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2 682 279

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(51)

IPC

C03C3/87(2006-01-01)

C03C12/02(2006-01-01)

(21) (22)

Application

2018101165, 2018-01-14

(24)

Start date

2018-01-14

(22)

Actual filing date

2018-01-14

(45)

Published

2019-03-18

(72)

Inventor

Kosyakov Aleksandr ViktorovichNikulin Sergej VladimirovichBudov Vladimir ViktorovichKuligin Sergej VladimirovichIshkov Aleksandr DmitrievichSalnikov Evgenij PavlovichRovovoj Vadim Vitalevich

(73)

Holder

Ooo Sferastek

SODIUM-CALCIUM-SILICATE TRANSPARENT COLORLESS GLASS Russian patent published in 2019 - IPC C03C3/87 C03C12/02

Abstract RU 2682279 C1

FIELD: manufacturing technology.

SUBSTANCE: invention relates to glass for retroreflective microspheres. Glass contains the following components, wt. %: 54.0–70.0 SiO₂; 17.0–30.0 CaO; 7.0–16.0 Na₂O and/or K₂O; 0–5.0 MgO; 0–5.0 Al₂O₃ and not more than 0.1 Fe₂O₃. Glass has a refractive index of more than 1.53, preferably at least 1.539. Surface tension of glass at a temperature of 1300 °C is at least 335 mN/m, and the temperature range of viscosity of glass from 104 Pa*s to 108 Pa*s is not more than 216 °C.

EFFECT: improving the efficiency of retroreflection microballs.

3 cl, 2 tbl

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RU 2 682 279 C1

Authors

Kosyakov Aleksandr Viktorovich

Nikulin Sergej Vladimirovich

Budov Vladimir Viktorovich

Kuligin Sergej Vladimirovich

Ishkov Aleksandr Dmitrievich

Salnikov Evgenij Pavlovich

Rovovoj Vadim Vitalevich

Dates

2019-03-18—Published

2018-01-14—Filed