US4185988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anticaking compositions
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1978-07-28
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Granted: 1980-01-29
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Expires: 1998-07-28
Abstract
Abstract An anticaking composition suitable for fertilizers comprising a hydrophobic liquid having dissolved therein from 0.01 to 20% by weight of an alkylaryl sulphonate derived from an alkylaryl sulphonic acid of molecular weight greater than 400. Also covered are fertilizer granules, e.g. NPK fertilizers coated with this anticaking composition.
Inventors
- 👤 Jean P. Kistler
- 👤 Michel Guinot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:03
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/30; C; C05; C05G; C05G3/00; C05G3/30; C05G5/00; C05G5/30; C10; C10M; C10M2201/00; C10M2201/06; C10M2201/062; C10M2201/10; C10M2201/105; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; C10M2219/00; C10M2219/04; C10M2219/044; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
62 words
Fertilizer granules coated with a hydrophobic layer in an amount ranging from 0.005 to 0.4% by weight based on the weight of said fertilizer, said hydrophobic layer comprising mineral oil having dissolved therein from 0.01 to 20% by weight of an alkylaryl sulfonate of a nitrogen-containing compound, said sulfonate derived from a synthetic alkylaryl sulfonic acid of molecular weight greater than 400.
Claim 2
Dependent Claim
62 words
Fertilizer granules coated with a hydrophobic layer in an amount ranging from 0.005 to 0.4% by weight based on the weight of said fertilizer, said hydrophobic layer comprising mineral oil having dissolved therein from 0.01 to 20% by weight of an alkylaryl sulfonate of a nitrogen-containing compound, said sulfonate derived from a synthetic alkylaryl sulfonic acid of molecular weight greater than 400.
Claim 3
Dependent Claim
33 words
The fertilizer granules according to claim 1 wherein said nitrogen-containing compound is selected from ammonia, ethanolamine, ethoxy amines and fatty acid amines and said hydrophobic layer ranges from 0.2 to 0.4% by weight.
Claim 4
Dependent Claim
22 words
The fertilizer granules according to claim 2 wherein said sulfonic acid has a molecular weight in the range of 480 to 530.
Claim 5
Dependent Claim
24 words
The fertilizer granules according to claim 2 wherein said alkylaryl sulfonate is the diethanolamine salt of a synthetic sulfonic acid of molecular weight 520.
Claim 6
Dependent Claim
99 words
In a method for reducing the tendency of fertilizers to cake wherein fertilizer granules are coated with an anticaking composition to provide a hydrophobic layer thereby curtailing absorption of water by the granule, the improvement of providing said hydrophobic layer in an amount ranging from 0.005-0.4% by weight based on the weight of the fertilizer by coating said fertilizer granules with an anticaking composition comprising mineral oil having dissolved therein from 0.01 to 20% by weight of an alkylaryl sulfonate of a nitrogen-containing compound, said sulfonate derived from a synthetic alkylaryl sulfonic acid of molecular weight greater than 400.
Claim 7
Dependent Claim
99 words
In a method for reducing the tendency of fertilizers to cake wherein fertilizer granules are coated with an anticaking composition to provide a hydrophobic layer thereby curtailing absorption of water by the granule, the improvement of providing said hydrophobic layer in an amount ranging from 0.005-0.4% by weight based on the weight of the fertilizer by coating said fertilizer granules with an anticaking composition comprising mineral oil having dissolved therein from 0.01 to 20% by weight of an alkylaryl sulfonate of a nitrogen-containing compound, said sulfonate derived from a synthetic alkylaryl sulfonic acid of molecular weight greater than 400.
Claim 8
Dependent Claim
33 words
In the method according to claim 5 wherein said nitrogen-containing compound is selected from ammonia, ethanolamine, ethoxy amines and fatty acid amines and said hydrophobic layer ranges from 0.2 to 0.4% by weight.
Claim 9
Dependent Claim
22 words
In a method according to claim 6 wherein said sulfonic acid has a molecular weight in the range of 480 to 530.
Claim 10
Dependent Claim
19 words
In a method according to claim 6 wherein said alkylaryl sulfonate is the diethanolamine salt of said sulfonic acid.
Claim 11
Dependent Claim
78 words
Fertilizer granules coated with a hydrophobic layer in an amount ranging from 0.005-0.4% by weight based on the weight of said fertilizer, said hydrophobic layer consisting essentially of paraffinic mineral oil having dissolved therein the combination from about 0.01-20% by weight of an alkylaryl sulfonate derived from a synthetic alkylaryl sulfonic acid of molecular weight ranging from 480-530 and from 0.1-10% by weight of a fatty amine whereby the absorption of water by said fertilizer granules is curtailed.
Claim 12
Dependent Claim
78 words
Fertilizer granules coated with a hydrophobic layer in an amount ranging from 0.005-0.4% by weight based on the weight of said fertilizer, said hydrophobic layer consisting essentially of paraffinic mineral oil having dissolved therein the combination from about 0.01-20% by weight of an alkylaryl sulfonate derived from a synthetic alkylaryl sulfonic acid of molecular weight ranging from 480-530 and from 0.1-10% by weight of a fatty amine whereby the absorption of water by said fertilizer granules is curtailed.
Claim 13
Dependent Claim
17 words
The fertilizer granules of claim 9 wherein said sulfonate is an alkali or alkaline earth metal sulfonate.
Claim 14
Dependent Claim
26 words
The fertilizer granules of claim 9 wherein said sulfonate is the sulfonate of a nitrogen-containing compound selected from ammonia, ethanolamine, ethoxy amines and fatty acid amines.
Claim 15
Dependent Claim
13 words
The fertilizer granules of claim 9 wherein said fertilizer is calcium ammonium nitrate.
Claim 16
Dependent Claim
105 words
In a method for reducing the tendency of fertilizers to cake wherein fertilizer granules are coated with an anticaking composition to provide a hydrophobic layer thereby curtailing absorption of water by the granule, the improvement of providing said hydrophobic layer in an amount ranging from 0.005-0.4% by weight based on the weight of the fertilizer by coating said fertilizer granules with an anticaking composition consisting essentially of paraffinic mineral oil having dissolved therein the combination from about 0.01-20% by weight of an alkylaryl sulfonate derived from an alkylaryl sulfonic acid of molecular weight ranging from 480-530 and from 0.1-10% by weight of a fatty amine.
Claim 17
Dependent Claim
105 words
In a method for reducing the tendency of fertilizers to cake wherein fertilizer granules are coated with an anticaking composition to provide a hydrophobic layer thereby curtailing absorption of water by the granule, the improvement of providing said hydrophobic layer in an amount ranging from 0.005-0.4% by weight based on the weight of the fertilizer by coating said fertilizer granules with an anticaking composition consisting essentially of paraffinic mineral oil having dissolved therein the combination from about 0.01-20% by weight of an alkylaryl sulfonate derived from an alkylaryl sulfonic acid of molecular weight ranging from 480-530 and from 0.1-10% by weight of a fatty amine.
Claim 18
Dependent Claim
18 words
In a method according to claim 13 wherein said sulfonate is an alkali or alkaline earth metal sulfonate.
Claim 19
Dependent Claim
27 words
In a method according to claim 13 wherein said sulfonate is the sulfonate of a nitrogen-containing compound selected from ammonia, ethanolamine, ethoxy amines and fatty acid amines.
Claim 20
Dependent Claim
21 words
In a method according to claim 13 wherein said fatty amine is predominantly of amines containing 16 and 18 carbon atoms.
References Cited (Backward Citations)
US3234003A
Cited
US3690391A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-01-28 | 1983-07-30 | 1984-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-28 | 1987-07-30 | 1988-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-28 | 1991-07-30 | 1992-01-29 | $7700.00 | Window Closed / Lapsed |