Solution Process

{
  "id": "MLC-T-ENV-026110",
  "term": "Solution Process",
  "field": "Environment",
  "definition": "1. Process for producing polyvinyl chloride copolymer resin that is characterized by the anhydrous formation of the polymer through precipitation. Polymerization occurs in an organic solvent in the presence of an initiator where vinyl chloride monomer and co-monomers are soluble in the solvent, but the polymer is not. The PVC copolymer is a granule suspended in the solvent, which then precipitates out of solution. Emulsifiers and suspending agents are not used in the solution process. PVC copolymer resins produced using the solution process are referred to as solution resins.\n\n2. Process where both the monomers and the resulting polymers are dissolved in an organic solvent.",
  "references": [
    "40 CFR 63.12005 (CFR 2013)",
    "40 CFR 63.482 (CFR 2018)"
  ],
  "url": "https://mlchart.com/terminology/environment/solution-process/"
}