Patent US3861933A successfully refreshed from Google Patents.
US3861933A
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Asphalt having high adhesion strength and its preparation
Assignee: Kao Corp
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Filing: 1973-03-05
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Granted: 1975-01-21
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Expires: 1993-03-05
Abstract
Abstract Asphalt having a high adhesion strength is prepared by incorporating in asphalt a small amount of an aminoalkyl polyalkoxysilane expressed by the following general formula: WHEREIN R is an alkylene group having 2 to 3 carbon atoms, R'' stands for an alkyl group having one to two carbon atoms and n is an integer of 1 to 2, as antistripping agent.
Inventors
- 👤 Tadashi Doi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:46
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/54; C08K5/544; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; Y; Y10; Y10S; Y10S106/00; Y10S106/90
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
33 words
AN ASPHALT COMPOSITION HAVING A HIGH ADHESION STRENGTH, COMPRISING ROAD-PAVING ASPHALT HAVING MIXED THEREIN FROM 0.3 TO 2% BY WEIGHT, BASED ON THE AMOUNT OF ASPHALT, OF AN AMINOALKYL POLYALKOXYSILANE HAVING THE FORMULA:
Claim 2
Dependent Claim
33 words
AN ASPHALT COMPOSITION HAVING A HIGH ADHESION STRENGTH, COMPRISING ROAD-PAVING ASPHALT HAVING MIXED THEREIN FROM 0.3 TO 2% BY WEIGHT, BASED ON THE AMOUNT OF ASPHALT, OF AN AMINOALKYL POLYALKOXYSILANE HAVING THE FORMULA:
Claim 3
Dependent Claim
42 words
An asphalt composition according to claim 1, in which said aminoalkyl polyalkoxysilane is selected from the group consisting of Beta -aminoethyl- gamma -aminopropyl trimethoxysilane, Beta aminoethyl- gamma -aminopropyl triethoxysilane, gamma -aminopropyl - gamma -aminopropyl trimethoxysilane, gamma -aminopropyl trimethoxysilane and gamma -aminopropyl triethoxysilane.
Claim 4
Independent Claim
36 words
A method for preparing asphalt having a high adhesion strength, which comprise incorporating in road-paving asphalt from 0.3 to 2 percent by weight, based on the amount of asphalt, of an aminoalkyl polyakoxsilane having the formula:
Claim 5
Independent Claim
36 words
A method for preparing asphalt having a high adhesion strength, which comprise incorporating in road-paving asphalt from 0.3 to 2 percent by weight, based on the amount of asphalt, of an aminoalkyl polyakoxsilane having the formula:
References Cited (Backward Citations)
US2570185A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |