US3294869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cross-linking of atactic polypropylene and atactic copolymers of propylene
Assignee: Hercules LLC
•
Filing: 1957-12-26
•
Granted: 1966-12-27
•
Expires: 1977-12-26
Abstract
No abstract record available.
Inventors
- 👤 Anderson E Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:10
CPC Classifications
C; C08; C08F; C08F255/00; C08F255/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
THE PROCESS WHICH COMPRISES CONTACTING A MIXTURE OF A POLYMERIC MATERIAL OF THE GROUP CONSISTING OF ATACTIC POLYPROPYLENE AND ATACTIC ETHYLENE-PROPYLENE COPOLYMERS AND AS THE SOLE POLYMERIZABLE MONOMERIC MATERIAL A MODIFIER OF THE GROUP CONSISTING OF POLYALLY ESTERS OF CYANURIC ACIDS, DIALLYL ESTERS OF AROMATIC AND ALIPHATIC DIBASIC CARBOXYLIC ACIDS, POLYALLYL ETHERS OF POLYHYDRIC ALCOHOLS, SYMMETRICAL DIVINYL HYDROCARBONS IN WHICH THE VINYL GROUPS ARE SEPARATED FROM EACH OTHER BY AT LEAST 3 CARBON ATOMS, DIALLYL AND ALLYL METHACRYLATE IN AN AMOUNT IN THE RANGE OF 0.5 TO 20% UNDER FREE-RADICAL CATALYST AT A TEMPERATURE IN THE RANGE OF -10* TO 400*F.
Claim 2
Dependent Claim
101 words
THE PROCESS WHICH COMPRISES CONTACTING A MIXTURE OF A POLYMERIC MATERIAL OF THE GROUP CONSISTING OF ATACTIC POLYPROPYLENE AND ATACTIC ETHYLENE-PROPYLENE COPOLYMERS AND AS THE SOLE POLYMERIZABLE MONOMERIC MATERIAL A MODIFIER OF THE GROUP CONSISTING OF POLYALLY ESTERS OF CYANURIC ACIDS, DIALLYL ESTERS OF AROMATIC AND ALIPHATIC DIBASIC CARBOXYLIC ACIDS, POLYALLYL ETHERS OF POLYHYDRIC ALCOHOLS, SYMMETRICAL DIVINYL HYDROCARBONS IN WHICH THE VINYL GROUPS ARE SEPARATED FROM EACH OTHER BY AT LEAST 3 CARBON ATOMS, DIALLYL AND ALLYL METHACRYLATE IN AN AMOUNT IN THE RANGE OF 0.5 TO 20% UNDER FREE-RADICAL CATALYST AT A TEMPERATURE IN THE RANGE OF -10* TO 400*F.
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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) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |