US3923311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural polyurethane foam system with an inorganic alkaline sealant suspended therein
Assignee: Madison Management Group Inc
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Filing: 1974-04-18
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Granted: 1975-12-02
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Expires: 1994-04-18
Abstract
Abstract This disclosure teaches a system for placing structurally an inorganic alkaline sealant (such as portland cement) by dispersing the alkaline sealant in a polyurethane foam material. The foam material may be cast and fabricated into bands, gaskets, joint packings and other structural elements which are placed in locations such as joints, cracks or the like where they are needed for sealing or protective functions. The alkaline sealant forms a rocklike mass when exposed to water and also releases alkalinity so as to protect adjacent metal surfaces. Gradual release of the alkalinity sustains protection of the metal surfaces for an extremely long time.
Inventors
- 👤 Irving Tashlick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:59
CPC Classifications
F; F16; F16L; F16L21/00; F16L21/02; F16L21/05; F16L21/025; F16L58/00; F16L58/18; F16L58/185; Y; Y10; Y10S; Y10S277/00; Y10S277/919; Y10S277/935; Y10S277/944
Claims Analysis
Total Claims: 49
Claim 1
Independent Claim
90 words
A process for sealing a space against flow of a fluid therethrough by placing relative a structure a dry hydratable cement, which is reactive with water to hydrate, the process comprising: introducing the hydratable cement into at least one precurser of a urethane material, causing the urethane material to foam and polymerize so as to produce a foamed polyurethane material with the hydratable cement dispered therein, placing the foamed polyurethane material relative the structure, and allowing the foamed polyurethane material to be contacted with water whereby the hydration takes place.
Claim 2
Dependent Claim
90 words
A process for sealing a space against flow of a fluid therethrough by placing relative a structure a dry hydratable cement, which is reactive with water to hydrate, the process comprising: introducing the hydratable cement into at least one precurser of a urethane material, causing the urethane material to foam and polymerize so as to produce a foamed polyurethane material with the hydratable cement dispered therein, placing the foamed polyurethane material relative the structure, and allowing the foamed polyurethane material to be contacted with water whereby the hydration takes place.
Claim 3
Dependent Claim
12 words
The process of claim 1 with the hydratable cement being portland cement.
Claim 4
Dependent Claim
12 words
The process of claim 2 with sand added to the portland cement.
Claim 5
Dependent Claim
13 words
The process of claim 1 with the foamed polyurethane material permeable to water.
Claim 6
Dependent Claim
13 words
The process of claim 2 with the foamed polyurethane material permeable to water.
Claim 7
Dependent Claim
13 words
The process of claim 3 with the foamed polyurethane material permeable to water.
Claim 8
Dependent Claim
19 words
The process of claim 4 with the precurser selected from a group consisting of polyoxyethylene polyols and polyoxypropylene polyols.
Claim 9
Dependent Claim
19 words
The process of claim 5 with the precurser selected from a group consisting of polyoxyethylene polyols and polyoxypropylene polyols.
Claim 10
Dependent Claim
19 words
The process of claim 6 with the precurser selected from a group consisting of polyoxyethylene polyols and polyoxypropylene polyols.
Claim 11
Dependent Claim
17 words
The process of claim 7 with the precurser polyoxypropylene polyols terminating in substantial quantities of ethylene oxide.
Claim 12
Dependent Claim
17 words
The process of claim 8 with the precurser polyoxypropylene polyols terminating in substantial quantities of ethylene oxide.
Claim 13
Dependent Claim
17 words
The process of claim 9 with the precurser polyoxypropylene polyols terminating in substantial quantities of ethylene oxide.
Claim 14
Dependent Claim
17 words
The process of claim 10 with the precurser including a suitable catalyst and a suitable blowing agent.
Claim 15
Dependent Claim
17 words
The process of claim 11 with the precurser including a suitable catalyst and a suitable blowing agent.
Claim 16
Dependent Claim
17 words
The process of claim 12 with the precurser including a suitable catalyst and a suitable blowing agent.
Claim 17
Dependent Claim
13 words
The process of claim 13 with the precurser including a surface active agent.
Claim 18
Dependent Claim
13 words
The process of claim 14 with the precurser including a surface active agent.
Claim 19
Dependent Claim
13 words
The process of claim 15 with the precurser including a surface active agent.
Claim 20
Dependent Claim
40 words
The process of claim 16 with the precurser added to and mixed with a suitable isocyanate, the mixture introduced into a suitable mold wherein it foams and polymerizes to produce the foamed polyurethane material with the hydratable cement dispersed therein.
Claim 21
Dependent Claim
40 words
The process of claim 17 with the precurser added to and mixed with a suitable isocyanate, the mixture introduced into a suitable mold wherein it foams and polymerizes to produce the foamed polyurethane material with the portland cement dispersed therein.
Claim 22
Dependent Claim
42 words
The process of claim 18 with the precurser added to and mixed with a suitable isocyanate, the mixture introduced into a suitable mold wherein it foams and polymerizes to produce the foamed polyurethane material with the portland cement and sand dispersed therein.
Claim 23
Dependent Claim
23 words
The process of claim 19 with the isocyanate selected from a group consisting of toluene diisocyanate, 4,4''-diphenyl methane diisocyanate and polyphenylene polymethylene polyisocyanate.
Claim 24
Dependent Claim
24 words
The process of claim 20 with the isocyanate selected from a group consisting of toluene diisocyanate, 4, 4''-diphenyl methane diisocyanate and polyphenylene polymethylene polyisocyanate.
Claim 25
Dependent Claim
23 words
The process of claim 21 with the isocyanate selected from a group consisting of toluene diisocyanate, 4,4''-diphenyl methane diisocyanate and polyphenylene polymethylene polyisocyanate.
