Patent US3836607A successfully refreshed from Google Patents.
US3836607A
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US
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Thermoplastic molding composition comprising polybutene and polypropylene
Assignee: Huels AG
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Filing: 1972-07-28
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Granted: 1974-09-17
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Expires: 1992-07-28
Abstract
Abstract THERMOPLASTIC MOLDING COMPOSITIONS FOR PRODUCING DIMENSIONALLY STABLE AND IMPACT RESISTANT SHAPED ARTICLES FROM A MIXTURE OF POLY-1-BUTENE AND POLYPROPYLENE WHEREIN 60-85 PERCENT BY WEIGHT OF THE COMPOSITION IS 5PREDOMINANTLY ISOTACTIC LOW PRESSURE POLY-1-BUTENE HAVING UP TO 5 MOLE PERCENT OF ETHYLENE AS A COPOLYMER A MOLECULAR WEIGHT OF ABOUT 1,000,000 TO 2,400,000 AND A DENSITY OF ABOUT 0.910 TO 0.920 GRAMS PER CUBIC CENTIMETER, AND ABOUT 15-40 PERCENTBY WEIGHT OF THE COMPOSITION IS PREDOMINANTLY ISOTACTIC POLYPROPYLENE PRODUCED IN THE GASEOUS PHASE HAVING A MOLECULAR WEIGHT OF ABOUT 1,000,000 TO 1,600,000 AND A DENSITY OF ABOUT 0.890 TO 0.896 GRAMS PER CUBIC CENTIMETER.
Inventors
- 👤 H Finkmann
- 👤 B Engeln
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:46
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/18; C08L23/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |