US3849518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing impact-resistant polymeric compositions containing graft copolymers
Assignee: Montedison SpA
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Filing: 1972-12-18
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Granted: 1974-11-19
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Expires: 1992-12-18
Abstract
Abstract 1. A PROCESS FOR PREPARING IMPACT-RESISTANT POLYMERIC COMPOSITIONS COMPRISING GRAFT POLYMERIZING AT LEAST ONE ETHYLENICALLY UNSATURATED MONOMER SELECTED FROM THE GOUP CONSISTING OF STYRENES, ACRYLONITRILE, METHACRYLONITRILE, STYRENE/ACRYLONITRILE MIXTURES, ALKYL ACRYLATES, ALKYL METHACRYALTES, VINYL CHLORIDE AND VINYL ACETATE ONTO AN ELASTOMER SELECTED FROM THE GROUP CONSISTING OF SATURATED COPOLYMERS OF ETHYLENE AND AN A-OLEFIN AND LOW UNSATURATION COPOLYMERS OF ETHYLENE, AND A-OLEFIN AND A DIENE OR POLYENE HYDROCARBON, WHEREIN SAID ELASTOMER IS DISSOLVED IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF N-BUTANE, PROPANE AND MIXTURES THEREOF.
Inventors
- 👤 Edison Spa Montecatini
- 👤 F Severini
- 👤 A Valvassori
- 👤 C Tavazzani
- 👤 A Pagliari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:07
CPC Classifications
C; C08; C08F; C08F255/00; C08F255/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A PROCESS FOR PREPARING IMPACT-RESISTANT POLYMERIC COMPOSITIONS COMPRISING GRAFT POLYMERIZING AT LEAST ONE ETHYLENICALLY UNSATURATED MONOMER SELECTED FROM THE GOUP CONSISTING OF STYRENES, ACRYLONITRILE, METHACRYLONITRILE, STYRENE/ACRYLONITRILE MIXTURES, ALKYL ACRYLATES, ALKYL METHACRYALTES, VINYL CHLORIDE AND VINYL ACETATE ONTO AN ELASTOMER SELECTED FROM THE GROUP CONSISTING OF SATURATED COPOLYMERS OF ETHYLENE AND AN A-OLEFIN AND LOW UNSATURATION COPOLYMERS OF ETHYLENE, AND A-OLEFIN AND A DIENE OR POLYENE HYDROCARBON, WHEREIN SAID ELASTOMER IS DISSOLVED IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF N-BUTANE, PROPANE AND MIXTURES THEREOF.
Claim 2
Dependent Claim
85 words
A PROCESS FOR PREPARING IMPACT-RESISTANT POLYMERIC COMPOSITIONS COMPRISING GRAFT POLYMERIZING AT LEAST ONE ETHYLENICALLY UNSATURATED MONOMER SELECTED FROM THE GOUP CONSISTING OF STYRENES, ACRYLONITRILE, METHACRYLONITRILE, STYRENE/ACRYLONITRILE MIXTURES, ALKYL ACRYLATES, ALKYL METHACRYALTES, VINYL CHLORIDE AND VINYL ACETATE ONTO AN ELASTOMER SELECTED FROM THE GROUP CONSISTING OF SATURATED COPOLYMERS OF ETHYLENE AND AN A-OLEFIN AND LOW UNSATURATION COPOLYMERS OF ETHYLENE, AND A-OLEFIN AND A DIENE OR POLYENE HYDROCARBON, WHEREIN SAID ELASTOMER IS DISSOLVED IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF N-BUTANE, PROPANE AND MIXTURES THEREOF.
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) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |