US4737192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory binder, method for making same, and product produced thereby
Assignee: STRATASEAL Inc
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Filing: 1984-10-12
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Granted: 1988-04-12
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Expires: 2004-10-12
Abstract
Abstract A refractory binder including a tackifying agent. The tackifying agent is a montrorillorite clay. The binder is a chromium alumina phosphate mixture with a fluxing agent. The binder may also be a colloidal suspension of alumina, silica or zirconia with montmorillonite clay. The binder is used with refractory fiber to produce a monolithic layer.
Inventors
- 👤 William H. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:37
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/447; B; B05; B05B; B05B7/00; B05B7/0075; C04B28/00; C04B28/34; C04B28/342; C04B35/622; C04B35/626; C04B35/63; C04B35/6303; C04B35/6306; F; F27; F27D; F27D1/00; F27D1/0003; F27D1/0006; F27D1/0009; F27D1/002; C04B2111/00; C04B2111/00034; C04B2111/00146; C04B2111/20; C04B2111/28
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
37 words
An inorganic liquid refractory binder for use in a spray applied refractory fiber process at temperatures in excess of 1500° F., said binder comprising by weight percent: phosphoric acid solution: 60-90% hydrated alumina: 5-30% tackifying agent: 1-8%.
Claim 2
Dependent Claim
37 words
An inorganic liquid refractory binder for use in a spray applied refractory fiber process at temperatures in excess of 1500° F., said binder comprising by weight percent: phosphoric acid solution: 60-90% hydrated alumina: 5-30% tackifying agent: 1-8%.
Claim 3
Dependent Claim
19 words
A refractory binder according to claim 1 further including 0.5 to 5% by weight percent of a chromium compound.
Claim 4
Dependent Claim
12 words
Binder according to claim 2 wherein said chromium compound is chromic oxide.
Claim 5
Dependent Claim
16 words
Binder according to claim 1 further including up to 5% by weight of a fluxing agent.
Claim 6
Dependent Claim
12 words
Binder according to claim 4 wherein said fluxing agent is boric acid.
Claim 7
Dependent Claim
12 words
Binder according to claim 1 wherein said tackifying agent is montmorillonite clay.
Claim 8
Dependent Claim
12 words
Binder according to claim 1 wherein said tackifying agent is bentonite clay.
Claim 9
Dependent Claim
19 words
A refractory material comprising: a plurality of refractory fibers; and a liquid inorganic binder including a phosphate-tackifying agent mixture.
Claim 10
Dependent Claim
19 words
A refractory material comprising: a plurality of refractory fibers; and a liquid inorganic binder including a phosphate-tackifying agent mixture.
Claim 11
Dependent Claim
12 words
Material according to claim 8 wherein said tackifying agent includes montmorillonite clay.
Claim 12
Dependent Claim
13 words
Material according to claim 8 wherein said mixture further includes a chromium compound.
Claim 13
Dependent Claim
13 words
Material according to claim 8 wherein said mixture further includes a fluxing agent.
Claim 14
Dependent Claim
12 words
Material according to claim 11 wherein said fluxing agent is boric acid.
Claim 15
Dependent Claim
11 words
Material according to claim 8 wherein said mixture further includes alumina.
Claim 16
Dependent Claim
38 words
A refractory material comprising: a plurality of refractory fibers; and a liquid inorganic binder including: a chromium alumina phosphate solution; montmorillonite clay in intimate admixture with said solution; and a fluxing agent in intimate admixture with said solution.
Claim 17
Dependent Claim
38 words
A refractory material comprising: a plurality of refractory fibers; and a liquid inorganic binder including: a chromium alumina phosphate solution; montmorillonite clay in intimate admixture with said solution; and a fluxing agent in intimate admixture with said solution.
Claim 18
Dependent Claim
12 words
Material according to claim 14 wherein said fluxing agent includes boric acid.
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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) | 1991-04-12 | 1991-10-12 | 1992-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-12 | 1995-10-12 | 1996-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-12 | 1999-10-12 | 2000-04-12 | $7700.00 | Window Closed / Lapsed |