US3211710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for improving the mechanical properties of polymers or copolymers
Assignee: Stamicarbon BV
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Filing: 1961-02-14
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Granted: 1965-10-12
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Expires: 1981-02-14
Abstract
No abstract record available.
Inventors
- 👤 Hendriks Hendrik
- 👤 Cornelis E P V Van Den Berg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:34
CPC Classifications
C; C08; C08F; C08F8/00; C08C; C08C19/00; C08F8/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
PROCESS FOR IMPROVING THE MECHANICAL PROPERTIES OF A COPOLYMER OF ETHYLENE AND AN ALKADIENE CONTAINING FROM 1 TO 10 MOL PERCENT OF SAID ALKADIENE COMPRISING THE STEP OF ACTING ON A SUSPENSION OF SAID COPOLYMER IN A LIQUID DISTRIBUTION AGENT WITH AN ACTIVE CATALYST CONTAINING AN ORGANO ALUMINUM COMPOUND AND TETRAVALENT TITANIUM FOR AT LEAST 2 MIUNTES AT A TEMPERATURE OF ABOVE 60*C. IN THE ABSENCE OF THE MONOMERS OF SAID COPOLYMER.
Claim 2
Dependent Claim
72 words
PROCESS FOR IMPROVING THE MECHANICAL PROPERTIES OF A COPOLYMER OF ETHYLENE AND AN ALKADIENE CONTAINING FROM 1 TO 10 MOL PERCENT OF SAID ALKADIENE COMPRISING THE STEP OF ACTING ON A SUSPENSION OF SAID COPOLYMER IN A LIQUID DISTRIBUTION AGENT WITH AN ACTIVE CATALYST CONTAINING AN ORGANO ALUMINUM COMPOUND AND TETRAVALENT TITANIUM FOR AT LEAST 2 MIUNTES AT A TEMPERATURE OF ABOVE 60*C. IN THE ABSENCE OF THE MONOMERS OF SAID COPOLYMER.
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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |