C08J 5/18 (2006.01)
CPC B32B 27/18 (2013.01) [B32B 5/12 (2013.01); B32B 5/16 (2013.01); B32B 7/12 (2013.01); B32B 27/08 (2013.01); C08J 5/18 (2013.01); B32B 2250/03 (2013.01); B32B 2250/24 (2013.01); B32B 2262/02 (2013.01); B32B 2264/101 (2013.01); B32B 2264/102 (2013.01); B32B 2264/2032 (2020.08); B32B 2264/303 (2020.08); B32B 2264/403 (2020.08); B32B 2307/204 (2013.01); B32B 2307/54 (2013.01); B32B 2307/706 (2013.01); B32B 2605/00 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A film comprising a porous layer comprising a polymeric material and a plurality of particles dispersed therein, the polymeric material comprising a plurality of elongate polymeric elements oriented along substantially a same first direction and interconnecting the particles, wherein a ratio of a volume of the plurality of particles to a volume of the polymeric material is at least 5.