US4401571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for removing liquids floating on water
Assignee: Individual
•
Filing: 1981-06-16
•
Granted: 1983-08-30
•
Expires: 2001-06-16
Abstract
Abstract Method for removing a liquid floating on water, for example oil, particularly crude oil on sea water, with a water-resistant synthetic resin foam formed in situ in the region of the water surface to be cleaned, a mixture containing a solvent-free liquid epoxy resin, 5-15%, by weight, based on the epoxy resin, of a resin hardening agent on the basis of an alkylphenol and a biphenol as well as a methylalkyl ketone and 20-30%, by weight, of an accelerator being cured with a di- or polyamine around the liquid to be removed and, optionally, also around the center thereof.
Inventors
- 👤 Karl F. Ney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:53
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/681; Y; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S210/922; Y10S210/924
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
118 words
A method for removing a liquid floating on a water surface by in-situ formation of a water-resistant synthetic resin foam on the water surface, comprising the step of forming the foam around the liquid to be removed by curing, with a curing agent selected from the group consisting of di- and polyamines, a mixture containing a solvent-free liquid epoxy resin, 20-30%, by weight, based on the curing agent, of a silicon polymer with Si-H-groups as a foaming agent, 5-15%, by weight, based on the epoxy resin, of a resin improving agent selected from the group consisting of an alkyl phenol, a biphenol and a methylalkyl ketone, and 20-30%, by weight, based on the curing agent, of an accelerator.
Claim 2
Independent Claim
118 words
A method for removing a liquid floating on a water surface by in-situ formation of a water-resistant synthetic resin foam on the water surface, comprising the step of forming the foam around the liquid to be removed by curing, with a curing agent selected from the group consisting of di- and polyamines, a mixture containing a solvent-free liquid epoxy resin, 20-30%, by weight, based on the curing agent, of a silicon polymer with Si-H-groups as a foaming agent, 5-15%, by weight, based on the epoxy resin, of a resin improving agent selected from the group consisting of an alkyl phenol, a biphenol and a methylalkyl ketone, and 20-30%, by weight, based on the curing agent, of an accelerator.
Claim 3
Dependent Claim
10 words
The method of claim 1, wherein the liquid is oil.
Claim 4
Dependent Claim
17 words
The method of claim 2, wherein the liquid is crude oil and the water is sea water.
Claim 5
Dependent Claim
18 words
The method of claim 1, wherein the foam is also formed substantially in the center of the liquid.
Claim 6
Dependent Claim
15 words
The method of claim 1, wherein the mixture contains 7% of the resin improving agent.
Claim 7
Dependent Claim
13 words
The method of claim 1, wherein the mixture contains 25% of the accelerator.
Claim 8
Dependent Claim
19 words
The method of claim 1, wherein the accelerator is selected from the group consisting of salicylic and phosphoric acid.
Claim 9
Dependent Claim
21 words
The method of claim 1, wherein the mixture additionally contains 10-100%, by weight, based on the epoxy resin, of an additive.
Claim 10
Dependent Claim
19 words
The method of claim 8, wherein the additive does not exceed 20%, by weight, based on the epoxy resin.
Claim 11
Dependent Claim
18 words
The method of claim 8, wherein the additive is asbestos dust, short asbestos fibers, wood flour or vermiculite.
Claim 12
Dependent Claim
25 words
The method of claim 1, wherein the curing agent is selected from the group consisting of ethylene diamine, diethylene triamine, dipropylene triamine and triethylene triamine.
Claim 13
Dependent Claim
28 words
The method of claim 1, wherein the mixture is cured in the presence of a stoichiometric amount of polybutadiene and/or a mixed polymer based on butadiene and styrene.
References Cited (Backward Citations)
DE1944679U
Cited
FR1523828A
Cited
GB1170959A
Cited
US3676357A
Cited
FR2103217A5
Cited
US3819514A
Cited
US3816359A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-29 | 1987-02-28 | 1987-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-29 | 1991-02-28 | 1991-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-29 | 1995-02-28 | 1995-08-30 | $7700.00 | Window Closed / Lapsed |