US3873483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphaltic composition containing elastic copolymers
Assignee: BP PLC
•
Filing: 1973-08-08
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Granted: 1975-03-25
•
Expires: 1993-08-08
Abstract
Abstract Bituminous composition is prepared by blowing a mixture of 6595% by weight of a high boiling hydrocarbon oil and 35-5% of an elastomeric copolymer, preferably an ethylene-propylenedicyclopentadiene copolymer. The blown mixture is then blended with unblown bitumen and the resulting mixture can be further blown if desired. The products have good hot storage properties.
Inventors
- 👤 Manfred Wolfgang Oelsner
- 👤 Erich Gunther Zenke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:30
CPC Classifications
E; E01; E01C; E01C7/00; E01C7/08; E01C7/18; E01C7/26; E01C7/265; C; C08; C08L; C08L95/00
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
11 words
A PROCESS FOR THE PRODUCTION OF AN ASPHALTIC COMPOSITION, WHICH COMPRISES
Claim 2
Dependent Claim
11 words
A PROCESS FOR THE PRODUCTION OF AN ASPHALTIC COMPOSITION, WHICH COMPRISES
Claim 3
Dependent Claim
64 words
FORMING A MIXTURE OF: 5-35% BY WEIGHT, BASED ON THE TOTAL MIXTURE OF AN ELASTOMERIC COPOLYMER OF ETHYLENE, PROPYLENE AND AN CYCLIC OLEFIN HAVING MORE THAN ONE OLEFINIC DOUBLE BOND AND AN ENDOCYCLIC BRIDGE COMPRISING ONE OR MORE METHYLENE GROUPS, 65-95% BY WEIGHT, OF A HIGH BOILING HYDROCARBON OIL WICH IS AN AROMATIC EXTRACT FROM LUBRICATING OIL OR HIGH BOILING COAL TAR FRACTIONS, AND
Claim 4
Dependent Claim
64 words
FORMING A MIXTURE OF: 5-35% BY WEIGHT, BASED ON THE TOTAL MIXTURE OF AN ELASTOMERIC COPOLYMER OF ETHYLENE, PROPYLENE AND AN CYCLIC OLEFIN HAVING MORE THAN ONE OLEFINIC DOUBLE BOND AND AN ENDOCYCLIC BRIDGE COMPRISING ONE OR MORE METHYLENE GROUPS, 65-95% BY WEIGHT, OF A HIGH BOILING HYDROCARBON OIL WICH IS AN AROMATIC EXTRACT FROM LUBRICATING OIL OR HIGH BOILING COAL TAR FRACTIONS, AND
Claim 5
Dependent Claim
19 words
BLOWING THE MIXTURE AT 150* TO 260*C WITH A GAS WHICH CONTAINS ELEMENTAL OXYGEN TO FORM A CONCENTRATE, AND
Claim 6
Dependent Claim
19 words
BLOWING THE MIXTURE AT 150* TO 260*C WITH A GAS WHICH CONTAINS ELEMENTAL OXYGEN TO FORM A CONCENTRATE, AND
Claim 7
Dependent Claim
19 words
blowing the mixture at 150* to 260*C with a gas which contains elemental oxygen to form a concentrate, and
Claim 8
Dependent Claim
19 words
blowing the mixture at 150* to 260*C with a gas which contains elemental oxygen to form a concentrate, and
Claim 9
Dependent Claim
25 words
The process according to claim 1 wherein the concentration of the elastomeric copolymer in the concentrate is in the range 5 to 10% by weight.
Claim 10
Dependent Claim
22 words
The process according to claim 1 wherein up to 10 parts by weight sulphur per 100 parts of elastomeric copolymer are added.
Claim 11
Dependent Claim
15 words
dissolving said concentrate in unblown asphalt which is a distillation residue derived from crude oil.
Claim 12
Dependent Claim
15 words
dissolving said concentrate in unblown asphalt which is a distillation residue derived from crude oil.
Claim 13
Dependent Claim
15 words
DISSOLVING SAID CONCENTRATE IN UNBLOWN ASPHALT WHICH IS A DISTILLATION RESIDUE DERIVED FROM CRUDE OIL.
Claim 14
Dependent Claim
15 words
DISSOLVING SAID CONCENTRATE IN UNBLOWN ASPHALT WHICH IS A DISTILLATION RESIDUE DERIVED FROM CRUDE OIL.
Claim 15
Dependent Claim
22 words
The process according to claim 3 wherein 0.5 to 5 parts by weight of sulphur per 100 parts of copolymer are added.
Claim 16
Dependent Claim
24 words
The process according to claim 1 wherein the aromatic extract is derived by treating a vacuum distillate or a deasphalted vacuum residue with furfural.
Claim 17
Dependent Claim
17 words
The process according to claim 1 wherein the copolymer is a copolymer of ethylene, propylene and dicyclopentadiene.
Claim 18
Dependent Claim
29 words
The process according to claim 1 wherein the high boiling hydrocarbon oil is mixed with the copolymer by milling at a temperature in the range of 90* to 150*C.
Claim 19
Dependent Claim
22 words
The process according to claim 1 wherein 5-100 parts by weight of concentrate are mixed with 100 parts by weight of asphalt.
Claim 20
Dependent Claim
22 words
The process according to claim 8 wherein 50-100 parts by weight of concentrate are mixed with 100 parts by weight of asphalt.
Claim 21
Dependent Claim
23 words
The process according to claim 1 wherein the concentrate is mixed with the asphalt at a temperature in the range 150* to 260*C.
Claim 22
Dependent Claim
23 words
The process according to claim 10 wherein the concentrate is mixed with the asphalt at a temperature in the range 180* to 230*C.
Claim 23
Dependent Claim
20 words
The process according to claim 1 wherein the asphalt is a vacuum residue derived from a Middle East crude oil.
Claim 24
Dependent Claim
37 words
The process according to claim 1 wherein the blend obtained by dissolving the concentrate in the asphalt is further blown with air or another gas containing elemental oxygen at a temperature in the range 150* to 260*C.
Claim 25
Dependent Claim
23 words
The process according to claim 13 wherein the temperature at which the blend is further blown is in the range 180* to 230*C.
Claim 26
Dependent Claim
12 words
The process of claim 1 wherein the unsaturated hydrocarbon is ethylidene norbornene.
Claim 27
Dependent Claim
10 words
The product produced by the process defined in claim 1.
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) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |