US2579219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinyl polymer compositions containing as a plasticizer an ester of a pentaerythritolhydroxyalkyl ether
Assignee: Heyden Chemical Corp
•
Filing: 1948-08-18
•
Granted: 1951-12-18
•
Expires: 1968-08-18
Abstract
No abstract record available.
Inventors
- 👤 Valk Christy J Vander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:32
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
91 words
A VINYL CHLORIDE VINYL ACETATE COPOLYMER RESIN CONTAINING A PLASTICIZER CONSISTING OF A SUBSTITUTED PENTAERYTHRITOL WHEREIN EACH OF THE ORIGINAL HYDROXYL GROUPS OF THE PENTAERYTHRITOL ARE REPLACED, AT LEAST THREE OF THE ORIGINAL HYDROXYL GROUPS OF EACH MONO-PENTAERYTHRITOL GROUP BEING REPLACED BY AN ACYLATED HYDROXYALKYL ETHER, AND THE REMAINING HYDROXYL GROUP BEING REPLACED BY A RADICAL SELECTED FROM THE GROUP CONSISTING OF ACYLATED HYDROXYALKYL ETHER AND ACYL, ALL OF THE ACYL GROUPS HEREOF BEING DERIVED FROM A FATTY ACID HAVING 2-4 CARBON ATOMS AND THE ALKYL GROUP CONTAINING 2-4 CARBON ATOMS.
References Cited (Backward Citations)
US1922459A
Cited
US2381247A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-17 | 1955-06-18 | 1955-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-17 | 1959-06-18 | 1959-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-17 | 1963-06-18 | 1963-12-18 | $7700.00 | Window Closed / Lapsed |