US3997355A
Expired / Lapsed
US
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Sulfur composition
Assignee: Chevron USA Inc
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Filing: 1974-03-18
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Granted: 1976-12-14
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Expires: 1994-03-18
Abstract
Abstract A sulfur-based aggregate-asphalt composition prepared by a process comprising mixing aggregate with asphalt and a molten sulfur system, wherein the molten sulfur system is made by a method comprising heating a mixture of sulfur and a sulfur plasticizer. Dicyclopentadiene is a preferred material for plasticizing the sulfur. Preferably the sulfur system contains, in addition to the sulfur plasticizer, a fibrous filler such as glass fiber or asbestos, and an inorganic filler such as talc powder.
Inventors
- 👤 Lawrence E. Santucci
- 👤 Robert W. Campbell
- 👤 Gar Lok Woo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:09
CPC Classifications
E; E01; E01C; E01C7/00; E01C7/08; E01C7/18; E01C7/26; E01C7/267; C; C08; C08K; C08K3/00; C08K3/02; C08K3/06; E01C7/262
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
80 words
A sulfur-based aggregate-asphalt composition prepared by a process comprising mixing aggregate with molten asphalt and a molten sulfur system, wherein the sulfur system is prepared by a method comprising heating sulfur at liquid molten sulfur temperatures with a sulfur plasticizer to thereby plasticize the sulfur, and wherein the amount of the sulfur system in the composition is between 11/4 and 25 parts sulfur system per 1 part asphalt, and wherein the sulfur system comprises 50 to 97 weight percent sulfur.
Claim 2
Dependent Claim
80 words
A sulfur-based aggregate-asphalt composition prepared by a process comprising mixing aggregate with molten asphalt and a molten sulfur system, wherein the sulfur system is prepared by a method comprising heating sulfur at liquid molten sulfur temperatures with a sulfur plasticizer to thereby plasticize the sulfur, and wherein the amount of the sulfur system in the composition is between 11/4 and 25 parts sulfur system per 1 part asphalt, and wherein the sulfur system comprises 50 to 97 weight percent sulfur.
Claim 3
Dependent Claim
21 words
A composition in accordance with claim 1 wherein the sulfur system also contains a fibrous filler and an inorganic powder filler.
Claim 4
Dependent Claim
25 words
A composition in accordance with claim 1 wherein the sulfur system contains 1 to 5 weight percent glass fiber or asbestos as a fibrous filler.
Claim 5
Dependent Claim
12 words
A composition in accordance with claim 1 wherein the plasticizer is dicyclopentadiene.
Claim 6
Dependent Claim
38 words
A composition in accordance with claim 4 wherein the sulfur system comprises about 50-97 weight percent sulfur, about 1-10 weight percent dicyclopentadiene, about 1-5 weight percent glass fibers and about 1-20 weight percent of an inorganic particulate filler.
Claim 7
Dependent Claim
46 words
A composition in accordance with claim 2 wherein the sulfur system comprises about 80 to 95 weight percent sulfur, about 1 to 3 weight percent dicyclopentadiene, about 1 to 3 weight percent glass fibers and about 1 to 20 weight percent of an inorganic powder filler.
Claim 8
Dependent Claim
17 words
A composition in accordance with claim 1 wherein the asphalt is 20 to 120 penetration grade asphalt.
Claim 9
Dependent Claim
43 words
A composition in accordance with claim 1 wherein the amount of asphalt is between 0.5 to 10 weight percent, the amount of aggregate is between 60 and 94.5 weight percent, and the amount of plasticized sulfur is between 5 and 30 weight percent.
Claim 10
Dependent Claim
24 words
A composition in accordance with claim 1 wherein the aggregate is mineral aggregate having a size within the range 2 inches to 5 microns.
Claim 11
Dependent Claim
17 words
A composition in accordance with claim 8 wherein the aggregate has less than 10 weight percent fines.
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) | 1979-12-14 | 1980-06-14 | 1980-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-14 | 1984-06-14 | 1984-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-14 | 1988-06-14 | 1988-12-14 | $7700.00 | Window Closed / Lapsed |