Composition comprising polypropylene and an organosilicon compound
Abstract
Abstract WHEREIN R'', R'''' and R'''''' are each a hydrogen atom, an alkyl radical of 1-18 carbon atoms, an aralkyl radical of less than 19 carbon atoms or O3SiCH2 - where Q is alkyl, alkenyl or aryl of less than 19 carbon atoms, at least one R'', R'''' or R'''''' being Q3SiCH2-, or (c) mixture of (a) and (b). The production of shaped polypropylene articles by melt extrusion of thermally degraded isotactic polypropylene can be carried forward at lower temperatures than were heretofore required by incorporating in the polypropylene prior to thermal degradation thereof, from 0.01 to 5 percent by weight, based on the weight of the polypropylene, or (a) a silane or siloxane having at least one *SiCH2NR2 group where R is hydrogen or a hydrocarbon radical, (b) an organosilicon compound of the general formula
Inventors
- 👤 W Owen
- 👤 B Cooper
Bibliographic Details
Claims Analysis
Total Claims: 2References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |