US 12,325,769 B2
Fluororesin, fluororesin particles, and methods for producing these
Shohei Yumino, Yokkaichi (JP); Tomoya Shimono, Yokkaichi (JP); Kota Sakaguchi, Yokkaichi (JP); Tomonari Nagai, Yokkaichi (JP); Kazunari Iwanaga, Yokkaichi (JP); Masao Tanabiki, Yokkaichi (JP); and Toru Doi, Yokkaichi (JP)
Assigned to TOSOH CORPORATION, Shunan (JP); and NITTO DENKO CORPORATION, Osaka (JP)
Filed by TOSOH CORPORATION, Shunan (JP); and NITTO DENKO CORPORATION, Osaka (JP)
Filed on Sep. 21, 2023, as Appl. No. 18/471,482.
Application 18/471,482 is a division of application No. 17/280,624, granted, now 11,807,702, previously published as PCT/JP2019/038144, filed on Sep. 27, 2019.
Claims priority of application No. 2018-183594 (JP), filed on Sep. 28, 2018; application No. 2019-027318 (JP), filed on Feb. 19, 2019; application No. 2019-037005 (JP), filed on Feb. 28, 2019; and application No. 2019-171553 (JP), filed on Sep. 20, 2019.
Prior Publication US 2024/0059809 A1, Feb. 22, 2024
Int. Cl. C08F 24/00 (2006.01)
CPC C08F 24/00 (2013.01) 10 Claims
OG exemplary drawing
 
1. Resin particles, comprising:
a resin comprising a residue unit of the following formula (1),
wherein the resin particles have a volume average particle diameter of from 5 μm to 500 μm, and wherein the 90% particle diameter of the resin particles is 1000 μm or less,

OG Complex Work Unit Chemistry
wherein Rf1, Rf2, Rf3, and Rf4 are each independently one selected from the group consisting of a fluorine atom, a linear perfluoroalkyl group having 1 to 7 carbon atoms, a branched perfluoroalkyl group having 3 to 7 carbon atoms, and a cyclic perfluoroalkyl group having 3 to 7 carbon atoms, the linear or branched perfluoroalkyl group optionally have an ethereal oxygen atom, Rf1, Rf2, Rf3, and Rf4 may be linked to one another to form a ring having 4 to 8 carbon atoms, and the ring optionally includes an ethereal oxygen atom.