Tokyo Tanabe Company, Ltd.

Toshiba Monofrax Co., Ltd.

Saint-gobain Tm K.k.

Shinji Tsuchiya

Kimio Hirata

Shigeo Endo

Kozo Hiratsuka

Masato Kamibayashi

Hiroshi Sugiyama

Nobuyuki Yasuda

Koichi Kazama

Yasuo Misu

Itaru Hashimoto

Akira Itoh

Shozo Seo

Yoshizo Orimo

Atsushi Fukuzaki

Koya Abe

Susumu Tsuchiya

The present invention provides a high alumina fused cast refractory that is easily produced and has low porosity and high corrosion resistance, and a method of producing the same. The high alumina fused cast refractory of the present invention has the following chemical composition: 95.0 mass % to 99.5 mass % AlO, 0.20 mass % to 1.50 mass % SiO, 0.05 mass % to 1.50 mass % BO, 0.05 mass % to 1.20 mass % MgO and balance. The method of producing the high alumina fused cast refractory of the present invention includes obtaining a mixture by mixing an AlOsource material, a SiOsource material, a BOsource material and an MgO source material, and fusing the mixture.

High alumina fused cast refractory and method of producing same

High-zirconia fused refractories consist essentially of 85-96 wt % of ZrO.sub.2, 3-8 wt % of SiO.sub.2, 0.1-2 wt % of Al.sub.2 O.sub.3, 0.05-3 wt % of B.sub.2 O.sub.3, 0.05-3 wt % of BaO, SrO and MgO in total, 0.05 wt % or more of Na.sub.2 O, 0.05-0.6 wt % of Na.sub.2 O and K.sub.2 O in total, and 0.3 wt % or less of Fe.sub.2 O.sub.3 and TiO.sub.2 in total, and does not substantially contain P.sub.2 O.sub.5 and/or CuO.

High-zirconia fused refractories

Indoline compound and 5-HT.sub.3 receptor antagonist containing the same

A method of producing an electrocast brick or other ceramic shape, and the ceramic shape produced thereby, wherein the electrocast brick or other ceramic shape is cast in a mold which is formed, with a predetermined cavity shape and size, of quartz glass particles; the ceramic material of the ceramic shape may be Al.sub.2 O.sub.3 -ZrO.sub.2 -SiO.sub.2 ceramic, Al.sub.2 O.sub.3 -SiO.sub.2 ceramic or other heat meltable ceramic materials.

Method of producing a ceramic shape and that ceramic shape

New 1,4-dihydropyridine derivatives of the formula [I] are provided: ##STR1## wherein R.sup.1 represents a C.sub.1-4 alkyl group or a C.sub.3-6 alkoxyalkyl group, R.sup.2 represents a C.sub.1-8 alkyl group, and A represents an unsubstituted hexamethylene group or a substituted hexamethylene group having one or two C.sub.1-3 alkyl groups. The 1,4-dihydropyridine derivatives have vasodilating and hypotensive activity which is kept for a long period, and are useful in the treatment of cardiovascular disease and hypertention.

1,4-Dihydropyridine derivatives

Novel 1,4-dihydropyridine derivatives of the formula [I] are provided: ##STR1## wherein R.sup.1 represents a C.sub.1-4 alkyl group or a C.sub.3-6 alkoxyalkyl group, R.sup.2 represents hydrogen or halogen, R.sup.3 is either nitro when R.sup.2 is hydrogen, or halogen when R.sup.2 is halogen, R.sup.4 represents a pyridyl group, a phenethyl group, an unsubstituted benzyl group, a substituted benzyl group having one or more suitable substituents, an unsubstituted phenyl group, or a substituted phenyl group having one or more suitable substituents, and A represents an unsubstituted hexamethylene group or a substituted hexamethylene group having one or two C.sub.1-3 alkyl groups. The 1,4-dihydropyridine derivatives have vasodilating and hypotensive activity which is kept for a long period, and are useful in the treatment of cardiovascular disease and hypertension.

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Tokyo, Japan

Shinji Tsuchiya