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US3089859A
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Process for manufacturing dimethyloluron-alkyl-ethers and copolymers thereof with methylolmelamine alkyl ethers
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1960-02-23
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Granted: 1963-05-14
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Expires: 1980-02-23
Abstract
No abstract record available.
Inventors
- 👤 Oshima Teruo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:09
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/40; C08G12/42; C08G12/04; C08G12/10; C08G12/12; C08G12/26; C08G12/34; C08G12/36; C08G12/38; C08G12/421; C08G12/422; C08G12/424; C08G12/425
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
84 words
A PROCESS FOR MANUFACTURING CO-POLYMER OF DIMETHYLOLURON-DIALKYL-ETHER AND METHYLOMELAMINE ALKYL ETHER WHICH COMPRISES POLYMERIZING, AT A TEMPERATURE OF 40* TO 80*C., ONE MOL OF UREA, LESS THAN ONE-THIRD MOL OF MELAMINE AND MORE THAN 5 MOLS OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF FORMALDEHYDE AND COMPOUNDS WHICH RELEASE FORMALDEHYDE AT SAID TEMPERATURE WHILE MAINTAINING THE PH GREATER THAN 10, CONCENTRATING THE RESULTANT SOLUTION IN A NEUTRAL TO ACID PH RANGE, AND ADDING TO THE CONCENTRATE AN ALIPHATIC LOWER ALCOHOL AT ACIDIC PH.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |