08-10-2020 дата публикации
Номер: US20200316545A1
Принадлежит:
A surfactant of formula (I): 1. A surfactant of formula (I):{'br': None, 'sub': 1', 'a', '2', 'b', '2', 'c, 'A-(L)-(CH)-(L)-X \u2003\u2003(I)'}whereinA is a perfluoropolyether;{'sub': 1', '1-6, 'Lis CONR′, wherein R is selected from H and Calkyl;'}a is 0 or 1;b is 0 or an integer between 1 and 10;{'sub': '2', 'Lis a linking group;'}c is 0 or 1; andX is a charged group.2. A surfactant as claimed in claim 1 , wherein said perfluoropolyether comprises any one of (a) a repeat unit of the formula —[CF(CF)CFO]— claim 1 , wherein m is a positive integer claim 1 , (b) a unit of the formula —[CFCFO]—[CF (CF)CFO]— claim 1 , wherein m and n are each 0 or a positive integer claim 1 , with the proviso that m and n are not both 0; and (c) CFCFCFO—[CF(CF)CFO]—CF(CF)— claim 1 , wherein m is a positive integer.3. (canceled)4. (canceled)5. A surfactant as claimed in claim 2 , wherein m is an integer from 1 to 100.6. A surfactant as claimed in claim 1 , wherein a is 0.7. A surfactant as claimed in claim 1 , wherein a is 1 and Lis CONH or CONCH.8. A surfactant as claimed in claim 1 , wherein b is an integer from 1 to 10 claim 1 , more preferably 2 to 3.9. A surfactant as claimed in claim 1 , wherein c is 0.10. A surfactant as claimed in claim 1 , wherein X is a positively charged group.12. (canceled)13. (canceled)14. (canceled)16. A surfactant as claimed in claim 1 , wherein X comprises a zwitterionic group.18. (canceled)19. (canceled)20. (canceled)22. A surfactant as claimed in claim 1 , wherein X comprises a negatively charged group.24. (canceled)25. (canceled)26. (canceled)33. A composition comprising a surfactant as claimed in claim 1 , preferably wherein said composition further comprises a multicharged compound or polymer claim 1 , and more preferably claim 1 , wherein said multicharged compound or polymer is oppositely charged to said surfactant.34. (canceled)35. (canceled)36. (canceled)37. (canceled)38. The composition as claimed in claim 33 , wherein the composition is an ...
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