US4452635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic cement composition
Assignee: Mizusawa Industrial Chemicals Ltd
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Filing: 1983-02-28
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Granted: 1984-06-05
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Expires: 2003-02-28
Abstract
Abstract Disclosed is a hydraulic cement composition comprising (A) a water-soluble alkali metal borosilicate or a combination of a water-soluble alkali metal silicate and an alkali metal borate soluble in an alkaline aqueous solution, (B) silicon polyphosphate, (C) an alkali metal silicofluoride and (D) substantially amorphous barium silicate in which the BaO/SiO2 molar ratio is in the range of from 1/2.5 to 1/6.
Inventors
- 👤 Yoshibumi Noshi
- 👤 Hiroyuki Naito
- 👤 Kiyoshi Takai
- 👤 Masaaki Sugawara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:44
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/24; C04B28/26; C04B12/00; C04B12/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
61 words
A hydraulic cement composition comprising (A) a water-soluble alkali metal borosilicate or a combination of a water-soluble alkali metal silicate and an alkali metal borate soluble in an alkaline aqueous solution, (B) silicon polyphosphate, (C) an alkali metal silicofluoride and (D) substantially amorphous barium silicate in which the BaO/SiO 2 molar ratio is in the range of from 1/2.5 to 1/6.
Claim 2
Dependent Claim
61 words
A hydraulic cement composition comprising (A) a water-soluble alkali metal borosilicate or a combination of a water-soluble alkali metal silicate and an alkali metal borate soluble in an alkaline aqueous solution, (B) silicon polyphosphate, (C) an alkali metal silicofluoride and (D) substantially amorphous barium silicate in which the BaO/SiO 2 molar ratio is in the range of from 1/2.5 to 1/6.
Claim 3
Dependent Claim
53 words
A composition as set forth in claim 1, wherein the components (B), (C) and (D) are contained in amounts as solids of 7 to 75 parts by weight, 10 to 80 parts by weight and 10 to 80 parts by weight, respectively, per 100 parts by weight as solids of the component (A).
Claim 4
Dependent Claim
78 words
A composition as set forth in claim 1 or 2, wherein the amorphous barium silicate has a suspension pH value of 9 to 13 as determined with respect to a 5% by weight aqueous suspension and has such a particle size distribution that particles having a size smaller than 10μ occupies 10 to 50% by weight of the total particles and particles having a size larger than 20μ occupy 50 to 90% by weight of the total particles.
Claim 5
Dependent Claim
15 words
A composition as set forth in claim 1, which further comprises (E) crystalline barium metasilicate.
Claim 6
Dependent Claim
36 words
A composition as set forth in claim 4, wherein the component is contained in an amount as solids of 1 to 25 parts by weight per 100 parts by weight as solids of the component (A).
Claim 7
Dependent Claim
24 words
A composition as set forth in claim 1, which further comprises (F) a high condensate of naphthalene-sulfonic acid with formaldehyde or a salt thereof.
Claim 8
Dependent Claim
37 words
A composition as set forth in claim 6, wherein the component (F) is contained in an amount as solids of 0.1 to 20 parts by weight per 100 parts by weight as solids of the component (A).
Claim 9
Dependent Claim
16 words
A composition as set forth in claim 1, which further comprises (G) synthetic or natural zeolite.
Claim 10
Dependent Claim
37 words
A composition as set forth in claim 8, wherein the component (G) is contained in an amount as solids of 1 to 25 parts by weight per 100 parts by weight as solids of the component (A).
Claim 11
Dependent Claim
20 words
A composition as set forth in claim 1 or 2, wherein the normal consistency is 15 to 30% by weight.
Claim 12
Dependent Claim
63 words
A composition as set forth in claim 1, wherein when said composition is mixed with 15 to 30% by weight of water and the resulting slurry is cast on a glass sheet having an inclination angle of 50° after the lapse of time of 30 minutes, the flow value as measured as the flow length for 1 minute is 20 to 120 cm/min.
References Cited (Backward Citations)
US4018616A
Cited
US4169735A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-06-05 | 1987-12-05 | 1988-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-05 | 1991-12-05 | 1992-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-05 | 1995-12-05 | 1996-06-05 | $7700.00 | Window Closed / Lapsed |