US4692268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for controlling viscosity of organic liquids and compositions
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1985-12-30
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Granted: 1987-09-08
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Expires: 2005-12-30
Abstract
Abstract A method for controlling the viscosity of organic liquids, said organic liquid having a solubility parameter of from about 6 to about 10.5, which comprises incorporating in said organic liquid a minor amount of a polymer complex, said complex being formed from the interaction of polymer A, containing neutralized sulfonate groups and polymer B, containing basic nitrogen groups, both functional groups being presented at a level of from about 4 to 500 meq. per 100 g. of polymer, wherein the polymeric backbone of polymer A and polymer B are the same.
Inventors
- 👤 Robert D. Lundberg
- 👤 Robert R. Phillips
- 👤 L. Sherwood Minckler
- 👤 David Y. Chung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:27
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/18; C08; C08F; C08F8/00; C08F8/30; C08F8/44; C10M157/00; C10M157/06; C10M2205/00; C10M2205/02; C10M2217/00; C10M2217/02; C10M2217/024; C10M2217/028; C10M2217/06; C10M2221/00; C10M2221/04; C10M2221/041
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
131 words
A hydrocarbon solution containing a polymer complex, said complex being present at a level of 0.05 to 20 weight percent of said solution, said polymer complex being a complex of: a metal sulfonated ethylene propylene terpolymer having a sulfonate content of 4 to 100 milliequivalents per 100 grams and a metal cation selected from the group consisting of zinc and transition elements, and an ethylene propylene copolymer or terpolymer having pendant basic amine groups, said pendant basic groups ranging from about 4 meg. to about 100 meg. wherein the ratio of the polymer containing the metal cation to the polymer containing basic amine groups being about 10 to about 0.1, wherein said ethylene propylene copolymers are grafted with maleic anhydride and subsequently reacted with N-aminopropyl morpholine on ##STR3## thereby forming ##STR4##
Claim 2
Dependent Claim
131 words
A hydrocarbon solution containing a polymer complex, said complex being present at a level of 0.05 to 20 weight percent of said solution, said polymer complex being a complex of: a metal sulfonated ethylene propylene terpolymer having a sulfonate content of 4 to 100 milliequivalents per 100 grams and a metal cation selected from the group consisting of zinc and transition elements, and an ethylene propylene copolymer or terpolymer having pendant basic amine groups, said pendant basic groups ranging from about 4 meg. to about 100 meg. wherein the ratio of the polymer containing the metal cation to the polymer containing basic amine groups being about 10 to about 0.1, wherein said ethylene propylene copolymers are grafted with maleic anhydride and subsequently reacted with N-aminopropyl morpholine on ##STR3## thereby forming ##STR4##
Claim 3
Dependent Claim
16 words
A solution according to claim 1, wherein said metal sulfonated terpolymer is a zinc sulfo-EPDM terpolymer.
Claim 4
Independent Claim
91 words
A method for controlling the viscosity of organic liquids, said organic liquid having a solubility parameter of from about 6 to about 10.5, which comprises incorporating in said organic liquid a minor amount of a polymer complex, said complex being formed from the interaction of polymer A, containing neutralized sulfonate groups and polymer B, containing basic nitrogen groups, both functional groups being presented at a level of from about 4 to 500 meq. per 100 g. of polymer, wherein the polymeric backbone of polymer A and polymer B are the same.
Claim 5
Independent Claim
91 words
A method for controlling the viscosity of organic liquids, said organic liquid having a solubility parameter of from about 6 to about 10.5, which comprises incorporating in said organic liquid a minor amount of a polymer complex, said complex being formed from the interaction of polymer A, containing neutralized sulfonate groups and polymer B, containing basic nitrogen groups, both functional groups being presented at a level of from about 4 to 500 meq. per 100 g. of polymer, wherein the polymeric backbone of polymer A and polymer B are the same.
Claim 6
Dependent Claim
34 words
The method of claim 3, further including a polar cosolvent, wherein said polar cosolvent comprises from about 0.1 to 40 weight percent of the total mixture of organic liquid, polymer complex and polar cosolvent.
Claim 7
Independent Claim
23 words
The method of claims 3 or 4, wherein said polymer complex has from about 0.1 to about 10 mole percent pendant sulfonate groups.
Claim 8
Independent Claim
34 words
The method of claims 3 or 4, wherein said polymer complex is a reaction product of a sulfonated EPDM terpolymer and a copolymer of vinyl pyridine with an EP copolymer or an EPDM terpolymer.
Claim 9
Dependent Claim
20 words
The method of claim 5, wherein said sulfonate groups are neutralized with basic compounds selected from groups of transition elements.
Claim 10
Independent Claim
27 words
The method of claims 3 or 4, wherein said polymer complex is incorporated into said organic liquid at a level of from 0.05 to 20 grams/100 ml.
Claim 11
Independent Claim
22 words
The method of claims 3 or 4, wherein said organic liquid has a viscosity at 100° F. of less than 35 centipoises.
Claim 12
Independent Claim
15 words
The method of claims 3 or 4, wherien said organic liquid is a lubricating oil.
Claim 13
Independent Claim
19 words
The method of claims 3 or 4, wherein said sulfonated polymer is in excess of said basic nitrogen-containing polymer.
Claim 14
Independent Claim
19 words
The method of claims 3 or 4, wherein said basic nitrogen-containing polymer is in excess of said sulfonated polymer.
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) | 1990-09-07 | 1991-03-09 | 1991-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-07 | 1995-03-09 | 1995-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-07 | 1999-03-09 | 1999-09-08 | $7700.00 | Window Closed / Lapsed |