US3850856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroxyl-ended epihalohydrin polymers by cationic polymerization
Assignee: Goodrich Corp
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Filing: 1973-08-20
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Granted: 1974-11-26
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Expires: 1993-08-20
Abstract
Abstract 1. A PROCESS FOR THE MANUFACTURE OF A HYDROXYL-ENDED POLYMER WHICH COMPRISES POLYMERIZING AN EPIHALOHYDRIN IN THE PRESENCE OF FROM ABOUT 0.03 PART TO 15.0 PARTS BY WEIGHT OF WATER OR ETHYLENE GLYCOL, BASED ON 100 PARTS BY WEIGHT OF THE EPIHALOHYDRIN AND WITH THE USE OF CATALYTIC AMOUNTS OF A TRIALKYL OXONIUM SALT OF AN HMF6 ACID WHEREIN M IS AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF PHOSPHORUS, ARSENIC AND ANTIMONY.
Inventors
- 👤 M Dreyfuss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:50
CPC Classifications
C; C07; C07C; C07C41/00; C07C41/01; C07C41/02; C07C41/03; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/4825; C08G18/50; C08G18/5003; C08G18/5006; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/08; C08G65/10; C08G65/105; C08G65/22; C08G65/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A PROCESS FOR THE MANUFACTURE OF A HYDROXYL-ENDED POLYMER WHICH COMPRISES POLYMERIZING AN EPIHALOHYDRIN IN THE PRESENCE OF FROM ABOUT 0.03 PART TO 15.0 PARTS BY WEIGHT OF WATER OR ETHYLENE GLYCOL, BASED ON 100 PARTS BY WEIGHT OF THE EPIHALOHYDRIN AND WITH THE USE OF CATALYTIC AMOUNTS OF A TRIALKYL OXONIUM SALT OF AN HMF6 ACID WHEREIN M IS AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF PHOSPHORUS, ARSENIC AND ANTIMONY.
Claim 2
Dependent Claim
72 words
A PROCESS FOR THE MANUFACTURE OF A HYDROXYL-ENDED POLYMER WHICH COMPRISES POLYMERIZING AN EPIHALOHYDRIN IN THE PRESENCE OF FROM ABOUT 0.03 PART TO 15.0 PARTS BY WEIGHT OF WATER OR ETHYLENE GLYCOL, BASED ON 100 PARTS BY WEIGHT OF THE EPIHALOHYDRIN AND WITH THE USE OF CATALYTIC AMOUNTS OF A TRIALKYL OXONIUM SALT OF AN HMF6 ACID WHEREIN M IS AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF PHOSPHORUS, ARSENIC AND ANTIMONY.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |