US3244651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of acrolein homopolymers and derivatives thereof with epoxides
Assignee: Shell USA Inc
•
Filing: 1960-07-18
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Granted: 1966-04-05
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Expires: 1980-07-18
Abstract
No abstract record available.
Inventors
- 👤 Calvin E Pannell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:45
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/151; C08K5/1515; C08L; C08L63/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
67 words
A COMPOSITION COMPRISING (1) A MEMBER OF THE GROUP CONSISTING OF HOMOPOLYMERS OF ACROLEIN RESULTING FROM THE POLYMERIZATION THROUGH THE DOUBLE BOND OF THE ACROLEIN MOLECULE, AND POLYMERIC PRODUCTS OBTAINED BY REACTING THE AFOREDESCRIBED HOMOPOLYMERS OF ACROLEIN WITH A MEMBER OF THE GROUP CONSISTING OF SULFUR DIOXIDE, ALKALI METAL BISULFITES AND SODIUM SULFITE AND, (2) A STABILIZING AMOUNT OF A COMPOUND CONTAINING AT LEAST ONE VIC-EPOXY GROUP.
Claim 2
Dependent Claim
67 words
A COMPOSITION COMPRISING (1) A MEMBER OF THE GROUP CONSISTING OF HOMOPOLYMERS OF ACROLEIN RESULTING FROM THE POLYMERIZATION THROUGH THE DOUBLE BOND OF THE ACROLEIN MOLECULE, AND POLYMERIC PRODUCTS OBTAINED BY REACTING THE AFOREDESCRIBED HOMOPOLYMERS OF ACROLEIN WITH A MEMBER OF THE GROUP CONSISTING OF SULFUR DIOXIDE, ALKALI METAL BISULFITES AND SODIUM SULFITE AND, (2) A STABILIZING AMOUNT OF A COMPOUND CONTAINING AT LEAST ONE VIC-EPOXY GROUP.
Claim 3
Dependent Claim
43 words
A COMPOSITION COMPRISING A POLYACROLEIN-BISULFITE ADDUCT OBTAINED BY REACTING A HOMOPOLYMER OF ACROLEIN OBTAINED BY POLYMERIZATION AT THE DOUBLE BOND OF THE ACROLEIN MOLECULE WITH AN ALKALI METAL BISULFITE AND A STABILIZING AMOUNT OF AN ORGANIC COMPOUND CONTAINING AT LEAST ONE VIC-EPOXY GROUP.
Claim 4
Dependent Claim
43 words
A COMPOSITION COMPRISING A POLYACROLEIN-BISULFITE ADDUCT OBTAINED BY REACTING A HOMOPOLYMER OF ACROLEIN OBTAINED BY POLYMERIZATION AT THE DOUBLE BOND OF THE ACROLEIN MOLECULE WITH AN ALKALI METAL BISULFITE AND A STABILIZING AMOUNT OF AN ORGANIC COMPOUND CONTAINING AT LEAST ONE VIC-EPOXY GROUP.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |