Patent US3682249A successfully refreshed from Google Patents.
US3682249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for inhibiting the deposition of wax from wax-containing soluble oils and micellar dispersions and soluble oil and micellar compositions inhibited thereby
Assignee: LEROY W HOLM
•
Filing: 1971-01-08
•
Granted: 1972-08-08
•
Expires: 1991-01-08
Abstract
Abstract A method for inhibiting the deposition of wax from waxcontaining soluble oils and micellar dispersions in which a small amount of a was deposition inhibitor comprised of a copolymer of ethylene and a monoethylenically unsaturated ester is added to the soluble oil or micellar dispersion. Also disclosed are soluble oil and micellar compositions containing small amounts of the ethylene-ester copolymer.
Inventors
- 👤 Paul W Fischer
- 👤 Leroy W Holm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:05
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/52; C09K8/524; Y; Y10; Y10S; Y10S507/00; Y10S507/927; Y10S507/929; Y10S507/931
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
67 words
The method in accordance with claim 1 wherein said monoethylenically unsaturated ester is characterized by the formula: wherein (1) R is hydrogen or an alkyl group containing from about one to 25 carbon atoms and R1 is a vinyl or allyl group, or (2) R is an Alpha , Beta - unsaturated alkylene and R1 is an alkyl group containing from about one to 25 carbon atoms.
Claim 2
Dependent Claim
22 words
The method in accordance with claim 1 wherein said inhibitor is copolymer ethylene/vinyl acetate, copolymer ethylene/ethyl ethyl acrylate or copolymer ethylene/methyl methacrylate.
Claim 3
Dependent Claim
31 words
The method in accordance with claim 1 wherein said inhibitor is incorporated into said wax-containing soluble oil or micellar dispersion as a solution of the copolymer dissolved in an organic solvent.
Claim 4
Dependent Claim
57 words
The method defined in claim 1 wherein the inhibitor is incorporated into said wax-containing soluble oil or micellar dispersion at a temperature sufficiently high to maintain the wax dissolved in the soluble oil or micellar dispersion, and wherein said soluble oil or micellar dispersion is thereafter cooled to a temperature below the solidification temperature of the wax.
Claim 5
Dependent Claim
37 words
The method defined in claim 1 wherein said inhibitor is incorporated into said wax-containing soluble oil or micellar dispersion in an amount to provide therein an effective concentration of said inhibitor between about 5 and 10,000 ppm.
Claim 6
Independent Claim
94 words
A method for increasing the filtration rate of wax-containing soluble oils and mIcellar dispersions which comprises incorporating into said soluble oil or micellar dispersion a wax deposition inhibitor comprising a copolymer of (1) ethylene and (2) a lower vinyl ester or a lower alkyl acrylate or methacrylate, said inhibitor being added to said soluble oil or micellar dispersion in an amount to provide therein a concentration of said copolymer between about 5 and 10,000 ppm effective to increase the rate of flow of said soluble oil or micellar dispersion through a porous filter media.
Claim 7
Dependent Claim
29 words
The method defined in claim 7 wherein said inhibitor is added to said soluble oil or micellar dispersion as a solution of the copolymer dissolved in an organic solvent.
Claim 8
Dependent Claim
41 words
The method defined in claim 7 wherein said inhibitor is a copolymer of ethylene and vinyl acetate containing from about 10 to 70 weight percent vinyl acetate and exhibiting a melt index between about 1 and 600 grams per 10 minutes.
Claim 9
Dependent Claim
57 words
The method defined in claim 7 wherein the inhibitor is incorporated into said wax-containing soluble oil or micellar dispersion at a temperature sufficiently high to maintain the wax dissolved in the soluble oil or micellar dispersion, and wherein the soluble oil or micellar dispersion is thereafter cooled to a temperature below the solidification temperature of the wax.
Claim 10
Independent Claim
99 words
A method for increasing the rate of injection of wax-containing soluble oils and micellar dispersions into permeable earth formations which comprises incorporating into said soluble oil or micellar dispersion a wax deposition inhibitor comprising a copolymer of (1) ethylene and (2) a lower vinyl ester or a lower alkyl acrylate or methacrylate, said inhibitor being added to said soluble oil or micellar dispersion in an amount to provide therein a concentration of said copolymer between about 5 and 10,000 ppm effective to increase the rate of injection of said soluble oil or micellar dispersion into a porous earth strata.
Claim 11
Dependent Claim
29 words
The method defined in claim 11 wherein said inhibitor is added to said soluble oil or micellar dispersion as a solution of the copolymer dissolved in an organic solvent.
Claim 12
Dependent Claim
41 words
The method defined in claim 11 wherein said inhibitor is a copolymer of ethylene and vinyl acetate containing from about 10 to 70 weight percent vinyl acetate and exhibiting a melt index between about 1 and 600 grams per 10 minutes.
Claim 13
Dependent Claim
57 words
The method defined in claim 11 wherein the inhibitor is incorporated into said wax-containing soluble oil or micellar dispersion at a temperature sufficiently high to maintain the wax dissolved in the soluble oil or micellar dispersion, and wherein the soluble oil or micellar dispersion is thereafter cooled to a temperature below the solidification temperature of the wax.
Claim 14
Independent Claim
97 words
A method for inhibiting plugging of a porous media upon the passage of a wax-containing soluble oil or micellar dispersion through said media, which comprises incorporating into said soluble oil or micellar dispersion a wax deposition inhibitor comprising a copolymer of (1) ethylene and (2) a lower vinyl ester or a lower alkyl acrylate or methacrylate, said inhibitor being added to said soluble oil or micellar dispersion in an amount to provide therein a concentration of said copolymer between about 5 and 10,000 ppm effective to reduce plugging of the porous media by precipitated solid wax particles.
Claim 15
Dependent Claim
29 words
The method defined in claim 15 wherein said inhibitor is added to said soluble oil or micellar dispersion as a solution of the copolymer dissolved in an organic solvent.
Claim 16
Dependent Claim
41 words
The method defined in claim 15 wherein said inhibitor is a copolymer of ethylene and vinyl acetate containing from about 10 to 70 weight percent vinyl acetate and exhibiting a melt index between about 1 and 600 grams per 10 minutes.
Claim 17
Dependent Claim
57 words
The method defined in claim 15 wherein the inhibitor is incorporated into said wax-containing soluble oil or micellAr dispersion at a temperature sufficiently high to maintain the wax dissolved in the soluble oil or micellar dispersion, and wherein said soluble oil or micellar dispersion is thereafter cooled to a temperature below the solidification temperature of the wax.
Claim 18
Independent Claim
125 words
A method for reducing the minimum temperature at which wax-containing soluble oils or micellar dispersions can be passed through a porous media without excessive plugging of the media by precipitated wax particles, which comprises incorporating into said soluble oil or micellar dispersion a wax deposition inhibitor comprising a copolymer of (1) ethylene and (2) a lower vinyl ester or a lower alkyl acrylate or methacrylate, said inhibitor being added to said soluble oil or micellar dispersion in an amount to provide therein a concentration of said copolymer between about 5 and 10,000 ppm effective to reduce the minimum temperature at which the wax-containing soluble oil or micellar dispersion can be passed through a porous media without excessive plugging of the media by participated wax particles.
Claim 19
Dependent Claim
29 words
The method defined in claim 19 wherein said inhibitor is added to said soluble oil or micellar dispersion as a solution of the copolymer dissolved in an organic solvent.
Claim 20
Dependent Claim
41 words
The method defined in claim 19 wherein said inhibitor is a copolymer of ethylene and vinyl acetate containing from about 10 to 70 weight percent vinyl acetate and exhibiting a melt index between about 1 and 600 grams per 10 minutes.
Claim 21
Dependent Claim
57 words
The method defined in claim 19 wherein the inhibitor is incorporated into said wax-containing soluble oil or micellar dispersion at a temperature sufficiently high to maintain the wax dissolved in the soluble oil or micellar dispersion, and wherein the soluble oil or micellar dispersion is thereafter cooled to a temperature below the solidification temperature of the wax.
Claim 22
Dependent Claim
106 words
The composition comprising about 4 to 90 volume percent of a wax-containing liquid hydrocarbon, about 1 to 30 volume percent surface active agents, about 0.01 to 8 volume percent of a partially oxygenated organic stabilizing agent, and about 5 to 2, 000 ppm of a copolymer of ethylene and a monoethylenically unsaturated ester characterized by the formula: where (1) R is hydrogen or an alkyl group containing from about 1 to 25 carbon atoms and R1 is a vinyl or allyl group, or (2) R is an Alpha , Beta -unsaturated alkylene and R1 is an alkyl group containing from about 1 to 25 carbon atoms.
Claim 23
Dependent Claim
28 words
The composition defined in claim 23 wherein the composition is a micellar dispersion containing up to about 90 volume percent water present in the form of a microemulsion.
Claim 24
Dependent Claim
13 words
The composition defined in claim 24 wherein said microemulsion is a water-in-oil microemulsion.
Claim 25
Dependent Claim
24 words
The composition defined in claim 23 wherein said surface active agent is an admixture of preferentially oil-soluble organic sulfonate and preferentially water-soluble organic sulfonate.
Claim 26
Dependent Claim
39 words
The composition defined in claim 23 wherein said partially oxygenated organic stabilizing agent is selected from the group consisting of isopropyl and secondary butyl alcohol, methyl ethyl ketone, glycol monoethyl ether, glycol monobutyl ether, and diethylene glycol monobutyl ether.
Claim 27
Dependent Claim
14 words
The composition defined in claim 23 wherein said monoethylenically unsaturated ester is vinyl acetate.
Claim 28
Dependent Claim
17 words
The composition defined in claim 28 wherein said copolymer contains 10 to 70 weight percent vinyl acetate.
Claim 29
Dependent Claim
96 words
A composition comprising an admixture of about 4 to 90 volume percent of a wax- containing crude oil; about 1 to 30 weight percent of an admixture of preferentially oil-soluble organic sulfonate and preferentially water-soluble organic sulfonate; about 0.01 to 8 volume percent partially oxygenated organic stabilizing agent selected from The groups consisting of isopropyl and secondary butyl alcohol, methyl ethyl ketone, glycol monoethyl ether and diethylene glycol monobutyl ether; water; and about 5 to 10,000 ppm of a copolymer of (1) ethylene and (2) a lower vinyl ester or a lower alkyl acrylate or methacrylate.
Claim 30
Dependent Claim
25 words
The composition defined in claim 30 wherein said admixture contains less than about 10 volume percent water present in the form of a water-in-oil microemulsion.
Claim 31
Dependent Claim
27 words
The composition defined in claim 30 wherein said admixture is a micellar dispersion containing up to 90 volume percent water present in the form of a microemulsion.
Claim 32
Dependent Claim
42 words
The composition defined in claim 30 wherein said copolymer is a copolymer of (1) ethylene and (2) about 10 to 70 weight percent vinyl acetate and wherein said copolymer exhibits a melt index between about 1 and 600 grams per 10 minutes.
Claim 33
Dependent Claim
32 words
The composition defined in claim 33 wherein said copolymer contains about 39 to 42 weight percent vinyl acetate and exhibits a melt index between about 1 and 600 grams per 10 minutes.
Claim 34
Dependent Claim
22 words
The composition defined in claim 34 wherein said copolymer exhibits a melt index between about 45 to 70 grams per 10 minutes.
References Cited (Backward Citations)
US3126364A
Cited
US3051653A
Cited
US3244188A
Cited
US3250714A
Cited
US3395757A
Cited
US3481870A
Cited
US3324034A
Cited
US3567639A
Cited
US3531409A
Cited
US3500919A
Cited
US3512586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |