US3668168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moldable metal powder compositions containing an elastomer and silica aquasols
Assignee: EIDP Inc
•
Filing: 1970-08-07
•
Granted: 1972-06-06
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Expires: 1990-08-07
Abstract
Abstract Compositions of metal powder aggregate or metal powder aggregate/refractory mixtures, a siliceous binder, and an elastomeric material useful in the manufacture of metallic shapes or as a metallic filler compound.
Inventors
- 👤 James M Self
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:30
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/622; C04B35/626; C04B35/63; C04B35/6303; C04B35/6316
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
17 words
The moldable metallic composition of claim 1, wherein the metal powder aggregate is iron or stainless steel.
Claim 2
Dependent Claim
42 words
a lithium stabilized cOlloidal silica aquasol having a SiO2: Li2O mole ratio of from 4:1 to 25:1 an average particle diameter ranging from 1 to 150 millimicrons, a pH of from 10.5 to 12.0 and 1 to 25 weight percent solids, and
Claim 3
Dependent Claim
122 words
a positively charged metal oxide coating colloidal silica aquasol having a particle size of from 4 to 15 millimicrons, a pH of from 3.0 to 6.0 and from 10 to 50 weight percent solids; and b. at least 2 parts by weight, based on the weight of the total composition, a latex emulsion of an elastomeric material present in the amount of 25-65 weight percent of the emulsion; and wherein said aggregate consists essentially of metal powder aggregates or metal powder aggregate/refractory mixtures, the metal powder aggregate being selected from the group consisting of iron, copper, aluminum, their respective alloys and mixtures thereof and the metal powder aggregate/refractory mixtures containing a major amount of metal powder and a minor amount of refractory.
Claim 4
Dependent Claim
21 words
The moldable metallic composition of claim 1, wherein the silica aquasol of the binder is an alkali stabilized colloidal silica aquasol.
Claim 5
Dependent Claim
52 words
The moldable metallic composition of claim 1, wherein the elastomeric material of the binder is a chloroprene polymer emulsion wherein said emulsion has polymer particles of approximately 1,200 A, an emulsion/polymer specific gravity of approximately 1.10/1,23, a pH of from 9.0 to 11.0 and solids content of 50 to 60 weight percent.
Claim 6
Dependent Claim
9 words
An article of the cured composition of claim 1.
Claim 7
Dependent Claim
17 words
A laminated article comprising independently set and integrally bonded layers of the cured composition of claim 5.
Claim 8
Dependent Claim
14 words
A reinforced composition of claim 1, wherein reinforcing materials are embedded in said composition.
References Cited (Backward Citations)
GB433741A
Cited
US2702425A
Cited
US3024125A
Cited
US3130061A
Cited
US3252917A
Cited
US3385345A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |