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AssigneeBcd Global Ltd.
InventorsCharles J. Rogers, Thomas V. Opperman, Bradford J. Rogers
Estimating the term…
Methods for the recovery of natural fiber-containing material from waste textile and methods for recovery of monomers and/or oligomers from waste plastics comprise contacting about 10 to about 25 wt % of the waste with about 75 to about 95 wt % of an aqueous reagent, the aqueous reagent comprising at least about 80 wt % water and about 20 wt % or less tetraethylene glycol, based on the water and the tetraethylene glycol, and a base, at a temperature of about 90° C. to about 140° C. for about 20 to about 60 minutes to depolymerize polymers in the wastes. The base is included in the aqueous reagent in an amount effective to depolymerize the polymers.
A method for the recovery of natural fiber-containing material, comprising (a) providing a waste textile comprising natural fiber-containing material and at least one polymer component, and (b) contacting about 10 to about 25 wt % of the waste textile with about 75 to about 95 wt % of an aqueous reagent, the aqueous reagent comprising at least about 80 wt % water and about 20 wt % or less tetraethylene glycol, based on the water and the tetraethylene glycol, and a base, at a temperature of about 90° C. to about 140° C. for about 20 to about 60 minutes to depolymerize and remove the at least one polymer component from the natural fiber-containing material, wherein the base is included in the aqueous reagent in an amount effective to depolymerize the at least one polymer component.
A method for the recovery of monomers and/or oligomers from a waste plastic comprising a waste polymer, comprising (a) providing a waste plastic comprising a waste polymer, and (b) contacting about 10 to about 25 wt % of the waste plastic with about 75 to about 95 wt % of an aqueous reagent, the aqueous reagent comprising at least about 80 wt % water and about 20 wt % or less tetraethylene glycol, based on the water and the tetraethylene glycol, and a base, at a temperature of about 90° C. to about 140° C. for about 20 to about 60 minutes to depolymerize the waste polymer component to monomers and/or oligomers, wherein the base is included in the aqueous reagent in an amount effective to depolymerize the waste polymer.
Dependencies are inferred from the claim text.