Patent US2878227A successfully refreshed from Google Patents.
US2878227A
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Acrylonitrile polymer compositions stabilized with paraformaldehyde and trialkyl subsituted phosphites, and method of making same
Assignee: Solutia Inc
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Filing: 1956-12-17
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Granted: 1959-03-17
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Expires: 1976-12-17
Abstract
No abstract record available.
Inventors
- 👤 Pompelio A Ucci
- 👤 William H Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:06
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/5398; C08K13/00; C08K13/02; C08K3/00; C08K3/18; C08K3/24; C08K3/30; C08K3/32; C08K5/0008; C08K5/01; C08K5/04; C08K5/07; C08K5/09; C08K5/10; C08K5/101; C08K5/13; C08K5/15; C08K5/151; C08K5/1535; C08K5/16; C08K5/17; C08K5/175; C08K5/34; C08K5/3412; C08K5/3415; C08K5/3432; C08K5/3435; C08K5/3442; C08K5/3462; C08K5/35; C08K5/36; C08K5/41; C08K5/42; C08K5/51; C08K5/52; C08K5/521; C08K5/523; C08K5/524; C08K5/53; C08K5/5317; C08K5/5393; C08K5/5397; C08L; C08L33/00; C08L33/18; C08L33/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A NEW COMPOSITION OF MATTER COMPRISING A POLYMER CONTAINING AT LEAST 80 PERCENT OF POLYMERIZED ACRYLONITRILE AND UP TO 20 PERCENT OF ANOTHER POLYMERIZABLE MONOOLEFINIC MONOMER COPOLYMERIZABLE THEREWITH, A SOLVENT THEREFOR, AND AN INHIBITING AGENT CONTAINING ABOUT 20 PERCENT OF PARAFORMALDEHYDE AND ABOUT 80 PERCENT, BASED ON THE TOTAL WEIGHT OF SAID INHIBITING AGENT, OF AN ORGANIC PHOSPHITE SELECTED FROM THE GROUP CONSISTING OF TRIETHYL PHOSPHITE, TRIBUTYL PHOSPHITE, TRIS (2-ETHYLHEXYL) PHOSPHITE, TRIHEXYL PHOSPHITE AND TRIISOCTYL PHOSPHITE.
Claim 2
Dependent Claim
76 words
A NEW COMPOSITION OF MATTER COMPRISING A POLYMER CONTAINING AT LEAST 80 PERCENT OF POLYMERIZED ACRYLONITRILE AND UP TO 20 PERCENT OF ANOTHER POLYMERIZABLE MONOOLEFINIC MONOMER COPOLYMERIZABLE THEREWITH, A SOLVENT THEREFOR, AND AN INHIBITING AGENT CONTAINING ABOUT 20 PERCENT OF PARAFORMALDEHYDE AND ABOUT 80 PERCENT, BASED ON THE TOTAL WEIGHT OF SAID INHIBITING AGENT, OF AN ORGANIC PHOSPHITE SELECTED FROM THE GROUP CONSISTING OF TRIETHYL PHOSPHITE, TRIBUTYL PHOSPHITE, TRIS (2-ETHYLHEXYL) PHOSPHITE, TRIHEXYL PHOSPHITE AND TRIISOCTYL PHOSPHITE.
References Cited (Backward Citations)
US2502030A
Cited
US2642408A
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 |