PHOSPHATE GLASS AND METHOD OF ITS PRODUCTION Russian patent published in 2017 - IPC C03C3/64 C03B1/00 C03B5/02 

FIELD: chemistry.

SUBSTANCE: glass contains the following components, wt %: P₂O₅ 58.00-70.00; K₂O 8.50-18.50; Al₂O₃ 7.10-8.90; BaO 9.80-11.50; B₂O₃ 3.70-5.20; SiO₂ 1.80-2.30; SnO₂ 1.10-1.25 Au 0.005-0.02 (over 100%). When preparing the charge, a sol synthesis of the gold nanoparticles Au from gold and hydrochloric acid HAuCl₄⋅4H₂O, glutathione, sodium tetrahydroborate NaBH₄, and ethyl alcohol C₂H₅OH. The resulting sol in an amount of 0.005-0.02 wt % is mixed with silica SiO₂ in an amount of 1.80-2.30 wt %, tin oxide SnO₂ in an amount of 1.80-2.30 wt %. The mixture is evaporated in a muffle furnace, the mixture is ground in an agate mortar, the mixture is stirred with potassium carbonate K₂CO₃, aluminium hydroxide Al(OH)₃, barium carbonate, boric acid H₃BO₃ in a quartz vessel, this mixture is added in phosphoric acid H₃PO₄. The glass is brewed in one stage at a temperature of 1380-1420°C, further heat treatment of the produced glass is carried out in a muffle furnace for 3-4 hours at a temperature of 300-350°C.

EFFECT: improved method.

2 cl, 1 ex