US4217259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphaltic concrete compositions comprising diene/vinyl aromatic copolymers
Assignee: Phillips Petroleum Co
•
Filing: 1977-09-30
•
Granted: 1980-08-12
•
Expires: 1997-09-30
Abstract
Abstract Improved asphalt-containing compositions having excellent flexural fatigue test characteristics are prepared by incorporating into the mix during its preparation at least one diene/vinyl aromatic copolymer, said copolymer being a radial teleblock copolymer wherein the teleblock copolymer has a diene/vinyl aromatic weight ratio of about 60/40 to about 90/10 and a weight average molecular weight range of from about 130,000 to 300,000.
Inventors
- 👤 Clarence R. Bresson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:03
CPC Classifications
E; E01; E01C; E01C7/00; E01C7/08; E01C7/18; E01C7/26; E01C7/265; C; C08; C08L; C08L95/00
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
54 words
An asphaltic concrete composition comprising an asphalt, a mineral aggregate, and a radial teleblock copolymer of a conjugated diene and a monovinyl aromatic monomer wherein the teleblock copolymer has a diene/monovinyl aromatic monomer weight ratio of at least about 75/25 to about 90/10 and a weight average molecular weight range of from about 150,000-300,000.
Claim 2
Dependent Claim
54 words
An asphaltic concrete composition comprising an asphalt, a mineral aggregate, and a radial teleblock copolymer of a conjugated diene and a monovinyl aromatic monomer wherein the teleblock copolymer has a diene/monovinyl aromatic monomer weight ratio of at least about 75/25 to about 90/10 and a weight average molecular weight range of from about 150,000-300,000.
Claim 3
Dependent Claim
38 words
A composition according to claim 1 wherein the diene/monovinyl aromatic weight ratio of the teleblock copolymer is within the approximate range 80/20 to 85/15 and the weight average molecular weight is in the approximate range 190,000 to 300,000.
Claim 4
Dependent Claim
25 words
A composition according to claim 1 wherein the conjugated diene is selected from 1,3-butadiene and isoprene or mixtures thereof and the monovinyl monomer is styrene.
Claim 5
Dependent Claim
31 words
A composition according to claim 1 wherein the asphalt and the copolymer are admixed to obtain a homogeneous dispersion whereupon the mineral aggregate is then admixed with the dispersion thus obtained.
Claim 6
Dependent Claim
19 words
A composition according to claim 1 wherein the polymer weight average molecular weight is in the approximate range 130,000-300,000.
Claim 7
Dependent Claim
34 words
A composition according to claim 1 wherein the ingredients of the composition are as follows: ______________________________________
Ingredient Weight Percent
______________________________________
Mineral Aggregate
96.95-77.0
Asphalt 3.0-20.0
Radial Teleblock Copolymer
(2-15 parts per hundred asphalt)
______________________________________
Claim 8
Dependent Claim
35 words
A composition according to claim 1 wherein the ingredients of the composition are as follows: ______________________________________
Ingredient Weight Percent
______________________________________
Mineral Aggregate
95.3-91.2
Asphalt 4.5-8.0
Radial Teleblock Copolymer
0.20-0.80
(5-10 parts per hundred asphalt)
______________________________________
Claim 9
Dependent Claim
34 words
A composition according to claim 2 wherein the ingredients of the composition are as follows: ______________________________________
Ingredient Weight Percent
______________________________________
Mineral Aggregate
96.95-77.0
Asphalt 3.0-20.0
Radial Teleblock Copolymer
(2-15 parts per hundred asphalt)
______________________________________
Claim 10
Dependent Claim
35 words
A composition according to claim 2 wherein the ingredients of the composition are as follows: ______________________________________
Ingredient Weight Percent
______________________________________
Mineral Aggregate
95.3-91.2
Asphalt 4.5-8.0
Radial Teleblock Copolymer
0.20-0.80
(5-10 parts per hundred asphalt)
______________________________________
Claim 11
Dependent Claim
34 words
A composition according to claim 3 wherein the ingredients of the composition are as follows: ______________________________________
Ingredient Weight Percent
______________________________________
Mineral Aggregate
96.95-77.0
Asphalt 3.0-20.0
Radial Teleblock Copolymer
(2-15 parts per hundred asphalt)
______________________________________
Claim 12
Dependent Claim
35 words
A composition according to claim 3 wherein the ingredients of the composition are as follows: ______________________________________
Ingredient Weight Percent
______________________________________
Mineral Aggregate
95.3-91.2
Asphalt 4.5-8.0
Radial Teleblock Copolymer
0.20-0.80
(5-10 parts per hundred asphalt)
______________________________________
Claim 13
Dependent Claim
34 words
A composition according to claim 4 wherein the ingredients of the composition are as follows: ______________________________________
Ingredient Weight Percent
______________________________________
Mineral Aggregate
96.95-77.0
Asphalt 3.0-20.0
Radial Teleblock Copolymer
(2-15 parts per hundred asphalt)
______________________________________
Claim 14
Dependent Claim
15 words
A composition according to claim 4 wherein the ingredients of the composition are as follows:
Claim 15
Dependent Claim
34 words
A composition according to claim 5 wherein the ingredients of the composition are as follows: ______________________________________
Ingredient Weight Percent
______________________________________
Mineral Aggregate
96.95-77.0
Asphalt 3.0-20.0
Radial Teleblock Copolymer
(2-15 parts per hundred asphalt)
______________________________________
Claim 16
Dependent Claim
35 words
A composition according to claim 5 wherein the ingredients of the composition are as follows: ______________________________________
Ingredient Weight Percent
______________________________________
Mineral Aggregate
95.3-91.2
Asphalt 4.5-8.0
Radial Teleblock Copolymer
0.20-0.80
(5-10 parts per hundred asphalt)
______________________________________
Claim 17
Dependent Claim
22 words
A composition according to claim 1 wherein the copolymer has been prepared using a coupling agent selected from silicon tetrachloride and polyepoxide.
Claim 18
Dependent Claim
24 words
A composition according to claim 2 wherein the diene is selected from 1,3-butadiene and isoprene or mixtures thereof and the monovinyl monomer is styrene.
Claim 19
Dependent Claim
21 words
A composition according to claim 3 wherein the copolymer is prepared using a coupling agent selected from silicon tetrachloride and polyepoxide.
Claim 20
Dependent Claim
34 words
A composition according to claim 1 wherein the conjugated diene is 1,3-butadiene, the monovinyl aromatic monomer is styrene and wherein silicon tetrachloride is used as a coupling agent in the preparation of the copolymer.
Claim 21
Dependent Claim
34 words
A composition according to claim 16 wherein the ingredients of the composition are as follows: ______________________________________
Ingredient Weight Percent
______________________________________
Mineral Aggregate
96.95-77.0
Asphalt 3.0-20.0
Radial Teleblock Copolymer
(2-15 parts per hundred asphalt)
______________________________________
Claim 22
Dependent Claim
35 words
A composition according to claim 19 wherein the ingredients of the composition are as follows: ______________________________________
Ingredient Weight Percent
______________________________________
Mineral Aggregate
95.3-91.2
Asphalt 4.5-8.0
Radial Teleblock Copolymer
0.20-0.80
(5-10 parts per hundred asphalt)
______________________________________
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) | 1983-08-12 | 1984-02-11 | 1984-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-12 | 1988-02-11 | 1988-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-12 | 1992-02-11 | 1992-08-12 | $7700.00 | Window Closed / Lapsed |