Patent ID: 11912934
Assignee: RHODIA OPERATIONS
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A friction reducer formulation comprising friction reducer polymers within the dispersed phase of an inverse emulsion, wherein said inverse emulsion contains a composition C comprising a mixture of:
from 1% to 5% of at least an alkanolamide emulsifier selected from the group consisting of alkyl and alkenyl diethanolamides; and
from 0.01 to 0.5% of a block copolymer, wherein the copolymer is a di-block copolymer comprising:
a block A comprising repeating units derived from N-vinyl pyrrolidone; and
a block B comprising repeating units derived from 2-ethyl-hexyl acrylate, and

wherein % is in mass, based on a total mass of the inverse emulsion containing the composition C.