US4064082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphaltic composition and its manufacture
Assignee: Mobil Oil AS
•
Filing: 1976-04-02
•
Granted: 1977-12-20
•
Expires: 1996-04-02
Abstract
Abstract Asphaltic compositions are provided comprising a major proportion of road asphalt, and minor proportions of thermal asphalt, ethylene-vinyl acetate copolymer and terpenic resin. A method for manufacturing such compositions is described involving dissolution of ethylene-vinyl acetate copolymer and terpenic resin in thermal asphalt and addition of the resulting solution to road asphalt.
Inventors
- 👤 Leonard Henschel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:57
CPC Classifications
C; C08; C08L; C08L95/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
35 words
An asphaltic composition comprising a major proportion of road asphalt, a minor proportion of thermal asphalt, a minor proportion of a copolymer of ethylene and vinyl acetate and a minor proportion of a terpenic resin.
Claim 2
Dependent Claim
35 words
An asphaltic composition comprising a major proportion of road asphalt, a minor proportion of thermal asphalt, a minor proportion of a copolymer of ethylene and vinyl acetate and a minor proportion of a terpenic resin.
Claim 3
Dependent Claim
43 words
The composition of claim 1 wherein the components are combined in the following approximately proportions by weight: ______________________________________
Road Asphalt 50 to 90
Thermal Asphalt 4 to 20
Copolymer of Ethylene
0.5 to 40
and Vinyl Acetate
Terpenic Resin 0.2 to 30
______________________________________
Claim 4
Dependent Claim
52 words
The composition of claim 1 wherein said thermal asphalt is characterized by a softening point (Ring and Ball) from about 40° to about 80° C., an ASTM softening point-penetration index at 25° C. from about 0 to about 40 and a viscosity between about 50 and about 500 centistokes at 275° F.
Claim 5
Dependent Claim
52 words
The composition of claim 1 wherein said road asphalt is characterized by a softening point (Ring and Ball) from about 40° to about 60° C., an ASTM softening point-penetration index at 25° C. from about 40 to about 70 and a viscosity between about 200 and about 1000 centistokes at 275° F.
Claim 6
Dependent Claim
24 words
The composition of claim 1 wherein said terpenic resin has a softening point (Ring and Ball) from about 50° C. to about 200° C.
Claim 7
Dependent Claim
31 words
The composition of claim 1 wherein the copolymer of ethylene and vinyl acetate comprises from about 10 to about 50 percent, by weight, of units derived from the copolymerized vinyl acetate.
Claim 8
Dependent Claim
23 words
The composition of claim 1 wherein said copolymer of ethylene and vinyl acetate has a melt index from about 20 to about 50.
Claim 9
Independent Claim
29 words
A method for manufacturing an asphaltic composition comprising the steps of dissolving ethylene-vinyl acetate copolymer and terpenic resin in thermal asphalt and adding the resulting solution to road asphalt.
Claim 10
Independent Claim
29 words
A method for manufacturing an asphaltic composition comprising the steps of dissolving ethylene-vinyl acetate copolymer and terpenic resin in thermal asphalt and adding the resulting solution to road asphalt.
Claim 11
Dependent Claim
51 words
The method of claim 8 wherein the combining proportions of the components are such as to produce a product having the following weight percentage composition: ______________________________________
Road Asphalt 50 to 90
Thermal Asphalt 4 to 20
Copolymer of Ethylene
0.5 to 40
and Vinyl Acetate
Terpenic Resin 0.2 to 30
______________________________________
References Cited (Backward Citations)
US3442841A
Cited
US3821144A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-19 | 1981-06-20 | 1981-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-19 | 1985-06-20 | 1985-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-19 | 1989-06-20 | 1989-12-20 | $7700.00 | Window Closed / Lapsed |