US2945830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst for the preparation of improved alkyd resins
Assignee: Heyden Newport Chemical Corp
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Filing: 1955-09-13
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Granted: 1960-07-19
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Expires: 1975-09-13
Abstract
No abstract record available.
Inventors
- 👤 William M Kraft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:24
CPC Classifications
C; C11; C11C; C11C3/00; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/46; C08G63/48; C11C3/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
THE PROCESS OF PRODUCING REACTION PRODUCTS OF PENTAEYRTHRITOL COMPRISING PARTIALLY ESTERIFYING PENTAERYTHRITOL WITH AT LEAST ONE MOLE OF A MONOCARBOXYLIC ACID CONTAINING 6 TO 18 CARBON ATOMS PER MOLE OF PENTAERYTHRITOL AND HEATING AND DEHYDRATING THE PENTAERYTHRITOL ESTER IN THE PRESENCE OF A CATALYTIC AMOUNT OF A NUCLEAR SULFONATED POLYSTYRENE CATIN EXCHANGE RESIN IN THE HYDROGEN CYCLE AND REMOVING FROM 0.4 TO 0.8 MOLE OF WATER OF ETHERIFICATION PER MOLE OF PENTAERYTHRITOL TO FORM AN ESTERIFIED DIPENTAERYTHRITOL-CONTAINING PENTAERYTHRITOL REACTION PRODUCT.
Claim 2
Dependent Claim
80 words
THE PROCESS OF PRODUCING REACTION PRODUCTS OF PENTAEYRTHRITOL COMPRISING PARTIALLY ESTERIFYING PENTAERYTHRITOL WITH AT LEAST ONE MOLE OF A MONOCARBOXYLIC ACID CONTAINING 6 TO 18 CARBON ATOMS PER MOLE OF PENTAERYTHRITOL AND HEATING AND DEHYDRATING THE PENTAERYTHRITOL ESTER IN THE PRESENCE OF A CATALYTIC AMOUNT OF A NUCLEAR SULFONATED POLYSTYRENE CATIN EXCHANGE RESIN IN THE HYDROGEN CYCLE AND REMOVING FROM 0.4 TO 0.8 MOLE OF WATER OF ETHERIFICATION PER MOLE OF PENTAERYTHRITOL TO FORM AN ESTERIFIED DIPENTAERYTHRITOL-CONTAINING PENTAERYTHRITOL REACTION PRODUCT.
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) | 1963-07-19 | 1964-01-18 | 1964-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-19 | 1968-01-18 | 1968-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-19 | 1972-01-18 | 1972-07-19 | $7700.00 | Window Closed / Lapsed |