US3227698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cross-linking of polyethylene, polypropylene and copolymers thereof
Assignee: Hercules Powder Co
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Filing: 1961-06-30
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Granted: 1966-01-04
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Expires: 1981-06-30
Abstract
No abstract record available.
Inventors
- 👤 Anderson E Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:13
CPC Classifications
C; C08; C08F; C08F255/00; C08F255/02; C08K; C08K5/00; C08K5/16; C08K5/32; C08K5/33; Y; Y10; Y10S; Y10S8/00; Y10S8/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
THE PROCESS WHICH COMPRISES CONTACTING A SULFURFREE MIXTURE OF A POLYMERIC MATERIAL OF THE GROUP CONSISTING OF POLYETHYLENE, POLYPROPYLENE, AND ETHYLENEPROPYLENE COPOLYMERS AND A MODIFIER CONSISTING ESSENTIALLY OF A MEMBER OF THE GROUP CONSISITINGOF DINITROSOPIPERAZINE, M- AND P-DINITROSOBENZENE, N-NITROSO-N-METHYL AMINO-P-NITROSOBENZENE, DINITROSODIPHENYL GUANIDINE, AND DINITROSODIPHENYLUREA IN AN AMOUNT I THE THE RANGE OF 0.5 TO 20% WITH FREE RADICALS AT A TEMPERATURE IN THE RANGE OF -10*F. TO 400*F.
Claim 2
Dependent Claim
68 words
THE PROCESS WHICH COMPRISES CONTACTING A SULFURFREE MIXTURE OF A POLYMERIC MATERIAL OF THE GROUP CONSISTING OF POLYETHYLENE, POLYPROPYLENE, AND ETHYLENEPROPYLENE COPOLYMERS AND A MODIFIER CONSISTING ESSENTIALLY OF A MEMBER OF THE GROUP CONSISITINGOF DINITROSOPIPERAZINE, M- AND P-DINITROSOBENZENE, N-NITROSO-N-METHYL AMINO-P-NITROSOBENZENE, DINITROSODIPHENYL GUANIDINE, AND DINITROSODIPHENYLUREA IN AN AMOUNT I THE THE RANGE OF 0.5 TO 20% WITH FREE RADICALS AT A TEMPERATURE IN THE RANGE OF -10*F. TO 400*F.
References Cited (Backward Citations)
US2748104A
Cited
US2928801A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |