US3900692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods for modifying asphalts and emulsions useful therefor
Assignee: Phillips Petroleum Co
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Filing: 1973-01-08
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Granted: 1975-08-19
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Expires: 1993-01-08
Abstract
Abstract This invention relates to the improvement of the rheological properties of asphalts in addition to the durability of asphalts by modification of the asphaltenes fraction and/or the maltenes fraction of an asphalt by adding thereto elastomers. This may be accomplished by adding either an n-pentane-soluble polymer or an n-petane-soluble polymer or an n-pentane-insoluble polymer or a mixture of the two.
Inventors
- 👤 Fritz S Rostler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:13
CPC Classifications
E; E01; E01C; E01C7/00; E01C7/08; E01C7/35; E01C7/355; C; C08; C08L; C08L95/00; C10; C10C; C10C3/00; C10C3/02; C10C3/026; E01C7/18; E01C7/26; E01C7/265; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31815
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
123 words
A METHOD OF TREATING ASPHALT IN AN ASPHALT-AGGREGATE STRUCTURE, SAID METHOD COMPRISING IMPREGNATING SAID ASPHALTAGGREGATE STRUCTURE BY APPLYING TO THE SURFACE THEREOF AN OIL-IN-WATER EMULSION, THE OIL PHASE BEING FROM ABOUT 10 TO ABOUT 80% BY WEIGHT OF THE EMULSION CONTAINING POLYMER HAVING AN AVERAGE MOLECULAR WEIGHT IN THE RANGE ABOVE 10,000. SAID POLYMER BEING SUBSTANTIALLY INSOLUBLE IN NORMAL PENTANE, SAID POLYMER BEING IN SOLUTION IN SAID OIL, AT A POLYMER CONCENTRATION OF ABOUT 2 TO ABOUT 25% BY WEIGHT OF SAID OIL, SAID ASPHALT AND SAID POLYMER BEING MUTUALLY SOLUBLE IN SAID OIL, SAID OIL HAVING INTIAL BOILING POINT WHICH IS NOT SUBSTANTIALLY BELOW ABOUT 300*C. ST 760MM. HG., AND SAID OIL BEING SUBSTANTIALLY FREE OF ASPHALTENES AND SUBSTANTIALLY SOLUBLE IN N-PENTANE.
Claim 2
Independent Claim
123 words
A METHOD OF TREATING ASPHALT IN AN ASPHALT-AGGREGATE STRUCTURE, SAID METHOD COMPRISING IMPREGNATING SAID ASPHALTAGGREGATE STRUCTURE BY APPLYING TO THE SURFACE THEREOF AN OIL-IN-WATER EMULSION, THE OIL PHASE BEING FROM ABOUT 10 TO ABOUT 80% BY WEIGHT OF THE EMULSION CONTAINING POLYMER HAVING AN AVERAGE MOLECULAR WEIGHT IN THE RANGE ABOVE 10,000. SAID POLYMER BEING SUBSTANTIALLY INSOLUBLE IN NORMAL PENTANE, SAID POLYMER BEING IN SOLUTION IN SAID OIL, AT A POLYMER CONCENTRATION OF ABOUT 2 TO ABOUT 25% BY WEIGHT OF SAID OIL, SAID ASPHALT AND SAID POLYMER BEING MUTUALLY SOLUBLE IN SAID OIL, SAID OIL HAVING INTIAL BOILING POINT WHICH IS NOT SUBSTANTIALLY BELOW ABOUT 300*C. ST 760MM. HG., AND SAID OIL BEING SUBSTANTIALLY FREE OF ASPHALTENES AND SUBSTANTIALLY SOLUBLE IN N-PENTANE.
Claim 3
Dependent Claim
15 words
The method of claim 1 in which the polymer is a poly(styrene)-ended poly(styrene)-poly(diene)-poly(styrene) block copolymer.
Claim 4
Dependent Claim
15 words
The method of claim 1 in which the polymer is polystyrene ended poly(styrene)-poly(butadiene)-poly(styrene) block copolymer.
Claim 5
Dependent Claim
11 words
The method of claim 1 in which the polymer is poly(chloroprene).
Claim 6
Independent Claim
135 words
THE METHOD OF RUBBERIZING ASPHALT IN AN ASPHALT-AGGREGATE PAVEMENT, SAID METHOD COMPRISING IMPREGNATING SAID ASPHALT PAVEMENT BY APPLYING TO THE SURFACE THEREOF AN OIL-INWATER EMULSION, THE OIL PHASE BEING FROM ABOUT 10 TO ABOUT 80% BY WEIGHT OF THE EMULSION CONTAINING A DISSOLVED ELASTOMER, SUBSTANTIALLY INSOLUBLE IN N-PENTANCE, IN AN AMOUNT RANGING BETWEEN ABOUT 2 TO ABOUT 25% BY WEIGHT OF SAID OIL, SAID OIL HAVING AN INITIAL BOILING POINT WHICH IS NOT SUBSTANTIALLY BELOW ABOUT 300*C. AT 760 MM GH. SAID OIL BEING SUBSTANTIALLY FREE OF ASPHALTENES AND SUBSTANTIALLY SOLUBLE IN N PENTANE AND SAID ELASTOMER AND SAID ASPHALT BEING MUTUALLY SOLUBLE IN SAID OIL, THE QUANTITY OF SAID EMULSION APPLIED TO SAID ASPHALT BEING SUFFICIENT TO INCORPORATE SAID ELASTOMER IN SAID ASPHALT TO AT LEAST ABOUT 0.1% BY WEIGHT OF THE SAID ASPHALT.
Claim 7
Independent Claim
135 words
THE METHOD OF RUBBERIZING ASPHALT IN AN ASPHALT-AGGREGATE PAVEMENT, SAID METHOD COMPRISING IMPREGNATING SAID ASPHALT PAVEMENT BY APPLYING TO THE SURFACE THEREOF AN OIL-INWATER EMULSION, THE OIL PHASE BEING FROM ABOUT 10 TO ABOUT 80% BY WEIGHT OF THE EMULSION CONTAINING A DISSOLVED ELASTOMER, SUBSTANTIALLY INSOLUBLE IN N-PENTANCE, IN AN AMOUNT RANGING BETWEEN ABOUT 2 TO ABOUT 25% BY WEIGHT OF SAID OIL, SAID OIL HAVING AN INITIAL BOILING POINT WHICH IS NOT SUBSTANTIALLY BELOW ABOUT 300*C. AT 760 MM GH. SAID OIL BEING SUBSTANTIALLY FREE OF ASPHALTENES AND SUBSTANTIALLY SOLUBLE IN N PENTANE AND SAID ELASTOMER AND SAID ASPHALT BEING MUTUALLY SOLUBLE IN SAID OIL, THE QUANTITY OF SAID EMULSION APPLIED TO SAID ASPHALT BEING SUFFICIENT TO INCORPORATE SAID ELASTOMER IN SAID ASPHALT TO AT LEAST ABOUT 0.1% BY WEIGHT OF THE SAID ASPHALT.
Claim 8
Dependent Claim
14 words
The method of claim 5 in which the polymer is poly(styrene)-ended poly(styrene)-poly(diene)-poly(styrene) block copolymer.
Claim 9
Dependent Claim
14 words
The method of claim 5 in which the polymer is poly(styrene)-ended poly(styrene)-poly(butadiene)-poly(styrene) block copolymer.
Claim 10
Dependent Claim
11 words
The method of claim 5 in which the polymer is poly(chloroprene).
Claim 11
Independent Claim
139 words
A METHOD OF TREATING ASPHALT WHICH COMPRISES APPLYING TO SAID ASPHALT AN OIL-IN-WATER EMULSION COMPRISING AS AN OIL PHASE, A SOLUTION IN OIL OF A POLYMER OR MISTURE OF POLYMERS WHICH ARE SUBSTANTIALLY SOLUBLE IN M-PENTANE AND A POLYMER OR MIXTURE OF POLYMER WHICH ARE SUBSTANTIALLY INSOLUBLE IN NPENTANE AT A POLYMER CONCENTRATION OF ABOUT 2 TO ABOUT 25% BY WEIGHT OF THE OIL, SAID OIL HAVING SOLVENT PROPERTIES FOR ASPHALT AND FOR PENTANE-SOLUBLE POLYMERS AND PENTANE-INSOLUBLE POLYMERS, THE RATIONS OF THE POLYMERS ARE FROM 9 PARTS BY WEIGHT OF POLYMER WHICH ARE SUBSTANTIALLY INSOLUBLE IN N-PENTANE TO 1 PART BY WEIGHT OF POLYMERS WHICH ARE SUBSTANTIALLY SOLUBLE IN N-PENTANE TO A RATIO OF 1 PART BY WEIGHT OF THE POLYMERS SUBSTANTIALLY INSOLUBLE IN N-PENANTANE TO 9 PARTS BY WEIGHT OF THE POLYMERS WHICH ARE SUBSTANTIALLY SOLUBLE IN N-PENTANE.
Claim 12
Independent Claim
139 words
A METHOD OF TREATING ASPHALT WHICH COMPRISES APPLYING TO SAID ASPHALT AN OIL-IN-WATER EMULSION COMPRISING AS AN OIL PHASE, A SOLUTION IN OIL OF A POLYMER OR MISTURE OF POLYMERS WHICH ARE SUBSTANTIALLY SOLUBLE IN M-PENTANE AND A POLYMER OR MIXTURE OF POLYMER WHICH ARE SUBSTANTIALLY INSOLUBLE IN NPENTANE AT A POLYMER CONCENTRATION OF ABOUT 2 TO ABOUT 25% BY WEIGHT OF THE OIL, SAID OIL HAVING SOLVENT PROPERTIES FOR ASPHALT AND FOR PENTANE-SOLUBLE POLYMERS AND PENTANE-INSOLUBLE POLYMERS, THE RATIONS OF THE POLYMERS ARE FROM 9 PARTS BY WEIGHT OF POLYMER WHICH ARE SUBSTANTIALLY INSOLUBLE IN N-PENTANE TO 1 PART BY WEIGHT OF POLYMERS WHICH ARE SUBSTANTIALLY SOLUBLE IN N-PENTANE TO A RATIO OF 1 PART BY WEIGHT OF THE POLYMERS SUBSTANTIALLY INSOLUBLE IN N-PENANTANE TO 9 PARTS BY WEIGHT OF THE POLYMERS WHICH ARE SUBSTANTIALLY SOLUBLE IN N-PENTANE.
Claim 13
Dependent Claim
63 words
The process of claim 9 in which the n-pentane insoluble polymer is a poly(styrene)-ended poly(styrene)-poly(diene) poly styrene block copolymer, or mixtures thereof, or poly(chloroprene) or mixtures of poly(styrene)-poly(diene) block copolymers and poly(chloroprene) and said n-pentane soluble polymers is a compatible saturated polymer or SBR synthetic rubber, or natural rubber or synthetic trans-poly(isoprene) or synthetic cis-poly (isoprene) or mixtures of said n-pentane soluble polymers.
Claim 14
Dependent Claim
18 words
The process of claim 10 in which the poly(styrene) ended poly styrene-poly(diene)-poly(styrene) block copolymer is poly(isoprene)-poly(butadiene)-poly(styrene) block copolymer.
Claim 15
Independent Claim
129 words
THE METHOD OF TREATING AN ASPHALTIC SURFACE WHICH COMPRISES APPLYING TO SAID SURFACE OF AN OIL IN WATER EMULSION COMPRISING AN OIL PHASE CONSISTING ESSENTIALLY OF AN OIL HAVING AN INTIAL BOILING POINT WHICH IS NOT SUBSTANTIALLY BELOW 300*C. AT 760 MM. HG AND IS SUBSTANTIALLY FREE OF ASPHALTENES AND IS SUBSTANTIALLY SOLUBLE IN NORMAL PENTANE AND HAVING SOLVENT PROPERTIES FOR ASPHALT, A MIXTURE OF COMPATIBLE POLYMERS DISSOLVED IN SAID OIL PHASE, SAID POLYMERS BEING IN CONCENTRATION OF ABOUT 2 TO ABOUT 25% BY WEIGH ON SAID OIL PHASE AND A CATIONIC EMULSIFIER, SAID POLYMERS INCLUDING A MIXTURE OF A POLYMER WHICH IS SUBSTANTIALLY INSOLUBLE IN N-PENTANE AND A POLYMER WHICH IS SUBSTANTIALLY SOLUBLE IN N-PENTANE IN WEIGHT RATIO TO EACH OTHER IN THE RANGE OF 9:1 TO 1:9.
Claim 16
Independent Claim
129 words
THE METHOD OF TREATING AN ASPHALTIC SURFACE WHICH COMPRISES APPLYING TO SAID SURFACE OF AN OIL IN WATER EMULSION COMPRISING AN OIL PHASE CONSISTING ESSENTIALLY OF AN OIL HAVING AN INTIAL BOILING POINT WHICH IS NOT SUBSTANTIALLY BELOW 300*C. AT 760 MM. HG AND IS SUBSTANTIALLY FREE OF ASPHALTENES AND IS SUBSTANTIALLY SOLUBLE IN NORMAL PENTANE AND HAVING SOLVENT PROPERTIES FOR ASPHALT, A MIXTURE OF COMPATIBLE POLYMERS DISSOLVED IN SAID OIL PHASE, SAID POLYMERS BEING IN CONCENTRATION OF ABOUT 2 TO ABOUT 25% BY WEIGH ON SAID OIL PHASE AND A CATIONIC EMULSIFIER, SAID POLYMERS INCLUDING A MIXTURE OF A POLYMER WHICH IS SUBSTANTIALLY INSOLUBLE IN N-PENTANE AND A POLYMER WHICH IS SUBSTANTIALLY SOLUBLE IN N-PENTANE IN WEIGHT RATIO TO EACH OTHER IN THE RANGE OF 9:1 TO 1:9.
Claim 17
Dependent Claim
37 words
The process of claim 12 in which the said n-pentane substantially insoluble polymer is a poly(styrene)-ended poly(styrene)-poly(diene)-poly(Styrene) block copolymer, or mixtures of said copolymers or poly(chloroprene) or mixtures of poly(chloroprene) and said block copolymer or block copolymers.
Claim 18
Dependent Claim
40 words
The process of claim 13 in which the polymer which is substantially insoluble in n-pentane is poly(styrene)-ended poly(styrene)-poly(butadiene) block copolymer or mixtures of said block copolymers, or a poly(chloroprene) or mixtures of poly(chloroprene) and said block copolymer or block copolymers.
Claim 19
Dependent Claim
46 words
The process of claim 12 in which the polymer, which is substantially soluble in n-pentane, is a compatible saturated polymer or poly(butadiene) or SBR synthetic rubber, or natural rubber or synthetic trans-poly (isoprene) or synthetic cis-poly (isoprene) or mixtures of two or more of the foregoing.
Claim 20
Dependent Claim
41 words
The process of claim 15 in which the polymer which is substantially insoluble in n-pentane is poly(styrene)-ended poly(styrene) poly(butadiene) block copolymer, or mixtures of said block copolymers, or a poly(chloroprene) or mixtures of poly(chloroprene) and said block copolymer or block copolymers.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |