US3853799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bituminous compositions prepared by blowing blends of bitumen, aromatic extract and ept rubber
Assignee: BP PLC
•
Filing: 1970-09-10
•
Granted: 1974-12-10
•
Expires: 1990-09-10
Abstract
Abstract The penetration/temperature properties of a bitumen are improved by adding a solvent such as an aromatic extract and a rubber formed from ethylene, propylene and third ethylenic compound (e.g., cyclopentadiene dimer). Sulphur and/or polyolefine (polyethylene) may also be added.
Inventors
- 👤 R Behling
- 👤 M Oelsner
- 👤 G Zenke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:31
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/26; C; C08; C08L; C08L95/00; H01B3/20; H01B3/22
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
127 words
A METHOD OF PREPARING AN ASPHALTIC COMPOSITION SUITABLE FOR USE AS A ROOF SURFACING MATERIAL, WHICH COMPRISES 1 FORMING A MIXTURE OF: 23-85% WT. BASED ON THE TOTAL MIXTURE, OF AN ASPHALT WHICH IS A DISTILLATION RESIDUE DERIVED FROM CRUDE PETROLEUM, 2-25% WT, BASED ON THE TOTAL MIXTURE, OF A RUBBER WHICH IS A COPOLYMER OF (A) MONOLEFINES AND (B) CYCLIC HYDROCARBONS WITH AN ENDOCYCLIC BRIDGE AND AT LEAST TWO OLEFINIC DOUBLE BONDS 10-75% WT, BASED ON THE TOTAL MIXTURE, OF A FLUX OIL WHICH IS AN AROMATIC EXTRACT FOR EXTENDING THE RUBBER, 0-4 PARTS BY WEIGHT SULPHUR PER 100 PARTS BY WEIGHT OF THE RUBBER, AND 0-3% WT, BASED ON THE TOTAL MIXTURE, OF A POLYOLEFINE SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE AND POLYPROPYLENE, AND
Claim 2
Independent Claim
127 words
A METHOD OF PREPARING AN ASPHALTIC COMPOSITION SUITABLE FOR USE AS A ROOF SURFACING MATERIAL, WHICH COMPRISES 1 FORMING A MIXTURE OF: 23-85% WT. BASED ON THE TOTAL MIXTURE, OF AN ASPHALT WHICH IS A DISTILLATION RESIDUE DERIVED FROM CRUDE PETROLEUM, 2-25% WT, BASED ON THE TOTAL MIXTURE, OF A RUBBER WHICH IS A COPOLYMER OF (A) MONOLEFINES AND (B) CYCLIC HYDROCARBONS WITH AN ENDOCYCLIC BRIDGE AND AT LEAST TWO OLEFINIC DOUBLE BONDS 10-75% WT, BASED ON THE TOTAL MIXTURE, OF A FLUX OIL WHICH IS AN AROMATIC EXTRACT FOR EXTENDING THE RUBBER, 0-4 PARTS BY WEIGHT SULPHUR PER 100 PARTS BY WEIGHT OF THE RUBBER, AND 0-3% WT, BASED ON THE TOTAL MIXTURE, OF A POLYOLEFINE SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE AND POLYPROPYLENE, AND
Claim 3
Dependent Claim
19 words
A method according to claim 1, in which the rubber is a copolymer of (a) mono-olefines and (b) dicyclopentadiene.
Claim 4
Dependent Claim
17 words
blowing the mixture with a gas which contains elemental exygen, at a temperature of 150* - 300*C.
Claim 5
Dependent Claim
17 words
blowing the mixture with a gas which contains elemental exygen, at a temperature of 150* - 300*C.
Claim 6
Dependent Claim
17 words
BLOWING THE MIXTURE WITH A GAS WHICH CONTAINS ELEMENTAL OXYGEN, AT A TEMPERATURE OF 150* - 300*C.
Claim 7
Dependent Claim
17 words
BLOWING THE MIXTURE WITH A GAS WHICH CONTAINS ELEMENTAL OXYGEN, AT A TEMPERATURE OF 150* - 300*C.
Claim 8
Dependent Claim
11 words
blowing the mixture with air at a temperature of 220* -230*C.
Claim 9
Dependent Claim
11 words
blowing the mixture with air at a temperature of 220* -230*C.
Claim 10
Dependent Claim
11 words
blowing the mixture with air at a temperature of 150* -300*C.
Claim 11
Dependent Claim
11 words
blowing the mixture with air at a temperature of 150* -300*C.
Claim 12
Dependent Claim
18 words
A method according to claim 2, in which the rubber is a copolymer of ethylene, propylene and dicyclopentadiene.
Claim 13
Dependent Claim
30 words
A method according to claim 1, in which the blowing is carried out in two stages, the first stage being carried out at 220*- 230*C and the second at 250*C.
Claim 14
Dependent Claim
13 words
A method according to claim 1, in which the blowing gas is air.
Claim 15
Independent Claim
17 words
A method of preparing an asphaltic composition, suitable for use as a roof surfacing material, which comprises
Claim 16
Independent Claim
17 words
A method of preparing an asphaltic composition, suitable for use as a roof surfacing material, which comprises
Claim 17
Dependent Claim
31 words
A methoD according to claim 6, in which the blowing is carried out in two stages, the first stage being carried out at 220 - 230*C and the second at 250*C.
Claim 18
Independent Claim
98 words
A method of preparing an asphaltic composition, suitable for use as a roof surfacing material, which comprises (1) forming a mixture of: 85-10% wt., based on the total mixture, of an asphalt which is a distillation residue derived from crude petroleum, 5-15% wt., based on the total mixture, of a rubber which is a copolymer of ethylene, propylene and dicyclopentadiene, 10-75% wt., based on the total mixture, of an aromatic extract, and 1-4 parts by weight sulphur per 100 parts by weight of the rubber, and (2) blowing the mixture with air at a temperature of 150* -300*C.
Claim 19
Independent Claim
98 words
A method of preparing an asphaltic composition, suitable for use as a roof surfacing material, which comprises (1) forming a mixture of: 85-10% wt., based on the total mixture, of an asphalt which is a distillation residue derived from crude petroleum, 5-15% wt., based on the total mixture, of a rubber which is a copolymer of ethylene, propylene and dicyclopentadiene, 10-75% wt., based on the total mixture, of an aromatic extract, and 1-4 parts by weight sulphur per 100 parts by weight of the rubber, and (2) blowing the mixture with air at a temperature of 150* -300*C.
Claim 20
Dependent Claim
31 words
A method according to claim 8, in which the blowing is carried out in two stages, the first stage being carried out at 220* - 230*C and the second at 250*C.
Claim 21
Independent Claim
17 words
A method of preparing an asphaltic composition, suitable for use as a roof surfacing material, which comprises
Claim 22
Independent Claim
17 words
A method of preparing an asphaltic composition, suitable for use as a roof surfacing material, which comprises
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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) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |