Patent US4831101A successfully refreshed from Google Patents.
US4831101A
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Polyglycidyl ethers from purified epihalohydrin
Assignee: Hexion Specialty Chemicals AG
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Filing: 1987-09-24
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Granted: 1989-05-16
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Expires: 2007-09-24
Abstract
Abstract A process for the preparation of at least one member of the group consisting of monoglycidyl and polyglycidyl compounds comprising reacting a member of the group consisting of mono- and polyvalent phenols, aromatic amines and aromatic carboxylic acids with an epihalohydrin substantially free of halogenated hydrocarbons.
Inventors
- 👤 Karl Jellinek
- 👤 Bert Meier
- 👤 Rolf Herzog
- 👤 Gunter Reinsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:51
CPC Classifications
C; C10; C10C; C10C1/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
56 words
A process for the preparation of at least one member of the group consisting of monoglycidyl and polyglycidyl compounds with less than 100 ppm of hydrolyzable chlorine comprising reacting a member of the group consisting of mono- and polyvalent phenols, aromatic amines and aromatic carboxylic acids with an epihalohydrin with a purity of 99.7 to 99.99%.
Claim 2
Dependent Claim
56 words
A process for the preparation of at least one member of the group consisting of monoglycidyl and polyglycidyl compounds with less than 100 ppm of hydrolyzable chlorine comprising reacting a member of the group consisting of mono- and polyvalent phenols, aromatic amines and aromatic carboxylic acids with an epihalohydrin with a purity of 99.7 to 99.99%.
Claim 3
Dependent Claim
10 words
The process of claim 1 wherein the epihalohydrin is epichlorohydrin.
Claim 4
Dependent Claim
14 words
The process of claim 2 wherein the purity of epichlorohydrin is 99.8 to 99.95%.
References Cited (Backward Citations)
US4447598A
Cited
US4485221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-15 | 1992-11-14 | 1993-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-15 | 1996-11-14 | 1997-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-15 | 2000-11-14 | 2001-05-16 | $7700.00 | Window Closed / Lapsed |