Patent US3210441A successfully refreshed from Google Patents.
US3210441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-drying unsaturated polyester resins and coating compositions employing same
Assignee: Akzo Nobel Paints LLC
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Filing: 1961-09-11
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Granted: 1965-10-05
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Expires: 1981-09-11
Abstract
No abstract record available.
Inventors
- 👤 Arthur Paul Dowling
- 👤 Donald Francis Holicky
- 👤 Robert Warren Lottig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:10
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G63/668; C08G63/676; C08G63/02; C08G63/12; C08G63/52; C08G63/54; C08G63/553; C08G63/56; C08G63/58; C09; C09D; C09D167/00; C09D167/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
AN UNSATURATED RESINOUS POLYESTER WHICH CONSISTS ESSENTIALLY OF THE ESTERIFICATION PRODUCT OF SUBSTANTIALLY STOICHIOMETRIC ESTERIFYING PROPORTIONS OF A,B UNSATURATED POLYCARBOXYLIC ACID, WITH POLYHYDRIC ALCOHOL AND WITH MONOHYDRIC CYCLIC ACETAL, SUCH THAT ABOUT 0.95-1.05 EQUIVALENTS OF CARBOXYL GROUP ARE READCTED WITH ABOUT 1 EQUIVALENT OF HYDROXYL GROUPS AND SUCH THAT THERE IS AN AVERAGE OF AT LEAST ONE ESTERIFIED RESIDUE OF MONOHYDRIC ACETAL PER MOLECULE OF POLYESTER, SAID ACETAL HAVING 5 ATOMS IN ITS CYCLIC STRUCTURE AND BEIENG A CONDENSATION PRODUCT OF (A) AN ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF FORMALDEHYDE, SATURATED HYDROCARBYL ALDEHYDES AND SATURATED HALOHYDROCARBYL ALDEHYDES AND (B) A TRIHYDRIC, ALIPHATIC, STRAIGHT CHAIN ALCOHOL OF 3-6 CARBONS HAVING A PAIR OF VICINAL HYDROXYL GROUPS, ONE OF SAID PAIR BEING A PRIMARY HYDROXYL AND THE OTHER BEING A SECONDARY HYDROXYL, SAID UNSATURATED POLYESTER HAVING AN ACID NUMBER BELOW ABOUT 60.
Claim 2
Dependent Claim
141 words
AN UNSATURATED RESINOUS POLYESTER WHICH CONSISTS ESSENTIALLY OF THE ESTERIFICATION PRODUCT OF SUBSTANTIALLY STOICHIOMETRIC ESTERIFYING PROPORTIONS OF A,B UNSATURATED POLYCARBOXYLIC ACID, WITH POLYHYDRIC ALCOHOL AND WITH MONOHYDRIC CYCLIC ACETAL, SUCH THAT ABOUT 0.95-1.05 EQUIVALENTS OF CARBOXYL GROUP ARE READCTED WITH ABOUT 1 EQUIVALENT OF HYDROXYL GROUPS AND SUCH THAT THERE IS AN AVERAGE OF AT LEAST ONE ESTERIFIED RESIDUE OF MONOHYDRIC ACETAL PER MOLECULE OF POLYESTER, SAID ACETAL HAVING 5 ATOMS IN ITS CYCLIC STRUCTURE AND BEIENG A CONDENSATION PRODUCT OF (A) AN ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF FORMALDEHYDE, SATURATED HYDROCARBYL ALDEHYDES AND SATURATED HALOHYDROCARBYL ALDEHYDES AND (B) A TRIHYDRIC, ALIPHATIC, STRAIGHT CHAIN ALCOHOL OF 3-6 CARBONS HAVING A PAIR OF VICINAL HYDROXYL GROUPS, ONE OF SAID PAIR BEING A PRIMARY HYDROXYL AND THE OTHER BEING A SECONDARY HYDROXYL, SAID UNSATURATED POLYESTER HAVING AN ACID NUMBER BELOW ABOUT 60.
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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |