US3134745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric polyols and method of making the same
Assignee: Dow Chemical Co
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Filing: 1961-04-26
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Granted: 1964-05-26
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Expires: 1981-04-26
Abstract
No abstract record available.
Inventors
- 👤 Kent S Dennis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:49
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/69; C08C; C08C19/00; C08C19/30; C08C19/42; C08C19/44; C08F; C08F36/00; C08F36/02; C08F36/04; C08F4/00; C08F4/06; C08F4/12; C08G18/40; C08G18/62; C08G18/6204
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A METHOD FOR MAKING A POLYMERIC POLYOL WHICH COMPRISES POLYMERIZING AN ETHYLENICALLY UNSATURATED HYDROCARBON MONOMER HAVING CONJUGATED UNSATURATION, AT LEAST ONE OF SAID DOUBLE BONDS BEING BETWEEN CARBON ATOMS IN AN ALIPHATIC PORTION OF SAID MONOMER, IN AN ETHER SOLVENT AND REACTION MEDIUM, IN ADMIXTURE WITH AN ALKALI METAL ADDITION COMPOUND OF ALPHA-METHYL STYRENE AS POLYMERIZATION CATALYST, AT TEMPERATURES BETWEEN ABOUT -80* AND +30*C., REACTING THE THUS-FORMED HYDROCABON POLYMER IN THE ETHER SOLVENT IN WHICH IT IS PREPARED WITH A POLYFUNCTIONAL EPOXY-CONTAINING COUPLING AGENT HAVING AT LEAST ONE EPOXY GROUP IN THE MOLECULE, IN AMOUNT CORRESPONDING TO FROM ABOUT 0.25 TO 0.75 CHEMICALLY EQUIVALENT PROPORTION OF THE POLYFUNCTIONAL COUPLING AGENT PER GRAM MOLECULAR PROPORTION OF THE HYDROCARBON POLYMER, WHEREBY AT LEAST A PORTION OF THE HYDROCARBON POLYMER MOLECULES ARE CHEMICALLY CONBINED INTO POLYMER MOLECULES OF LARGER SIZE, THEN REACTING THE THUS-FORMED POLYMERIC MATERIAL WITH A MONOFUNCTIONAL MONOEPOXIDE.
Claim 2
Independent Claim
147 words
A METHOD FOR MAKING A POLYMERIC POLYOL WHICH COMPRISES POLYMERIZING AN ETHYLENICALLY UNSATURATED HYDROCARBON MONOMER HAVING CONJUGATED UNSATURATION, AT LEAST ONE OF SAID DOUBLE BONDS BEING BETWEEN CARBON ATOMS IN AN ALIPHATIC PORTION OF SAID MONOMER, IN AN ETHER SOLVENT AND REACTION MEDIUM, IN ADMIXTURE WITH AN ALKALI METAL ADDITION COMPOUND OF ALPHA-METHYL STYRENE AS POLYMERIZATION CATALYST, AT TEMPERATURES BETWEEN ABOUT -80* AND +30*C., REACTING THE THUS-FORMED HYDROCABON POLYMER IN THE ETHER SOLVENT IN WHICH IT IS PREPARED WITH A POLYFUNCTIONAL EPOXY-CONTAINING COUPLING AGENT HAVING AT LEAST ONE EPOXY GROUP IN THE MOLECULE, IN AMOUNT CORRESPONDING TO FROM ABOUT 0.25 TO 0.75 CHEMICALLY EQUIVALENT PROPORTION OF THE POLYFUNCTIONAL COUPLING AGENT PER GRAM MOLECULAR PROPORTION OF THE HYDROCARBON POLYMER, WHEREBY AT LEAST A PORTION OF THE HYDROCARBON POLYMER MOLECULES ARE CHEMICALLY CONBINED INTO POLYMER MOLECULES OF LARGER SIZE, THEN REACTING THE THUS-FORMED POLYMERIC MATERIAL WITH A MONOFUNCTIONAL MONOEPOXIDE.
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) | 1967-05-26 | 1967-11-25 | 1968-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-26 | 1971-11-25 | 1972-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-26 | 1975-11-25 | 1976-05-26 | $7700.00 | Window Closed / Lapsed |