	US 12,435,200 B2
	Method for decontaminating recycled plastic
Andrés Fullana Font, San Vicente del Raspeig (ES); Andrea Cabanes Gil, San Vicente del Raspeig (ES); and Oksana Horodytska, San Vicente del Raspeig (ES)
Assigned to UNIVERSIDAD DE ALICANTE, Alicante (ES)
Appl. No. 17/757,325
Filed by Universidad de Alicante, San Vicente del Raspeig (ES)
PCT Filed Dec. 14, 2020, PCT No. PCT/ES2020/070785 § 371(c)(1), (2) Date Jun. 14, 2022, PCT Pub. No. WO2021/123475, PCT Pub. Date Jun. 24, 2021.
Claims priority of application No. ES201931143 (ES), filed on Dec. 20, 2019.
Prior Publication US 2023/0050476 A1, Feb. 16, 2023
Int. Cl. C08J 11/08 (2006.01); B29B 9/02 (2006.01); B29B 9/16 (2006.01)

CPC C08J 11/08 (2013.01) [B29B 9/02 (2013.01); B29B 2009/168 (2013.01)]

13 Claims

1. A method for decontaminating recycled plastic comprising the following steps:

separating the recycled plastic by type of material;

grinding the separated plastic to reduce a size of the material to flake or powder;

washing, rinsing and drying the material;

decontaminating the material;

wherein decontaminating the material comprises:

extracting contaminants from the material with a water-soluble solvent having a boiling point greater than 180° C.; and

rinsing the decontaminated material with water at room temperature;

separating the solvent from the water; and

decontaminating the separated solvent and the separated water in a continuous process to enable recirculation and reuse of the separated solvent and the separated water; and

wherein the step of decontaminating the material is carried out independently from a recycling process such that the recycled plastic can be plastic recycled by other methods.