US4173489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphalt mineral aggregate compositions
Assignee: Texaco Inc
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Filing: 1978-04-12
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Granted: 1979-11-06
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Expires: 1998-04-12
Abstract
Abstract Surfacing compositions are provided which comprise a mixture of a mineral aggregate, such as particulate slag, asphalt, propoxylated asphalt and, optionally, a silane adhesion promoter.
Inventors
- 👤 Wheeler C. Crawford
- 👤 James R. Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:26
CPC Classifications
E; E01; E01C; E01C7/00; E01C7/08; E01C7/18; C; C08; C08L; C08L95/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
73 words
A surfacing composition comprising: (a) 100 parts by weight of a mineral aggregate, (b) about 3 to about 15 parts by weight of an asphalt, (c) about 1 to about 10 parts by weight of a propoxylated asphalt and wherein the said aggregate is coated with a silane adhesion promoter in an amount such that a residual concentration of the said silane on the aggregate is about 0.001 to about 0.01 weight percent.
Claim 2
Dependent Claim
73 words
A surfacing composition comprising: (a) 100 parts by weight of a mineral aggregate, (b) about 3 to about 15 parts by weight of an asphalt, (c) about 1 to about 10 parts by weight of a propoxylated asphalt and wherein the said aggregate is coated with a silane adhesion promoter in an amount such that a residual concentration of the said silane on the aggregate is about 0.001 to about 0.01 weight percent.
Claim 3
Dependent Claim
13 words
The composition of claim 1 wherein the said mineral aggregate is particulate slag.
Claim 4
Dependent Claim
25 words
The composition of claim 1 wherein the said propoxylated asphalt is an asphalt propoxylated with about 2 to about 100 weight percent of propylene oxide.
Claim 5
Dependent Claim
22 words
The surfacing composition of claim 1 wherein the said silane is selected from the group consisting of β-aminoethyl-γ-aminopropyl trimethoxysilane and γ-aminopropyl triethoxysilane.
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) | 1982-11-05 | 1983-05-07 | 1983-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-05 | 1987-05-07 | 1987-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-05 | 1991-05-07 | 1991-11-06 | $7700.00 | Window Closed / Lapsed |