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US 2026/0286083 A1Published application
Methods for purifying a reclaimed polymer
OwnerMatthew Christopher Simons, Thomas Farmer +4inventors
InventorsMatthew Christopher Simons, Thomas Farmer, Shrikant Dhodapkar, Yi Ye, Megan E. Donaldson, Alec Y. Wang
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Abstract
Embodiments are directed towards methods for purifying a reclaimed polymer.
Claims10
A method for purifying a reclaimed polymer, the method comprising:
- transferring the reclaimed polymer to a polymer dissolution vessel, wherein the reclaimed polymer comprises a solid;
- dissolving the solid reclaimed polymer in the polymer dissolution vessel with a solvent to make a multi-phase polymer dissolution vessel composition, wherein the polymer dissolution vessel has a temperature from 100° C. to 200° C. and a pressure from 1 bar to 120 bar;
- transferring a first portion of the multi-phase polymer dissolution vessel composition to a solid/liquid separation vessel to remove a first contaminant and make a solid/liquid separation vessel composition, wherein the solid/liquid separation vessel has a temperature from 100° C. to 200° C. and a pressure from 20 bar to 235 bar, wherein the solid/liquid separation vessel includes a filtration vessel, a sorptive separation vessel, or both;
- transferring the solid/liquid separation vessel composition to an extraction vessel to remove a first targeted portion of the solvent and a second soluble contaminant to make an extraction vessel composition, wherein the extraction vessel has a temperature from 160° C. to 300° C. and a pressure from 30 bar to 300 bar;
- and
- transferring the extraction vessel composition to a polymer concentration vessel to remove a second targeted portion of the solvent and a third soluble contaminant to make a purified reclaimed polymer.
3 more elements
A method for purifying a reclaimed polymer, the method comprising:
- transferring a solid reclaimed polymer to a polymer dissolution vessel, wherein the reclaimed polymer includes a first reclaimed polymer and a second reclaimed polymer;
- dissolving the solid reclaimed polymer in the polymer dissolution vessel with a solvent to make a multi-phase polymer dissolution vessel composition, wherein the polymer dissolution vessel has a temperature from 100° C. to 200° C. and a pressure from 1 bar to 120 bar such that the polymer dissolution vessel is configured to operate between a cloud point of the first reclaimed polymer and a cloud point of the second reclaimed polymer in the multi-phase polymer dissolution vessel composition;
- transferring a portion of the multi-phase polymer dissolution vessel composition to a filtration vessel to remove a first contaminant and a first soluble contaminant and make a filtration vessel composition, wherein the filtration vessel has a temperature from 100° C. to 200° C. and a pressure from 20 bar to 235 bar;
- transferring the filtration vessel composition to an extraction vessel to remove a first targeted portion of the solvent and a second soluble contaminant to make an extraction vessel composition, wherein the extraction vessel has a temperature from 160° C. to 300° C. and a pressure from 30 bar to 300 bar;
- and
- transferring the extraction vessel composition to a polymer concentration vessel to remove a second targeted portion of the solvent and a third soluble contaminant to make a purified reclaimed polymer.
3 more elements
Dependencies are inferred from the claim text.