Patent US4131481A successfully refreshed from Google Patents.
US4131481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer composition
Assignee: BP PLC
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Filing: 1977-03-22
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Granted: 1978-12-26
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Expires: 1997-03-22
Abstract
Abstract This specification relates to foams produced from ion leachable glass and a polycarboxylic acid.
Inventors
- 👤 Paul H. Drake
- 👤 Colin J. Humphris
- 👤 John E. Preedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:18
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/062; C03C4/00; C03C4/0035; C04; C04B; C04B28/00; C04B28/28
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
40 words
A structural foam material comprising the foamed reaction product of the paste-like cement mass obtained upon mixing an ion-leachable glass selected from the group consisting of an aluminosilicate and a fluoroaluminosilicate with a polycarboxylic acid in the presence of water.
Claim 2
Dependent Claim
40 words
A structural foam material comprising the foamed reaction product of the paste-like cement mass obtained upon mixing an ion-leachable glass selected from the group consisting of an aluminosilicate and a fluoroaluminosilicate with a polycarboxylic acid in the presence of water.
Claim 3
Dependent Claim
30 words
A structural foam material according to claim 1 wherein the ion-leachable glass is prepared by fusing a mixture comprising silica, alumina, cryolite and fluorite at a temperature above 950° C.
Claim 4
Dependent Claim
14 words
A structural foam according to claim 1 wherein the polycarboxylic acid is polyacrylic acid.
Claim 5
Dependent Claim
49 words
A process for making structural foam material comprising mixing ion-leachable glass powder selected from the group consisting of an aluminosilicate and a fluoroaluminosilicate with an aqueous solution of a polycarboxylic acid to form a paste-like cement mass and curing said cement mass in the presence of a blowing agent.
Claim 6
Dependent Claim
49 words
A process for making structural foam material comprising mixing ion-leachable glass powder selected from the group consisting of an aluminosilicate and a fluoroaluminosilicate with an aqueous solution of a polycarboxylic acid to form a paste-like cement mass and curing said cement mass in the presence of a blowing agent.
Claim 7
Dependent Claim
29 words
A process according to claim 4 wherein a complexing co-monomer selected from tartaric acid and ethylene diamine tetra acetic acid is added to the cement mass prior to curing.
Claim 8
Dependent Claim
21 words
A process according to claim 4 wherein the blowing agent is selected from air, nitrogen, carbon dioxide and a volatile halohydrocarbon.
Claim 9
Dependent Claim
28 words
A process according to claim 6 wherein the blowing agent carbon dioxide is formed in situ by adding a metal carbonate to the cement mass prior to curing.
Claim 10
Dependent Claim
27 words
A process according to claim 4 wherein hollow spheres of a material selected from glass and plastic resin are incorporated into the cement mass prior to cure.
Claim 11
Dependent Claim
16 words
A process according to claim 4 wherein the cement mass contains additional filler or binder material.
Claim 12
Dependent Claim
14 words
A structural foam material according to claim 1 wherein said foamed product is cured.
Claim 13
Dependent Claim
13 words
A process according to claim 4 wherein said polycarboxylic acid is polyacrylic acid.
References Cited (Backward Citations)
US3560231A
Cited
GB1316129A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-25 | 1982-06-26 | 1982-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-25 | 1986-06-26 | 1986-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-25 | 1990-06-26 | 1990-12-26 | $7700.00 | Window Closed / Lapsed |