US2902470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenol modified polyacetals
Assignee: QUAKER CHEMICAL PRODUCTS Corp
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Filing: 1956-11-30
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Granted: 1959-09-01
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Expires: 1976-11-30
Abstract
No abstract record available.
Inventors
- 👤 Bernard H Kress
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:13
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/28; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31942; Y10T428/31949; Y10T428/31953
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A PHENOL MODIFIED POLYACETAL CONDENSATION PRODUCT COMPRISING THE REACTION PRODUCT OF A PREVIOUSLY PREPARED ACETAL PREPARED BY REACTING AT ELEVATED TEMPERATURES IN THE PRESENCE OF AN ACIDIC CATALYST AT LEAST ONE ALKYLENE GLYCOL SELECTED FROM THE GROUPS CONSISTING OF MONOALKYLENE AND POLYALKYLENE GLYCOLS IN WHICH THE ALKYLENE RADICAL HAS 2 TO 10 CARBON ATOMS IN A STRAIGHT CHAIN AND AT LEAST ONE ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC, CARBOCYCLIC, AND HETEROCYCLIC REACTIVE ALDEHYDES CONTAINING FROM 1 TO 8 CARBON ATOMS IN MONOMERIC FORM, WITH AT LEAST ONE REACTIVE PHENOL SELECTED FROM THE GROUP CONSISTING OF PHENOLS HAVONG ONE TO THREE AROMATIC NUCLEI BEARING ONE TO THREE HYDROXYL GROUPS AND HYDROCARBON SUBSTITUTED PHENOLS IN WHICH THE HYDROCARBON RADICAL CONTAINS 1 TO 35 CARBON ATOMS, SAID SAID CONDENSATION PRODUCT CONTAINING PER MOLECULE AT LEAST TWO POLYOXYALKYLENE RADICALS DERIVED FROM SAID ALKYLENE GLYCOL AND AT LEAST TWO ALKYLIDINE RADICALS DERIVED FROM SAID ALDEHYDE.
Claim 2
Dependent Claim
152 words
A PHENOL MODIFIED POLYACETAL CONDENSATION PRODUCT COMPRISING THE REACTION PRODUCT OF A PREVIOUSLY PREPARED ACETAL PREPARED BY REACTING AT ELEVATED TEMPERATURES IN THE PRESENCE OF AN ACIDIC CATALYST AT LEAST ONE ALKYLENE GLYCOL SELECTED FROM THE GROUPS CONSISTING OF MONOALKYLENE AND POLYALKYLENE GLYCOLS IN WHICH THE ALKYLENE RADICAL HAS 2 TO 10 CARBON ATOMS IN A STRAIGHT CHAIN AND AT LEAST ONE ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC, CARBOCYCLIC, AND HETEROCYCLIC REACTIVE ALDEHYDES CONTAINING FROM 1 TO 8 CARBON ATOMS IN MONOMERIC FORM, WITH AT LEAST ONE REACTIVE PHENOL SELECTED FROM THE GROUP CONSISTING OF PHENOLS HAVONG ONE TO THREE AROMATIC NUCLEI BEARING ONE TO THREE HYDROXYL GROUPS AND HYDROCARBON SUBSTITUTED PHENOLS IN WHICH THE HYDROCARBON RADICAL CONTAINS 1 TO 35 CARBON ATOMS, SAID SAID CONDENSATION PRODUCT CONTAINING PER MOLECULE AT LEAST TWO POLYOXYALKYLENE RADICALS DERIVED FROM SAID ALKYLENE GLYCOL AND AT LEAST TWO ALKYLIDINE RADICALS DERIVED FROM SAID ALDEHYDE.
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) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |