US3029230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propane telomerized ethylene-vinyl acetate copolymer
Assignee: EIDP Inc
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Filing: 1959-06-17
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Granted: 1962-04-10
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Expires: 1979-06-17
Abstract
No abstract record available.
Inventors
- 👤 Strauss Howard William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:10
CPC Classifications
C; C08; C08F; C08F210/00; C08F210/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
58 words
A TELOMERIC COPOLYMER OF ETHYLENE AND VINYL ACETATE CONTAINING PROPANE INCORPORATED INTO THE POLYMER AS TELOGEN, THE CONCENTRATION OF PROPANE BEING 2.2 TO 8 MOL PERCENT OF ETHYLENE MONOMER AND FROM 0.5 TO 3 MOL PERCENT OF VINYL ACETATE IN THE COPOLYMER, HAVING A DENSITY OF 0.915 TO 0.940 G./CC. AND A MELT INDEX OF 0.1 TO 20
Claim 2
Dependent Claim
58 words
A TELOMERIC COPOLYMER OF ETHYLENE AND VINYL ACETATE CONTAINING PROPANE INCORPORATED INTO THE POLYMER AS TELOGEN, THE CONCENTRATION OF PROPANE BEING 2.2 TO 8 MOL PERCENT OF ETHYLENE MONOMER AND FROM 0.5 TO 3 MOL PERCENT OF VINYL ACETATE IN THE COPOLYMER, HAVING A DENSITY OF 0.915 TO 0.940 G./CC. AND A MELT INDEX OF 0.1 TO 20
Claim 3
Dependent Claim
129 words
PROCESS FOR PREPARING COPOLYMERS OF ETHYLENE WHICH COMPRISES PASSING ETHYLENE, 2.2 TO 8.0 MOL PERCENT OF PROPANE, BASED ON THE ETHYLENE CHARGED, AND 0.1 TO 2.0 MOL PERCENT OF VINYL ACETATE, BASED ON THE ETHYLENE CHARGED, INTO A REACTION ZONE MAINTAINED AT A TEMPERATURE OF 150* TO 250* C. AT A PRESSURE OF 15,000 TO 25,000 P.S.I. WITH CATALYTIC AMOUNTS OF A FREE RADICAL FORMING INITATOR, CONTINUING THE RESULTING POLYMERIZATION UNTIL A CONVERSION OF GREATER THAN 6 PERCENT OF THE ETHYLENE IS OBTAINED, AND RECOVERING A COPOLYMER OF ETHYLENE AND VINYL ACETATE FROM THE RESULTING MIXTURE, SAID COPOLYMER CONTAINING FROM 0.5 TO 3 MOL PERCENT OF VINYL ACETATE, BASED ON THE TOTAL COMPOSITION, AND HAVING A DENSITY OF 0.915 TO 0.940G./CC. AND A MELT INDEX OF 0.1 TO 20.
Claim 4
Dependent Claim
129 words
PROCESS FOR PREPARING COPOLYMERS OF ETHYLENE WHICH COMPRISES PASSING ETHYLENE, 2.2 TO 8.0 MOL PERCENT OF PROPANE, BASED ON THE ETHYLENE CHARGED, AND 0.1 TO 2.0 MOL PERCENT OF VINYL ACETATE, BASED ON THE ETHYLENE CHARGED, INTO A REACTION ZONE MAINTAINED AT A TEMPERATURE OF 150* TO 250* C. AT A PRESSURE OF 15,000 TO 25,000 P.S.I. WITH CATALYTIC AMOUNTS OF A FREE RADICAL FORMING INITATOR, CONTINUING THE RESULTING POLYMERIZATION UNTIL A CONVERSION OF GREATER THAN 6 PERCENT OF THE ETHYLENE IS OBTAINED, AND RECOVERING A COPOLYMER OF ETHYLENE AND VINYL ACETATE FROM THE RESULTING MIXTURE, SAID COPOLYMER CONTAINING FROM 0.5 TO 3 MOL PERCENT OF VINYL ACETATE, BASED ON THE TOTAL COMPOSITION, AND HAVING A DENSITY OF 0.915 TO 0.940G./CC. AND A MELT INDEX OF 0.1 TO 20.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-09 | 1965-10-09 | 1966-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-09 | 1969-10-09 | 1970-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-09 | 1973-10-09 | 1974-04-10 | $7700.00 | Window Closed / Lapsed |