US 4,055,436 A · Glass for manufacturing white-colored glass-crystalline material

Glass for manufacturing white-colored glass-crystalline material

OwnerNikolai Mikheevich Pavlushkin, Konstantin Timofeevich Bondarev +8inventors

InventorsNikolai Mikheevich Pavlushkin, Konstantin Timofeevich Bondarev, Anatoly Vasilievich Strekalov, Viktor Stepanovich Kozlovsky, Anatoly Gavrilovich Minakov, Tamara Efimovna Golius, Ljudmila Alexeevna Orlova, Pavel Dzhibraelovich Sarkisov, Mikhail Ivanovich Kozmin, Vladimir Anatolievich Minakov

Life of this patent

Estimating the term…

Abstract

Glass characterized by the introduction into its composition of K.sub.2 O amount to 4 to 7% by weight, in place of Na.sub.2 O. Such glass has an increased viscosity at the crystallization temperatures enabling the use of continuous production techniques without distortion of the resultant band.

Claims1

Dependent claims

A glass for manufacturing white-colored glass-crystalline material, consisting essentially of, in per cent by weight:

SiO.sub.2 48-60
Al.sub.2 O.sub.3 5-8
CaO 20-30
MgO 0.8-2.5
MnO 0.5-1.5
Fe.sub.2 O.sub.3 0.1-1
TiO.sub.2 0.2-0.5
F.sub.2 0.5-2
k.sub.2 o 4-7
na.sub.2 O up to 1.5 and
ZnS less than 1.

8 more elements

Dependencies are inferred from the claim text.