US2878294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric acetals
Assignee: QUAKER CHEMICAL PRODUCTS Corp
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Filing: 1956-12-03
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Granted: 1959-03-17
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Expires: 1976-12-03
Abstract
No abstract record available.
Inventors
- 👤 Bernard H Kress
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:15
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/53; C; C07; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/04; C07C43/10; C07C43/11; C14; C14C; C14C11/00; C14C11/003; C14C9/00; D06; D06M; D06M11/00; D06M11/51; D06M11/55; D06M13/00; D06M13/10; D06M13/137; D06M15/00; D06M15/19; D06M15/37; D06M15/53; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S8/00; Y10S8/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A WATER-SOLUBLE POLYMERIC ACETAL CONDENSATION PRODUCT HAVING WETTING PROPERTIES COMPRISING THE REACTION PRODUCT OF A POLYALKYLENE GLYCOL IN WHICH THE ALKYLENE RADICAL HAS FROM 2 TO 4 CARBON ATOMS IN A STRAIGHT CHAIN, A MONOHYDRIC ALCOHOL HAVING A REACTIVE HYDROXYL RADICAL SELECTED FROM THE GROUP CONSISTING OF MONOHYDRIC ALCOHOLS AND GLYCOL MONETHERS CONTAINING FROM 10 TO 18 CARBON ATOMS, AND AN ALIPHATIC ALDEHYDE CONTAINING FROM 1 TO 8 CARBON ATOMS IN MONOMERIC FORM IN AMOUNT OF SAID ALCOHOLS, SAID REACTANTS BEING HEATED IN THE PRESENCE OF AN ACIDIC CATALYST UNDER REFLUX CONDITIONS TO REMOVE ABOUT 1 MOLE FOR EACH 2 MOLES OF HYDROXYL RADICAL OF WATER OF REACTION TO OBTAIN A WATER-SOLUBLE POLYMERIC ACETAL CONDENSATION PRODUCT, SAID CONDENSATION PRODUCT CONTAINING PER MOLECULE AT LEAST TWO POLYOXYALKYLENE RADICALS DERIVED FROM SAID GLYCOL AND AT LEAST TWO ALKYLIDENE RADICALS DERIVED FROM SAID ALDEHYDE.
Claim 2
Dependent Claim
141 words
A WATER-SOLUBLE POLYMERIC ACETAL CONDENSATION PRODUCT HAVING WETTING PROPERTIES COMPRISING THE REACTION PRODUCT OF A POLYALKYLENE GLYCOL IN WHICH THE ALKYLENE RADICAL HAS FROM 2 TO 4 CARBON ATOMS IN A STRAIGHT CHAIN, A MONOHYDRIC ALCOHOL HAVING A REACTIVE HYDROXYL RADICAL SELECTED FROM THE GROUP CONSISTING OF MONOHYDRIC ALCOHOLS AND GLYCOL MONETHERS CONTAINING FROM 10 TO 18 CARBON ATOMS, AND AN ALIPHATIC ALDEHYDE CONTAINING FROM 1 TO 8 CARBON ATOMS IN MONOMERIC FORM IN AMOUNT OF SAID ALCOHOLS, SAID REACTANTS BEING HEATED IN THE PRESENCE OF AN ACIDIC CATALYST UNDER REFLUX CONDITIONS TO REMOVE ABOUT 1 MOLE FOR EACH 2 MOLES OF HYDROXYL RADICAL OF WATER OF REACTION TO OBTAIN A WATER-SOLUBLE POLYMERIC ACETAL CONDENSATION PRODUCT, SAID CONDENSATION PRODUCT CONTAINING PER MOLECULE AT LEAST TWO POLYOXYALKYLENE RADICALS DERIVED FROM SAID GLYCOL AND AT LEAST TWO ALKYLIDENE RADICALS DERIVED FROM SAID ALDEHYDE.
References Cited (Backward Citations)
US2321542A
Cited
US2786081A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |