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US 12,747,332 B2Granted
Waste plastic recycling process
AssigneeLG Chem, Ltd.
InventorsGyoungsik Kim, Seog Jae Seo, Gyeongho Seon, Chang Hwan Ju, Danbi Han, Jae Hoon Hoon Choe
Life of this patent
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Abstract
A waste plastic recycling process includes preparing a first solution by dissolving waste plastics in an organic solvent; adding an adsorbent to the first solution; recrystallizing plastics by adding 60 parts by weight or more of a compound having a Hansen solubility parameter (HSP) of 5 to 14 with respect to polycarbonate based on 100 parts by weight of the total weight of the first solution; and collecting the recrystallized plastics. A method for preparing recyclable plastics thereof is also provided.
Claims17
A recycling process of a waste plastic, comprising:
- preparing a first solution by dissolving a waste plastic in an organic solvent at a temperature ranging from 15° C. to 25° C.;
- adding an adsorbent to the first solution;
- recrystallizing a plastic by adding 60 parts by weight or more of a compound having a Hansen solubility parameter (HSP) of 5 to 14 with respect to polycarbonate based on 100 parts by weight of a total weight of the first solution;
- and
- collecting the recrystallized plastic.
2 more elements
Dependencies are inferred from the claim text.