US4230502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building material additive
Assignee: Akzona Inc
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Filing: 1979-01-09
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Granted: 1980-10-28
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Expires: 1999-01-09
Abstract
Abstract A building material additive comprising an aqueous dispersion of a hydrophobic constituent which is completely wetted with a surfactant, and a water-soluble polymer is disclosed. The dispersion may also contain air void formers, retardants, plasticizers, accelerators, or the like, or mixtures thereof.
Inventors
- 👤 Klaus P. Lustig
- 👤 Louris Kaper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:12
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B20/00; C04B20/10; C04B20/1018; C04B20/1022; C04B2103/00; C04B2103/0045; C04B2103/0053; C04B2103/40; C04B2111/00; C04B2111/20; C04B2111/27
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
57 words
A process for the preparation of a building material additive comprising sequentially wetting a hydrophobic constituent with a surfactant, mixing the resultant product with an air void former and optionally with one or more members selected from the group consisting of retardants, plasticizers, and accelerators, and adding a water-soluble polymer and water to form a stable dispersion.
Claim 2
Dependent Claim
57 words
A process for the preparation of a building material additive comprising sequentially wetting a hydrophobic constituent with a surfactant, mixing the resultant product with an air void former and optionally with one or more members selected from the group consisting of retardants, plasticizers, and accelerators, and adding a water-soluble polymer and water to form a stable dispersion.
Claim 3
Dependent Claim
21 words
The process of claim 1 wherein the hydrophobic constituent is a solid having a particle size between 0.01 and 100 u.
Claim 4
Dependent Claim
17 words
The process of claim 2 wherein the hydrophobic constituent is a mineral which has been made hydrophobic.
Claim 5
Dependent Claim
19 words
The process of claim 2 wherein the hydrophobic constituent is carbon in the form of graphite or lamp black.
Claim 6
Dependent Claim
14 words
The process of claim 2 wherein the hydrophobic constituent is hydrophobic particles of plastic.
Claim 7
Dependent Claim
32 words
The process of claim 1, 2, 3, 4, or 5 wherein the surfactant is selected from the group consisting of sulfonated or sulfated alkyl, alkylaryl, and polyalkylene oxide compounds, and mixtures thereof.
Claim 8
Dependent Claim
15 words
The additive obtained by the process of claim 1, 2, 3, 4, 5, or 6.
Claim 9
Dependent Claim
27 words
The additive of claim 7 wherein the surfactant is selected from the group consisting of sulfonated or sulfated alkyl, alkylaryl, and polyalkylene oxide compounds, and mixtures thereof.
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) | 1983-10-28 | 1984-04-28 | 1984-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-28 | 1988-04-28 | 1988-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-28 | 1992-04-28 | 1992-10-28 | $7700.00 | Window Closed / Lapsed |