US4362569A
Expired / Lapsed
US
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Sulfided carbonaceous materials and vulcanized and vulcanizable rubber compositions reinforced with such carbonaceous materials
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1981-06-29
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Granted: 1982-12-07
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Expires: 2001-06-29
Abstract
Abstract Sulfided carbonaceous materials suitable for reinforcing such diene rubbers as styrene-butadiene rubber and natural rubber include carbon, sulfided iron dispersed in, intimately associated with and at least partially bonded to the carbon, and hydrogen.
Inventors
- 👤 Jon W. Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:52
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C09C1/58; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C08K3/30; C01; C01P; C01P2002/00; C01P2002/70; C01P2006/00; C01P2006/80
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
55 words
Sulfided carbonaceous material comprising carbon in an amount of about 80% to about 99% by weight; sulfided iron dispersed in, intimately associated with and at least partially bonded to the carbon, in an amount of about 1% to about 15% by weight; and hydrogen in an amount of about 0.1% to about 1.5% by weight.
Claim 2
Dependent Claim
55 words
Sulfided carbonaceous material comprising carbon in an amount of about 80% to about 99% by weight; sulfided iron dispersed in, intimately associated with and at least partially bonded to the carbon, in an amount of about 1% to about 15% by weight; and hydrogen in an amount of about 0.1% to about 1.5% by weight.
Claim 3
Dependent Claim
44 words
The sulfided carbonaceous material of claim 1 wherein carbon comprises an amount of about 90% to about 94% by weight; sulfided iron, an amount of about 3% to about 9% by weight; and hydrogen, an amount of about 0.5% to about 0.8% by weight.
Claim 4
Dependent Claim
67 words
A composition comprising a major amount of diene rubber and a minor amount of sulfided carbonaceous material comprising carbon in an amount of about 80% to about 99%; sulfided iron dispersed in, intimately associated with and at least partially bonded to the carbon, in an amount of about 1% to about 15% by weight; and hydrogen in an amount of about 0.1% to about 1.5% by weight.
Claim 5
Dependent Claim
67 words
A composition comprising a major amount of diene rubber and a minor amount of sulfided carbonaceous material comprising carbon in an amount of about 80% to about 99%; sulfided iron dispersed in, intimately associated with and at least partially bonded to the carbon, in an amount of about 1% to about 15% by weight; and hydrogen in an amount of about 0.1% to about 1.5% by weight.
Claim 6
Dependent Claim
48 words
The composition of claim 3 wherein said diene rubber is styrene-butadiene rubber, said styrene-butadiene rubber comprising an amount of about 90% to about 45% by weight of the composition and said sulfided carbonaceous material comprising an amount of about 5% to about 40% by weight of said composition.
Claim 7
Dependent Claim
58 words
The composition of claim 3 wherein said diene rubber is selected from the group consisting of styrene-butadiene rubber, natural rubber and mixtures thereof, said rubber comprising an amount of about 90% to about 45% by weight of said composition and said sulfided carbonaceous material comprising an amount of about 5% to about 40% by weight of said composition.
Claim 8
Dependent Claim
65 words
A composition comprising a major amount or diene rubber and a minor amount of sulfided carbonaceous material comprising carbon in an amount of about 90% to about 94% by weight; sulfided iron dispersed in, intimately associated with and at least partially bonded to the carbon, in an amount of about 3% to about 9%, and hydrogen in an amount of about 0.5% to about 0.8%.
Claim 9
Dependent Claim
65 words
A composition comprising a major amount or diene rubber and a minor amount of sulfided carbonaceous material comprising carbon in an amount of about 90% to about 94% by weight; sulfided iron dispersed in, intimately associated with and at least partially bonded to the carbon, in an amount of about 3% to about 9%, and hydrogen in an amount of about 0.5% to about 0.8%.
Claim 10
Dependent Claim
48 words
The composition of claim 6 wherein said diene rubber is styrene-butadiene rubber, said styrene-butadiene rubber comprising an amount of about 90% to about 45% by weight of the composition and said sulfided carbonaceous material comprising an amount of about 5% to about 40% by weight of said composition.
Claim 11
Dependent Claim
58 words
The composition of claim 6 wherein said diene rubber is selected from the group consisting of styrene-butadiene rubber, natural rubber and mixtures thereof, said rubber comprising an amount of about 90% to about 45% by weight of said composition and said sulfided carbonaceous material comprising an amount of about 5% to about 40% by weight of said composition.
Claim 12
Dependent Claim
51 words
Pelletized carbonaceous material comprising carbon in an amount of about 80% to about 99%; sulfided iron dispersed in, intimately associated with and at least partially bonded to the carbon, in an amount of about 1% to about 15%; and hydrogen in an amount of about 0.1% to about 1.5% by weight.
Claim 13
Dependent Claim
51 words
Pelletized carbonaceous material comprising carbon in an amount of about 80% to about 99%; sulfided iron dispersed in, intimately associated with and at least partially bonded to the carbon, in an amount of about 1% to about 15%; and hydrogen in an amount of about 0.1% to about 1.5% by weight.
Claim 14
Dependent Claim
24 words
The pelletized carbonaceous material of claim 9 wherein the pellets have a size in the range of about 8 mesh to about 35 mesh.
Claim 15
Dependent Claim
42 words
The pelletized carbonaceous material of claim 9 comprising carbon in an amount of about 80% to about 99%; sulfided iron in an amount of about 1% to about 15%; and hydrogen in an amount of about 0.1% to about 1.5% by weight.
References Cited (Backward Citations)
US3433660A
Cited
US3408164A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-12-06 | 1986-06-07 | 1986-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-06 | 1990-06-07 | 1990-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-06 | 1994-06-07 | 1994-12-07 | $7700.00 | Window Closed / Lapsed |