Patent US2553996A successfully refreshed from Google Patents.
US2553996A
Expired / Lapsed
US
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Plasticization of vinyl chloride polymers
Assignee: Distillers Co Yeast Ltd
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Filing: 1950-04-18
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Granted: 1951-05-22
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Expires: 1970-04-18
Abstract
No abstract record available.
Inventors
- 👤 Abbott Leslie Stephen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:01
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101; C08K5/103
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A THERMOPLASTIC POLYMERIC MATERIAL HAVING A MAJOR PROPORTION OF VINYL CHLORIDE UNITS IN THE MOLECULE, PLASTICISED WITH AN ALIPHATIC DIESTER OF A DIOL SELECTED FROM THE GROUP CONSISTING OF VINYL CYCLOHEXAN-3:J-DIOL AND ETHYL CYCLOHEXAN-3:4DIOL, WHEREIN EACH FATTY ACID RESIDUE HAS 3-9 CARBON ATOMS, AND THE TOTAL NUMBER OF CARBON ATOMS IN THE TWO ACID RESIDUES IS 8-16.
Claim 2
Dependent Claim
57 words
A THERMOPLASTIC POLYMERIC MATERIAL HAVING A MAJOR PROPORTION OF VINYL CHLORIDE UNITS IN THE MOLECULE, PLASTICISED WITH AN ALIPHATIC DIESTER OF A DIOL SELECTED FROM THE GROUP CONSISTING OF VINYL CYCLOHEXAN-3:J-DIOL AND ETHYL CYCLOHEXAN-3:4DIOL, WHEREIN EACH FATTY ACID RESIDUE HAS 3-9 CARBON ATOMS, AND THE TOTAL NUMBER OF CARBON ATOMS IN THE TWO ACID RESIDUES IS 8-16.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |