Abstract: Method for the recycling of polyvinyl butyral based on obtaining recycled polyvinyl butyral (PVB) from laminated glass which is shattered and the polyvinyl butyral (PVB) is separated. The sheet obtained is cut into pieces and cleaned to eliminate dirt and foreign matter. The solid state PVB is subjected to a first polyvinyl butyral (PVB) purification stage with a chemical treatment with a first reagent and a final chemical treatment with a second reagent. The obtained purified polyvinyl butyral is suitable to be used in the manufacture of laminated glass.

Abstract: Method for the recycling of polyvinyl butyral based on the obtaining of recycled polyvinyl butyral (PVB) from laminated glass which is then shattered and the polyvinyl butyral (PVB) is separated. The sheet obtained is cut into pieces, then proceeding to a surface cleaning process eliminating the dirt and foreign matter, which comprises: a first polyvinyl butyral (PVB) purification stage by way of a chemical treatment by means of a reagent; a subsequent final chemical treatment stage supplementary to the first stage by means of a reagent, the purification treatment being carried out on the polyvinyl butyral (PVB) in solid state and obtaining totally purified polyvinyl butyral read to be used again in the manufacture of laminated glass.