US 12,227,616 B2
Fluoropolyether group-containing polymer and production method therefor
Ryusuke Sakoh, Annaka (JP)
Assigned to SHIN-ETSU CHEMICAL CO., LTD., Tokyo (JP)
Appl. No. 17/616,299
Filed by SHIN-ETSU CHEMICAL CO., LTD., Tokyo (JP)
PCT Filed May 26, 2020, PCT No. PCT/JP2020/020636
§ 371(c)(1), (2) Date Dec. 3, 2021,
PCT Pub. No. WO2020/246301, PCT Pub. Date Dec. 10, 2020.
Claims priority of application No. 2019-105865 (JP), filed on Jun. 6, 2019.
Prior Publication US 2022/0306803 A1, Sep. 29, 2022
Int. Cl. C08G 65/337 (2006.01); C08G 65/00 (2006.01); C08G 65/22 (2006.01); C08G 65/323 (2006.01)
CPC C08G 65/337 (2013.01) [C08G 65/007 (2013.01); C08G 65/226 (2013.01); C08G 65/3236 (2013.01)] 8 Claims
 
1. A fluoropolyether group-containing polymer of the general formula (1) below:

OG Complex Work Unit Chemistry
wherein Rf is a monovalent or divalent fluoropolyether group-containing polymer residue, each X is independently a divalent organic group, and α is 1 or 2.