US 5,264,400 AGranted

Glass panes for vehicles

AssigneeNippon Sheet Glass Co., Ltd.

InventorsKunio Nakaguchi, Takashi Sunada, Yoshikazu Toshikiyo

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Abstract

Glass for vehicles comprising from 65 to 80% by weight of SiO.sub.2, from 0 to 5% by weight of Al.sub.2 O.sub.3, from 0 to 5% by weight of B.sub.2 O.sub.3, from 0 to 10% by weight of MgO, from 5 to 15% by weight of CaO, from 10 to 18% by weight of Na.sub.2 O, from 0 to 5% by weight of K.sub.2 O, from 5 to 15% by weight in total of MgO and CaO, from 10 to 20% by weight in total of Na.sub.2 O and K.sub.2 O, from 0.1 to 1% by weight of cerium oxide in terms of CeO.sub.2, from 0.2 to 0.6% by weight of iron oxide in terms of Fe.sub.2 O.sub.3, from 0 to 0.005% by weight of CoO, from 0 to 0.01% by weight of NiO, from 0.2 to 3% by weight of Er.sub.2 O.sub.3, and from 0.0003 to 0.005% by weight of Se. The glass assumes bronze while exhibiting excellent ultraviolet and heat absorption.

Claims3

Dependent claims

A bronze glass for vehicles comprising:

from 65 to 80% by weight of SiO.sub.2 ;
from 0 to 5% by weight of Al.sub.2 O.sub.3 ;
from 0 to 5% by weight of B.sub.2 O.sub.3 ;
from 0 to 10% by weight of MgO;
from 5 to 15% by weight of CaO;
from 10 to 18% by weight of Na.sub.2 O;
from 0 to 5% by weight of K.sub.2 O;
from 5 to 15% by weight in total of MgO and CaO;
from 10 to 20% by weight in total of Na.sub.2 O and K.sub.2 O;
from 0.1 to 1% by weight of cerium oxide in terms of CeO.sub.2 ;
from 0.2 to 0.6% by weight of iron oxide in terms of Fe.sub.2 O.sub.3 ;
from 0 to 0.005% by weight of CoO;
from 0 to 0.01% by weight of NiO;
from 0.2 to 3% by weight of Er.sub.2 O.sub.3 ;
and from 0.0003 to 0.005% by weight of Se;
wherein said glass with a thickness of 4 mm has a visible light transmission of at least 70% with the CIE standard illuminant A and a dominant wavelength of 590 nm or longer with the CIE standard illuminant C.

13 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/959,796Filed 13 Oct 1992
Priority: JP 3-26381211 Oct 1991
Granted: 23 Nov 1993
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

C03C 3/095
With 40% to 90% silica, by weight: containing rare earths
C03C 4/085
For glass selectively absorbing radiation of specified wave lengths: for ultraviolet absorbing glass
Y10S 501/904
Optical glass, e.g. silent on refractive index and/or ABBE number: infrared transmitting or absorbing
Y10S 501/905
Optical glass, e.g. silent on refractive index and/or ABBE number: ultraviolet transmitting or absorbing