US2851442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amino-aldehyde resins
Assignee: Celanese Corp
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Filing: 1955-06-06
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Granted: 1958-09-09
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Expires: 1975-06-06
Abstract
No abstract record available.
Inventors
- 👤 Clarence L Michaud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:37
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/40; C08G12/42; C08G12/421; C08G12/422
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
PROCESS FOR PREPARING A 3-METHOXY BUTANOL-MODIFIED AMINO-ALDEHYDE RESIN WHICH COMPRISES REACTING TOGETHER IN THE PRESENCE OF AN ALKALINE CATALYST FORMALDEHYDE AND UREA, AND REACTING THE PRODUCT SO FORMED IN THE PRESENCE OF AN ACID CATALYST WITH 3-METHOXY BUTANOL, THERE BEING EMPLOYED FROM ABOUT 2.1 TO 2.5 MOLS OF FORMALDEHYDE FOR EACH MOL OF UREA, AND FROM ABOUT 1.45 TO 1.95 MOLS OF 3-METHOXY BUTANOL FOR EACH MOL OF UREA.
Claim 2
Dependent Claim
69 words
PROCESS FOR PREPARING A 3-METHOXY BUTANOL-MODIFIED AMINO-ALDEHYDE RESIN WHICH COMPRISES REACTING TOGETHER IN THE PRESENCE OF AN ALKALINE CATALYST FORMALDEHYDE AND UREA, AND REACTING THE PRODUCT SO FORMED IN THE PRESENCE OF AN ACID CATALYST WITH 3-METHOXY BUTANOL, THERE BEING EMPLOYED FROM ABOUT 2.1 TO 2.5 MOLS OF FORMALDEHYDE FOR EACH MOL OF UREA, AND FROM ABOUT 1.45 TO 1.95 MOLS OF 3-METHOXY BUTANOL FOR EACH MOL OF UREA.
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) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |