US4129450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acetylene vessel filler composition
Assignee: NI Industries Inc
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Filing: 1977-11-09
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Granted: 1978-12-12
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Expires: 1997-11-09
Abstract
Abstract An aqueous slurry composition which is curable at saturated steam pressure and temperature of 360° to 400° F to form a hard porous mass suitable for containing dissolved acetylene gas solutions, comprising lime, crystalline silica, and a thickening agent selected from the group consisting of (a) polyethylene oxide, (b) amorphous glassy silica, (c) a soluble salt of phosphate and a soluble salt of calcium and (d) a soluble salt of phosphate and a neutralizing acid.
Inventors
- 👤 Edith M. Flanigen
- 👤 Brent M. Lok
- 👤 Norbert R. Mumbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:00
CPC Classifications
F; F17; F17C; F17C11/00; F17C11/002; C; C04; C04B; C04B28/00; C04B28/18; C10; C10L; C10L3/00; C10L3/02; C10L3/04
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
71 words
An aqueous slurry composition which is curable at saturated steam pressure and temperature of 360° to 400° F. to form a hard porous mass suitable for containing dissolved acetylene gas solutions, comprising lime, crystalline silica, and a thickening agent selected from the group consisting of (a) polyethylene oxide, (b) a soluble salt of phosphate and a soluble salt of calcium, and (c) a soluble salt of phosphate and a neutralizing acid.
Claim 2
Dependent Claim
71 words
An aqueous slurry composition which is curable at saturated steam pressure and temperature of 360° to 400° F. to form a hard porous mass suitable for containing dissolved acetylene gas solutions, comprising lime, crystalline silica, and a thickening agent selected from the group consisting of (a) polyethylene oxide, (b) a soluble salt of phosphate and a soluble salt of calcium, and (c) a soluble salt of phosphate and a neutralizing acid.
Claim 3
Dependent Claim
22 words
A composition according to claim 1 wherein the lime-to-silica weight ratio is 0.6 to 1.0, and the water-to-solid volume ratio is 88-96%.
Claim 4
Dependent Claim
10 words
A composition according to claim 1 further comprising reinforcing fiber.
Claim 5
Dependent Claim
40 words
A composition according to claim 1 wherein said thickening agent is a soluble salt of phosphate and a soluble salt of calcium, wherein said soluble salt of phosphate is sodium phosphate and said soluble salt of calcium is calcium nitrate.
Claim 6
Dependent Claim
39 words
A composition according to claim 1 wherein said thickening agent is a soluble salt of phosphate and a soluble salt of calcium, wherein the weight ratio of phosphate ion in the phosphate salt to lime is 0.5 to 10%.
Claim 7
Dependent Claim
30 words
A composition according to claim 5 wherein the weight ratio of phosphate ion in the phosphate salt to the calcium ion in the calcium salt is from 1.0 to 1.6.
Claim 8
Dependent Claim
36 words
A composition according to claim 1 wherein said thickening agent is polyethylene oxide and the concentration of polyethylene oxide in said composition is from 0.5 to 5.0 weight percent of the solids weight of said composition.
Claim 9
Dependent Claim
36 words
A composition according to claim 1 wherein the thickening agent is a soluble salt of phosphate and a neutralizing acid, wherein said soluble salt of phosphate is sodium phosphate and said neutralizing acid is nitric acid.
Claim 10
Dependent Claim
37 words
A composition according to claim 1 wherein the thickening agent is a soluble salt of phosphate and a neutralizing acid, wherein the weight ratio of phosphate ion in the phosphate salt to lime is 0.5 to 10%.
Claim 11
Dependent Claim
32 words
A composition according to claim 9 wherein the neutralizing acid is present in sufficient quantity to provide 2.5-3.5 equivalents of hydrogen ion per mole equivalent of phosphate ion in the phosphate salt.
Claim 12
Independent Claim
148 words
A method of forming a hard porous mass suitable for containing dissolved acetylene gas solutions, comprising the steps of: (a) admixing water and a soluble phosphate salt with lime such that the weight ratio of phosphate ion in the phosphate salt to lime is 0.5 to 10 percent and the water is in a stoichiometric amount for slaking of the lime; (b) mixing crystalline silica, additional water and a soluble salt of calcium to the slaked lime admixture of step (a) to form an aqueous slurry wherein the weight ratio of phosphate ion in the phosphate salt to the calcium ion in the calcium salt is from 1.0 to 1.6, the lime-to-silica weight ratio is 0.6 to 1.0 and the water-to-solid volume ratio is 88-96%; and (c) curing the aqueous slurry at saturated steam pressure and temperature of 360° to 400° F. to form said hard porous mass.
Claim 13
Independent Claim
148 words
A method of forming a hard porous mass suitable for containing dissolved acetylene gas solutions, comprising the steps of: (a) admixing water and a soluble phosphate salt with lime such that the weight ratio of phosphate ion in the phosphate salt to lime is 0.5 to 10 percent and the water is in a stoichiometric amount for slaking of the lime; (b) mixing crystalline silica, additional water and a soluble salt of calcium to the slaked lime admixture of step (a) to form an aqueous slurry wherein the weight ratio of phosphate ion in the phosphate salt to the calcium ion in the calcium salt is from 1.0 to 1.6, the lime-to-silica weight ratio is 0.6 to 1.0 and the water-to-solid volume ratio is 88-96%; and (c) curing the aqueous slurry at saturated steam pressure and temperature of 360° to 400° F. to form said hard porous mass.
Claim 14
Independent Claim
147 words
A method of forming a hard porous mass suitable for containing dissolved acetylene gas solutions, comprising the steps of: (a) admixing water and a soluble phosphate salt with lime such that the weight ratio of phosphate ion in the phosphate salt to lime is 0.5 to 10 percent and the water is a stoichiometric amount for slaking of the lime; (b) mixing crystalline silica, additional water and a neutralizing acid to the slaked lime admixture of step a to form an aqueous slurry wherein the neutralizing acid is present in sufficient quantity to provide 2.5-3.5 equivalents to hydrogen ion per mole equivalent of phosphate ion in the phosphate salt, the lime-silica weight ratio is 0.6 to 1.0 and the water-to-solid volume ratio is 88-96%; and (c) curing the aqueous slurry at saturated steam pressure and temperature to 360° to 400° F. to form said hard porous mass.
Claim 15
Independent Claim
147 words
A method of forming a hard porous mass suitable for containing dissolved acetylene gas solutions, comprising the steps of: (a) admixing water and a soluble phosphate salt with lime such that the weight ratio of phosphate ion in the phosphate salt to lime is 0.5 to 10 percent and the water is a stoichiometric amount for slaking of the lime; (b) mixing crystalline silica, additional water and a neutralizing acid to the slaked lime admixture of step a to form an aqueous slurry wherein the neutralizing acid is present in sufficient quantity to provide 2.5-3.5 equivalents to hydrogen ion per mole equivalent of phosphate ion in the phosphate salt, the lime-silica weight ratio is 0.6 to 1.0 and the water-to-solid volume ratio is 88-96%; and (c) curing the aqueous slurry at saturated steam pressure and temperature to 360° to 400° F. to form said hard porous mass.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-11 | 1982-06-12 | 1982-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-11 | 1986-06-12 | 1986-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-11 | 1990-06-12 | 1990-12-12 | $7700.00 | Window Closed / Lapsed |