US3265722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing ammonium salts of alkyl phenol polyglycol ether sulfates
Assignee: Richardson Co
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Filing: 1963-07-05
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Granted: 1966-08-09
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Expires: 1983-07-05
Abstract
No abstract record available.
Inventors
- 👤 James R Dudley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:51
CPC Classifications
C; C07; C07C; C07C303/00; C07C303/24; C11; C11D; C11D1/00; C11D1/02; C11D1/12; C11D1/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A METHOD OF PRODUCING AN AMMONIUM SALT OF AN ALKYL PHENOL POLYGLYCOL ETHER SULFATE CHARACTERIZED BY A RELATIVELY LOW DEGREE OF BENZENE RING SULFONATION WHICH COMPRISES INITIALLY REACTING A MOLE OF THE ALKYL PHENOL POLYGLYCOL ETHER WITH BETWEEN ABOUT 0.4 TO 0.6 MOLE OF SULFUR TRIOXIDE, NEUTRALIZING THE REACTION PRODUCT WITH AMMONIA TO FORM THE AMMONIUM SALT OF THE HALF ESTER AND SUBSEQUENTLY COMPLETING THE FORMATION OF THE AMMONIUM SALT OF THE POLYGLYCOL ETHER SULFATE BY REACTING THE HALF ESTER SALT WITH SULFAMIC ACID.
Claim 2
Independent Claim
84 words
A METHOD OF PRODUCING AN AMMONIUM SALT OF AN ALKYL PHENOL POLYGLYCOL ETHER SULFATE CHARACTERIZED BY A RELATIVELY LOW DEGREE OF BENZENE RING SULFONATION WHICH COMPRISES INITIALLY REACTING A MOLE OF THE ALKYL PHENOL POLYGLYCOL ETHER WITH BETWEEN ABOUT 0.4 TO 0.6 MOLE OF SULFUR TRIOXIDE, NEUTRALIZING THE REACTION PRODUCT WITH AMMONIA TO FORM THE AMMONIUM SALT OF THE HALF ESTER AND SUBSEQUENTLY COMPLETING THE FORMATION OF THE AMMONIUM SALT OF THE POLYGLYCOL ETHER SULFATE BY REACTING THE HALF ESTER SALT WITH SULFAMIC ACID.
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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |