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US4166752A
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Chemically modified asphalt compositions
Assignee: Owens Corning Fiberglas Technology Inc
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Filing: 1977-11-18
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Granted: 1979-09-04
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Expires: 1997-11-18
Abstract
Abstract Chemically modified asphalt compositions prepared by reaction of asphalt with ammonia, a polyamine or an aromatic diamine. The chemically modified asphalt compositions of this invention are particularly well suited for use in the treatment of glass fibers as reinforcement for asphalt matrices.
Inventors
- 👤 Alfred Marzocchi
- 👤 Michael G. Roberts
- 👤 Charles E. Bolen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:33
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/02; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/25; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
56 words
A chemically modified asphalt composition prepared by reaction, at a temperature ranging from 100° to 500° C., of an asphalt with a nitrogen-containing compound selected from the group consisting of (a) ammonia, (b) a polyalkylene polyamine and (c) an aromatic diamine having the formula: H.sub.2 N--R--NH.sub.2 wherein R is a phenylene group or a naphthalene group.
Claim 2
Dependent Claim
56 words
A chemically modified asphalt composition prepared by reaction, at a temperature ranging from 100° to 500° C., of an asphalt with a nitrogen-containing compound selected from the group consisting of (a) ammonia, (b) a polyalkylene polyamine and (c) an aromatic diamine having the formula: H.sub.2 N--R--NH.sub.2 wherein R is a phenylene group or a naphthalene group.
Claim 3
Dependent Claim
13 words
An asphalt as defined in claim 1 wherein the nitrogen-containing compound is ammonia.
Claim 4
Dependent Claim
51 words
An asphalt as defined in claim 1 wherein the nitrogen-containing compound is a polyalkylene polyamine having the formula: H.sub.2 N--(CH.sub.2).sub.y --NH--(CH.sub.2).sub.2 --NH].sub.a H wherein y is an integer from 2 to 6, z is an integer from 2 to 6 and a is 0 or an integer from 1 to 6.
Claim 5
Dependent Claim
23 words
An asphalt as defined in claim 1 wherein the nitrogen-containing compound is reacted with the asphalt at a temperature ranging from 100°-500° C.
Claim 6
Dependent Claim
30 words
An asphalt as defined in claim 1 wherein the reaction between the asphalt and the nitrogen-containing compound is carried out while the asphalt is dissolved in an inert aromatic solvent.
Claim 7
Dependent Claim
18 words
An asphalt as defined in claim 1 wherein the modified asphalt contains up to 8% nitrogen by weight.
Claim 8
Dependent Claim
24 words
An asphalt as defined in claim 1 wherein the asphalt is a blown asphalt having an oxygen content up to about 5% by weight.
Claim 9
Dependent Claim
35 words
A chemically modified asphalt composition prepared by reaction, at a temperature ranging from 100° to 500° C., of an asphalt with a nitrogen-containing compound selected from the group consisting of ammonia and a polyalkylene polyamine.
Claim 10
Dependent Claim
35 words
A chemically modified asphalt composition prepared by reaction, at a temperature ranging from 100° to 500° C., of an asphalt with a nitrogen-containing compound selected from the group consisting of ammonia and a polyalkylene polyamine.
Claim 11
Dependent Claim
19 words
An asphalt as defined in claim 8 wherein the chemically modified asphalt contains up to 8% nitrogen by weight.
References Cited (Backward Citations)
US2797169A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-09-03 | 1983-03-05 | 1983-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-03 | 1987-03-05 | 1987-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-03 | 1991-03-05 | 1991-09-04 | $7700.00 | Window Closed / Lapsed |