US 12,110,441 B2
Surfactant
Xin Li, Babraham (GB); Clive A. Smith, Babraham (GB); Alexandra Clay, Haverhill (GB); and Colin Pilkington, London (GB)
Assigned to SPHERE FLUIDICS LIMITED, Cambridge (GB)
Appl. No. 16/768,121
Filed by SPHERE FLUIDICS LIMITED, Babraham (GB)
PCT Filed Nov. 29, 2018, PCT No. PCT/GB2018/053452
§ 371(c)(1), (2) Date May 29, 2020,
PCT Pub. No. WO2019/106366, PCT Pub. Date Jun. 6, 2019.
Claims priority of application No. 1719846 (GB), filed on Nov. 29, 2017.
Prior Publication US 2020/0316545 A1, Oct. 8, 2020
Int. Cl. C09K 23/18 (2022.01); B01D 11/04 (2006.01); B01D 17/04 (2006.01); B01D 17/12 (2006.01); B01L 3/00 (2006.01); C08G 65/00 (2006.01); C09K 23/00 (2022.01); C09K 23/16 (2022.01)
CPC C09K 23/18 (2022.01) [B01D 11/0492 (2013.01); B01D 11/0496 (2013.01); B01D 17/045 (2013.01); B01D 17/12 (2013.01); B01L 3/5021 (2013.01); C08G 65/007 (2013.01); C09K 23/007 (2022.01); C09K 23/16 (2022.01)] 13 Claims
 
1. A surfactant of formula (I):
A-(L1)a-(CH2)b-(L2)c-X  (I)
wherein
A is a perfluoropolyether, wherein said perfluoropolyether comprises a repeat unit of the formula -[CF(CF3)CF2O]m—, wherein m is an integer from 10 to 100;
L1 is CONR′, wherein R′ is selected from H and C1-6 alkyl;
a is 0 or 1;
b is 0 or an integer between 1 and 10;
L2 is a linking group;
c is 0 or 1; and
X is selected from:
(a) any one of

OG Complex Work Unit Chemistry
wherein R3 is selected from C1-6 alkyl, and (CH2)dO(CH2CH2O)eRx, wherein Rx is H or C1-6 alkyl, d is a positive integer from 2 to 6, and e is 0 or a positive integer from 1 to 100; R4 is selected from C1-6 alkyl; and W− is a counter ion; (b)-any one of

OG Complex Work Unit Chemistry
wherein R1 and R2 are independently selected from C1-6 alky; R4 is selected from C1-6 alkyl; Z is —(CH2)rO(CH2CH2O)g(CH2)s—Y-(L2)c-(CH2)b-(L1)a-A, wherein r is a positive integer from 2 to 6, g is 0 or a positive integer, s is 0 or a positive integer from 2 to 6, Y is

OG Complex Work Unit Chemistry
wherein R1 and R2 are independently selected from H and C1-6 alkyl; R4 is selected from C1-6 alkyl; and W− is a counter ion.