Expanded polystyrene solubilization method
AssigneeThe Eska Company
InventorsFranck Poutch, Pierre Dalet, José Alcorta
Life of this patent
Estimating the term…
Abstract
The invention relates to a method of solubilizing expanded polystyrene (EPS), in which the EPS is brought into contact with at least one initial solvent, enabling the transition of the EPS from an expanded solid state to the gel state. The aforementioned gel is subsequently treated with at least one complementary solvent that is different from the initial solvent, enabling the solubilization thereof such as to produce a true solution. The invention also relates to the product thus obtained and to the use of said product.
Claims22
Expanded polystyrene (EPS) solubilization method, providing the polystyrene in the form of a true solution, comprising:
- Stage i) bringing the EPS into contact with an amount sufficient of at least one initial solvent to allow the EPS to be changed from an expanded solid state to a gel having a solid phase;
- and
- Stage ii) bringing the gel into contact with an amount sufficient of at least one complementary solvent, distinct from the initial solvent, to solubilize said gel in such a way as to obtain a true solution in which the solid phase is disappeared,
- wherein said true solution is maintained in liquid form and recovered for immediate use or storage.
Dependencies are inferred from the claim text.