US4055519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Simultaneously foamed resin and magnesium oxychloride cement
Assignee: Individual
•
Filing: 1976-04-19
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Granted: 1977-10-25
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Expires: 1996-04-19
Abstract
Abstract A method is described for making a fire-resistant product of simultaneously foamed magnesium oxychloride cement and synthetic resin. An example is polyurethane foam which, in the process of formation, generates sufficient heat to cure the cement-forming components. The relatively low density products have high heat resistance, unlike resin foams, making them particularly useful for building and construction purposes.
Inventors
- 👤 Henry Clark Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:00
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0066; C04; C04B; C04B28/00; C04B28/30; C04B28/32; C08J9/35; C08J2375/00; C08J2375/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
98 words
In a method of preparing a fireproof material, the steps of mixing a. between 1 and 9 parts by weight on a dry basis of 1. aqueous magnesium chloride having a specific gravity between 21.5 and 22.5° Baume, 2. between 5 and 6.5 pounds magnesium oxide per gallon of aqueous magnesium chloride, and 3. a surfactant with b. one part of the ingredients for synthetic resin foam and reacting the ingredients simultaneously to form a co-foamed product wherein the foam forming ingredient of the resin component is relied upon to produce all of the bubbles in the cofoam.
Claim 2
Dependent Claim
98 words
In a method of preparing a fireproof material, the steps of mixing a. between 1 and 9 parts by weight on a dry basis of 1. aqueous magnesium chloride having a specific gravity between 21.5 and 22.5° Baume, 2. between 5 and 6.5 pounds magnesium oxide per gallon of aqueous magnesium chloride, and 3. a surfactant with b. one part of the ingredients for synthetic resin foam and reacting the ingredients simultaneously to form a co-foamed product wherein the foam forming ingredient of the resin component is relied upon to produce all of the bubbles in the cofoam.
Claim 3
Dependent Claim
12 words
A method as in claim 1 wherein the synthetic resin is polyurethane.
Claim 4
Dependent Claim
32 words
A method as in claim 2 wherein the weight of the cement ingredients on a dry basis has a ratio to the weight of the polyurethane ingredients of between 1.5 and 9.0.
Claim 5
Dependent Claim
15 words
A method as in claim 1 wherein a filler is included in the co-foamed mixture.
Claim 6
Dependent Claim
86 words
Composition of matter comprising simultaneously co-foamed (a) magnesium oxychloride cement formed by mixing magnesium chloride in 21.5 to 22.5° Baume solution, 5 to 6.5 pounds magnesium oxychloride per gallon of magnesium chloride, and surfactant, and (b) synthetic resin in which the cement ingredients are present in an amount between 1 to 9 parts by weight on a dry basis per part of synthetic resin and wherein the foam forming ingredient of the resin component is relied upon to produce all of the bubbles in the cofoam.
Claim 7
Dependent Claim
86 words
Composition of matter comprising simultaneously co-foamed (a) magnesium oxychloride cement formed by mixing magnesium chloride in 21.5 to 22.5° Baume solution, 5 to 6.5 pounds magnesium oxychloride per gallon of magnesium chloride, and surfactant, and (b) synthetic resin in which the cement ingredients are present in an amount between 1 to 9 parts by weight on a dry basis per part of synthetic resin and wherein the foam forming ingredient of the resin component is relied upon to produce all of the bubbles in the cofoam.
Claim 8
Dependent Claim
14 words
A composition of matter as in claim 5 wherein the synthetic resin comprises polyurethane.
Claim 9
Dependent Claim
78 words
In a method of preparing a fire-resistant material, the steps of 1. preparing a mixture of a. aqueous magnesium chloride having a specific gravity between 21.5 and 22.5° Baume, b. a polyol or polyester precursor for polyurethane foam, 2. preparing a mixture of magnesium oxide in an amount between 5 and 6.5 pounds per gallon of magnesium chloride, a surfactant, and an isocyanate-containing precursor for polyurethane foam, 3. reacting the two mixtures to form a co-foamed fire-resistant product.
Claim 10
Dependent Claim
78 words
In a method of preparing a fire-resistant material, the steps of 1. preparing a mixture of a. aqueous magnesium chloride having a specific gravity between 21.5 and 22.5° Baume, b. a polyol or polyester precursor for polyurethane foam, 2. preparing a mixture of magnesium oxide in an amount between 5 and 6.5 pounds per gallon of magnesium chloride, a surfactant, and an isocyanate-containing precursor for polyurethane foam, 3. reacting the two mixtures to form a co-foamed fire-resistant product.
Claim 11
Dependent Claim
19 words
A method as in claim 7 wherein one of said mixtures contains a gaseous foaming agent for polyurethane foam.
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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) | 1980-10-24 | 1981-04-25 | 1981-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-24 | 1985-04-25 | 1985-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-24 | 1989-04-25 | 1989-10-25 | $7700.00 | Window Closed / Lapsed |