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US 12,655,311 B2Granted
Recycling plastics
AssigneeSortology Ltd
InventorJames Donaldson
Life of this patent
Estimating the term…
Abstract
This invention relates to the use of a surfactant for deinking plastic substrates. The invention also relates to a process for deinking plastic substrates with a deinking solution comprising the surfactant and a base.
Claims19
Use of a surfactant in a process for removing ink from plastic substrates, comprising:
- contacting a plastic substrate with a surfactant for a period of time;
- and
- providing a deinked plastic substrate, wherein the surfactant is a trialkyl hydroxyalkyl ammonium salt.
A process for removing ink from a plastic substrate, wherein the process comprises:
- i) exposing the plastic substrate to an aqueous deinking solution comprising a base and a surfactant to provide a deinked plastic substrate, the surfactant being a trialkyl hydroxyalkyl ammonium salt.
Dependencies are inferred from the claim text.