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US4333866A
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Asphalt composition
Assignee: Owens Corning Fiberglas Technology Inc
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Filing: 1980-06-16
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Granted: 1982-06-08
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Expires: 2000-06-16
Abstract
Abstract A rubber-modified asphalt composition prepared by reacting asphalt with a rubbery polymer, a polymerizable vinyl aromatic monomer and a polymerizable vinyl aromatic monomer in which the vinyl group is substituted whereby the chemical integration of the rubbery polymer with the asphalt is accelerated by the use of a combination of the polymerizable vinyl aromatic monomer and the substituted vinyl aromatic monomer.
Inventors
- 👤 William E. Uffner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:17
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/02; C10C3/026; C08; C08L; C08L95/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31641; Y10T428/31815
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
72 words
A chemically-modified asphalt composition comprising an asphalt which has been reacted with (1) a polymerizable vinyl aromatic monomer which has the formula: R.sub.1 --C(R.sub.2)═C(R.sub.2)--R.sub.3 wherein R 1 is an aromatic group containing 6 to 12 carbon atoms, R 2 is hydrogen or methyl and R 3 is selected from the group consisting of --CH 2 OH, --CHO, --COX wherein X is halogen, --COOH and --CH 2 CN and (2) a rubbery polymer.
Claim 2
Dependent Claim
72 words
A chemically-modified asphalt composition comprising an asphalt which has been reacted with (1) a polymerizable vinyl aromatic monomer which has the formula: R.sub.1 --C(R.sub.2)═C(R.sub.2)--R.sub.3 wherein R 1 is an aromatic group containing 6 to 12 carbon atoms, R 2 is hydrogen or methyl and R 3 is selected from the group consisting of --CH 2 OH, --CHO, --COX wherein X is halogen, --COOH and --CH 2 CN and (2) a rubbery polymer.
Claim 3
Dependent Claim
65 words
In a method for the preparation of a chemically-modified asphalt wherein an asphalt is reacted with a rubber polymer and a vinyl aromatic monomer, the improvement comprising decreasing the reaction time by using as at least part of said vinyl aromatic monomer or monomer which has the formula: R.sub.1 --C(R.sub.2)═C(R.sub.2)--R.sub.3 wherein R 1 , R 2 and R 3 are as defined in claim 1.
Claim 4
Dependent Claim
39 words
A chemically-modified asphalt composition as defined in claim 1 wherein the reaction also includes an unsubstituted polymerizable vinyl aromatic monomer having the general formula: R.sub.4 --CH═CH.sub.2 wherein R 4 is an aromatic group containing 6 to 12 carbon atoms.
Claim 5
Dependent Claim
40 words
A chemically-modified asphalt composition as defined in claim 1 wherein the rubber polymer is selected from the group consisting of homopolymers of a conjugated diene and copolymers formed of a conjugated diene and at least one ethylenic monomer copolymerizable therewith.
Claim 6
Dependent Claim
31 words
A chemically-modified asphalt composition as defined in claim 4 wherein the ethylenic monomer is selected from the group consisting of styrene, acrylonitrile, methacrylonitrile, acrylic acid, methacrylic acid, hydroxystyrene, aminostyrene and mercaptostyrene.
Claim 7
Dependent Claim
40 words
A chemically-modified asphalt composition as defined in claim 1 wherein the asphalt to be reacted is an asphalt which has been pre-reacted with a modifying agent selected from the group consisting of steam, an oxygen-containing gas, ammonia and organic amines.
Claim 8
Dependent Claim
17 words
A chemically-modified asphalt composition as defined in claim 3 wherein the unsubstituted vinyl aromatic monomer is styrene.
Claim 9
Dependent Claim
17 words
A chemically-modified asphalt composition as defined in claim 1 wherein the vinyl aromatic monomer is cinnamic alcohol.
Claim 10
Dependent Claim
40 words
A chemically-modified asphalt composition as defined in claim 1 wherein the total of the vinyl aromatic monomers used in the reaction is an amount within the range of 0.5 to 40% by weight based on the weight of the asphalt.
Claim 11
Dependent Claim
32 words
A chemically-modified asphalt composition as defined in claim 1 wherein the rubbery polymer is reacted in an amount ranging from 0.5 to 35% by weight based on the weight of the asphalt.
Claim 12
Dependent Claim
17 words
Glass fibers having a coating thereon, said coating comprising a chemically-modified asphalt as defined in claim 1.
Claim 13
Dependent Claim
27 words
Glass fibers as defined in claim 11 wherein the glass fibers are in the form of a bundle and the coating constitutes an impregnant in the bundle.
Claim 14
Dependent Claim
37 words
In a glass fiber reinforced asphalt wherein an asphalt constitutes a continuous phase in which the glass fibers are distributed as reinforcement, the improvement comprising, as the continuous phase, a chemically-modified asphalt as defined in claim 1.
Claim 15
Dependent Claim
47 words
In a glass fiber reinforced asphalt wherein an asphalt constitutes a continuous phase in which glass fibers, having a coating thereon, are distributed through the continuous phase as reinforcement, the improvement comprising glass fibers which have been coated with a chemically-modified asphalt as defined in claim 1.
Claim 16
Dependent Claim
39 words
The improvement of claim 1 wherein said vinyl aromatic monomer includes said monomer of the formula: R.sub.1 --C(R.sub.2)═C(R.sub.2)--R.sub.3 and a monomer of the formula R.sub.4 --CH═CH.sub.2 wherein R 4 is an aromatic group containing 6 to 12 carbon atoms.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1985-06-07 | 1985-12-07 | 1986-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-07 | 1989-12-07 | 1990-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-07 | 1993-12-07 | 1994-06-08 | $7700.00 | Window Closed / Lapsed |