Claim 26
Dependent Claim
22 words
The process of claim 22 with the blowing agent a hydrocarbon derivative containing at least one fluorine atom and the mold heated.
Claim 27
Dependent Claim
22 words
The process of claim 23 with the blowing agent a hydrocarbon derivative containing at least one fluorine atom and the mold heated.
Claim 28
Dependent Claim
22 words
The process of claim 24 with the blowing agent a hydrocarbon derivative containing at least one fluorine atom and the mold heated.
Claim 29
Dependent Claim
84 words
A process for sealing a joint between nonmetallic earthen materials with a dry hydratable cement, which is reactive with water to hydrate, the process comprising: introducing the hydratable cement into at least one precurser of a urethane material, causing the urethane material to foam and polymerize so as to produce a foamed polyurethane material with the hydratable cement dispersed therein, placing the foamed polyurethane material in the joint, and allowing the foamed polyurethane material to be contacted with water whereby the hydration takes place.
Claim 30
Dependent Claim
84 words
A process for sealing a joint between nonmetallic earthen materials with a dry hydratable cement, which is reactive with water to hydrate, the process comprising: introducing the hydratable cement into at least one precurser of a urethane material, causing the urethane material to foam and polymerize so as to produce a foamed polyurethane material with the hydratable cement dispersed therein, placing the foamed polyurethane material in the joint, and allowing the foamed polyurethane material to be contacted with water whereby the hydration takes place.
Claim 31
Dependent Claim
12 words
The process of claim 28 with the hydratable cement being portland cement.
Claim 32
Dependent Claim
12 words
The process of claim 29 with sand added to the portland cement.
Claim 33
Dependent Claim
13 words
The process of claim 28 with the foamed polyurethane material permeable to water.
Claim 34
Dependent Claim
13 words
The process of claim 29 with the foamed polyurethane material permeable to water.
Claim 35
Dependent Claim
13 words
The process of claim 30 with the foamed polyurethane material permeable to water.
Claim 36
Dependent Claim
125 words
A process for sealing a joint of a pipe line made of a nonmetallic earthen material and having a bell and a spigot with a dry hydratable cement, which is reactive with water to hydrate thereby forming an alkali releasing substance, the method comprising: introducing the hydratable cement into at least one precurser of a urethane material, causing the urethane material to foam and polymerize so as to produce a foamed polyurethane material with the hydratable cement dispersed therein, forming a band of the foamed polyurethane material, positioning the band between the spigot and the bell, engaging the band in the joint by inserting the spigot into the bell, and allowing the foamed polyurethane material to be contacted with water whereby the hydration takes place.
Claim 37
Dependent Claim
125 words
A process for sealing a joint of a pipe line made of a nonmetallic earthen material and having a bell and a spigot with a dry hydratable cement, which is reactive with water to hydrate thereby forming an alkali releasing substance, the method comprising: introducing the hydratable cement into at least one precurser of a urethane material, causing the urethane material to foam and polymerize so as to produce a foamed polyurethane material with the hydratable cement dispersed therein, forming a band of the foamed polyurethane material, positioning the band between the spigot and the bell, engaging the band in the joint by inserting the spigot into the bell, and allowing the foamed polyurethane material to be contacted with water whereby the hydration takes place.
Claim 38
Dependent Claim
12 words
The process of claim 34 with the hydratable cement being portland cement.
Claim 39
Dependent Claim
12 words
The process of claim 35 with sand added to the portland cement.
Claim 40
Dependent Claim
13 words
The process of claim 34 with the foamed polyurethane material permeable to water.
Claim 41
Dependent Claim
13 words
The process of claim 35 with the foamed polyurethane material permeable to water.
Claim 42
Dependent Claim
13 words
The process of claim 36 with the foamed polyurethane material permeable to water.
Claim 43
Dependent Claim
121 words
A process for protecting from corrosion a pipe joint wiTh metallic components and having a bell and a spigot with a dry hydratable cement, which is reactive with water to hydrate thereby forming an alkali releasing substance, the method comprising: introducing the hydratable cement into at least one precurser of a urethane material, causing the urethane material to foam and polymerize so as to produce a foamed polyurethane material with the hydratable cement dispersed therein, forming a band of the foamed polyurethane material, positioning the band between the spigot and the bell, engaging the band in the joint by inserting the spigot into the bell, and allowing the foamed polyurethane material to be contacted with water whereby the hydration takes place.
Claim 44
Dependent Claim
121 words
A process for protecting from corrosion a pipe joint wiTh metallic components and having a bell and a spigot with a dry hydratable cement, which is reactive with water to hydrate thereby forming an alkali releasing substance, the method comprising: introducing the hydratable cement into at least one precurser of a urethane material, causing the urethane material to foam and polymerize so as to produce a foamed polyurethane material with the hydratable cement dispersed therein, forming a band of the foamed polyurethane material, positioning the band between the spigot and the bell, engaging the band in the joint by inserting the spigot into the bell, and allowing the foamed polyurethane material to be contacted with water whereby the hydration takes place.
Claim 45
Dependent Claim
12 words
The process of claim 40 with the hydratable cement being portland cement.
Claim 46
Dependent Claim
12 words
The process of claim 41 with sand added to the portland cement.
Claim 47
Dependent Claim
13 words
The process of claim 41 with the foamed polyurethane material permeable to water.
Claim 48
Dependent Claim
13 words
The process of claim 41 with the foamed polyurethane material permeable to water.
Claim 49
Dependent Claim
13 words
The process of claim 42 with the foamed polyurethane material permeable to water.
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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) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |