US2813841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkyd resin comprising tall oil and pentaerythritol
Assignee: Armstrong World Industries Inc
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Filing: 1955-01-31
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Granted: 1957-11-19
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Expires: 1975-01-31
Abstract
No abstract record available.
Inventors
- 👤 John A Parker
- 👤 Ernest J Pieper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:33
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/685; C08G63/6854
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
THE METHOD OF PREPARING A MODIFIED ALKYD RESIN WHICH COMPRISES REACTING A MIXTURE OF TALL OIL, DIMERIZED GLYCERIDE OIL FATTY ACIDS, AND A POLYHYDROXY ALCOHOL CONTAINING AT LEAST 1 ETHER LINKAGE TO PRODUCE A PRODUCT HAV-ING AN ACID NUMBER IN THE RANGE OF ABOUT 140-160; REACTING PENTAERYTHRITOL WITH SAID PRODUCT TO PRODUCE AN ALKYD HAVING AN ACID NUMBER IN THE RANGE OF ABOUT 1525; AND REACTING SAID ALKYD WITH AN ENEDIOIC DICARBOXYLICC ACID TO PRODUCE A PRODUCT HAVING AN ACID NUMBER IN THE RANGE OF ABOUT 20-30, SAID REACTANTS BEING PRESENT IN THE FOLLOWING PERCENTAGES BY WEIGHT:
Claim 2
Independent Claim
97 words
THE METHOD OF PREPARING A MODIFIED ALKYD RESIN WHICH COMPRISES REACTING A MIXTURE OF TALL OIL, DIMERIZED GLYCERIDE OIL FATTY ACIDS, AND A POLYHYDROXY ALCOHOL CONTAINING AT LEAST 1 ETHER LINKAGE TO PRODUCE A PRODUCT HAV-ING AN ACID NUMBER IN THE RANGE OF ABOUT 140-160; REACTING PENTAERYTHRITOL WITH SAID PRODUCT TO PRODUCE AN ALKYD HAVING AN ACID NUMBER IN THE RANGE OF ABOUT 1525; AND REACTING SAID ALKYD WITH AN ENEDIOIC DICARBOXYLICC ACID TO PRODUCE A PRODUCT HAVING AN ACID NUMBER IN THE RANGE OF ABOUT 20-30, SAID REACTANTS BEING PRESENT IN THE FOLLOWING PERCENTAGES BY WEIGHT:
References Cited (Backward Citations)
US1900638A
Cited
US2611756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |