US4833224A
Expired / Lapsed
US
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Ethylene copolymers and process for production
Assignee: Idemitsu Kosan Co Ltd
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Filing: 1986-10-06
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Granted: 1989-05-23
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Expires: 2006-10-06
Abstract
Abstract A new ethylene copolymer comprising: a repeating unit (A) represented by the formula: --CH.sub.2 --CH.sub.2 --; a repeating unit (B) represented by the formula: ##STR1## (wherein R 1 is defined as hereinbefore), and a repeating unit (C) represented by the formula: ##STR2## (wherein R 2 and R 3 are defined as hereinbefore), said repeating units (A), (B) and (C) being orientated in a random and straight chain arrangement, said repeating unit (B) content being 0 to 45 mol %, said repeating unit (C) content being 0.001 to 45 mol %, and said copolymer having a weight average molecular weight of at least 5,000. A process for producing said ethylene copolymer by using a catalyst containing a specific chromium compound.
Inventors
- 👤 Masato Tanaka
- 👤 Syuji Machida
- 👤 Michitake Uoi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:06
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/06; C08F4/22; C08F210/00; C08F210/16
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
207 words
An ethylene copolymer consisting essentially of a repeating unit (A) represented by the formula: --CH.sub.2 --CH.sub.2 --; a repeating unit (B) represented by the formula: ##STR16## (wherein R 1 represents an alkyl group having 1 to 20 carbon atoms); and a repeating unit (C) represented by the formula: ##STR17## (wherein R 2 represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 3 to 20 carbon atoms, a cycloalky group having 3 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms or an aralkyl group having 7 to 20 carbon atoms, and R 3 represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 3 to 20 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms or an aralkyl group having 7 to 20 carbon atoms), said repeating units (A), (B) and (C) being orientated in a random and straight chain arrangement, said repeating unit (B) content being 0 to 45 mol%, said repeating unit (C) content being 0.001 to 45 mol%, and said copolymer having a weight average molecular weight of at least 5,000.
Claim 2
Dependent Claim
207 words
An ethylene copolymer consisting essentially of a repeating unit (A) represented by the formula: --CH.sub.2 --CH.sub.2 --; a repeating unit (B) represented by the formula: ##STR16## (wherein R 1 represents an alkyl group having 1 to 20 carbon atoms); and a repeating unit (C) represented by the formula: ##STR17## (wherein R 2 represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 3 to 20 carbon atoms, a cycloalky group having 3 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms or an aralkyl group having 7 to 20 carbon atoms, and R 3 represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 3 to 20 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms or an aralkyl group having 7 to 20 carbon atoms), said repeating units (A), (B) and (C) being orientated in a random and straight chain arrangement, said repeating unit (B) content being 0 to 45 mol%, said repeating unit (C) content being 0.001 to 45 mol%, and said copolymer having a weight average molecular weight of at least 5,000.
Claim 3
Dependent Claim
17 words
The ethylene copolymer as claimed in claim 1, consisting of the repeating units (A) and (C) only.
Claim 4
Dependent Claim
16 words
The ethylene copolymer of claim 1 wherein said repeating unit (C) content is at least 0.1%.
Claim 5
Dependent Claim
16 words
The ethylene copolymer of claim 1 wherein said repeating unit (C) content is at least 1%.
Claim 6
Dependent Claim
30 words
The ethylene copolymer of claim 1 wherein said repeating unit (B) content is 0 to 30 mole % and said repeating unit (C) content is 0.1 to 30 mole %.
Claim 7
Dependent Claim
18 words
The ethylene copolymer of claim 1 wherein said repeating unit (C) content is 0.1 to 30 mole %.
Claim 8
Dependent Claim
18 words
The ethylene copolymer of claim 1 wherein said repeating unit (C) content is 1 to 15 mole %.
Claim 9
Dependent Claim
18 words
The ethylene copolymer of claim 7 wherein said repeating unit (B) content is 0 to 15 mole %.
Claim 10
Dependent Claim
16 words
The ethylene copolymer of claim 8 wherein said weight average molecular weight is 10,000 to 3,000,000.
Claim 11
Dependent Claim
16 words
The ethylene copolymer of claim 1 wherein said weight average molecular weight is 10,000 to 3,000,000.
Claim 12
Dependent Claim
16 words
The ethylene copolymer of claim 2 wherein said repeating unit (C) content is at least 0.1%.
Claim 13
Dependent Claim
16 words
The ethylene copolymer of claim 2 wherein said repeating unit (C) content is at least 1%.
Claim 14
Dependent Claim
18 words
The ethylene copolymer of claim 2 wherein said repeating unit (C) content is 0.1 to 30 mole %.
Claim 15
Dependent Claim
19 words
The ethylene copolymer of claim 2 wherein said repeating unit (C) content is at 1 to 15 mole %.
Claim 16
Dependent Claim
16 words
The ethylene copolymer of claim 2 wherein said weight average molecular weight is 10,000 to 3,000,000.
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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) | 1992-05-22 | 1992-11-21 | 1993-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-22 | 1996-11-21 | 1997-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-22 | 2000-11-21 | 2001-05-23 | $7700.00 | Window Closed / Lapsed |