US3312736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making polymethylol-alkanoic acids
Assignee: Trojan Powder Co
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Filing: 1963-07-29
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Granted: 1967-04-04
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Expires: 1983-07-29
Abstract
No abstract record available.
Inventors
- 👤 Robert J Ruhf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:32
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/72; C07C45/75; C07C51/00; C07C51/16; C07C51/285
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
THE METHOD OF PRODUCING A POLYMETHYLOLALKANOIC ACID WHICH COMPRISES, MIXING AN AQUEOUS SOLUTION OF AT LEAST ONE POLYMETHYLOLALKANAL SELECTED FROM THE GROUP CONSISTING OF A,A-DIMETHYLOLAKANALS HAVING FROM FIVE TO SEVEN CARBON ATOMS AND TRIMETHYLOLETHANAL WITH AN AQUEOUS SOLUTION OF HYDROGEN PEROXIDE, THE MOL RATIO OF HYDROGEN PEROXIDE TO POLYMETHYLOLALKANAL BEING BETWEEN ABOUT 0.4 AND ABOUT 1 OF THE FORMER PER MOL OF THE LATTER, AND THE SOLVENT IN THE RESULTING REACTION MIXTURE FOR SAID POLYMETHYLOLALKANAL AND SAID HYDROGEN PEROXIDE CONSISTING ESSENTIALLY OF WATER; AND THEREAFTER MAINTAINING THE RESULTING MIXTURE AT A PH BETWEEN 3 AND ABOUT 9 AND AT A TEMPERATURE FROM ABOUT 40%C. TO THE BOILING POINT, UNTIL THE MIXTURE IS SUBSTANTIALLY FREE OF PEROXIDE.
Claim 2
Independent Claim
116 words
THE METHOD OF PRODUCING A POLYMETHYLOLALKANOIC ACID WHICH COMPRISES, MIXING AN AQUEOUS SOLUTION OF AT LEAST ONE POLYMETHYLOLALKANAL SELECTED FROM THE GROUP CONSISTING OF A,A-DIMETHYLOLAKANALS HAVING FROM FIVE TO SEVEN CARBON ATOMS AND TRIMETHYLOLETHANAL WITH AN AQUEOUS SOLUTION OF HYDROGEN PEROXIDE, THE MOL RATIO OF HYDROGEN PEROXIDE TO POLYMETHYLOLALKANAL BEING BETWEEN ABOUT 0.4 AND ABOUT 1 OF THE FORMER PER MOL OF THE LATTER, AND THE SOLVENT IN THE RESULTING REACTION MIXTURE FOR SAID POLYMETHYLOLALKANAL AND SAID HYDROGEN PEROXIDE CONSISTING ESSENTIALLY OF WATER; AND THEREAFTER MAINTAINING THE RESULTING MIXTURE AT A PH BETWEEN 3 AND ABOUT 9 AND AT A TEMPERATURE FROM ABOUT 40%C. TO THE BOILING POINT, UNTIL THE MIXTURE IS SUBSTANTIALLY FREE OF PEROXIDE.
References Cited (Backward Citations)
DE1035639B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-03 | 1970-10-03 | 1971-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-03 | 1974-10-03 | 1975-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-03 | 1978-10-03 | 1979-04-04 | $7700.00 | Window Closed / Lapsed |