EP0298701A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Process for preparation of anorthite sintered body
Assignee: Tokuyama Corp
•
Filing: 1988-07-05
•
Granted: —
•
Expires: 2008-07-05
Abstract
Abstract A anorthite sintered body is obtained by preparing a formed body of at least one powder selected from (i) a calcium type zeolite having an SiO₂/Al₂O₃ molar ratio lower than 3, (ii) an amorphous calcination product obtained by calcining said calcium type zeolite and (iii) a mixture of said calcium type zeolite or said amorphous calcination product and an alkaline earth metal compound, and sintering the formed body at a temperature lower than 1000°C.
Inventors
- 👤 Genji Taga
- 👤 Masaki Noritake
- 👤 Masami Enokuchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 00:31
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/11; C; C04; C04B; C04B35/00; C04B35/01; C04B35/16; C04B35/18; C04B35/195
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
83 words
A process for the preparation of an anorthite sintered body, which comprises preparing a formed body of at least one powder selected from the group consisting of (i) a calcium type zeolite having an SiO₂/Al₂O₃ molar ratio lower than 3, (ii) an amorphous calcination product obtained by calcining said calcium type zeolite and (iii) a mixture of said calcium type zeolite or said amorphous calcination product and an alkaline earth metal compound, and sintering the formed body at a temperature lower than 1000°C.
Claim 2
Dependent Claim
83 words
A process for the preparation of an anorthite sintered body, which comprises preparing a formed body of at least one powder selected from the group consisting of (i) a calcium type zeolite having an SiO₂/Al₂O₃ molar ratio lower than 3, (ii) an amorphous calcination product obtained by calcining said calcium type zeolite and (iii) a mixture of said calcium type zeolite or said amorphous calcination product and an alkaline earth metal compound, and sintering the formed body at a temperature lower than 1000°C.
Claim 3
Dependent Claim
19 words
A preparation process according to Claim 1, wherein the calcium type zeolite is a calcium type of zeolite A.
Claim 4
Dependent Claim
26 words
A preparation process according to claim 1, or claim 2 wherein the alkaline earth metal compound is calcium oxide, magnesium oxide, strontium oxide or barium oxide.
Claim 5
Dependent Claim
19 words
A preparation process according to any one of the preceding claims wherein the sintering temperature is 850 to 950°C.
Claim 6
Dependent Claim
53 words
An anorthite sintered body obtained by sintering a formed body of a calcium type zeolite having an SiO₂/Al₂O₃ molar ratio lower than 3, an amorphous calcination product obtained by calcining said calcium type zeolite or a mixture of said calcium type zeolite or said amorphous calcination product and an alkaline earth metal compound.
Claim 7
Dependent Claim
53 words
An anorthite sintered body obtained by sintering a formed body of a calcium type zeolite having an SiO₂/Al₂O₃ molar ratio lower than 3, an amorphous calcination product obtained by calcining said calcium type zeolite or a mixture of said calcium type zeolite or said amorphous calcination product and an alkaline earth metal compound.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.