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US5028652A
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Stabilized polymer compositions of linear alternating polyketones and zinc aluminate
Assignee: Shell USA Inc
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Filing: 1990-02-05
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Granted: 1991-07-02
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Expires: 2010-02-05
Abstract
Abstract Stabilized polymer compositions comprise a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon incorporating a stabilizing quantity of a zinc aluminate and, optionally, an acidic polymer containing moieties of an α-olefin and an α,β-ethylenically unsaturated carboxylic acid. The compositions demonstrate improved melt stability.
Inventors
- 👤 Edgar J. Smutny
- 👤 Lynn H. Slaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:21
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/05; C08K5/057; C08K3/00; C08K3/18; C08K3/24; C08K5/09; C08K5/098; C08L; C08L73/00; C08L33/00; C08L33/02
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
45 words
A stabilized polymer composition comprising a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon having incorporated therein a stabilizing quantity of a zinc aluminate and, optionally, an acidic polymer containing moieties of an α-olefin and an α,β-ethylenically unsaturated carboxylic acid.
Claim 2
Dependent Claim
45 words
A stabilized polymer composition comprising a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon having incorporated therein a stabilizing quantity of a zinc aluminate and, optionally, an acidic polymer containing moieties of an α-olefin and an α,β-ethylenically unsaturated carboxylic acid.
Claim 3
Dependent Claim
52 words
The composition of claim 1 wherein the linear alternating polymer is represented by the repeating formula --CO--CH.sub.2 --CH.sub.2)].sub.x [CO--G)].sub.y wherein G is the moiety of an ethylenically unsaturated hydrocarbon of at least 3 carbon atoms polymerized through the ethylenic unsaturation thereof and the ratio of y:x is no more than about 0.5.
Claim 4
Dependent Claim
22 words
The composition of claim 2 wherein the atomic ratio of aluminum:zinc in the zinc aluminate is from about 0.5:1 to about 9:1.
Claim 5
Dependent Claim
20 words
The composition of claim 3 wherein the acidic polymer is a copolymer of ethylene and acrylic acid or methacrylic acid.
Claim 6
Dependent Claim
9 words
The composition of claim 4 wherein y is zero.
Claim 7
Dependent Claim
29 words
The composition of claim 5 wherein the zinc aluminate is present in a quantity of from about 0.01% by weight to about 5% by weight, based on total composition.
Claim 8
Dependent Claim
25 words
The composition of claim 6 wherein the acidic polymer is present in a quantity of up to about 5% by weight, based on total composition.
Claim 9
Dependent Claim
24 words
The composition of claim 4 wherein G is a moiety of propylene and the ratio of y:x is from about 0.01 to about 0.1.
Claim 10
Dependent Claim
29 words
The composition of claim 8 wherein the zinc aluminate is present in a quantity of from about 0.01% by weight to about 0.5% by weight based on total composition.
Claim 11
Dependent Claim
25 words
The composition of claim 9 wherein the acidic polymer is present in a quantity of up to about 5% by weight, based on total composition.
Claim 12
Dependent Claim
22 words
The composition of claim 10 wherein the atomic ratio of aluminum:zinc in the zinc aluminate is from about 2:1 to about 5:1.
Claim 13
Dependent Claim
17 words
The composition of claim 11 wherein the acidic polymer is a copolymer of ethylene and methacrylic acid.
Claim 14
Dependent Claim
17 words
The composition of claim 11 wherein the acidic polymer is a copolymer of ethylene and acrylic acid.
Claim 15
Dependent Claim
29 words
The composition of claim 13 wherein the acidic polymer is present in a quantity of from about 0.05% by weight to about 3% by weight based on total polymer.
Claim 16
Dependent Claim
19 words
A composition as in claim 1 wherein said zinc aluminate is represented by the general formula ZnO.Al(OH) 3 .
Claim 17
Dependent Claim
21 words
A composition as in claim 1 wherein said zinc aluminate is represented by the general formula ZnO.Al 2 O 3 .
Claim 18
Dependent Claim
53 words
A stabilized polymer composition comprising a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon having incorporated therein a stabilizing quantity of zinc aluminate represented by the general formula ZnO.Al(OH) 3 , and optionally, an acidic polymer containing moieties of an α-olefin and an α, B-ethylenically unsaturated carboxylic acid.
Claim 19
Dependent Claim
53 words
A stabilized polymer composition comprising a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon having incorporated therein a stabilizing quantity of zinc aluminate represented by the general formula ZnO.Al(OH) 3 , and optionally, an acidic polymer containing moieties of an α-olefin and an α, B-ethylenically unsaturated carboxylic acid.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-07-01 | 1994-12-31 | 1995-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-01 | 1998-12-31 | 1999-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-01 | 2002-12-31 | 2003-07-02 | $7700.00 | Window Closed / Lapsed |