US3226348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel alkyd resins modified with tris-(hydroxymethyl)aminomethane
Assignee: Commercial Solvents Corp
•
Filing: 1961-01-25
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Granted: 1965-12-28
•
Expires: 1981-01-25
Abstract
No abstract record available.
Inventors
- 👤 Robert F Purcell
- 👤 Lowell D Pals
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:01
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/685; C08G63/6854
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A PROCESS FOR THE PREPARATION OF ALKYD RESINS WHICH COMPRISES FIRST REACTING PHTHALIC ANHYDRIDE WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF MONOGLYCERIDES OF HIGHER FATTY ACIDS, PENTAERYTHRITOL ESTERS OF HIGHER FATTY ACIDS AND THEIR MIXTURES; AND WHEN THE ACID NUMBER OF THE REACTION PRODUCT IS IN TH E RANGE OF ABOUT 20 TO ABOUT 60 REACTING TRIS(HYDROXYMETHYL) AMINOMETHANE WITH THE SAID FIRST REACTION PRODUCT.
Claim 2
Dependent Claim
66 words
A PROCESS FOR THE PREPARATION OF ALKYD RESINS WHICH COMPRISES FIRST REACTING PHTHALIC ANHYDRIDE WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF MONOGLYCERIDES OF HIGHER FATTY ACIDS, PENTAERYTHRITOL ESTERS OF HIGHER FATTY ACIDS AND THEIR MIXTURES; AND WHEN THE ACID NUMBER OF THE REACTION PRODUCT IS IN TH E RANGE OF ABOUT 20 TO ABOUT 60 REACTING TRIS(HYDROXYMETHYL) AMINOMETHANE WITH THE SAID FIRST REACTION PRODUCT.
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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) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |