US4772663A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of vinyl alcohol and acrylates
Assignee: Celanese Ltd
•
Filing: 1987-01-16
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Granted: 1988-09-20
•
Expires: 2007-01-16
Abstract
Abstract A vinyl alcohol copolymer comprising the following general structure ##STR1## where R is hydrogen or methyl; R 1 is a C 6 -C 18 hydrocarbyl group not containing an olefinic functionality; x is 70 to 99.5% mole %; y is 0 to 29.5 mole %; and z is 0.5 to 8 mole %.
Inventors
- 👤 Finn L. Marten
- 👤 Amir Famili
- 👤 Dillip K. Mohanty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:09
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/12
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
56 words
A substantially homogeneous random vinyl alcohol copolymer comprising the following general structure: ##STR6## wherein R is hydrogen or methyl; R 1 is a C 8 -C 16 hydrocarbyl group not containing an olefinic functionality; x is 70 to 99.5 mole %; y is 0 to 29.5 mole %; and z is 0.5 to 8 mole %.
Claim 2
Dependent Claim
56 words
A substantially homogeneous random vinyl alcohol copolymer comprising the following general structure: ##STR6## wherein R is hydrogen or methyl; R 1 is a C 8 -C 16 hydrocarbyl group not containing an olefinic functionality; x is 70 to 99.5 mole %; y is 0 to 29.5 mole %; and z is 0.5 to 8 mole %.
Claim 3
Dependent Claim
10 words
The copolymer of claim 1 in which R is methyl.
Claim 4
Dependent Claim
13 words
The copolymer of claim 1 in which R 1 contains 10-14 carbon atoms.
Claim 5
Dependent Claim
23 words
The copolymer of claim 1 in which x is 80-99 mole %, y is 0-19 mole % and z is 1-6 mole %.
Claim 6
Dependent Claim
23 words
The copolymer of claim 1 in which x is 85-98 mole %, y is 0-13 mole % and z is 2-4 mole %.
Claim 7
Dependent Claim
23 words
The copolymer of claim 2 in which x is 80-99 mole %, y is 0-19 mole % and z is 1-6 mole %.
Claim 8
Dependent Claim
23 words
The copolymer of claim 2 in which x is 85-98 mole %, y is 0-13 mole % and z is 2-4 mole %.
Claim 9
Dependent Claim
13 words
The copolymer of claim 1 in which R 1 is an alkyl group.
Claim 10
Dependent Claim
43 words
The substantially homogeneous random vinyl alcohol copolymer consisting essentially of the following general formula ##STR7## wherein R is hydrogen or methyl; n is a number from 8-16; x is 70-99.5 mole %; y is 0-29.5 mole %; and z is 0.5-8 mole %.
Claim 11
Dependent Claim
43 words
The substantially homogeneous random vinyl alcohol copolymer consisting essentially of the following general formula ##STR7## wherein R is hydrogen or methyl; n is a number from 8-16; x is 70-99.5 mole %; y is 0-29.5 mole %; and z is 0.5-8 mole %.
Claim 12
Dependent Claim
10 words
The copolymer of claim 9 in which n is 10-14.
Claim 13
Dependent Claim
22 words
The copolymer of claim 9 which x is 80-99 mole %, y is 0-19 mole % and z is 1-6 mole %.
Claim 14
Dependent Claim
23 words
The copolymer of claim 9 in which x is 85-98 mole %, y is 0-13 mole, % and z is 2-4 mole %.
Claim 15
Dependent Claim
38 words
A substantially homogeneous random vinyl alcohol copolymer consisting essentially of the following general formula ##STR8## wherein n is a number from 8-16; x is 70-99.5 mole %; y is 0-29.5 mole %; and z is 0.5-8 mole %.
Claim 16
Dependent Claim
38 words
A substantially homogeneous random vinyl alcohol copolymer consisting essentially of the following general formula ##STR8## wherein n is a number from 8-16; x is 70-99.5 mole %; y is 0-29.5 mole %; and z is 0.5-8 mole %.
Claim 17
Dependent Claim
23 words
The copolymer of claim 13 in which x is 80-99 mole %, y is 0-19 mole % and z is 1-6 mole %.
Claim 18
Dependent Claim
23 words
The copolymer of claim 13 in which x is 85-98 mole %, y is 0-13 mole % and z is 2-4 mole %.
Claim 19
Dependent Claim
13 words
The copolymer of claim 13 in which n is a number from 10-14.
Claim 20
Dependent Claim
23 words
The copolymer of claim 16 in which x is 80-99 mole %, y is 0-19 mole % and z is 1-6 mole %.
Claim 21
Dependent Claim
23 words
The copolymer of claim 16 in which x is 85-98 mole %, y is 0-13 mole % and z is 2-4 mole %.
Claim 22
Dependent Claim
14 words
The copolymer of claim 16 in which x is at least 92 mole %.
Claim 23
Dependent Claim
10 words
The copolymer of claim 13 in which n is 12.
Claim 24
Dependent Claim
14 words
The copolymer of claim 20 in which x is at least 92 mole %.
Claim 25
Dependent Claim
12 words
The copolymer of claim 19 in which z is 2-4 mole %.
Claim 26
Dependent Claim
12 words
The copolymer of claim 21 in which z is 2-4 mole %.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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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) | 1991-09-20 | 1992-03-21 | 1992-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-20 | 1996-03-21 | 1996-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-20 | 2000-03-21 | 2000-09-20 | $7700.00 | Window Closed / Lapsed |