US4011159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removal of petroleum products from solid or liquid surfaces
Assignee: Orkem SA
•
Filing: 1975-10-24
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Granted: 1977-03-08
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Expires: 1995-10-24
Abstract
Abstract A method of removal of petroleum products from solid or liquid surfaces, in which the petroleum product is covered with a finely-divided solid polymer, said polymer being selected from the group consisting of poly(bicyclo [2.2.1]heptene-2 and poly(methyl-5 bicyclo [2.2.1] heptene-2) mainly obtained by opening the cycle of bicyclo [2.2.1]heptene-2 and its methyl derivative. After the finely-divided polymer is applied to the petroleum, there is obtained a strong solid rubbery film, the film being removable by mechanical means.
Inventors
- 👤 Claude Stein
- 👤 Andre Marbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:39
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/681
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
76 words
A method of removal of petroleum products from solid and from liquid surfaces, comprising forming a strong, solid, rubbery, self-supporting film of polymer and said petroleum product by covering said petroleum product with a finely-divided solid polymer selected from the group consisting of poly(bicyclo [2.2.1]heptene-2) and poly(methyl-5 bicyclo [2.2.1]heptene-2) mainly obtained by opening the cycle of bicyclo [2.2.1]heptene-2 and its methyl derivative; and removing said strong, solid, rubbery self-supporting film from the solid or liquid surface.
Claim 2
Independent Claim
76 words
A method of removal of petroleum products from solid and from liquid surfaces, comprising forming a strong, solid, rubbery, self-supporting film of polymer and said petroleum product by covering said petroleum product with a finely-divided solid polymer selected from the group consisting of poly(bicyclo [2.2.1]heptene-2) and poly(methyl-5 bicyclo [2.2.1]heptene-2) mainly obtained by opening the cycle of bicyclo [2.2.1]heptene-2 and its methyl derivative; and removing said strong, solid, rubbery self-supporting film from the solid or liquid surface.
Claim 3
Dependent Claim
29 words
A method as claimed in claim 1, in which there is utilized at least 10% by weight of the polymer with respect to the petroleum product to be removed.
Claim 4
Dependent Claim
20 words
A method as claimed in claim 1, in which the said polymer has an apparent density of 0.20 to 0.35.
Claim 5
Dependent Claim
21 words
A method as claimed in claim 1, in which the said polymer has a particle size of 0.01 to 2 mm.
Claim 6
Dependent Claim
21 words
A method in accordance with claim 1, wherein said film is removed by mechanical means comprising a hauled mobile filter barrier.
Claim 7
Dependent Claim
24 words
A method in accordance with claim 1, wherein said film is removed by mechanical means comprising a system of rollers provided with winding means.
Claim 8
Dependent Claim
16 words
A method as set forth in claim 1 wherein said film is removed by a net.
References Cited (Backward Citations)
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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) | 1980-03-07 | 1980-09-06 | 1981-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-07 | 1984-09-06 | 1985-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-07 | 1988-09-06 | 1989-03-08 | $7700.00 | Window Closed / Lapsed |