Patent ID: 11912931
Assignee: YPF TECNOLOGÍA S.A.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A surfactant comprising a terpolymer of:
a first non-ionic monomer;
a second non-ionic monomer; and
an ionic monomer,
wherein the first non-ionic monomer is a poly(ethylene glycol) methyl ether methacrylate having a number-average molecular weight (Mn) selected from 480 g/mol, 500 g/mol and 950 g/mol and the second non-ionic monomer is a hydrophobic monomer, the molar ratio of first non-ionic monomer to total monomer is between 0.3 and 0.5, the molar ratio of second non-ionic monomer to total monomer is between 0.4 and 0.8 and the molar ratio of ionic monomer to total monomer is between 0.01 and 0.15.