PREPARATION OF AMPHIPHILIC BLOCK POLYMERS BY INVERSE MICELLAR RADICAL POLYMERIZATION
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United States of America Patent
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Issued Date -
Sep 26, 2024
app pub date -
Jul 6, 2022
filing date -
Jul 13, 2021
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Abstract
The present invention relates to the preparation of block copolymers which are particularly useful as a rheology agent, and which are suitable, inter alia, for oil extraction, which comprises a step of radical polymerization in which the following are brought into contact, in an oily medium:
- monomers dissolved in the oily medium;monomers which are insoluble in the oily medium, in the form of a micellar solution;at least one radical polymerization initiator; andpreferably at least one radical polymerization control agent.
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