US4212909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fireproof barrier coating compositions
Assignee: Wausau Homes Inc
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Filing: 1979-06-18
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Granted: 1980-07-15
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Expires: 1999-06-18
Abstract
Abstract A composition for coating the surface of a substrate, particularly structural members, and providing thereon an adherent, fireproof barrier coating including an aqueous dispersion containing vinyl acetate, titanium dioxide, pumice, zinc oxide, sodium silicate, hydrated magnesium aluminum silicate, a comminuted high temperature fluorocarbon resin, a furan resin, comminuted charcoal, and a dispersing agent.
Inventors
- 👤 William F. Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:48
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/18; C08; C08J; C08J9/00; C08J9/36; C08J9/365; C09D161/00; C09D161/34; C09D171/00; C09D171/08; C09D171/14; Y; Y10; Y10S; Y10S260/00; Y10S260/24; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31942; Y10T428/31949; Y10T428/31957
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
68 words
A method for fireproofing a flammable substrate comprising the steps of applying to the exposable surfaces of the substrate a continuous coating of a composition comprising an aqueous dispersion containing vinyl acetate, titanium dioxide, pumice, zinc oxide, sodium silicate, hydrated magnesium aluminum silicate, a comminuted high temperature fluorocarbon resin, a furan resin, comminuted charcoal, and a dispersing agent, and allowing said coating to cure to a hardened state.
Claim 2
Independent Claim
68 words
A method for fireproofing a flammable substrate comprising the steps of applying to the exposable surfaces of the substrate a continuous coating of a composition comprising an aqueous dispersion containing vinyl acetate, titanium dioxide, pumice, zinc oxide, sodium silicate, hydrated magnesium aluminum silicate, a comminuted high temperature fluorocarbon resin, a furan resin, comminuted charcoal, and a dispersing agent, and allowing said coating to cure to a hardened state.
Claim 3
Dependent Claim
24 words
A method according to claim 1 wherein the thickness of said coating at the time of application is about 30 to about 50 mils.
Claim 4
Dependent Claim
116 words
A method according to claim 2 wherein said aqueous dispersion contains about 2 to about 6 weight % vinyl acetate, about 3 to about 9 weight % titanium dioxide, about 7 to about 22 weight % pumice, about 3 to about 9 weight % zinc oxide, about 10 to about 25 weight % of a 40% aqueous solution of sodium silicate, about 2 to about 7 weight % hydrated magnesium aluminum silicate, about 3 to about 9 weight % of the fluorocarbon resin, about 5 to about 20 weight % of the furan resin, and about 2 to about 7 weight % of the dispersing agent, all based on the total weight of said aqueous dispersion.
Claim 5
Dependent Claim
84 words
A method according to claim 3 wherein said aqueous dispersion contains about 9 weight % of a 40% solution of vinyl acetate, about 7 weight % rutile titanium oxide, about 13 weight % pumice, about 4 weight % zinc oxide, about 20 weight % of the sodium silicate solution, about 3 weight % hydrated magnesium aluminum silicate, about 5 weight % polytetrafluoroethylene, about 9 weight % of the furan resin, about 10 weight % charcoal and about 5 weight % of the dispersing agent.
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) | 1983-07-15 | 1984-01-14 | 1984-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-15 | 1988-01-14 | 1988-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-15 | 1992-01-14 | 1992-07-15 | $7700.00 | Window Closed / Lapsed |