US 11,702,568 B2
(Per)fluoropolyether derivatives
Roberto Valsecchi, Verdellino (IT); Simonetta Antonella Fontana, Milan (IT); Fabrizio Mutta, Fino Mornasco (IT); and Alberto Zompatori, Milan (IT)
Assigned to SOLVAY SPECIALTY POLYMERS ITALY S.P.A., Bollate (IT)
Filed by SOLVAY SPECIALTY POLYMERS ITALY S.P.A., Bollate (IT)
Filed on Oct. 8, 2020, as Appl. No. 17/66,295.
Application 17/066,295 is a division of application No. 16/302,475, granted, now 10,941,316, issued on Mar. 9, 2021, previously published as PCT/EP2017/061353, filed on May 11, 2017.
Claims priority of application No. 16169767 (EP), filed on May 16, 2016.
Prior Publication US 2021/0024778 A1, Jan. 28, 2021
Int. Cl. C09D 183/12 (2006.01); C08G 77/46 (2006.01); C09D 5/00 (2006.01); C09D 187/00 (2006.01); C08G 65/00 (2006.01); C08G 65/336 (2006.01); C08G 65/331 (2006.01)
CPC C09D 183/12 (2013.01) [C08G 65/007 (2013.01); C08G 65/331 (2013.01); C08G 65/336 (2013.01); C08G 77/46 (2013.01); C09D 5/00 (2013.01); C09D 187/005 (2013.01)] 9 Claims
 
1. A polymer [polymer P] comprising:
at least one (per)fluoropoly ether chain [chain (Rpf)] and
at least two chains [chains (Re)] bonded to opposite sides of said chain (Rpf) wherein at least one chain (Re) comprises a branched alkyl chain interrupted by at least two oxygen atoms [chain (Co)], and two or more alkoxy-silane groups [groups (Si)], and is bonded to chain (Rpf) via a group (B) wherein the group (B) is selected from the group consisting of —CH2—O—, —CH(CF3)—O— and —CH2 (OCH2CH2)n—O— wherein n is an integer from 1 to 15, and wherein chain (Co) is selected from the group consisting of:

OG Complex Work Unit Chemistry

OG Complex Work Unit Chemistry
wherein the symbol (*) indicates the bond with chain group (B) and the symbol (#) indicates the bond with group (Si).