US3966844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric material having impact resistant properties and process for the preparation thereof
Assignee: SnamProgetti SpA
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Filing: 1974-10-31
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Granted: 1976-06-29
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Expires: 1994-10-31
Abstract
Abstract A polymeric material having high impact resistance and improved resistance to ageing is prepared by grafting monomers such as acrylonitrile and styrene upon a rubbery terpolymer of ethylene, an alpha-olefin such as propylene and a triene termonomer such as 2-(1' or 2' or 3' methyl-1' or 2' or 3' cyclopenta-2' or 4' dienyl) norborn-5-enyl-methane, containing from 0.1 to 20 pairs of conjugate double bonds per thousand carbon atoms in the polymer chain.
Inventors
- 👤 Sergio Arrighetti
- 👤 Aldo Brancaccio
- 👤 Sebastiano Cesca
- 👤 Gianpaolo Giuliani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:46
CPC Classifications
C; C08; C08F; C08F255/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
108 words
A polymeric material having high impact resistance and resistance to ageing consisting of a rubbery terpolymer of ethylene, an alpha-olefin and a triene termonomer containing at least one pair of conjugate double bonds in the polymer chain and having grafted thereon a member of the group consisting of alkenyl aromatic monomers, vinyl and vinylidene halides and acrylic monomers having the general formula ##EQU16## in which R is hydrogen or an alkyl group having from 1 to 5 carbon atoms, and X is a member of the group consisting of t,151 and ##EQU17## wherein R' is an alkyl group having from 1 to 9 carbon atoms, and mixtures thereof.
Claim 2
Dependent Claim
108 words
A polymeric material having high impact resistance and resistance to ageing consisting of a rubbery terpolymer of ethylene, an alpha-olefin and a triene termonomer containing at least one pair of conjugate double bonds in the polymer chain and having grafted thereon a member of the group consisting of alkenyl aromatic monomers, vinyl and vinylidene halides and acrylic monomers having the general formula ##EQU16## in which R is hydrogen or an alkyl group having from 1 to 5 carbon atoms, and X is a member of the group consisting of t,151 and ##EQU17## wherein R' is an alkyl group having from 1 to 9 carbon atoms, and mixtures thereof.
Claim 3
Dependent Claim
26 words
A polymeric material as claimed in claim 1, wherein said rubbery terpolymer contains from 0.1 to 20 pairs of conjugate double bonds in the polymer chain.
Claim 4
Dependent Claim
13 words
A polymeric material as claimed in claim 1, wherein said alpha-olefin is polypropylene.
Claim 5
Dependent Claim
18 words
A polymeric material as claimed in claim 1, wherein said rubbery terpolymer has acrylonitrile and styrene grafted thereon.
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) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |