US4530652A
Expired / Lapsed
US
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Asphalt composition
Assignee: Phillips Petroleum Co
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Filing: 1984-01-12
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Granted: 1985-07-23
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Expires: 2004-01-12
Abstract
Abstract Asphalt compositions having improved physical properties are prepared by blending into an asphalt a high vinyl rubbery polymer such as a conjugated diene/monovinyl aromatic block copolymer wherein the conjugated diene blocks contain at least about 25 percent 1,2 addition (or vinyl unsaturation based on total diene content).
Inventors
- 👤 Ollie G. Buck
- 👤 Floyd E. Naylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:57
CPC Classifications
C; C08; C08L; C08L95/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T442/00; Y10T442/20; Y10T442/2221
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
70 words
An asphalt composition with improved physical properties comprising an asphalt and conjugated diene/monovinyl aromatic block copolymer which is dispersable in asphalt, wherein the copolymer has a vinyl content of at least about 25 percent based on total diene content, and said aromatic block copolymer is present in a minor amount effective to improve at least one of dispersability in asphalt, viscosity, high temperature flow resistance and low temperature break resistance.
Claim 2
Dependent Claim
70 words
An asphalt composition with improved physical properties comprising an asphalt and conjugated diene/monovinyl aromatic block copolymer which is dispersable in asphalt, wherein the copolymer has a vinyl content of at least about 25 percent based on total diene content, and said aromatic block copolymer is present in a minor amount effective to improve at least one of dispersability in asphalt, viscosity, high temperature flow resistance and low temperature break resistance.
Claim 3
Dependent Claim
22 words
An asphalt composition according to claim 1 wherein the conjugated diene-to-monovinyl aromatic monomer ratio can vary from about 50:50 to about 85:15.
Claim 4
Dependent Claim
49 words
An asphalt composition with improved performance properties comprising an asphalt and a minor effective amount of about 10 to about 25 weight percent of a dispersable conjugated diene/monovinyl aromatic block copolymer wherein the copolymer has a vinyl content of at least about 25 percent based on total diene content.
Claim 5
Dependent Claim
49 words
An asphalt composition with improved performance properties comprising an asphalt and a minor effective amount of about 10 to about 25 weight percent of a dispersable conjugated diene/monovinyl aromatic block copolymer wherein the copolymer has a vinyl content of at least about 25 percent based on total diene content.
Claim 6
Dependent Claim
29 words
An asphalt composition according to claim 1 wherein the conjugated diene monomer has 4 to 8 carbon atoms and the monovinyl aromatic monomer has 8 to 12 carbon atoms.
Claim 7
Dependent Claim
29 words
An asphalt composition according to claim 1 wherein the conjugated diene monomer of the block copolymer is selected from butadiene and isoprene and the monovinyl aromatic monomer is styrene.
Claim 8
Dependent Claim
55 words
An asphalt composition comprising an asphalt and about 10-20 weight percent of butadiene/styrene radial teleblock copolymer with the butadiene to styrene monomer ratio from about 50/50 to about 85/15, a percent vinyl unsaturation of about 25-50 percent, based on total diene content, and a number of average molecular weight between about 150,000 to about 250,000.
Claim 9
Dependent Claim
55 words
An asphalt composition comprising an asphalt and about 10-20 weight percent of butadiene/styrene radial teleblock copolymer with the butadiene to styrene monomer ratio from about 50/50 to about 85/15, a percent vinyl unsaturation of about 25-50 percent, based on total diene content, and a number of average molecular weight between about 150,000 to about 250,000.
Claim 10
Dependent Claim
17 words
An asphalt composition according to claim 6 wherein the weight percent of copolymer is about 15 percent.
Claim 11
Dependent Claim
17 words
An article of manufacture comprising an asphalt composition according to claim 6 coated on a non-woven fabric.
Claim 12
Dependent Claim
12 words
An asphalt composition according to claim 6 wherein the composition contains fillers.
Claim 13
Dependent Claim
13 words
An asphalt composition according to claim 6 wherein the composition contains mineral aggregates.
Claim 14
Dependent Claim
68 words
A method for producing asphalt compositions suitable for use as a roofing material or as a waterproofing membrane which comprises admixing a copolymer as defined in claim 1 with an asphalt to improve the performance properties of said asphalt, wherein said copolymer is added in a minor amount effective to improve at least one of dispersability in asphalt, viscosity, high temperature flow resistance and low temperature break resistance.
Claim 15
Dependent Claim
25 words
A method according to claim 11 wherein the copolymer is a butadiene/styrene copolymer and the amount ranges from about 10 to about 25 weight percent.
Claim 16
Dependent Claim
35 words
A method for producing asphalt compositions suitable for use as a roofing material or as a water proofing membrane which comprises admixing about 10-25 weight percent of a copolymer of claim 6 with an asphalt.
Claim 17
Dependent Claim
26 words
A method according to claim 13 wherein the weight percent of copolymer in asphalt is about 15 percent and the copolymer is a butadiene/styrene block copolymer.
Claim 18
Dependent Claim
33 words
An article of manufacture suitable for use as a roofing material or as a water proofing membrane which comprises a coating of a rubber-modified asphalt composition of claim 6 on a non-woven fabric.
Claim 19
Dependent Claim
89 words
An asphalt composition comprising an asphalt and at least about 10 weight percent of a dispersable conjugated diene/monovinyl aromatic radial teleblock copolymer with the conjugated diene monomer having 4 to 8 carbon atoms and the monovinyl aromatic monomer having 8 to 12 carbon atoms, the conjugated diene/monovinyl aromatic monomer ratio from about 50/50 to about 85/15, a percent vinyl unsaturation of at least above 25 percent based on total diene content, and a weight average molecular weight (Mw)/number average molecular weight (Mn) ratio in the range of about 100,000-500,000/75,000-400,000.
Claim 20
Dependent Claim
89 words
An asphalt composition comprising an asphalt and at least about 10 weight percent of a dispersable conjugated diene/monovinyl aromatic radial teleblock copolymer with the conjugated diene monomer having 4 to 8 carbon atoms and the monovinyl aromatic monomer having 8 to 12 carbon atoms, the conjugated diene/monovinyl aromatic monomer ratio from about 50/50 to about 85/15, a percent vinyl unsaturation of at least above 25 percent based on total diene content, and a weight average molecular weight (Mw)/number average molecular weight (Mn) ratio in the range of about 100,000-500,000/75,000-400,000.
Claim 21
Dependent Claim
41 words
An asphalt composition according to claim 16 wherein the radial teleblock copolymer is butadiene/styrene with the monomer weight ratio in the range of about 60/40 to about 70/30, and a vinyl content of about 40 percent based on total diene content.
Claim 22
Dependent Claim
58 words
An asphalt composition comprising an asphalt and at least about 10 weight percent of a conjugated diene/monovinyl aromatic block copolymer with a vinyl content of at least about 25 percent based on total diene content and of the type to improve at least one of dispersability in asphalt, viscosity, high temperature flow resistance and low temperature break resistance.
Claim 23
Dependent Claim
58 words
An asphalt composition comprising an asphalt and at least about 10 weight percent of a conjugated diene/monovinyl aromatic block copolymer with a vinyl content of at least about 25 percent based on total diene content and of the type to improve at least one of dispersability in asphalt, viscosity, high temperature flow resistance and low temperature break resistance.
Claim 24
Dependent Claim
55 words
A method for producing asphalt compositions suitable for use as a roofing material or as a waterproofing membrane, which comprises admixing a copolymer as defined in claim 16 with an asphalt in a minor amount effective to improve at least one of dispersability in asphalt, viscosity, high temperature flow resistance and low temperature break resistence.
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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) | 1988-07-22 | 1989-01-21 | 1989-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-22 | 1993-01-21 | 1993-07-23 | $3760.00 | Window Closed / Lapsed |
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