Patent US4064224A successfully refreshed from Google Patents.
US4064224A
Expired / Lapsed
US
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Method of making fibrous alkali titanates
Assignee: Panasonic Holdings Corp
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Filing: 1976-01-28
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Granted: 1977-12-20
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Expires: 1996-01-28
Abstract
Abstract A method of making fibrous alkali titanates comprising the steps of preparing a mixture including a titanium compound and an alkali metal compound in a molar ratio of 1.0 to 8.0 in terms of TiO2:M2O (M: Na, K, Rb, Cs), heating said mixture at a temperature of 1200 DEG to 1600 DEG C to the molten (liquid) phase, cooling the thus heated mixture to room temperature , and washing the thus treated product. This method is advantageous because fibrous alkali titanates of large ratio of length to diameter can be easily produced in high yield.
Inventors
- 👤 Takashi Kawamata
- 👤 Tsuneo Inoue
- 👤 Eiichi Hirota
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:45
CPC Classifications
C; C01; C01G; C01G23/00; C01G23/003; C01G23/005; C01P; C01P2002/00; C01P2002/02; C01P2004/00; C01P2004/10; C01P2004/54; C01P2004/60; C01P2004/61; C01P2006/00; C01P2006/60
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
96 words
A method of making fibrous alkali titanates consisting essentially of: preparing a molten mixture including a titanium compound and an alkali metal compound in a molar ratio of 1.0 to 8.0 in terms of TiO 2 :M 2 O by heating, at a temperature of 1200° to 1600° C, a powder mixture including said titanium compound and said alkali metal compound in said molar ratio, M designating one or more elements selected from the group consisting of Na, K, Rb and Cs; cooling the thus heated mixture to room temperature; and washing the thus treated product.
Claim 2
Independent Claim
96 words
A method of making fibrous alkali titanates consisting essentially of: preparing a molten mixture including a titanium compound and an alkali metal compound in a molar ratio of 1.0 to 8.0 in terms of TiO 2 :M 2 O by heating, at a temperature of 1200° to 1600° C, a powder mixture including said titanium compound and said alkali metal compound in said molar ratio, M designating one or more elements selected from the group consisting of Na, K, Rb and Cs; cooling the thus heated mixture to room temperature; and washing the thus treated product.
Claim 3
Dependent Claim
56 words
A method according to claim 1, wherein said titanium compound is TiO 2 , Ti 2 O 3 , H 4 TiO 4 , H 2 TiO 3 , Ti(OH) 4 , TiOSO 4 , TiCl 2 , TiCl 3 , TiCl 4 , Ti(SO 4 ) 2 or Ti 2 (SO 4 ) 3 .
Claim 4
Dependent Claim
32 words
A method according to claim 1, wherein said titanium compound is TiO 2 , Ti 2 O 3 , H 4 TiO 4 , H 2 TiO 3 or Ti(OH) 4 .
Claim 5
Dependent Claim
35 words
A method according to claim 1, wherein said alkali metal compound is M 2 O, MOH, M 2 CO 3 , MNO 3 , MHCO 3 , M 2 SO 4 , MCl or MF.
Claim 6
Dependent Claim
27 words
A method according to claim 1, wherein said alkali metal compound is M 2 O, MOH, M 2 CO 3 , MNO 3 or MHCO 3 .
Claim 7
Dependent Claim
30 words
A method according to claim 1, wherein said mixture includes titanium and alkali metal in a molar ratio of 3.0 to 6.0 in terms of TiO 2 :M 2 O.
Claim 8
Dependent Claim
16 words
A method according to claim 1, wherein aid heating temperature is from 1200° to 1400° C.
Claim 9
Dependent Claim
15 words
A method according to claim 1, wherein said cooling rate is less than 1600° C/hr.
Claim 10
Dependent Claim
26 words
A method according to claim 1, which further consists essentially of the step of re-heating said washed product at a temperature of 1000° to 1500° C.
Claim 11
Dependent Claim
22 words
A method according to claim 9, wherein said mixture includes titanium and alkali metal in a molar ratio of 1.0 to 2.0.
Claim 12
Dependent Claim
16 words
A method according to claim 9, wherein said re-heating temperature is from 1200° to 1400° C.
Claim 13
Dependent Claim
18 words
A method according to claim 1, which further consists essentially of splattering the step of the heated mixture.
Claim 14
Dependent Claim
22 words
A method according to claim 12, wherein the mixture includes titanium and alkali metal in a molar ratio of 1.0 to 6.0.
Claim 15
Dependent Claim
16 words
A method according to claim 12, wherein said heating temperature is from 1200° to 1400° C.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-19 | 1981-06-20 | 1981-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-19 | 1985-06-20 | 1985-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-19 | 1989-06-20 | 1989-12-20 | $7700.00 | Window Closed / Lapsed |