Patent US3929800A successfully refreshed from Google Patents.
US3929800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer grafting onto hydrocarbon liquids
Assignee: Polymer Res Corp of America
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Filing: 1972-07-27
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Granted: 1975-12-30
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Expires: 1992-07-27
Abstract
Abstract Monomers are polymerized and simultaneously grafted onto hydrocarbon liquids, so that the resulting hydrocarbon liquids with the polymerized monomers grafted thereto have improved properties as compared to the original hydrocarbon liquids. The grafting is accomplished by contacting the hydrocarbon liquid with a grafting liquid containing a silver salt, a polymerizable monomer and a catalyst which is adapted to activate the monomer to polymerization by itself being activated by metallic silver. The silver ion is reduced by the hydrocarbon liquid and the resulting metallic silver activates the catalyst which in turn activates the polymerization reaction so that the polymerization takes place and the formed polymer is grafted onto the hydrocarbon liquid.
Inventors
- 👤 Carl Horowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:38
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/44; C08F255/00; C08F289/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
225 words
METHOD OF GRAFTING A POLYMER ONTO A LIQUID HYDROCARBON MOLECULE SELECTED FROM THE GROUP CONSISTING OF POLYROPYLENES, POLYISOBUTYLENES, DIPENTENE AND POSTYPROLYTIC GASOLINE IN A LIQUID HYDROCARBON MEDIUM WHICH COMPRISES CONTACTING SAID LIQUID HYDROCARBON MOLECULE IN SAID LIQUID HYDROCARBON MEDIUM IWHT A SOLUTION OF SOLUBLE SILVER COMPRISES CONTACTING ABOUT 0.0001-0.01 PERCENT BY WEIGHT, SAID SOLUTION THUS CONTAINING SILVER IONS, AND ALSO CONTAINING A POLYMERIZABLE COMPOSITION CONSISTING ESSENTIALLY OF A SOLUTION IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OD DIMETHYLFORMAMIDE, TETRAHYDROFURANE, TETRAHYDROFUFURYL ALCOHOL, DIMETHYLSUFOXIDE, WATER, METHYL ALCOHOL, ETHYL ALCOHOL ISOPROPYL ALCOHOL, ACETONE, METHYL ETHYL KETONE, ETHYL ACETATE AND MIXTURES THEREOF OF A PER-CATALYST SELECTED FROM THE GROUP CONSISTING OF AMMONIUM PERSULFATE, HYDROGEN PEROXIDE, TERT-BUTYLHYDROPEROXIDE, DITERTUTYL PEROXIDE, BENZOYL PEROXIDE, DICUMYL PEROXIDE, LAUROYL PEROXIDE, TERT-BUTYLPERBENZOTE AND PERACETIC ACID AND A POLYMERIZABLE MONOMER IN AN AMOUNT OF 0.150 PERCENT BY WEIGHT WHICH IS ACTIVATED TO POLYMERIZATION BY ACTIVATION OF SAID PERCATALYST, SAID CATALYST BEING ACTIVATED BY METALLIC SILVER, WHEREBY THE SILVER IONS OF SAID SILVER SALT ARE REDUCED BY SAID LIQUID HYDROCARBON ,OLECULE TO METALLIC SILVER WHICH ACTIVATES AND CATALYST, WHEREBY POLYMERIAZTION OCCURS AND THE RESULTING POLYMER IS BOUND DIRECTLY TO SAID LIQUID HYDROCARBON MOLECULE, THEREBY FORMING AN INTIMATE BONDING OF THE POLYMER TO SAID LIQUID HYDROCARBON MOLECULE IN SAID LIQUID HYDROCARBON MEDIUM, THUS OBTAINING A LIQUID HYDROCARBON COMPOSITION WITH PROPERTIES DIFFERENT FROM THOSE OF THE ORIGINAL LIQUID HYDROCARBON.
Claim 2
Dependent Claim
225 words
METHOD OF GRAFTING A POLYMER ONTO A LIQUID HYDROCARBON MOLECULE SELECTED FROM THE GROUP CONSISTING OF POLYROPYLENES, POLYISOBUTYLENES, DIPENTENE AND POSTYPROLYTIC GASOLINE IN A LIQUID HYDROCARBON MEDIUM WHICH COMPRISES CONTACTING SAID LIQUID HYDROCARBON MOLECULE IN SAID LIQUID HYDROCARBON MEDIUM IWHT A SOLUTION OF SOLUBLE SILVER COMPRISES CONTACTING ABOUT 0.0001-0.01 PERCENT BY WEIGHT, SAID SOLUTION THUS CONTAINING SILVER IONS, AND ALSO CONTAINING A POLYMERIZABLE COMPOSITION CONSISTING ESSENTIALLY OF A SOLUTION IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OD DIMETHYLFORMAMIDE, TETRAHYDROFURANE, TETRAHYDROFUFURYL ALCOHOL, DIMETHYLSUFOXIDE, WATER, METHYL ALCOHOL, ETHYL ALCOHOL ISOPROPYL ALCOHOL, ACETONE, METHYL ETHYL KETONE, ETHYL ACETATE AND MIXTURES THEREOF OF A PER-CATALYST SELECTED FROM THE GROUP CONSISTING OF AMMONIUM PERSULFATE, HYDROGEN PEROXIDE, TERT-BUTYLHYDROPEROXIDE, DITERTUTYL PEROXIDE, BENZOYL PEROXIDE, DICUMYL PEROXIDE, LAUROYL PEROXIDE, TERT-BUTYLPERBENZOTE AND PERACETIC ACID AND A POLYMERIZABLE MONOMER IN AN AMOUNT OF 0.150 PERCENT BY WEIGHT WHICH IS ACTIVATED TO POLYMERIZATION BY ACTIVATION OF SAID PERCATALYST, SAID CATALYST BEING ACTIVATED BY METALLIC SILVER, WHEREBY THE SILVER IONS OF SAID SILVER SALT ARE REDUCED BY SAID LIQUID HYDROCARBON ,OLECULE TO METALLIC SILVER WHICH ACTIVATES AND CATALYST, WHEREBY POLYMERIAZTION OCCURS AND THE RESULTING POLYMER IS BOUND DIRECTLY TO SAID LIQUID HYDROCARBON MOLECULE, THEREBY FORMING AN INTIMATE BONDING OF THE POLYMER TO SAID LIQUID HYDROCARBON MOLECULE IN SAID LIQUID HYDROCARBON MEDIUM, THUS OBTAINING A LIQUID HYDROCARBON COMPOSITION WITH PROPERTIES DIFFERENT FROM THOSE OF THE ORIGINAL LIQUID HYDROCARBON.
Claim 3
Dependent Claim
25 words
Method according to claim 1 wherein said silver salt is dissolved in the same liquid hydrocarbon medium in which the polymer is to be bound.
Claim 4
Dependent Claim
29 words
Method according to claim 1 wherein said silver salt is silver perchlorate which is dissolved in the same liquid hydrocarbon medium in which the polymer is to be bound.
References Cited (Backward Citations)
US2419090A
Cited
US3232903A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |