US4036661A
Expired / Lapsed
US
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Asphalt mineral aggregate compositions containing silanes as adhesion promoters
Assignee: Chevron USA Inc
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Filing: 1973-02-12
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Granted: 1977-07-19
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Expires: 1993-02-12
Abstract
Abstract Surfacing compositions are provided which comprise a mixture of mineral aggregate, asphalt and a silane of the formula: R.sup.b - R.sup.a - Si - X.sub.3 wherein (a) X represents halogen or alkoxy, (b) R a represents alkylene and (c) R b represents amino, aminoalkylene amino, gamma-glycidoxy, hydrocarbyl, acyloxy or mercapto.
Inventors
- 👤 Robert J. Schmidt, deceased
- 👤 Peter E. Graf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:43
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/54
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
66 words
A surfacing composition comprising (A) 100 parts by weight of a mineral aggregate, (B) 3 to 20 parts by weight of an asphalt and (C) from 0.0001 to 0.10 parts by weight of a silane of the formula: R.sup.b - R.sup.a - Si - X.sub.3 wherein 1. X represents halogen or alkoxy, 2. R a represents alkylene, and 3. R b represents amino or aminoalkylene amino.
Claim 2
Dependent Claim
66 words
A surfacing composition comprising (A) 100 parts by weight of a mineral aggregate, (B) 3 to 20 parts by weight of an asphalt and (C) from 0.0001 to 0.10 parts by weight of a silane of the formula: R.sup.b - R.sup.a - Si - X.sub.3 wherein 1. X represents halogen or alkoxy, 2. R a represents alkylene, and 3. R b represents amino or aminoalkylene amino.
Claim 3
Dependent Claim
45 words
A composition of claim 1 wherein: a. X represents halogen or alkoxy containing 1 to 4 carbon atoms, b. R a represents an alkylene containing from 2 to 4 carbon atoms, and c. R b represents amino or aminoalkyleneamino containing 1 to 3 carbon atoms.
Claim 4
Dependent Claim
14 words
A composition of claim 2 wherein the components of said composition are intimately mixed.
Claim 5
Dependent Claim
27 words
A composition of claim 3 wherein: a. X represents chlorine, methoxy or ethoxy, b. R a represents trimethylene, and c. R b represents amino or aminoethylene amino.
Claim 6
Dependent Claim
13 words
A surfacing composition of claim 3 wherein said silane is aminoethyleneaminopropyl trimethoxy silane.
Claim 7
Dependent Claim
47 words
A composition comprising an asphalt and about 0.001 to about 1.0 percent weight of a silane of the formula: R.sup.b - R.sup.a - Si - X.sub.3 wherein 1. X represents halogen or alkoxy, 2. R a represents alkylene, and 3. R b represents amino or aminoalkylene amino.
Claim 8
Dependent Claim
47 words
A composition comprising an asphalt and about 0.001 to about 1.0 percent weight of a silane of the formula: R.sup.b - R.sup.a - Si - X.sub.3 wherein 1. X represents halogen or alkoxy, 2. R a represents alkylene, and 3. R b represents amino or aminoalkylene amino.
Claim 9
Dependent Claim
46 words
A composition of claim 6 wherein: a. X represents halogen or alkoxy containing 1 to 4 carbon atoms, b. R a represents an alkylene containing from 2 to 4 carbon atoms, and c. R b represents amino or aminoalkylene amino containing 1 to 3 carbon atoms.
Claim 10
Dependent Claim
27 words
A composition of claim 7 wherein: a. X represents chlorine, methoxy or ethoxy, b. R a represents trimethylene, and c. R b represents amino or aminoethylene amino.
Claim 11
Dependent Claim
55 words
An asphalt composition having a high adhesion strength, comprising road-paving asphalt having mixed therein from 0.0005 to 3.33% by weight, based on the amount of asphalt, of an aminoalkyl polyalkoxysilane having the formula: R.sup.b -R.sup.a -Si-X.sub.3 wherein 1. X represents alkoxy, 2. R a represents alkylene, and 3. R b represents amino or aminoalkylene amino.
Claim 12
Dependent Claim
55 words
An asphalt composition having a high adhesion strength, comprising road-paving asphalt having mixed therein from 0.0005 to 3.33% by weight, based on the amount of asphalt, of an aminoalkyl polyalkoxysilane having the formula: R.sup.b -R.sup.a -Si-X.sub.3 wherein 1. X represents alkoxy, 2. R a represents alkylene, and 3. R b represents amino or aminoalkylene amino.
Claim 13
Dependent Claim
24 words
An asphalt composition according to claim 9, in which said aminoalkyl polyalkoxysilane is selected from the group consisting of β-aminoethyl-γ-aminopropyl trimethoxysilane, and γ-aminopropyl triethoxysilane.
Claim 14
Independent Claim
58 words
A method for preparing asphalt having a high adhesion strength, which comprises incorporating in roadpaving asphalt from 0.0005 to 3.33 percent by weight, based on the amount of asphalt, of an aminoalkyl polyalkoxysilane having the formula: R.sup.b -R.sup.a -Si-X.sub.3 wherein 1. X represents alkoxy, 2. R a represents alkylene, and 3. R b represents amino or aminoalkylene amino.
Claim 15
Independent Claim
58 words
A method for preparing asphalt having a high adhesion strength, which comprises incorporating in roadpaving asphalt from 0.0005 to 3.33 percent by weight, based on the amount of asphalt, of an aminoalkyl polyalkoxysilane having the formula: R.sup.b -R.sup.a -Si-X.sub.3 wherein 1. X represents alkoxy, 2. R a represents alkylene, and 3. R b represents amino or aminoalkylene amino.
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) | 1980-07-18 | 1981-01-17 | 1981-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-18 | 1985-01-17 | 1985-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-18 | 1989-01-17 | 1989-07-19 | $7700.00 | Window Closed / Lapsed |