POLYMER DISPERSIONS FOR WAX INHIBITION

• Main Authors: WILSON, David James, DUFILS, Pierre-Emmanuel, HATCHMAN, Kevan
• Format: Patent
• Language: English; French; German
• Published: 07.12.2022
• Subjects: ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; FIRELIGHTERS; FUELS; FUELS NOT OTHERWISE PROVIDED FOR; LIQUEFIED PETROLEUM GAS; LUBRICANTS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL GAS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; POLISHES; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K; TECHNICAL GASES CONTAINING CARBON MONOXIDE; THEIR PREPARATION OR CHEMICAL WORKING-UP

The present invention relates to a process of a process for preparation of a polymer dispersion comprising a step (E) of free radical polymerization in an aqueous medium (M) in the presence of: - at least a pre-polymer (p0) soluble in the medium (M), - at least one free-radical polymerization initiator, and - at least one ethylenically unsaturated hydrophobic monomer (m) which is chosen from an alkyl (meth)acrylate of at least C6, wherein the aqueous medium (M) includes water and at least one water miscible solvent.