Patent US3372201A successfully refreshed from Google Patents.
US3372201A
Expired / Lapsed
US
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Alkoxylation of secondary alcohols
Assignee: GAF Chemicals Corp
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Filing: 1966-06-17
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Granted: 1968-03-05
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Expires: 1986-06-17
Abstract
No abstract record available.
Inventors
- 👤 Robert E Leary
- 👤 Iii Louis J Nehmsmann
- 👤 Leslie M Schenck
- 👤 John M Walts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:49
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/0234; B01J31/0255; B01J31/0257; B01J31/0258; B01J27/00; B01J27/06; B01J31/26; B01J2231/00; B01J2231/40; B01J2231/42; B01J2231/4277; B01J2231/4288; B01J2231/48; B01J27/08; B01J27/12; B01J31/16; B01J31/18; B01J31/1845
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
IN A PROCESS FOR PRODUCING SECONDARY ALCOHOL JPOLYALKYLENE GLYCOL ETHERS, HAVING FROM 1 TO 5 ETHER LINKAGES, BY REACTING A SECONDARY ALKANOL HAVING FROM 6 TO 20 CARBON ATOMS, WITH AN ALKYLENE OXIDE AT A TEMPERATURE OF ABOUT 30* TO ABOUT 150*C. IN THE PRESENCE OF A CATALYTIC AMOUNT JOF BF3 CATALYST; THE ILMPROVEMENT COMPRISING EMPLOYING AS SAID CATALYST A BF3/TRIALKYLPHOSPHATE COMPLEX WHEREIN EACH ALKYL CONTAINS ABOUT 1 TO 12 CARBON ATOMS OR A BF3/TRIARYLPHOSPHATE COMPLEX WHEREIN THE ARYL GROUPS ARE MONOCYCLIC.
Claim 2
Dependent Claim
82 words
IN A PROCESS FOR PRODUCING SECONDARY ALCOHOL JPOLYALKYLENE GLYCOL ETHERS, HAVING FROM 1 TO 5 ETHER LINKAGES, BY REACTING A SECONDARY ALKANOL HAVING FROM 6 TO 20 CARBON ATOMS, WITH AN ALKYLENE OXIDE AT A TEMPERATURE OF ABOUT 30* TO ABOUT 150*C. IN THE PRESENCE OF A CATALYTIC AMOUNT JOF BF3 CATALYST; THE ILMPROVEMENT COMPRISING EMPLOYING AS SAID CATALYST A BF3/TRIALKYLPHOSPHATE COMPLEX WHEREIN EACH ALKYL CONTAINS ABOUT 1 TO 12 CARBON ATOMS OR A BF3/TRIARYLPHOSPHATE COMPLEX WHEREIN THE ARYL GROUPS ARE MONOCYCLIC.
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) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |