Patent US4382873A successfully refreshed from Google Patents.
US4382873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispersant and biodegradant formulations for treating hydrocarbon-polluted waters
Assignee: IFP Energies nouvelles
•
Filing: 1980-12-19
•
Granted: 1983-05-10
•
Expires: 2000-12-19
Abstract
Abstract Dispersant and biodegradant formulations are manufactured by admixing at least one melamine derivative with at least one compound having a hydroxy function, at least one phosphorus compound and at least one surfactive agent. Aqueous emulsions obtained from these formulations are also provided.
Inventors
- 👤 Claude Gatellier
- 👤 Andree Plessis
- 👤 Patrick Gateau
- 👤 Jean-Pierre Durand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:57
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/682; C02F3/00; C02F3/34; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/06; Y10S516/905; Y10S516/914; Y10S516/915; Y10S516/917; Y10S516/918; Y10S516/92
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
79 words
A biodegradable composition which is both an oil dispersant and a nutrient for microorganisms, and which is useful for accelerating the microbiological degradation of petroleum materials in water, said composition comprising: (a) at least one assimilable nitrogen compound, said compound being a condensation product of melamine and formaldehyde or a condensation product of melamine with urea and formaldehyde; (b) at least one organic hydroxy compound; (c) at least one assimilable phosphorus compound; and (d) at least one surface-active agent.
Claim 2
Dependent Claim
79 words
A biodegradable composition which is both an oil dispersant and a nutrient for microorganisms, and which is useful for accelerating the microbiological degradation of petroleum materials in water, said composition comprising: (a) at least one assimilable nitrogen compound, said compound being a condensation product of melamine and formaldehyde or a condensation product of melamine with urea and formaldehyde; (b) at least one organic hydroxy compound; (c) at least one assimilable phosphorus compound; and (d) at least one surface-active agent.
Claim 3
Dependent Claim
20 words
A composition according to claim 1, wherein said hydroxy compound (b) is a C 1-6 mono-alchol or ethyleneglycol monoalkyl derivative.
Claim 4
Dependent Claim
20 words
A composition according to claim 1, wherein said hydroxy compound (b) is ethylene glycol mono-ethyl ether or ethyleneglycol mono-butyl ether.
Claim 5
Dependent Claim
24 words
A composition according to claim 1, wherein said hydroxy compound (b) is added to freshly prepared melamine condensation product (a) in formulating the composition.
Claim 6
Dependent Claim
23 words
A composition according to claim 1, wherein said melamine condensation product (a) is etherified with a C 1-6 alcohol or ethyleneglycol monoalkyl derivative.
Claim 7
Dependent Claim
28 words
A composition according to claim 1, wherein said phosphorus compound (c) is a potassium salt of an oxyethylenated fatty alcohol phosphoric ester or a neutralized phosphated oxyethylenated alkylphenol.
Claim 8
Dependent Claim
19 words
A composition according to claim 1, wherein said surface-active agent (d) has a hydrophilic-lipophilic balance of 1 to 13.
Claim 9
Dependent Claim
19 words
A composition according to claim 7, wherein said surface-active agent (d) has a hydrophilic-lipophilic balance of 4 to 9.
Claim 10
Dependent Claim
23 words
A composition according to claim 1, which comprises at least two surface-active agents (d) having a combined hydrophilic-lipophilic balance of 1 to 13.
Claim 11
Dependent Claim
16 words
A composition according to claim 1, whose nitrogen content is from 4 to 8% by weight.
Claim 12
Dependent Claim
16 words
A composition according to claim 1, whose phosphorus content is from 0.1 to 0.4% by weight.
Claim 13
Dependent Claim
22 words
A composition according to claim 11, whose mono-alcohol content or ethylene glycol mono-alkyl derivative content is from 7 to 30% by weight.
Claim 14
Dependent Claim
24 words
An aqueous emulsion which comprises from 5 to 20% by weight of a composition according to claim 12 in fresh water or sea water.
Claim 15
Dependent Claim
20 words
A composition according to claim 1, wherein said hydroxy compound (b) is a mono-alcohol or an ethylene glycol mono-alkyl derivative.
Claim 16
Dependent Claim
18 words
A composition according to claim 14, wherein said ethylene glycol mono-alkyl derivative is an ethylene glycol mono-alkyl ether.
Claim 17
Dependent Claim
55 words
A composition according to claim 1, wherein said hydroxy compound (b) is a C 1-6 mono-alcohol or ethylene glycol mono-alkyl ether; said phosphorus compound (c) is a potassium salt of an oxyethylenated fatty alcohol phosphoric ester or a neutralized phosphated oxyethylenated alkylphenol; and said surface-active agent (d) has a hydrophilic-lipophilic balance of 1 to 13.
Claim 18
Dependent Claim
20 words
A composition according to claim 1, wherein said assimilable nitrogen compound (a) is a condensation product of melamine with formaldehyde.
Claim 19
Dependent Claim
41 words
A composition according to claim 17, wherein said melamine condensation product with formaldehyde is prepared by reacting an aqueous formaldehyde solution whose pH has been adjusted to 8-9, with melamine, the ratio of NH 2 groups to CHO groups being 0.5-3.
Claim 20
Dependent Claim
22 words
A composition according to claim 1, wherein said assimilable nitrogen compound (a) is a condensation product of melamine with urea and formaldehyde.
Claim 21
Dependent Claim
45 words
A composition according to claim 19, wherein said melamine condensation product with formaldehyde and urea is prepared by reacting an aqueous formaldehyde solution whose pH has been adjusted to 8-9, with melamine and urea, the ratio of NH 2 groups to CHO groups being 0.5-3.
Claim 22
Dependent Claim
18 words
A composition according to claim 20, wherein the molar ratio of melamine to urea is at least 1:3.
Claim 23
Dependent Claim
45 words
A composition according to claim 1, wherein said surface-active agent (d) is at least one of sorbitan monolaurate, ethylene glycol monostearate, sorbitan trioleate, glycerol monolaurate, sorbitan monooleate, anhydrosorbitol monooleate, ethoxylated C 12 -C 13 primary alcohols, polyethyleneglycol 400 dioleate, polyethyleneglycol 300 monooleate, polyethyleneglycol 400 monooleate.
Claim 24
Dependent Claim
34 words
A composition according to one of claims 2-9, or 1-25 having a nitrogen content of 4-8% by weight, a phosphorus content of 0.1-0.4% by weight; and a hydroxy compound content of 7-30% by weight.
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) | 1986-05-09 | 1986-11-08 | 1987-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-09 | 1990-11-08 | 1991-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-09 | 1994-11-08 | 1995-05-10 | $7700.00 | Window Closed / Lapsed |