Thermoplastic olefinic siloxane-ethylene polymer block copolymers
Abstract
Abstract THIS INVENTION RELATES TO THERMOPLASTIC SILOXAND-ETHYLENE POLYMER BLOCK COPOLYMERS CONSISTING ESSENTIALLY OF AT LEAST ONE SILOXANE BLOCK CONSISTING ESSENTIALLY OF HYDROCARBYLSILOXANE GROUPS AND AT LEAST ONE ETHYLENE POLYMER BLOCK CONSISTING ESSENTIALLY OF ETHYLENE GROUPS, SAID HYDROCARBYL GROUPS BEING MONOVALENT HYDROCARBON GROUPS FREE OF ALIPHATIC UNSATURATION, SAID ETHYLENE POLYMER BLOCK BEING DERIVED FROM A SOLID ETHYLENE POLYMER HAVING A MOLECULARWEIGHT OF AT LEAST 1800 AND SAID SILOXANE BLOCK BEING LINKED TO SAID ETHYLENE POLYMER BLOCK BY A SILICON TO CARBON BOND. THE BLOCK COPOLYMERS OF THIS INVENTION ARE USEFUL AS SURFACTANTS IN OLEFIN POLYMERS (E.G., AS ADDITIVES TO POLYETHYLENE TO IMPROVE THE ANTI-BLOCK AND ANTI-SLIP PROPERTIES THEREOF).
Inventors
- 👤 Marshall L Wheeler Jr
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |