Patent US4883853A successfully refreshed from Google Patents.
US4883853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of ethylene and 2,4,4-trimethylpentene-1
Assignee: Hoechst AG
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Filing: 1987-05-29
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Granted: 1989-11-28
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Expires: 2007-05-29
Abstract
Abstract Novel copolymers of ethylene containing per 100 parts by weight ethylene 0.2 to 5.0 parts by weight of 2,4,4-trimethylpentene-(1) and optionally 2.0 to 20 parts by weight of vinyl ester or vinyl ether or ester of acrylic acid or methacrylic acid with alcohols of 1 to 8 carbon atoms having a melt index MFI (190/2.16) of 0.4 to 20 g/10 min. a density of 0.915 to 0.960 g/ml and an impact tensile strength of 850 to 2,600 mJ/mm 2 and a process for their preparation useful for making transparent films.
Inventors
- 👤 John Hobes
- 👤 Wolfgang Payer
- 👤 Ludger Bexten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 05:44
CPC Classifications
C; C08; C08F; C08F210/00; C08F210/16; Y; Y10; Y10S; Y10S526/00; Y10S526/913
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
75 words
A copolymer of ethylene containing, per 100 parts by weight of ethylene, 0.2 to 5.0 parts by weight of 2,4,4-trimethylpentene-(1) and optionally 2.0 to 20.0 parts by weight of at least one third member taken from the class consisting of vinyl esters, vinyl ethers, and esters of acrylic acid or methacrylic acid with aliphatic alcohols of 1 to 8 carbon atoms, said copolymer having a melt index MFI (190/2.16) of 0.4 to 20 g/10 min.
Claim 2
Dependent Claim
75 words
A copolymer of ethylene containing, per 100 parts by weight of ethylene, 0.2 to 5.0 parts by weight of 2,4,4-trimethylpentene-(1) and optionally 2.0 to 20.0 parts by weight of at least one third member taken from the class consisting of vinyl esters, vinyl ethers, and esters of acrylic acid or methacrylic acid with aliphatic alcohols of 1 to 8 carbon atoms, said copolymer having a melt index MFI (190/2.16) of 0.4 to 20 g/10 min.
Claim 3
Dependent Claim
23 words
A binary copolymer of ethylene according to claim 1 containing 0.2 to 5.0 parts by weight of 2,4,4-trimethylpentene-(1) per 100 parts of ethylene.
Claim 4
Dependent Claim
22 words
A binary copolymer of ethylene of claim 2 containing 0.3 to 4.0 parts by weight of 2,4,4-trimethylpentene-(1) per 100 parts of ethylene.
Claim 5
Dependent Claim
22 words
A binary copolymer of ethylene of claim 2 containing 0.35 to 3.5 parts by weight of 2,4,4-trimethylpentene-(1) per 100 parts of ethylene.
Claim 6
Dependent Claim
14 words
A copolymer of claim 1 having a melt index of 0.5 to 10.0 g/min.
Claim 7
Dependent Claim
14 words
A copolymer of claim 1 having a melt index of 0.6 to 4.0 g/min.
Claim 8
Dependent Claim
13 words
A copolymer of claim 1 having a density of 0.920 to 0.945 g/ml.
Claim 9
Dependent Claim
13 words
A copolymer of claim 1 having a density of 0.925 to 0.940 g/ml.
Claim 10
Dependent Claim
9 words
A film made of a copolymer of claim 1.
Claim 11
Dependent Claim
9 words
A film made of a copolymer of claim 2.
Claim 12
Dependent Claim
74 words
A copolymer of ethylene containing, per 100 parts by weight of ethylene, 0.3 to 4.0 parts by weight of 2,4,4-trimethylpentene-(1) and 2.2 to 15.0 parts by weight of at least one third member taken from the class consisting of vinyl esters, vinyl ethers, and esters of acrylic acid or methacrylic acid with aliphatic alcohols of 1 to 8 carbon atoms, said copolymer having a melt index MFI (190/2.16) of 0.4 to 20 g/10 min.
Claim 13
Dependent Claim
74 words
A copolymer of ethylene containing, per 100 parts by weight of ethylene, 0.3 to 4.0 parts by weight of 2,4,4-trimethylpentene-(1) and 2.2 to 15.0 parts by weight of at least one third member taken from the class consisting of vinyl esters, vinyl ethers, and esters of acrylic acid or methacrylic acid with aliphatic alcohols of 1 to 8 carbon atoms, said copolymer having a melt index MFI (190/2.16) of 0.4 to 20 g/10 min.
Claim 14
Dependent Claim
27 words
A ternary copolymer of claim 11 containing 0.35 to 3.5 parts of 2,4,4-trimethylpentene-(1) and 2.2 to 15 parts of the third member per 100 parts of ethylene.
Claim 15
Dependent Claim
27 words
A ternary copolymer of claim 11 containing 0.35 to 3.5 parts of 2,4,4-trimethylpentene-(1) and 2.5 to 10 parts of the third member per 100 parts of ethylene.
Claim 16
Dependent Claim
9 words
A film made of a copolymer of claim 11.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-11-27 | 1993-05-29 | 1993-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-27 | 1997-05-29 | 1997-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-27 | 2001-05-29 | 2001-11-28 | $7700.00 | Window Closed / Lapsed |